QueryRequest (AWS SDK For Java for OSGi 1.10.4.1 API)

java.lang.Object
- com.amazonaws.AmazonWebServiceRequest
- - com.amazonaws.services.dynamodbv2.model.QueryRequest

All Implemented Interfaces:

ReadLimitInfo, Serializable, Cloneable
```
public class QueryRequest
extends AmazonWebServiceRequest
implements Serializable, Cloneable
```
Container for the parameters to the Query operation.
A Query operation uses the primary key of a table or a secondary index to directly access items from that table or index.

Use the KeyConditionExpression parameter to provide a specific hash key value. The Query operation will return all of the items from the table or index with that hash key value. You can optionally narrow the scope of the Query operation by specifying a range key value and a comparison operator in KeyConditionExpression . You can use the ScanIndexForward parameter to get results in forward or reverse order, by range key or by index key.

Queries that do not return results consume the minimum number of read capacity units for that type of read operation.

If the total number of items meeting the query criteria exceeds the result set size limit of 1 MB, the query stops and results are returned to the user with the LastEvaluatedKey element to continue the query in a subsequent operation. Unlike a Scan operation, a Query operation never returns both an empty result set and a LastEvaluatedKey value. LastEvaluatedKey is only provided if the results exceed 1 MB, or if you have used the Limit parameter.

You can query a table, a local secondary index, or a global secondary index. For a query on a table or on a local secondary index, you can set the ConsistentRead parameter to true and obtain a strongly consistent result. Global secondary indexes support eventually consistent reads only, so do not specify ConsistentRead when querying a global secondary index.

See Also:
AmazonDynamoDB.query(QueryRequest), Serialized Form

Field Summary
- Fields inherited from class com.amazonaws.AmazonWebServiceRequest
  NOOP

Constructor Summary

Constructors
Constructor and Description

QueryRequest()
Default constructor for a new QueryRequest object.

QueryRequest(String tableName)
Constructs a new QueryRequest object.

Constructors
Constructor and Description
`QueryRequest()` Default constructor for a new QueryRequest object.
`QueryRequest(String tableName)` Constructs a new QueryRequest object.

Method Summary

Methods
Modifier and Type	Method and Description
`QueryRequest`	`addExclusiveStartKeyEntry(String key, AttributeValue value)` The primary key of the first item that this operation will evaluate.
`QueryRequest`	`addExpressionAttributeNamesEntry(String key, String value)` One or more substitution tokens for attribute names in an expression.
`QueryRequest`	`addExpressionAttributeValuesEntry(String key, AttributeValue value)` One or more values that can be substituted in an expression.
`QueryRequest`	`addKeyConditionsEntry(String key, Condition value)`
`QueryRequest`	`addQueryFilterEntry(String key, Condition value)`
`QueryRequest`	`clearExclusiveStartKeyEntries()` Removes all the entries added into ExclusiveStartKey.
`QueryRequest`	`clearExpressionAttributeNamesEntries()` Removes all the entries added into ExpressionAttributeNames.
`QueryRequest`	`clearExpressionAttributeValuesEntries()` Removes all the entries added into ExpressionAttributeValues.
`QueryRequest`	`clearKeyConditionsEntries()` Removes all the entries added into KeyConditions.
`QueryRequest`	`clearQueryFilterEntries()` Removes all the entries added into QueryFilter.
`QueryRequest`	`clone()` Creates a shallow clone of this request.
`boolean`	`equals(Object obj)`
`List<String>`	`getAttributesToGet()`
`String`	`getConditionalOperator()`
`Boolean`	`getConsistentRead()` A value that if set to `true`, then the operation uses strongly consistent reads; otherwise, eventually consistent reads are used.
`Map<String,AttributeValue>`	`getExclusiveStartKey()` The primary key of the first item that this operation will evaluate.
`Map<String,String>`	`getExpressionAttributeNames()` One or more substitution tokens for attribute names in an expression.
`Map<String,AttributeValue>`	`getExpressionAttributeValues()` One or more values that can be substituted in an expression.
`String`	`getFilterExpression()` A string that contains conditions that DynamoDB applies after the Query operation, but before the data is returned to you.
`String`	`getIndexName()` The name of an index to query.
`String`	`getKeyConditionExpression()` The condition that specifies the key value(s) for items to be retrieved by the Query action.
`Map<String,Condition>`	`getKeyConditions()`
`Integer`	`getLimit()` The maximum number of items to evaluate (not necessarily the number of matching items).
`String`	`getProjectionExpression()` A string that identifies one or more attributes to retrieve from the table.
`Map<String,Condition>`	`getQueryFilter()`
`String`	`getReturnConsumedCapacity()` A value that if set to `TOTAL`, the response includes ConsumedCapacity data for tables and indexes.
`Boolean`	`getScanIndexForward()` A value that specifies ascending (true) or descending (false) traversal of the index.
`String`	`getSelect()` The attributes to be returned in the result.
`String`	`getTableName()` The name of the table containing the requested items.
`int`	`hashCode()`
`Boolean`	`isConsistentRead()` A value that if set to `true`, then the operation uses strongly consistent reads; otherwise, eventually consistent reads are used.
`Boolean`	`isScanIndexForward()` A value that specifies ascending (true) or descending (false) traversal of the index.
`void`	`setAttributesToGet(Collection<String> attributesToGet)`
`void`	`setConditionalOperator(ConditionalOperator conditionalOperator)`
`void`	`setConditionalOperator(String conditionalOperator)`
`void`	`setConsistentRead(Boolean consistentRead)` A value that if set to `true`, then the operation uses strongly consistent reads; otherwise, eventually consistent reads are used.
`void`	`setExclusiveStartKey(Map.Entry<String,AttributeValue> hashKey, Map.Entry<String,AttributeValue> rangeKey)` The primary key of the first item that this operation will evaluate.
`void`	`setExclusiveStartKey(Map<String,AttributeValue> exclusiveStartKey)` The primary key of the first item that this operation will evaluate.
`void`	`setExpressionAttributeNames(Map<String,String> expressionAttributeNames)` One or more substitution tokens for attribute names in an expression.
`void`	`setExpressionAttributeValues(Map<String,AttributeValue> expressionAttributeValues)` One or more values that can be substituted in an expression.
`void`	`setFilterExpression(String filterExpression)` A string that contains conditions that DynamoDB applies after the Query operation, but before the data is returned to you.
`void`	`setIndexName(String indexName)` The name of an index to query.
`void`	`setKeyConditionExpression(String keyConditionExpression)` The condition that specifies the key value(s) for items to be retrieved by the Query action.
`void`	`setKeyConditions(Map<String,Condition> keyConditions)`
`void`	`setLimit(Integer limit)` The maximum number of items to evaluate (not necessarily the number of matching items).
`void`	`setProjectionExpression(String projectionExpression)` A string that identifies one or more attributes to retrieve from the table.
`void`	`setQueryFilter(Map<String,Condition> queryFilter)`
`void`	`setReturnConsumedCapacity(ReturnConsumedCapacity returnConsumedCapacity)` A value that if set to `TOTAL`, the response includes ConsumedCapacity data for tables and indexes.
`void`	`setReturnConsumedCapacity(String returnConsumedCapacity)` A value that if set to `TOTAL`, the response includes ConsumedCapacity data for tables and indexes.
`void`	`setScanIndexForward(Boolean scanIndexForward)` A value that specifies ascending (true) or descending (false) traversal of the index.
`void`	`setSelect(Select select)` The attributes to be returned in the result.
`void`	`setSelect(String select)` The attributes to be returned in the result.
`void`	`setTableName(String tableName)` The name of the table containing the requested items.
`String`	`toString()` Returns a string representation of this object; useful for testing and debugging.
`QueryRequest`	`withAttributesToGet(Collection<String> attributesToGet)`
`QueryRequest`	`withAttributesToGet(String... attributesToGet)`
`QueryRequest`	`withConditionalOperator(ConditionalOperator conditionalOperator)`
`QueryRequest`	`withConditionalOperator(String conditionalOperator)`
`QueryRequest`	`withConsistentRead(Boolean consistentRead)` A value that if set to `true`, then the operation uses strongly consistent reads; otherwise, eventually consistent reads are used.
`QueryRequest`	`withExclusiveStartKey(Map.Entry<String,AttributeValue> hashKey, Map.Entry<String,AttributeValue> rangeKey)` The primary key of the first item that this operation will evaluate.
`QueryRequest`	`withExclusiveStartKey(Map<String,AttributeValue> exclusiveStartKey)` The primary key of the first item that this operation will evaluate.
`QueryRequest`	`withExpressionAttributeNames(Map<String,String> expressionAttributeNames)` One or more substitution tokens for attribute names in an expression.
`QueryRequest`	`withExpressionAttributeValues(Map<String,AttributeValue> expressionAttributeValues)` One or more values that can be substituted in an expression.
`QueryRequest`	`withFilterExpression(String filterExpression)` A string that contains conditions that DynamoDB applies after the Query operation, but before the data is returned to you.
`QueryRequest`	`withIndexName(String indexName)` The name of an index to query.
`QueryRequest`	`withKeyConditionExpression(String keyConditionExpression)` The condition that specifies the key value(s) for items to be retrieved by the Query action.
`QueryRequest`	`withKeyConditions(Map<String,Condition> keyConditions)`
`QueryRequest`	`withLimit(Integer limit)` The maximum number of items to evaluate (not necessarily the number of matching items).
`QueryRequest`	`withProjectionExpression(String projectionExpression)` A string that identifies one or more attributes to retrieve from the table.
`QueryRequest`	`withQueryFilter(Map<String,Condition> queryFilter)`
`QueryRequest`	`withReturnConsumedCapacity(ReturnConsumedCapacity returnConsumedCapacity)` A value that if set to `TOTAL`, the response includes ConsumedCapacity data for tables and indexes.
`QueryRequest`	`withReturnConsumedCapacity(String returnConsumedCapacity)` A value that if set to `TOTAL`, the response includes ConsumedCapacity data for tables and indexes.
`QueryRequest`	`withScanIndexForward(Boolean scanIndexForward)` A value that specifies ascending (true) or descending (false) traversal of the index.
`QueryRequest`	`withSelect(Select select)` The attributes to be returned in the result.
`QueryRequest`	`withSelect(String select)` The attributes to be returned in the result.
`QueryRequest`	`withTableName(String tableName)` The name of the table containing the requested items.

Methods inherited from class com.amazonaws.AmazonWebServiceRequest
copyBaseTo, getCustomRequestHeaders, getGeneralProgressListener, getReadLimit, getRequestClientOptions, getRequestCredentials, getRequestMetricCollector, putCustomRequestHeader, setGeneralProgressListener, setRequestCredentials, setRequestMetricCollector, withGeneralProgressListener, withRequestMetricCollector

Methods inherited from class java.lang.Object
finalize, getClass, notify, notifyAll, wait, wait, wait

- Constructor Detail
  - QueryRequest
```
public QueryRequest()
```
    Default constructor for a new QueryRequest object. Callers should use the setter or fluent setter (with...) methods to initialize this object after creating it.
  - QueryRequest
```
public QueryRequest(String tableName)
```
    Constructs a new QueryRequest object. Callers should use the setter or fluent setter (with...) methods to initialize any additional object members.
    
    Parameters:
    tableName - The name of the table containing the requested items.
- Method Detail
  - getTableName
```
public String getTableName()
```
    The name of the table containing the requested items.
    Constraints:
    Length: 3 - 255
    Pattern: [a-zA-Z0-9_.-]+
    
    Returns:
    The name of the table containing the requested items.
  - setTableName
```
public void setTableName(String tableName)
```
    The name of the table containing the requested items.
    Constraints:
    Length: 3 - 255
    Pattern: [a-zA-Z0-9_.-]+
    
    Parameters:
    tableName - The name of the table containing the requested items.
  - withTableName
```
public QueryRequest withTableName(String tableName)
```
    The name of the table containing the requested items.
    Returns a reference to this object so that method calls can be chained together.
    Constraints:
    Length: 3 - 255
    Pattern: [a-zA-Z0-9_.-]+
    
    Parameters:
    tableName - The name of the table containing the requested items.
    
    Returns:
    A reference to this updated object so that method calls can be chained together.
  - getIndexName
```
public String getIndexName()
```
    The name of an index to query. This index can be any local secondary index or global secondary index on the table. Note that if you use the IndexName parameter, you must also provide TableName.
    Constraints:
    Length: 3 - 255
    Pattern: [a-zA-Z0-9_.-]+
    
    Returns:
    The name of an index to query. This index can be any local secondary index or global secondary index on the table. Note that if you use the IndexName parameter, you must also provide TableName.
  - setIndexName
```
public void setIndexName(String indexName)
```
    The name of an index to query. This index can be any local secondary index or global secondary index on the table. Note that if you use the IndexName parameter, you must also provide TableName.
    Constraints:
    Length: 3 - 255
    Pattern: [a-zA-Z0-9_.-]+
    
    Parameters:
    indexName - The name of an index to query. This index can be any local secondary index or global secondary index on the table. Note that if you use the IndexName parameter, you must also provide TableName.
  - withIndexName
```
public QueryRequest withIndexName(String indexName)
```
    The name of an index to query. This index can be any local secondary index or global secondary index on the table. Note that if you use the IndexName parameter, you must also provide TableName.
    Returns a reference to this object so that method calls can be chained together.
    Constraints:
    Length: 3 - 255
    Pattern: [a-zA-Z0-9_.-]+
    
    Parameters:
    indexName - The name of an index to query. This index can be any local secondary index or global secondary index on the table. Note that if you use the IndexName parameter, you must also provide TableName.
    
    Returns:
    A reference to this updated object so that method calls can be chained together.
  - getSelect
```
public String getSelect()
```
    The attributes to be returned in the result. You can retrieve all item attributes, specific item attributes, the count of matching items, or in the case of an index, some or all of the attributes projected into the index.
    - ALL_ATTRIBUTES - Returns all of the item attributes from the specified table or index. If you query a local secondary index, then for each matching item in the index DynamoDB will fetch the entire item from the parent table. If the index is configured to project all item attributes, then all of the data can be obtained from the local secondary index, and no fetching is required.
    - ALL_PROJECTED_ATTRIBUTES - Allowed only when querying an index. Retrieves all attributes that have been projected into the index. If the index is configured to project all attributes, this return value is equivalent to specifying ALL_ATTRIBUTES.
    - COUNT - Returns the number of matching items, rather than the matching items themselves.
    - SPECIFIC_ATTRIBUTES - Returns only the attributes listed in AttributesToGet. This return value is equivalent to specifying AttributesToGet without specifying any value for Select.
      If you query a local secondary index and request only attributes that are projected into that index, the operation will read only the index and not the table. If any of the requested attributes are not projected into the local secondary index, DynamoDB will fetch each of these attributes from the parent table. This extra fetching incurs additional throughput cost and latency.
      If you query a global secondary index, you can only request attributes that are projected into the index. Global secondary index queries cannot fetch attributes from the parent table.
    If neither Select nor AttributesToGet are specified, DynamoDB defaults to ALL_ATTRIBUTES when accessing a table, and ALL_PROJECTED_ATTRIBUTES when accessing an index. You cannot use both Select and AttributesToGet together in a single request, unless the value for Select is SPECIFIC_ATTRIBUTES. (This usage is equivalent to specifying AttributesToGet without any value for Select.)
    If you use the ProjectionExpression parameter, then the value for Select can only be SPECIFIC_ATTRIBUTES. Any other value for Select will return an error.
    Constraints:
    Allowed Values: ALL_ATTRIBUTES, ALL_PROJECTED_ATTRIBUTES, SPECIFIC_ATTRIBUTES, COUNT
    Returns:
    The attributes to be returned in the result. You can retrieve all item attributes, specific item attributes, the count of matching items, or in the case of an index, some or all of the attributes projected into the index.
    
    ALL_ATTRIBUTES - Returns all of the item attributes from the specified table or index. If you query a local secondary index, then for each matching item in the index DynamoDB will fetch the entire item from the parent table. If the index is configured to project all item attributes, then all of the data can be obtained from the local secondary index, and no fetching is required.
    
    ALL_PROJECTED_ATTRIBUTES - Allowed only when querying an index. Retrieves all attributes that have been projected into the index. If the index is configured to project all attributes, this return value is equivalent to specifying ALL_ATTRIBUTES.
    
    COUNT - Returns the number of matching items, rather than the matching items themselves.
    
    SPECIFIC_ATTRIBUTES - Returns only the attributes listed in AttributesToGet. This return value is equivalent to specifying AttributesToGet without specifying any value for Select.
    If you query a local secondary index and request only attributes that are projected into that index, the operation will read only the index and not the table. If any of the requested attributes are not projected into the local secondary index, DynamoDB will fetch each of these attributes from the parent table. This extra fetching incurs additional throughput cost and latency.
    If you query a global secondary index, you can only request attributes that are projected into the index. Global secondary index queries cannot fetch attributes from the parent table.
    
    If neither Select nor AttributesToGet are specified, DynamoDB defaults to ALL_ATTRIBUTES when accessing a table, and ALL_PROJECTED_ATTRIBUTES when accessing an index. You cannot use both Select and AttributesToGet together in a single request, unless the value for Select is SPECIFIC_ATTRIBUTES. (This usage is equivalent to specifying AttributesToGet without any value for Select.)
    If you use the ProjectionExpression parameter, then the value for Select can only be SPECIFIC_ATTRIBUTES. Any other value for Select will return an error.
    See Also:
    Select
  - setSelect
```
public void setSelect(String select)
```
    The attributes to be returned in the result. You can retrieve all item attributes, specific item attributes, the count of matching items, or in the case of an index, some or all of the attributes projected into the index.
    - ALL_ATTRIBUTES - Returns all of the item attributes from the specified table or index. If you query a local secondary index, then for each matching item in the index DynamoDB will fetch the entire item from the parent table. If the index is configured to project all item attributes, then all of the data can be obtained from the local secondary index, and no fetching is required.
    - ALL_PROJECTED_ATTRIBUTES - Allowed only when querying an index. Retrieves all attributes that have been projected into the index. If the index is configured to project all attributes, this return value is equivalent to specifying ALL_ATTRIBUTES.
    - COUNT - Returns the number of matching items, rather than the matching items themselves.
    - SPECIFIC_ATTRIBUTES - Returns only the attributes listed in AttributesToGet. This return value is equivalent to specifying AttributesToGet without specifying any value for Select.
      If you query a local secondary index and request only attributes that are projected into that index, the operation will read only the index and not the table. If any of the requested attributes are not projected into the local secondary index, DynamoDB will fetch each of these attributes from the parent table. This extra fetching incurs additional throughput cost and latency.
      If you query a global secondary index, you can only request attributes that are projected into the index. Global secondary index queries cannot fetch attributes from the parent table.
    If neither Select nor AttributesToGet are specified, DynamoDB defaults to ALL_ATTRIBUTES when accessing a table, and ALL_PROJECTED_ATTRIBUTES when accessing an index. You cannot use both Select and AttributesToGet together in a single request, unless the value for Select is SPECIFIC_ATTRIBUTES. (This usage is equivalent to specifying AttributesToGet without any value for Select.)
    If you use the ProjectionExpression parameter, then the value for Select can only be SPECIFIC_ATTRIBUTES. Any other value for Select will return an error.
    Constraints:
    Allowed Values: ALL_ATTRIBUTES, ALL_PROJECTED_ATTRIBUTES, SPECIFIC_ATTRIBUTES, COUNT
    Parameters:
    select - The attributes to be returned in the result. You can retrieve all item attributes, specific item attributes, the count of matching items, or in the case of an index, some or all of the attributes projected into the index.
    
    ALL_ATTRIBUTES - Returns all of the item attributes from the specified table or index. If you query a local secondary index, then for each matching item in the index DynamoDB will fetch the entire item from the parent table. If the index is configured to project all item attributes, then all of the data can be obtained from the local secondary index, and no fetching is required.
    
    ALL_PROJECTED_ATTRIBUTES - Allowed only when querying an index. Retrieves all attributes that have been projected into the index. If the index is configured to project all attributes, this return value is equivalent to specifying ALL_ATTRIBUTES.
    
    COUNT - Returns the number of matching items, rather than the matching items themselves.
    
    SPECIFIC_ATTRIBUTES - Returns only the attributes listed in AttributesToGet. This return value is equivalent to specifying AttributesToGet without specifying any value for Select.
    If you query a local secondary index and request only attributes that are projected into that index, the operation will read only the index and not the table. If any of the requested attributes are not projected into the local secondary index, DynamoDB will fetch each of these attributes from the parent table. This extra fetching incurs additional throughput cost and latency.
    If you query a global secondary index, you can only request attributes that are projected into the index. Global secondary index queries cannot fetch attributes from the parent table.
    
    If neither Select nor AttributesToGet are specified, DynamoDB defaults to ALL_ATTRIBUTES when accessing a table, and ALL_PROJECTED_ATTRIBUTES when accessing an index. You cannot use both Select and AttributesToGet together in a single request, unless the value for Select is SPECIFIC_ATTRIBUTES. (This usage is equivalent to specifying AttributesToGet without any value for Select.)
    If you use the ProjectionExpression parameter, then the value for Select can only be SPECIFIC_ATTRIBUTES. Any other value for Select will return an error.
    See Also:
    Select
  - withSelect
```
public QueryRequest withSelect(String select)
```
    The attributes to be returned in the result. You can retrieve all item attributes, specific item attributes, the count of matching items, or in the case of an index, some or all of the attributes projected into the index.
    - ALL_ATTRIBUTES - Returns all of the item attributes from the specified table or index. If you query a local secondary index, then for each matching item in the index DynamoDB will fetch the entire item from the parent table. If the index is configured to project all item attributes, then all of the data can be obtained from the local secondary index, and no fetching is required.
    - ALL_PROJECTED_ATTRIBUTES - Allowed only when querying an index. Retrieves all attributes that have been projected into the index. If the index is configured to project all attributes, this return value is equivalent to specifying ALL_ATTRIBUTES.
    - COUNT - Returns the number of matching items, rather than the matching items themselves.
    - SPECIFIC_ATTRIBUTES - Returns only the attributes listed in AttributesToGet. This return value is equivalent to specifying AttributesToGet without specifying any value for Select.
      If you query a local secondary index and request only attributes that are projected into that index, the operation will read only the index and not the table. If any of the requested attributes are not projected into the local secondary index, DynamoDB will fetch each of these attributes from the parent table. This extra fetching incurs additional throughput cost and latency.
      If you query a global secondary index, you can only request attributes that are projected into the index. Global secondary index queries cannot fetch attributes from the parent table.
    If neither Select nor AttributesToGet are specified, DynamoDB defaults to ALL_ATTRIBUTES when accessing a table, and ALL_PROJECTED_ATTRIBUTES when accessing an index. You cannot use both Select and AttributesToGet together in a single request, unless the value for Select is SPECIFIC_ATTRIBUTES. (This usage is equivalent to specifying AttributesToGet without any value for Select.)
    If you use the ProjectionExpression parameter, then the value for Select can only be SPECIFIC_ATTRIBUTES. Any other value for Select will return an error.
    Returns a reference to this object so that method calls can be chained together.
    Constraints:
    Allowed Values: ALL_ATTRIBUTES, ALL_PROJECTED_ATTRIBUTES, SPECIFIC_ATTRIBUTES, COUNT
    Parameters:
    select - The attributes to be returned in the result. You can retrieve all item attributes, specific item attributes, the count of matching items, or in the case of an index, some or all of the attributes projected into the index.
    
    ALL_ATTRIBUTES - Returns all of the item attributes from the specified table or index. If you query a local secondary index, then for each matching item in the index DynamoDB will fetch the entire item from the parent table. If the index is configured to project all item attributes, then all of the data can be obtained from the local secondary index, and no fetching is required.
    
    ALL_PROJECTED_ATTRIBUTES - Allowed only when querying an index. Retrieves all attributes that have been projected into the index. If the index is configured to project all attributes, this return value is equivalent to specifying ALL_ATTRIBUTES.
    
    COUNT - Returns the number of matching items, rather than the matching items themselves.
    
    SPECIFIC_ATTRIBUTES - Returns only the attributes listed in AttributesToGet. This return value is equivalent to specifying AttributesToGet without specifying any value for Select.
    If you query a local secondary index and request only attributes that are projected into that index, the operation will read only the index and not the table. If any of the requested attributes are not projected into the local secondary index, DynamoDB will fetch each of these attributes from the parent table. This extra fetching incurs additional throughput cost and latency.
    If you query a global secondary index, you can only request attributes that are projected into the index. Global secondary index queries cannot fetch attributes from the parent table.
    
    If neither Select nor AttributesToGet are specified, DynamoDB defaults to ALL_ATTRIBUTES when accessing a table, and ALL_PROJECTED_ATTRIBUTES when accessing an index. You cannot use both Select and AttributesToGet together in a single request, unless the value for Select is SPECIFIC_ATTRIBUTES. (This usage is equivalent to specifying AttributesToGet without any value for Select.)
    If you use the ProjectionExpression parameter, then the value for Select can only be SPECIFIC_ATTRIBUTES. Any other value for Select will return an error.
    Returns:
    A reference to this updated object so that method calls can be chained together.
    See Also:
    Select
  - setSelect
```
public void setSelect(Select select)
```
    The attributes to be returned in the result. You can retrieve all item attributes, specific item attributes, the count of matching items, or in the case of an index, some or all of the attributes projected into the index.
    - ALL_ATTRIBUTES - Returns all of the item attributes from the specified table or index. If you query a local secondary index, then for each matching item in the index DynamoDB will fetch the entire item from the parent table. If the index is configured to project all item attributes, then all of the data can be obtained from the local secondary index, and no fetching is required.
    - ALL_PROJECTED_ATTRIBUTES - Allowed only when querying an index. Retrieves all attributes that have been projected into the index. If the index is configured to project all attributes, this return value is equivalent to specifying ALL_ATTRIBUTES.
    - COUNT - Returns the number of matching items, rather than the matching items themselves.
    - SPECIFIC_ATTRIBUTES - Returns only the attributes listed in AttributesToGet. This return value is equivalent to specifying AttributesToGet without specifying any value for Select.
      If you query a local secondary index and request only attributes that are projected into that index, the operation will read only the index and not the table. If any of the requested attributes are not projected into the local secondary index, DynamoDB will fetch each of these attributes from the parent table. This extra fetching incurs additional throughput cost and latency.
      If you query a global secondary index, you can only request attributes that are projected into the index. Global secondary index queries cannot fetch attributes from the parent table.
    If neither Select nor AttributesToGet are specified, DynamoDB defaults to ALL_ATTRIBUTES when accessing a table, and ALL_PROJECTED_ATTRIBUTES when accessing an index. You cannot use both Select and AttributesToGet together in a single request, unless the value for Select is SPECIFIC_ATTRIBUTES. (This usage is equivalent to specifying AttributesToGet without any value for Select.)
    If you use the ProjectionExpression parameter, then the value for Select can only be SPECIFIC_ATTRIBUTES. Any other value for Select will return an error.
    Constraints:
    Allowed Values: ALL_ATTRIBUTES, ALL_PROJECTED_ATTRIBUTES, SPECIFIC_ATTRIBUTES, COUNT
    Parameters:
    select - The attributes to be returned in the result. You can retrieve all item attributes, specific item attributes, the count of matching items, or in the case of an index, some or all of the attributes projected into the index.
    
    ALL_ATTRIBUTES - Returns all of the item attributes from the specified table or index. If you query a local secondary index, then for each matching item in the index DynamoDB will fetch the entire item from the parent table. If the index is configured to project all item attributes, then all of the data can be obtained from the local secondary index, and no fetching is required.
    
    ALL_PROJECTED_ATTRIBUTES - Allowed only when querying an index. Retrieves all attributes that have been projected into the index. If the index is configured to project all attributes, this return value is equivalent to specifying ALL_ATTRIBUTES.
    
    COUNT - Returns the number of matching items, rather than the matching items themselves.
    
    SPECIFIC_ATTRIBUTES - Returns only the attributes listed in AttributesToGet. This return value is equivalent to specifying AttributesToGet without specifying any value for Select.
    If you query a local secondary index and request only attributes that are projected into that index, the operation will read only the index and not the table. If any of the requested attributes are not projected into the local secondary index, DynamoDB will fetch each of these attributes from the parent table. This extra fetching incurs additional throughput cost and latency.
    If you query a global secondary index, you can only request attributes that are projected into the index. Global secondary index queries cannot fetch attributes from the parent table.
    
    If neither Select nor AttributesToGet are specified, DynamoDB defaults to ALL_ATTRIBUTES when accessing a table, and ALL_PROJECTED_ATTRIBUTES when accessing an index. You cannot use both Select and AttributesToGet together in a single request, unless the value for Select is SPECIFIC_ATTRIBUTES. (This usage is equivalent to specifying AttributesToGet without any value for Select.)
    If you use the ProjectionExpression parameter, then the value for Select can only be SPECIFIC_ATTRIBUTES. Any other value for Select will return an error.
    See Also:
    Select
  - withSelect
```
public QueryRequest withSelect(Select select)
```
    The attributes to be returned in the result. You can retrieve all item attributes, specific item attributes, the count of matching items, or in the case of an index, some or all of the attributes projected into the index.
    - ALL_ATTRIBUTES - Returns all of the item attributes from the specified table or index. If you query a local secondary index, then for each matching item in the index DynamoDB will fetch the entire item from the parent table. If the index is configured to project all item attributes, then all of the data can be obtained from the local secondary index, and no fetching is required.
    - ALL_PROJECTED_ATTRIBUTES - Allowed only when querying an index. Retrieves all attributes that have been projected into the index. If the index is configured to project all attributes, this return value is equivalent to specifying ALL_ATTRIBUTES.
    - COUNT - Returns the number of matching items, rather than the matching items themselves.
    - SPECIFIC_ATTRIBUTES - Returns only the attributes listed in AttributesToGet. This return value is equivalent to specifying AttributesToGet without specifying any value for Select.
      If you query a local secondary index and request only attributes that are projected into that index, the operation will read only the index and not the table. If any of the requested attributes are not projected into the local secondary index, DynamoDB will fetch each of these attributes from the parent table. This extra fetching incurs additional throughput cost and latency.
      If you query a global secondary index, you can only request attributes that are projected into the index. Global secondary index queries cannot fetch attributes from the parent table.
    If neither Select nor AttributesToGet are specified, DynamoDB defaults to ALL_ATTRIBUTES when accessing a table, and ALL_PROJECTED_ATTRIBUTES when accessing an index. You cannot use both Select and AttributesToGet together in a single request, unless the value for Select is SPECIFIC_ATTRIBUTES. (This usage is equivalent to specifying AttributesToGet without any value for Select.)
    If you use the ProjectionExpression parameter, then the value for Select can only be SPECIFIC_ATTRIBUTES. Any other value for Select will return an error.
    Returns a reference to this object so that method calls can be chained together.
    Constraints:
    Allowed Values: ALL_ATTRIBUTES, ALL_PROJECTED_ATTRIBUTES, SPECIFIC_ATTRIBUTES, COUNT
    Parameters:
    select - The attributes to be returned in the result. You can retrieve all item attributes, specific item attributes, the count of matching items, or in the case of an index, some or all of the attributes projected into the index.
    
    ALL_ATTRIBUTES - Returns all of the item attributes from the specified table or index. If you query a local secondary index, then for each matching item in the index DynamoDB will fetch the entire item from the parent table. If the index is configured to project all item attributes, then all of the data can be obtained from the local secondary index, and no fetching is required.
    
    ALL_PROJECTED_ATTRIBUTES - Allowed only when querying an index. Retrieves all attributes that have been projected into the index. If the index is configured to project all attributes, this return value is equivalent to specifying ALL_ATTRIBUTES.
    
    COUNT - Returns the number of matching items, rather than the matching items themselves.
    
    SPECIFIC_ATTRIBUTES - Returns only the attributes listed in AttributesToGet. This return value is equivalent to specifying AttributesToGet without specifying any value for Select.
    If you query a local secondary index and request only attributes that are projected into that index, the operation will read only the index and not the table. If any of the requested attributes are not projected into the local secondary index, DynamoDB will fetch each of these attributes from the parent table. This extra fetching incurs additional throughput cost and latency.
    If you query a global secondary index, you can only request attributes that are projected into the index. Global secondary index queries cannot fetch attributes from the parent table.
    
    If neither Select nor AttributesToGet are specified, DynamoDB defaults to ALL_ATTRIBUTES when accessing a table, and ALL_PROJECTED_ATTRIBUTES when accessing an index. You cannot use both Select and AttributesToGet together in a single request, unless the value for Select is SPECIFIC_ATTRIBUTES. (This usage is equivalent to specifying AttributesToGet without any value for Select.)
    If you use the ProjectionExpression parameter, then the value for Select can only be SPECIFIC_ATTRIBUTES. Any other value for Select will return an error.
    Returns:
    A reference to this updated object so that method calls can be chained together.
    See Also:
    Select
  - getAttributesToGet
```
public List<String> getAttributesToGet()
```
    This is a legacy parameter, for backward compatibility. New applications should use ProjectionExpression instead. Do not combine legacy parameters and expression parameters in a single API call; otherwise, DynamoDB will return a ValidationException exception.
    This parameter allows you to retrieve attributes of type List or Map; however, it cannot retrieve individual elements within a List or a Map.
    The names of one or more attributes to retrieve. If no attribute names are provided, then all attributes will be returned. If any of the requested attributes are not found, they will not appear in the result.
    Note that AttributesToGet has no effect on provisioned throughput consumption. DynamoDB determines capacity units consumed based on item size, not on the amount of data that is returned to an application.
    You cannot use both AttributesToGet and Select together in a Query request, unless the value for Select is SPECIFIC_ATTRIBUTES. (This usage is equivalent to specifying AttributesToGet without any value for Select.)
    If you query a local secondary index and request only attributes that are projected into that index, the operation will read only the index and not the table. If any of the requested attributes are not projected into the local secondary index, DynamoDB will fetch each of these attributes from the parent table. This extra fetching incurs additional throughput cost and latency.
    If you query a global secondary index, you can only request attributes that are projected into the index. Global secondary index queries cannot fetch attributes from the parent table.
    Constraints:
    Length: 1 -
    
    Returns:
    This is a legacy parameter, for backward compatibility. New applications should use ProjectionExpression instead. Do not combine legacy parameters and expression parameters in a single API call; otherwise, DynamoDB will return a ValidationException exception.
    This parameter allows you to retrieve attributes of type List or Map; however, it cannot retrieve individual elements within a List or a Map.
    The names of one or more attributes to retrieve. If no attribute names are provided, then all attributes will be returned. If any of the requested attributes are not found, they will not appear in the result.
    Note that AttributesToGet has no effect on provisioned throughput consumption. DynamoDB determines capacity units consumed based on item size, not on the amount of data that is returned to an application.
    You cannot use both AttributesToGet and Select together in a Query request, unless the value for Select is SPECIFIC_ATTRIBUTES. (This usage is equivalent to specifying AttributesToGet without any value for Select.)
    If you query a local secondary index and request only attributes that are projected into that index, the operation will read only the index and not the table. If any of the requested attributes are not projected into the local secondary index, DynamoDB will fetch each of these attributes from the parent table. This extra fetching incurs additional throughput cost and latency.
    If you query a global secondary index, you can only request attributes that are projected into the index. Global secondary index queries cannot fetch attributes from the parent table.
  - setAttributesToGet
```
public void setAttributesToGet(Collection<String> attributesToGet)
```
    This is a legacy parameter, for backward compatibility. New applications should use ProjectionExpression instead. Do not combine legacy parameters and expression parameters in a single API call; otherwise, DynamoDB will return a ValidationException exception.
    This parameter allows you to retrieve attributes of type List or Map; however, it cannot retrieve individual elements within a List or a Map.
    The names of one or more attributes to retrieve. If no attribute names are provided, then all attributes will be returned. If any of the requested attributes are not found, they will not appear in the result.
    Note that AttributesToGet has no effect on provisioned throughput consumption. DynamoDB determines capacity units consumed based on item size, not on the amount of data that is returned to an application.
    You cannot use both AttributesToGet and Select together in a Query request, unless the value for Select is SPECIFIC_ATTRIBUTES. (This usage is equivalent to specifying AttributesToGet without any value for Select.)
    If you query a local secondary index and request only attributes that are projected into that index, the operation will read only the index and not the table. If any of the requested attributes are not projected into the local secondary index, DynamoDB will fetch each of these attributes from the parent table. This extra fetching incurs additional throughput cost and latency.
    If you query a global secondary index, you can only request attributes that are projected into the index. Global secondary index queries cannot fetch attributes from the parent table.
    Constraints:
    Length: 1 -
    
    Parameters:
    attributesToGet -
    This is a legacy parameter, for backward compatibility. New applications should use ProjectionExpression instead. Do not combine legacy parameters and expression parameters in a single API call; otherwise, DynamoDB will return a ValidationException exception.
    This parameter allows you to retrieve attributes of type List or Map; however, it cannot retrieve individual elements within a List or a Map.
    The names of one or more attributes to retrieve. If no attribute names are provided, then all attributes will be returned. If any of the requested attributes are not found, they will not appear in the result.
    Note that AttributesToGet has no effect on provisioned throughput consumption. DynamoDB determines capacity units consumed based on item size, not on the amount of data that is returned to an application.
    You cannot use both AttributesToGet and Select together in a Query request, unless the value for Select is SPECIFIC_ATTRIBUTES. (This usage is equivalent to specifying AttributesToGet without any value for Select.)
    If you query a local secondary index and request only attributes that are projected into that index, the operation will read only the index and not the table. If any of the requested attributes are not projected into the local secondary index, DynamoDB will fetch each of these attributes from the parent table. This extra fetching incurs additional throughput cost and latency.
    If you query a global secondary index, you can only request attributes that are projected into the index. Global secondary index queries cannot fetch attributes from the parent table.
  - withAttributesToGet
```
public QueryRequest withAttributesToGet(String... attributesToGet)
```
    This is a legacy parameter, for backward compatibility. New applications should use ProjectionExpression instead. Do not combine legacy parameters and expression parameters in a single API call; otherwise, DynamoDB will return a ValidationException exception.
    This parameter allows you to retrieve attributes of type List or Map; however, it cannot retrieve individual elements within a List or a Map.
    The names of one or more attributes to retrieve. If no attribute names are provided, then all attributes will be returned. If any of the requested attributes are not found, they will not appear in the result.
    Note that AttributesToGet has no effect on provisioned throughput consumption. DynamoDB determines capacity units consumed based on item size, not on the amount of data that is returned to an application.
    You cannot use both AttributesToGet and Select together in a Query request, unless the value for Select is SPECIFIC_ATTRIBUTES. (This usage is equivalent to specifying AttributesToGet without any value for Select.)
    If you query a local secondary index and request only attributes that are projected into that index, the operation will read only the index and not the table. If any of the requested attributes are not projected into the local secondary index, DynamoDB will fetch each of these attributes from the parent table. This extra fetching incurs additional throughput cost and latency.
    If you query a global secondary index, you can only request attributes that are projected into the index. Global secondary index queries cannot fetch attributes from the parent table.
    NOTE: This method appends the values to the existing list (if any). Use setAttributesToGet(java.util.Collection) or withAttributesToGet(java.util.Collection) if you want to override the existing values.
    Returns a reference to this object so that method calls can be chained together.
    Constraints:
    Length: 1 -
    
    Parameters:
    attributesToGet -
    This is a legacy parameter, for backward compatibility. New applications should use ProjectionExpression instead. Do not combine legacy parameters and expression parameters in a single API call; otherwise, DynamoDB will return a ValidationException exception.
    This parameter allows you to retrieve attributes of type List or Map; however, it cannot retrieve individual elements within a List or a Map.
    The names of one or more attributes to retrieve. If no attribute names are provided, then all attributes will be returned. If any of the requested attributes are not found, they will not appear in the result.
    Note that AttributesToGet has no effect on provisioned throughput consumption. DynamoDB determines capacity units consumed based on item size, not on the amount of data that is returned to an application.
    You cannot use both AttributesToGet and Select together in a Query request, unless the value for Select is SPECIFIC_ATTRIBUTES. (This usage is equivalent to specifying AttributesToGet without any value for Select.)
    If you query a local secondary index and request only attributes that are projected into that index, the operation will read only the index and not the table. If any of the requested attributes are not projected into the local secondary index, DynamoDB will fetch each of these attributes from the parent table. This extra fetching incurs additional throughput cost and latency.
    If you query a global secondary index, you can only request attributes that are projected into the index. Global secondary index queries cannot fetch attributes from the parent table.
    
    Returns:
    A reference to this updated object so that method calls can be chained together.
  - withAttributesToGet
```
public QueryRequest withAttributesToGet(Collection<String> attributesToGet)
```
    This is a legacy parameter, for backward compatibility. New applications should use ProjectionExpression instead. Do not combine legacy parameters and expression parameters in a single API call; otherwise, DynamoDB will return a ValidationException exception.
    This parameter allows you to retrieve attributes of type List or Map; however, it cannot retrieve individual elements within a List or a Map.
    The names of one or more attributes to retrieve. If no attribute names are provided, then all attributes will be returned. If any of the requested attributes are not found, they will not appear in the result.
    Note that AttributesToGet has no effect on provisioned throughput consumption. DynamoDB determines capacity units consumed based on item size, not on the amount of data that is returned to an application.
    You cannot use both AttributesToGet and Select together in a Query request, unless the value for Select is SPECIFIC_ATTRIBUTES. (This usage is equivalent to specifying AttributesToGet without any value for Select.)
    If you query a local secondary index and request only attributes that are projected into that index, the operation will read only the index and not the table. If any of the requested attributes are not projected into the local secondary index, DynamoDB will fetch each of these attributes from the parent table. This extra fetching incurs additional throughput cost and latency.
    If you query a global secondary index, you can only request attributes that are projected into the index. Global secondary index queries cannot fetch attributes from the parent table.
    Returns a reference to this object so that method calls can be chained together.
    Constraints:
    Length: 1 -
    
    Parameters:
    attributesToGet -
    This is a legacy parameter, for backward compatibility. New applications should use ProjectionExpression instead. Do not combine legacy parameters and expression parameters in a single API call; otherwise, DynamoDB will return a ValidationException exception.
    This parameter allows you to retrieve attributes of type List or Map; however, it cannot retrieve individual elements within a List or a Map.
    The names of one or more attributes to retrieve. If no attribute names are provided, then all attributes will be returned. If any of the requested attributes are not found, they will not appear in the result.
    Note that AttributesToGet has no effect on provisioned throughput consumption. DynamoDB determines capacity units consumed based on item size, not on the amount of data that is returned to an application.
    You cannot use both AttributesToGet and Select together in a Query request, unless the value for Select is SPECIFIC_ATTRIBUTES. (This usage is equivalent to specifying AttributesToGet without any value for Select.)
    If you query a local secondary index and request only attributes that are projected into that index, the operation will read only the index and not the table. If any of the requested attributes are not projected into the local secondary index, DynamoDB will fetch each of these attributes from the parent table. This extra fetching incurs additional throughput cost and latency.
    If you query a global secondary index, you can only request attributes that are projected into the index. Global secondary index queries cannot fetch attributes from the parent table.
    
    Returns:
    A reference to this updated object so that method calls can be chained together.
  - getLimit
```
public Integer getLimit()
```
    The maximum number of items to evaluate (not necessarily the number of matching items). If DynamoDB processes the number of items up to the limit while processing the results, it stops the operation and returns the matching values up to that point, and a key in LastEvaluatedKey to apply in a subsequent operation, so that you can pick up where you left off. Also, if the processed data set size exceeds 1 MB before DynamoDB reaches this limit, it stops the operation and returns the matching values up to the limit, and a key in LastEvaluatedKey to apply in a subsequent operation to continue the operation. For more information, see Query and Scan in the Amazon DynamoDB Developer Guide.
    Constraints:
    Range: 1 -
    
    Returns:
    The maximum number of items to evaluate (not necessarily the number of matching items). If DynamoDB processes the number of items up to the limit while processing the results, it stops the operation and returns the matching values up to that point, and a key in LastEvaluatedKey to apply in a subsequent operation, so that you can pick up where you left off. Also, if the processed data set size exceeds 1 MB before DynamoDB reaches this limit, it stops the operation and returns the matching values up to the limit, and a key in LastEvaluatedKey to apply in a subsequent operation to continue the operation. For more information, see Query and Scan in the Amazon DynamoDB Developer Guide.
  - setLimit
```
public void setLimit(Integer limit)
```
    The maximum number of items to evaluate (not necessarily the number of matching items). If DynamoDB processes the number of items up to the limit while processing the results, it stops the operation and returns the matching values up to that point, and a key in LastEvaluatedKey to apply in a subsequent operation, so that you can pick up where you left off. Also, if the processed data set size exceeds 1 MB before DynamoDB reaches this limit, it stops the operation and returns the matching values up to the limit, and a key in LastEvaluatedKey to apply in a subsequent operation to continue the operation. For more information, see Query and Scan in the Amazon DynamoDB Developer Guide.
    Constraints:
    Range: 1 -
    
    Parameters:
    limit - The maximum number of items to evaluate (not necessarily the number of matching items). If DynamoDB processes the number of items up to the limit while processing the results, it stops the operation and returns the matching values up to that point, and a key in LastEvaluatedKey to apply in a subsequent operation, so that you can pick up where you left off. Also, if the processed data set size exceeds 1 MB before DynamoDB reaches this limit, it stops the operation and returns the matching values up to the limit, and a key in LastEvaluatedKey to apply in a subsequent operation to continue the operation. For more information, see Query and Scan in the Amazon DynamoDB Developer Guide.
  - withLimit
```
public QueryRequest withLimit(Integer limit)
```
    The maximum number of items to evaluate (not necessarily the number of matching items). If DynamoDB processes the number of items up to the limit while processing the results, it stops the operation and returns the matching values up to that point, and a key in LastEvaluatedKey to apply in a subsequent operation, so that you can pick up where you left off. Also, if the processed data set size exceeds 1 MB before DynamoDB reaches this limit, it stops the operation and returns the matching values up to the limit, and a key in LastEvaluatedKey to apply in a subsequent operation to continue the operation. For more information, see Query and Scan in the Amazon DynamoDB Developer Guide.
    Returns a reference to this object so that method calls can be chained together.
    Constraints:
    Range: 1 -
    
    Parameters:
    limit - The maximum number of items to evaluate (not necessarily the number of matching items). If DynamoDB processes the number of items up to the limit while processing the results, it stops the operation and returns the matching values up to that point, and a key in LastEvaluatedKey to apply in a subsequent operation, so that you can pick up where you left off. Also, if the processed data set size exceeds 1 MB before DynamoDB reaches this limit, it stops the operation and returns the matching values up to the limit, and a key in LastEvaluatedKey to apply in a subsequent operation to continue the operation. For more information, see Query and Scan in the Amazon DynamoDB Developer Guide.
    
    Returns:
    A reference to this updated object so that method calls can be chained together.
  - isConsistentRead
```
public Boolean isConsistentRead()
```
    A value that if set to true, then the operation uses strongly consistent reads; otherwise, eventually consistent reads are used.
    Strongly consistent reads are not supported on global secondary indexes. If you query a global secondary index with ConsistentRead set to true, you will receive an error message.
    
    Returns:
    A value that if set to true, then the operation uses strongly consistent reads; otherwise, eventually consistent reads are used.
    Strongly consistent reads are not supported on global secondary indexes. If you query a global secondary index with ConsistentRead set to true, you will receive an error message.
  - setConsistentRead
```
public void setConsistentRead(Boolean consistentRead)
```
    A value that if set to true, then the operation uses strongly consistent reads; otherwise, eventually consistent reads are used.
    Strongly consistent reads are not supported on global secondary indexes. If you query a global secondary index with ConsistentRead set to true, you will receive an error message.
    
    Parameters:
    consistentRead - A value that if set to true, then the operation uses strongly consistent reads; otherwise, eventually consistent reads are used.
    Strongly consistent reads are not supported on global secondary indexes. If you query a global secondary index with ConsistentRead set to true, you will receive an error message.
  - withConsistentRead
```
public QueryRequest withConsistentRead(Boolean consistentRead)
```
    A value that if set to true, then the operation uses strongly consistent reads; otherwise, eventually consistent reads are used.
    Strongly consistent reads are not supported on global secondary indexes. If you query a global secondary index with ConsistentRead set to true, you will receive an error message.
    Returns a reference to this object so that method calls can be chained together.
    
    Parameters:
    consistentRead - A value that if set to true, then the operation uses strongly consistent reads; otherwise, eventually consistent reads are used.
    Strongly consistent reads are not supported on global secondary indexes. If you query a global secondary index with ConsistentRead set to true, you will receive an error message.
    
    Returns:
    A reference to this updated object so that method calls can be chained together.
  - getConsistentRead
```
public Boolean getConsistentRead()
```
    A value that if set to true, then the operation uses strongly consistent reads; otherwise, eventually consistent reads are used.
    Strongly consistent reads are not supported on global secondary indexes. If you query a global secondary index with ConsistentRead set to true, you will receive an error message.
    
    Returns:
    A value that if set to true, then the operation uses strongly consistent reads; otherwise, eventually consistent reads are used.
    Strongly consistent reads are not supported on global secondary indexes. If you query a global secondary index with ConsistentRead set to true, you will receive an error message.
  - getKeyConditions
```
public Map<String,Condition> getKeyConditions()
```
    This is a legacy parameter, for backward compatibility. New applications should use KeyConditionExpression instead. Do not combine legacy parameters and expression parameters in a single API call; otherwise, DynamoDB will return a ValidationException exception.
    The selection criteria for the query. For a query on a table, you can have conditions only on the table primary key attributes. You must provide the hash key attribute name and value as an EQ condition. You can optionally provide a second condition, referring to the range key attribute.
    If you don't provide a range key condition, all of the items that match the hash key will be retrieved. If a FilterExpression or QueryFilter is present, it will be applied after the items are retrieved.
    For a query on an index, you can have conditions only on the index key attributes. You must provide the index hash attribute name and value as an EQ condition. You can optionally provide a second condition, referring to the index key range attribute.
    Each KeyConditions element consists of an attribute name to compare, along with the following:
    
    AttributeValueList - One or more values to evaluate against the supplied attribute. The number of values in the list depends on the ComparisonOperator being used.
    For type Number, value comparisons are numeric.
    String value comparisons for greater than, equals, or less than are based on ASCII character code values. For example, a is greater than A, and a is greater than B. For a list of code values, see http://en.wikipedia.org/wiki/ASCII#ASCII_printable_characters.
    For Binary, DynamoDB treats each byte of the binary data as unsigned when it compares binary values.
    
    ComparisonOperator - A comparator for evaluating attributes, for example, equals, greater than, less than, and so on.
    For KeyConditions, only the following comparison operators are supported:
    EQ | LE | LT | GE | GT | BEGINS_WITH | BETWEEN
    The following are descriptions of these comparison operators.
    
    EQ : Equal.
    AttributeValueList can contain only one AttributeValue of type String, Number, or Binary (not a set type). If an item contains an AttributeValue element of a different type than the one specified in the request, the value does not match. For example, {"S":"6"} does not equal {"N":"6"}. Also, {"N":"6"} does not equal {"NS":["6", "2", "1"]}.
    
    LE : Less than or equal.
    AttributeValueList can contain only one AttributeValue element of type String, Number, or Binary (not a set type). If an item contains an AttributeValue element of a different type than the one provided in the request, the value does not match. For example, {"S":"6"} does not equal {"N":"6"}. Also, {"N":"6"} does not compare to {"NS":["6", "2", "1"]}.
    
    LT : Less than.
    AttributeValueList can contain only one AttributeValue of type String, Number, or Binary (not a set type). If an item contains an AttributeValue element of a different type than the one provided in the request, the value does not match. For example, {"S":"6"} does not equal {"N":"6"}. Also, {"N":"6"} does not compare to {"NS":["6", "2", "1"]}.
    
    GE : Greater than or equal.
    AttributeValueList can contain only one AttributeValue element of type String, Number, or Binary (not a set type). If an item contains an AttributeValue element of a different type than the one provided in the request, the value does not match. For example, {"S":"6"} does not equal {"N":"6"}. Also, {"N":"6"} does not compare to {"NS":["6", "2", "1"]}.
    
    GT : Greater than.
    AttributeValueList can contain only one AttributeValue element of type String, Number, or Binary (not a set type). If an item contains an AttributeValue element of a different type than the one provided in the request, the value does not match. For example, {"S":"6"} does not equal {"N":"6"}. Also, {"N":"6"} does not compare to {"NS":["6", "2", "1"]}.
    
    BEGINS_WITH : Checks for a prefix.
    AttributeValueList can contain only one AttributeValue of type String or Binary (not a Number or a set type). The target attribute of the comparison must be of type String or Binary (not a Number or a set type).
    
    BETWEEN : Greater than or equal to the first value, and less than or equal to the second value.
    AttributeValueList must contain two AttributeValue elements of the same type, either String, Number, or Binary (not a set type). A target attribute matches if the target value is greater than, or equal to, the first element and less than, or equal to, the second element. If an item contains an AttributeValue element of a different type than the one provided in the request, the value does not match. For example, {"S":"6"} does not compare to {"N":"6"}. Also, {"N":"6"} does not compare to {"NS":["6", "2", "1"]}
    
    For usage examples of AttributeValueList and ComparisonOperator, see Legacy Conditional Parameters in the Amazon DynamoDB Developer Guide.
    Returns:
    This is a legacy parameter, for backward compatibility. New applications should use KeyConditionExpression instead. Do not combine legacy parameters and expression parameters in a single API call; otherwise, DynamoDB will return a ValidationException exception.
    The selection criteria for the query. For a query on a table, you can have conditions only on the table primary key attributes. You must provide the hash key attribute name and value as an EQ condition. You can optionally provide a second condition, referring to the range key attribute.
    If you don't provide a range key condition, all of the items that match the hash key will be retrieved. If a FilterExpression or QueryFilter is present, it will be applied after the items are retrieved.
    For a query on an index, you can have conditions only on the index key attributes. You must provide the index hash attribute name and value as an EQ condition. You can optionally provide a second condition, referring to the index key range attribute.
    Each KeyConditions element consists of an attribute name to compare, along with the following:
    
    AttributeValueList - One or more values to evaluate against the supplied attribute. The number of values in the list depends on the ComparisonOperator being used.
    For type Number, value comparisons are numeric.
    String value comparisons for greater than, equals, or less than are based on ASCII character code values. For example, a is greater than A, and a is greater than B. For a list of code values, see http://en.wikipedia.org/wiki/ASCII#ASCII_printable_characters.
    For Binary, DynamoDB treats each byte of the binary data as unsigned when it compares binary values.
    
    ComparisonOperator - A comparator for evaluating attributes, for example, equals, greater than, less than, and so on.
    For KeyConditions, only the following comparison operators are supported:
    EQ | LE | LT | GE | GT | BEGINS_WITH | BETWEEN
    The following are descriptions of these comparison operators.
    
    EQ : Equal.
    AttributeValueList can contain only one AttributeValue of type String, Number, or Binary (not a set type). If an item contains an AttributeValue element of a different type than the one specified in the request, the value does not match. For example, {"S":"6"} does not equal {"N":"6"}. Also, {"N":"6"} does not equal {"NS":["6", "2", "1"]}.
    
    LE : Less than or equal.
    AttributeValueList can contain only one AttributeValue element of type String, Number, or Binary (not a set type). If an item contains an AttributeValue element of a different type than the one provided in the request, the value does not match. For example, {"S":"6"} does not equal {"N":"6"}. Also, {"N":"6"} does not compare to {"NS":["6", "2", "1"]}.
    
    LT : Less than.
    AttributeValueList can contain only one AttributeValue of type String, Number, or Binary (not a set type). If an item contains an AttributeValue element of a different type than the one provided in the request, the value does not match. For example, {"S":"6"} does not equal {"N":"6"}. Also, {"N":"6"} does not compare to {"NS":["6", "2", "1"]}.
    
    GE : Greater than or equal.
    AttributeValueList can contain only one AttributeValue element of type String, Number, or Binary (not a set type). If an item contains an AttributeValue element of a different type than the one provided in the request, the value does not match. For example, {"S":"6"} does not equal {"N":"6"}. Also, {"N":"6"} does not compare to {"NS":["6", "2", "1"]}.
    
    GT : Greater than.
    AttributeValueList can contain only one AttributeValue element of type String, Number, or Binary (not a set type). If an item contains an AttributeValue element of a different type than the one provided in the request, the value does not match. For example, {"S":"6"} does not equal {"N":"6"}. Also, {"N":"6"} does not compare to {"NS":["6", "2", "1"]}.
    
    BEGINS_WITH : Checks for a prefix.
    AttributeValueList can contain only one AttributeValue of type String or Binary (not a Number or a set type). The target attribute of the comparison must be of type String or Binary (not a Number or a set type).
    
    BETWEEN : Greater than or equal to the first value, and less than or equal to the second value.
    AttributeValueList must contain two AttributeValue elements of the same type, either String, Number, or Binary (not a set type). A target attribute matches if the target value is greater than, or equal to, the first element and less than, or equal to, the second element. If an item contains an AttributeValue element of a different type than the one provided in the request, the value does not match. For example, {"S":"6"} does not compare to {"N":"6"}. Also, {"N":"6"} does not compare to {"NS":["6", "2", "1"]}
    
    For usage examples of AttributeValueList and ComparisonOperator, see Legacy Conditional Parameters in the Amazon DynamoDB Developer Guide.
  - setKeyConditions
```
public void setKeyConditions(Map<String,Condition> keyConditions)
```
    This is a legacy parameter, for backward compatibility. New applications should use KeyConditionExpression instead. Do not combine legacy parameters and expression parameters in a single API call; otherwise, DynamoDB will return a ValidationException exception.
    The selection criteria for the query. For a query on a table, you can have conditions only on the table primary key attributes. You must provide the hash key attribute name and value as an EQ condition. You can optionally provide a second condition, referring to the range key attribute.
    If you don't provide a range key condition, all of the items that match the hash key will be retrieved. If a FilterExpression or QueryFilter is present, it will be applied after the items are retrieved.
    For a query on an index, you can have conditions only on the index key attributes. You must provide the index hash attribute name and value as an EQ condition. You can optionally provide a second condition, referring to the index key range attribute.
    Each KeyConditions element consists of an attribute name to compare, along with the following:
    
    AttributeValueList - One or more values to evaluate against the supplied attribute. The number of values in the list depends on the ComparisonOperator being used.
    For type Number, value comparisons are numeric.
    String value comparisons for greater than, equals, or less than are based on ASCII character code values. For example, a is greater than A, and a is greater than B. For a list of code values, see http://en.wikipedia.org/wiki/ASCII#ASCII_printable_characters.
    For Binary, DynamoDB treats each byte of the binary data as unsigned when it compares binary values.
    
    ComparisonOperator - A comparator for evaluating attributes, for example, equals, greater than, less than, and so on.
    For KeyConditions, only the following comparison operators are supported:
    EQ | LE | LT | GE | GT | BEGINS_WITH | BETWEEN
    The following are descriptions of these comparison operators.
    
    EQ : Equal.
    AttributeValueList can contain only one AttributeValue of type String, Number, or Binary (not a set type). If an item contains an AttributeValue element of a different type than the one specified in the request, the value does not match. For example, {"S":"6"} does not equal {"N":"6"}. Also, {"N":"6"} does not equal {"NS":["6", "2", "1"]}.
    
    LE : Less than or equal.
    AttributeValueList can contain only one AttributeValue element of type String, Number, or Binary (not a set type). If an item contains an AttributeValue element of a different type than the one provided in the request, the value does not match. For example, {"S":"6"} does not equal {"N":"6"}. Also, {"N":"6"} does not compare to {"NS":["6", "2", "1"]}.
    
    LT : Less than.
    AttributeValueList can contain only one AttributeValue of type String, Number, or Binary (not a set type). If an item contains an AttributeValue element of a different type than the one provided in the request, the value does not match. For example, {"S":"6"} does not equal {"N":"6"}. Also, {"N":"6"} does not compare to {"NS":["6", "2", "1"]}.
    
    GE : Greater than or equal.
    AttributeValueList can contain only one AttributeValue element of type String, Number, or Binary (not a set type). If an item contains an AttributeValue element of a different type than the one provided in the request, the value does not match. For example, {"S":"6"} does not equal {"N":"6"}. Also, {"N":"6"} does not compare to {"NS":["6", "2", "1"]}.
    
    GT : Greater than.
    AttributeValueList can contain only one AttributeValue element of type String, Number, or Binary (not a set type). If an item contains an AttributeValue element of a different type than the one provided in the request, the value does not match. For example, {"S":"6"} does not equal {"N":"6"}. Also, {"N":"6"} does not compare to {"NS":["6", "2", "1"]}.
    
    BEGINS_WITH : Checks for a prefix.
    AttributeValueList can contain only one AttributeValue of type String or Binary (not a Number or a set type). The target attribute of the comparison must be of type String or Binary (not a Number or a set type).
    
    BETWEEN : Greater than or equal to the first value, and less than or equal to the second value.
    AttributeValueList must contain two AttributeValue elements of the same type, either String, Number, or Binary (not a set type). A target attribute matches if the target value is greater than, or equal to, the first element and less than, or equal to, the second element. If an item contains an AttributeValue element of a different type than the one provided in the request, the value does not match. For example, {"S":"6"} does not compare to {"N":"6"}. Also, {"N":"6"} does not compare to {"NS":["6", "2", "1"]}
    
    For usage examples of AttributeValueList and ComparisonOperator, see Legacy Conditional Parameters in the Amazon DynamoDB Developer Guide.
    Parameters:
    keyConditions -
    This is a legacy parameter, for backward compatibility. New applications should use KeyConditionExpression instead. Do not combine legacy parameters and expression parameters in a single API call; otherwise, DynamoDB will return a ValidationException exception.
    The selection criteria for the query. For a query on a table, you can have conditions only on the table primary key attributes. You must provide the hash key attribute name and value as an EQ condition. You can optionally provide a second condition, referring to the range key attribute.
    If you don't provide a range key condition, all of the items that match the hash key will be retrieved. If a FilterExpression or QueryFilter is present, it will be applied after the items are retrieved.
    For a query on an index, you can have conditions only on the index key attributes. You must provide the index hash attribute name and value as an EQ condition. You can optionally provide a second condition, referring to the index key range attribute.
    Each KeyConditions element consists of an attribute name to compare, along with the following:
    
    AttributeValueList - One or more values to evaluate against the supplied attribute. The number of values in the list depends on the ComparisonOperator being used.
    For type Number, value comparisons are numeric.
    String value comparisons for greater than, equals, or less than are based on ASCII character code values. For example, a is greater than A, and a is greater than B. For a list of code values, see http://en.wikipedia.org/wiki/ASCII#ASCII_printable_characters.
    For Binary, DynamoDB treats each byte of the binary data as unsigned when it compares binary values.
    
    ComparisonOperator - A comparator for evaluating attributes, for example, equals, greater than, less than, and so on.
    For KeyConditions, only the following comparison operators are supported:
    EQ | LE | LT | GE | GT | BEGINS_WITH | BETWEEN
    The following are descriptions of these comparison operators.
    
    EQ : Equal.
    AttributeValueList can contain only one AttributeValue of type String, Number, or Binary (not a set type). If an item contains an AttributeValue element of a different type than the one specified in the request, the value does not match. For example, {"S":"6"} does not equal {"N":"6"}. Also, {"N":"6"} does not equal {"NS":["6", "2", "1"]}.
    
    LE : Less than or equal.
    AttributeValueList can contain only one AttributeValue element of type String, Number, or Binary (not a set type). If an item contains an AttributeValue element of a different type than the one provided in the request, the value does not match. For example, {"S":"6"} does not equal {"N":"6"}. Also, {"N":"6"} does not compare to {"NS":["6", "2", "1"]}.
    
    LT : Less than.
    AttributeValueList can contain only one AttributeValue of type String, Number, or Binary (not a set type). If an item contains an AttributeValue element of a different type than the one provided in the request, the value does not match. For example, {"S":"6"} does not equal {"N":"6"}. Also, {"N":"6"} does not compare to {"NS":["6", "2", "1"]}.
    
    GE : Greater than or equal.
    AttributeValueList can contain only one AttributeValue element of type String, Number, or Binary (not a set type). If an item contains an AttributeValue element of a different type than the one provided in the request, the value does not match. For example, {"S":"6"} does not equal {"N":"6"}. Also, {"N":"6"} does not compare to {"NS":["6", "2", "1"]}.
    
    GT : Greater than.
    AttributeValueList can contain only one AttributeValue element of type String, Number, or Binary (not a set type). If an item contains an AttributeValue element of a different type than the one provided in the request, the value does not match. For example, {"S":"6"} does not equal {"N":"6"}. Also, {"N":"6"} does not compare to {"NS":["6", "2", "1"]}.
    
    BEGINS_WITH : Checks for a prefix.
    AttributeValueList can contain only one AttributeValue of type String or Binary (not a Number or a set type). The target attribute of the comparison must be of type String or Binary (not a Number or a set type).
    
    BETWEEN : Greater than or equal to the first value, and less than or equal to the second value.
    AttributeValueList must contain two AttributeValue elements of the same type, either String, Number, or Binary (not a set type). A target attribute matches if the target value is greater than, or equal to, the first element and less than, or equal to, the second element. If an item contains an AttributeValue element of a different type than the one provided in the request, the value does not match. For example, {"S":"6"} does not compare to {"N":"6"}. Also, {"N":"6"} does not compare to {"NS":["6", "2", "1"]}
    
    For usage examples of AttributeValueList and ComparisonOperator, see Legacy Conditional Parameters in the Amazon DynamoDB Developer Guide.
  - withKeyConditions
```
public QueryRequest withKeyConditions(Map<String,Condition> keyConditions)
```
    This is a legacy parameter, for backward compatibility. New applications should use KeyConditionExpression instead. Do not combine legacy parameters and expression parameters in a single API call; otherwise, DynamoDB will return a ValidationException exception.
    The selection criteria for the query. For a query on a table, you can have conditions only on the table primary key attributes. You must provide the hash key attribute name and value as an EQ condition. You can optionally provide a second condition, referring to the range key attribute.
    If you don't provide a range key condition, all of the items that match the hash key will be retrieved. If a FilterExpression or QueryFilter is present, it will be applied after the items are retrieved.
    For a query on an index, you can have conditions only on the index key attributes. You must provide the index hash attribute name and value as an EQ condition. You can optionally provide a second condition, referring to the index key range attribute.
    Each KeyConditions element consists of an attribute name to compare, along with the following:
    
    AttributeValueList - One or more values to evaluate against the supplied attribute. The number of values in the list depends on the ComparisonOperator being used.
    For type Number, value comparisons are numeric.
    String value comparisons for greater than, equals, or less than are based on ASCII character code values. For example, a is greater than A, and a is greater than B. For a list of code values, see http://en.wikipedia.org/wiki/ASCII#ASCII_printable_characters.
    For Binary, DynamoDB treats each byte of the binary data as unsigned when it compares binary values.
    
    ComparisonOperator - A comparator for evaluating attributes, for example, equals, greater than, less than, and so on.
    For KeyConditions, only the following comparison operators are supported:
    EQ | LE | LT | GE | GT | BEGINS_WITH | BETWEEN
    The following are descriptions of these comparison operators.
    
    EQ : Equal.
    AttributeValueList can contain only one AttributeValue of type String, Number, or Binary (not a set type). If an item contains an AttributeValue element of a different type than the one specified in the request, the value does not match. For example, {"S":"6"} does not equal {"N":"6"}. Also, {"N":"6"} does not equal {"NS":["6", "2", "1"]}.
    
    LE : Less than or equal.
    AttributeValueList can contain only one AttributeValue element of type String, Number, or Binary (not a set type). If an item contains an AttributeValue element of a different type than the one provided in the request, the value does not match. For example, {"S":"6"} does not equal {"N":"6"}. Also, {"N":"6"} does not compare to {"NS":["6", "2", "1"]}.
    
    LT : Less than.
    AttributeValueList can contain only one AttributeValue of type String, Number, or Binary (not a set type). If an item contains an AttributeValue element of a different type than the one provided in the request, the value does not match. For example, {"S":"6"} does not equal {"N":"6"}. Also, {"N":"6"} does not compare to {"NS":["6", "2", "1"]}.
    
    GE : Greater than or equal.
    AttributeValueList can contain only one AttributeValue element of type String, Number, or Binary (not a set type). If an item contains an AttributeValue element of a different type than the one provided in the request, the value does not match. For example, {"S":"6"} does not equal {"N":"6"}. Also, {"N":"6"} does not compare to {"NS":["6", "2", "1"]}.
    
    GT : Greater than.
    AttributeValueList can contain only one AttributeValue element of type String, Number, or Binary (not a set type). If an item contains an AttributeValue element of a different type than the one provided in the request, the value does not match. For example, {"S":"6"} does not equal {"N":"6"}. Also, {"N":"6"} does not compare to {"NS":["6", "2", "1"]}.
    
    BEGINS_WITH : Checks for a prefix.
    AttributeValueList can contain only one AttributeValue of type String or Binary (not a Number or a set type). The target attribute of the comparison must be of type String or Binary (not a Number or a set type).
    
    BETWEEN : Greater than or equal to the first value, and less than or equal to the second value.
    AttributeValueList must contain two AttributeValue elements of the same type, either String, Number, or Binary (not a set type). A target attribute matches if the target value is greater than, or equal to, the first element and less than, or equal to, the second element. If an item contains an AttributeValue element of a different type than the one provided in the request, the value does not match. For example, {"S":"6"} does not compare to {"N":"6"}. Also, {"N":"6"} does not compare to {"NS":["6", "2", "1"]}
    
    For usage examples of AttributeValueList and ComparisonOperator, see Legacy Conditional Parameters in the Amazon DynamoDB Developer Guide.
    Returns a reference to this object so that method calls can be chained together.
    Parameters:
    keyConditions -
    This is a legacy parameter, for backward compatibility. New applications should use KeyConditionExpression instead. Do not combine legacy parameters and expression parameters in a single API call; otherwise, DynamoDB will return a ValidationException exception.
    The selection criteria for the query. For a query on a table, you can have conditions only on the table primary key attributes. You must provide the hash key attribute name and value as an EQ condition. You can optionally provide a second condition, referring to the range key attribute.
    If you don't provide a range key condition, all of the items that match the hash key will be retrieved. If a FilterExpression or QueryFilter is present, it will be applied after the items are retrieved.
    For a query on an index, you can have conditions only on the index key attributes. You must provide the index hash attribute name and value as an EQ condition. You can optionally provide a second condition, referring to the index key range attribute.
    Each KeyConditions element consists of an attribute name to compare, along with the following:
    
    AttributeValueList - One or more values to evaluate against the supplied attribute. The number of values in the list depends on the ComparisonOperator being used.
    For type Number, value comparisons are numeric.
    String value comparisons for greater than, equals, or less than are based on ASCII character code values. For example, a is greater than A, and a is greater than B. For a list of code values, see http://en.wikipedia.org/wiki/ASCII#ASCII_printable_characters.
    For Binary, DynamoDB treats each byte of the binary data as unsigned when it compares binary values.
    
    ComparisonOperator - A comparator for evaluating attributes, for example, equals, greater than, less than, and so on.
    For KeyConditions, only the following comparison operators are supported:
    EQ | LE | LT | GE | GT | BEGINS_WITH | BETWEEN
    The following are descriptions of these comparison operators.
    
    EQ : Equal.
    AttributeValueList can contain only one AttributeValue of type String, Number, or Binary (not a set type). If an item contains an AttributeValue element of a different type than the one specified in the request, the value does not match. For example, {"S":"6"} does not equal {"N":"6"}. Also, {"N":"6"} does not equal {"NS":["6", "2", "1"]}.
    
    LE : Less than or equal.
    AttributeValueList can contain only one AttributeValue element of type String, Number, or Binary (not a set type). If an item contains an AttributeValue element of a different type than the one provided in the request, the value does not match. For example, {"S":"6"} does not equal {"N":"6"}. Also, {"N":"6"} does not compare to {"NS":["6", "2", "1"]}.
    
    LT : Less than.
    AttributeValueList can contain only one AttributeValue of type String, Number, or Binary (not a set type). If an item contains an AttributeValue element of a different type than the one provided in the request, the value does not match. For example, {"S":"6"} does not equal {"N":"6"}. Also, {"N":"6"} does not compare to {"NS":["6", "2", "1"]}.
    
    GE : Greater than or equal.
    AttributeValueList can contain only one AttributeValue element of type String, Number, or Binary (not a set type). If an item contains an AttributeValue element of a different type than the one provided in the request, the value does not match. For example, {"S":"6"} does not equal {"N":"6"}. Also, {"N":"6"} does not compare to {"NS":["6", "2", "1"]}.
    
    GT : Greater than.
    AttributeValueList can contain only one AttributeValue element of type String, Number, or Binary (not a set type). If an item contains an AttributeValue element of a different type than the one provided in the request, the value does not match. For example, {"S":"6"} does not equal {"N":"6"}. Also, {"N":"6"} does not compare to {"NS":["6", "2", "1"]}.
    
    BEGINS_WITH : Checks for a prefix.
    AttributeValueList can contain only one AttributeValue of type String or Binary (not a Number or a set type). The target attribute of the comparison must be of type String or Binary (not a Number or a set type).
    
    BETWEEN : Greater than or equal to the first value, and less than or equal to the second value.
    AttributeValueList must contain two AttributeValue elements of the same type, either String, Number, or Binary (not a set type). A target attribute matches if the target value is greater than, or equal to, the first element and less than, or equal to, the second element. If an item contains an AttributeValue element of a different type than the one provided in the request, the value does not match. For example, {"S":"6"} does not compare to {"N":"6"}. Also, {"N":"6"} does not compare to {"NS":["6", "2", "1"]}
    
    For usage examples of AttributeValueList and ComparisonOperator, see Legacy Conditional Parameters in the Amazon DynamoDB Developer Guide.
    Returns:
    A reference to this updated object so that method calls can be chained together.
  - addKeyConditionsEntry
```
public QueryRequest addKeyConditionsEntry(String key,
                                 Condition value)
```
    This is a legacy parameter, for backward compatibility. New applications should use KeyConditionExpression instead. Do not combine legacy parameters and expression parameters in a single API call; otherwise, DynamoDB will return a ValidationException exception.
    The selection criteria for the query. For a query on a table, you can have conditions only on the table primary key attributes. You must provide the hash key attribute name and value as an EQ condition. You can optionally provide a second condition, referring to the range key attribute.
    If you don't provide a range key condition, all of the items that match the hash key will be retrieved. If a FilterExpression or QueryFilter is present, it will be applied after the items are retrieved.
    For a query on an index, you can have conditions only on the index key attributes. You must provide the index hash attribute name and value as an EQ condition. You can optionally provide a second condition, referring to the index key range attribute.
    Each KeyConditions element consists of an attribute name to compare, along with the following:
    
    AttributeValueList - One or more values to evaluate against the supplied attribute. The number of values in the list depends on the ComparisonOperator being used.
    For type Number, value comparisons are numeric.
    String value comparisons for greater than, equals, or less than are based on ASCII character code values. For example, a is greater than A, and a is greater than B. For a list of code values, see http://en.wikipedia.org/wiki/ASCII#ASCII_printable_characters.
    For Binary, DynamoDB treats each byte of the binary data as unsigned when it compares binary values.
    
    ComparisonOperator - A comparator for evaluating attributes, for example, equals, greater than, less than, and so on.
    For KeyConditions, only the following comparison operators are supported:
    EQ | LE | LT | GE | GT | BEGINS_WITH | BETWEEN
    The following are descriptions of these comparison operators.
    
    EQ : Equal.
    AttributeValueList can contain only one AttributeValue of type String, Number, or Binary (not a set type). If an item contains an AttributeValue element of a different type than the one specified in the request, the value does not match. For example, {"S":"6"} does not equal {"N":"6"}. Also, {"N":"6"} does not equal {"NS":["6", "2", "1"]}.
    
    LE : Less than or equal.
    AttributeValueList can contain only one AttributeValue element of type String, Number, or Binary (not a set type). If an item contains an AttributeValue element of a different type than the one provided in the request, the value does not match. For example, {"S":"6"} does not equal {"N":"6"}. Also, {"N":"6"} does not compare to {"NS":["6", "2", "1"]}.
    
    LT : Less than.
    AttributeValueList can contain only one AttributeValue of type String, Number, or Binary (not a set type). If an item contains an AttributeValue element of a different type than the one provided in the request, the value does not match. For example, {"S":"6"} does not equal {"N":"6"}. Also, {"N":"6"} does not compare to {"NS":["6", "2", "1"]}.
    
    GE : Greater than or equal.
    AttributeValueList can contain only one AttributeValue element of type String, Number, or Binary (not a set type). If an item contains an AttributeValue element of a different type than the one provided in the request, the value does not match. For example, {"S":"6"} does not equal {"N":"6"}. Also, {"N":"6"} does not compare to {"NS":["6", "2", "1"]}.
    
    GT : Greater than.
    AttributeValueList can contain only one AttributeValue element of type String, Number, or Binary (not a set type). If an item contains an AttributeValue element of a different type than the one provided in the request, the value does not match. For example, {"S":"6"} does not equal {"N":"6"}. Also, {"N":"6"} does not compare to {"NS":["6", "2", "1"]}.
    
    BEGINS_WITH : Checks for a prefix.
    AttributeValueList can contain only one AttributeValue of type String or Binary (not a Number or a set type). The target attribute of the comparison must be of type String or Binary (not a Number or a set type).
    
    BETWEEN : Greater than or equal to the first value, and less than or equal to the second value.
    AttributeValueList must contain two AttributeValue elements of the same type, either String, Number, or Binary (not a set type). A target attribute matches if the target value is greater than, or equal to, the first element and less than, or equal to, the second element. If an item contains an AttributeValue element of a different type than the one provided in the request, the value does not match. For example, {"S":"6"} does not compare to {"N":"6"}. Also, {"N":"6"} does not compare to {"NS":["6", "2", "1"]}
    
    For usage examples of AttributeValueList and ComparisonOperator, see Legacy Conditional Parameters in the Amazon DynamoDB Developer Guide.
    The method adds a new key-value pair into KeyConditions parameter, and returns a reference to this object so that method calls can be chained together.
    Parameters:
    key - The key of the entry to be added into KeyConditions.
    value - The corresponding value of the entry to be added into KeyConditions.
  - clearKeyConditionsEntries
```
public QueryRequest clearKeyConditionsEntries()
```
    Removes all the entries added into KeyConditions.
    Returns a reference to this object so that method calls can be chained together.
  - getQueryFilter
```
public Map<String,Condition> getQueryFilter()
```
    This is a legacy parameter, for backward compatibility. New applications should use FilterExpression instead. Do not combine legacy parameters and expression parameters in a single API call; otherwise, DynamoDB will return a ValidationException exception.
    A condition that evaluates the query results after the items are read and returns only the desired values.
    This parameter does not support attributes of type List or Map.
    A QueryFilter is applied after the items have already been read; the process of filtering does not consume any additional read capacity units.
    If you provide more than one condition in the QueryFilter map, then by default all of the conditions must evaluate to true. In other words, the conditions are ANDed together. (You can use the ConditionalOperator parameter to OR the conditions instead. If you do this, then at least one of the conditions must evaluate to true, rather than all of them.)
    Note that QueryFilter does not allow key attributes. You cannot define a filter condition on a hash key or range key.
    Each QueryFilter element consists of an attribute name to compare, along with the following:
    
    AttributeValueList - One or more values to evaluate against the supplied attribute. The number of values in the list depends on the operator specified in ComparisonOperator.
    For type Number, value comparisons are numeric.
    String value comparisons for greater than, equals, or less than are based on ASCII character code values. For example, a is greater than A, and a is greater than B. For a list of code values, see http://en.wikipedia.org/wiki/ASCII#ASCII_printable_characters.
    For type Binary, DynamoDB treats each byte of the binary data as unsigned when it compares binary values.
    For information on specifying data types in JSON, see JSON Data Format in the Amazon DynamoDB Developer Guide.
    
    ComparisonOperator - A comparator for evaluating attributes. For example, equals, greater than, less than, etc.
    The following comparison operators are available:
    EQ | NE | LE | LT | GE | GT | NOT_NULL | NULL | CONTAINS | NOT_CONTAINS | BEGINS_WITH | IN | BETWEEN
    For complete descriptions of all comparison operators, see the Condition data type.
    Returns:
    This is a legacy parameter, for backward compatibility. New applications should use FilterExpression instead. Do not combine legacy parameters and expression parameters in a single API call; otherwise, DynamoDB will return a ValidationException exception.
    A condition that evaluates the query results after the items are read and returns only the desired values.
    This parameter does not support attributes of type List or Map.
    A QueryFilter is applied after the items have already been read; the process of filtering does not consume any additional read capacity units.
    If you provide more than one condition in the QueryFilter map, then by default all of the conditions must evaluate to true. In other words, the conditions are ANDed together. (You can use the ConditionalOperator parameter to OR the conditions instead. If you do this, then at least one of the conditions must evaluate to true, rather than all of them.)
    Note that QueryFilter does not allow key attributes. You cannot define a filter condition on a hash key or range key.
    Each QueryFilter element consists of an attribute name to compare, along with the following:
    
    AttributeValueList - One or more values to evaluate against the supplied attribute. The number of values in the list depends on the operator specified in ComparisonOperator.
    For type Number, value comparisons are numeric.
    String value comparisons for greater than, equals, or less than are based on ASCII character code values. For example, a is greater than A, and a is greater than B. For a list of code values, see http://en.wikipedia.org/wiki/ASCII#ASCII_printable_characters.
    For type Binary, DynamoDB treats each byte of the binary data as unsigned when it compares binary values.
    For information on specifying data types in JSON, see JSON Data Format in the Amazon DynamoDB Developer Guide.
    
    ComparisonOperator - A comparator for evaluating attributes. For example, equals, greater than, less than, etc.
    The following comparison operators are available:
    EQ | NE | LE | LT | GE | GT | NOT_NULL | NULL | CONTAINS | NOT_CONTAINS | BEGINS_WITH | IN | BETWEEN
    For complete descriptions of all comparison operators, see the Condition data type.
  - setQueryFilter
```
public void setQueryFilter(Map<String,Condition> queryFilter)
```
    This is a legacy parameter, for backward compatibility. New applications should use FilterExpression instead. Do not combine legacy parameters and expression parameters in a single API call; otherwise, DynamoDB will return a ValidationException exception.
    A condition that evaluates the query results after the items are read and returns only the desired values.
    This parameter does not support attributes of type List or Map.
    A QueryFilter is applied after the items have already been read; the process of filtering does not consume any additional read capacity units.
    If you provide more than one condition in the QueryFilter map, then by default all of the conditions must evaluate to true. In other words, the conditions are ANDed together. (You can use the ConditionalOperator parameter to OR the conditions instead. If you do this, then at least one of the conditions must evaluate to true, rather than all of them.)
    Note that QueryFilter does not allow key attributes. You cannot define a filter condition on a hash key or range key.
    Each QueryFilter element consists of an attribute name to compare, along with the following:
    
    AttributeValueList - One or more values to evaluate against the supplied attribute. The number of values in the list depends on the operator specified in ComparisonOperator.
    For type Number, value comparisons are numeric.
    String value comparisons for greater than, equals, or less than are based on ASCII character code values. For example, a is greater than A, and a is greater than B. For a list of code values, see http://en.wikipedia.org/wiki/ASCII#ASCII_printable_characters.
    For type Binary, DynamoDB treats each byte of the binary data as unsigned when it compares binary values.
    For information on specifying data types in JSON, see JSON Data Format in the Amazon DynamoDB Developer Guide.
    
    ComparisonOperator - A comparator for evaluating attributes. For example, equals, greater than, less than, etc.
    The following comparison operators are available:
    EQ | NE | LE | LT | GE | GT | NOT_NULL | NULL | CONTAINS | NOT_CONTAINS | BEGINS_WITH | IN | BETWEEN
    For complete descriptions of all comparison operators, see the Condition data type.
    Parameters:
    queryFilter -
    This is a legacy parameter, for backward compatibility. New applications should use FilterExpression instead. Do not combine legacy parameters and expression parameters in a single API call; otherwise, DynamoDB will return a ValidationException exception.
    A condition that evaluates the query results after the items are read and returns only the desired values.
    This parameter does not support attributes of type List or Map.
    A QueryFilter is applied after the items have already been read; the process of filtering does not consume any additional read capacity units.
    If you provide more than one condition in the QueryFilter map, then by default all of the conditions must evaluate to true. In other words, the conditions are ANDed together. (You can use the ConditionalOperator parameter to OR the conditions instead. If you do this, then at least one of the conditions must evaluate to true, rather than all of them.)
    Note that QueryFilter does not allow key attributes. You cannot define a filter condition on a hash key or range key.
    Each QueryFilter element consists of an attribute name to compare, along with the following:
    
    AttributeValueList - One or more values to evaluate against the supplied attribute. The number of values in the list depends on the operator specified in ComparisonOperator.
    For type Number, value comparisons are numeric.
    String value comparisons for greater than, equals, or less than are based on ASCII character code values. For example, a is greater than A, and a is greater than B. For a list of code values, see http://en.wikipedia.org/wiki/ASCII#ASCII_printable_characters.
    For type Binary, DynamoDB treats each byte of the binary data as unsigned when it compares binary values.
    For information on specifying data types in JSON, see JSON Data Format in the Amazon DynamoDB Developer Guide.
    
    ComparisonOperator - A comparator for evaluating attributes. For example, equals, greater than, less than, etc.
    The following comparison operators are available:
    EQ | NE | LE | LT | GE | GT | NOT_NULL | NULL | CONTAINS | NOT_CONTAINS | BEGINS_WITH | IN | BETWEEN
    For complete descriptions of all comparison operators, see the Condition data type.
  - withQueryFilter
```
public QueryRequest withQueryFilter(Map<String,Condition> queryFilter)
```
    This is a legacy parameter, for backward compatibility. New applications should use FilterExpression instead. Do not combine legacy parameters and expression parameters in a single API call; otherwise, DynamoDB will return a ValidationException exception.
    A condition that evaluates the query results after the items are read and returns only the desired values.
    This parameter does not support attributes of type List or Map.
    A QueryFilter is applied after the items have already been read; the process of filtering does not consume any additional read capacity units.
    If you provide more than one condition in the QueryFilter map, then by default all of the conditions must evaluate to true. In other words, the conditions are ANDed together. (You can use the ConditionalOperator parameter to OR the conditions instead. If you do this, then at least one of the conditions must evaluate to true, rather than all of them.)
    Note that QueryFilter does not allow key attributes. You cannot define a filter condition on a hash key or range key.
    Each QueryFilter element consists of an attribute name to compare, along with the following:
    
    AttributeValueList - One or more values to evaluate against the supplied attribute. The number of values in the list depends on the operator specified in ComparisonOperator.
    For type Number, value comparisons are numeric.
    String value comparisons for greater than, equals, or less than are based on ASCII character code values. For example, a is greater than A, and a is greater than B. For a list of code values, see http://en.wikipedia.org/wiki/ASCII#ASCII_printable_characters.
    For type Binary, DynamoDB treats each byte of the binary data as unsigned when it compares binary values.
    For information on specifying data types in JSON, see JSON Data Format in the Amazon DynamoDB Developer Guide.
    
    ComparisonOperator - A comparator for evaluating attributes. For example, equals, greater than, less than, etc.
    The following comparison operators are available:
    EQ | NE | LE | LT | GE | GT | NOT_NULL | NULL | CONTAINS | NOT_CONTAINS | BEGINS_WITH | IN | BETWEEN
    For complete descriptions of all comparison operators, see the Condition data type.
    
    Returns a reference to this object so that method calls can be chained together.
    Parameters:
    queryFilter -
    This is a legacy parameter, for backward compatibility. New applications should use FilterExpression instead. Do not combine legacy parameters and expression parameters in a single API call; otherwise, DynamoDB will return a ValidationException exception.
    A condition that evaluates the query results after the items are read and returns only the desired values.
    This parameter does not support attributes of type List or Map.
    A QueryFilter is applied after the items have already been read; the process of filtering does not consume any additional read capacity units.
    If you provide more than one condition in the QueryFilter map, then by default all of the conditions must evaluate to true. In other words, the conditions are ANDed together. (You can use the ConditionalOperator parameter to OR the conditions instead. If you do this, then at least one of the conditions must evaluate to true, rather than all of them.)
    Note that QueryFilter does not allow key attributes. You cannot define a filter condition on a hash key or range key.
    Each QueryFilter element consists of an attribute name to compare, along with the following:
    
    AttributeValueList - One or more values to evaluate against the supplied attribute. The number of values in the list depends on the operator specified in ComparisonOperator.
    For type Number, value comparisons are numeric.
    String value comparisons for greater than, equals, or less than are based on ASCII character code values. For example, a is greater than A, and a is greater than B. For a list of code values, see http://en.wikipedia.org/wiki/ASCII#ASCII_printable_characters.
    For type Binary, DynamoDB treats each byte of the binary data as unsigned when it compares binary values.
    For information on specifying data types in JSON, see JSON Data Format in the Amazon DynamoDB Developer Guide.
    
    ComparisonOperator - A comparator for evaluating attributes. For example, equals, greater than, less than, etc.
    The following comparison operators are available:
    EQ | NE | LE | LT | GE | GT | NOT_NULL | NULL | CONTAINS | NOT_CONTAINS | BEGINS_WITH | IN | BETWEEN
    For complete descriptions of all comparison operators, see the Condition data type.
    Returns:
    A reference to this updated object so that method calls can be chained together.
  - addQueryFilterEntry
```
public QueryRequest addQueryFilterEntry(String key,
                               Condition value)
```
    This is a legacy parameter, for backward compatibility. New applications should use FilterExpression instead. Do not combine legacy parameters and expression parameters in a single API call; otherwise, DynamoDB will return a ValidationException exception.
    A condition that evaluates the query results after the items are read and returns only the desired values.
    This parameter does not support attributes of type List or Map.
    A QueryFilter is applied after the items have already been read; the process of filtering does not consume any additional read capacity units.
    If you provide more than one condition in the QueryFilter map, then by default all of the conditions must evaluate to true. In other words, the conditions are ANDed together. (You can use the ConditionalOperator parameter to OR the conditions instead. If you do this, then at least one of the conditions must evaluate to true, rather than all of them.)
    Note that QueryFilter does not allow key attributes. You cannot define a filter condition on a hash key or range key.
    Each QueryFilter element consists of an attribute name to compare, along with the following:
    
    AttributeValueList - One or more values to evaluate against the supplied attribute. The number of values in the list depends on the operator specified in ComparisonOperator.
    For type Number, value comparisons are numeric.
    String value comparisons for greater than, equals, or less than are based on ASCII character code values. For example, a is greater than A, and a is greater than B. For a list of code values, see http://en.wikipedia.org/wiki/ASCII#ASCII_printable_characters.
    For type Binary, DynamoDB treats each byte of the binary data as unsigned when it compares binary values.
    For information on specifying data types in JSON, see JSON Data Format in the Amazon DynamoDB Developer Guide.
    
    ComparisonOperator - A comparator for evaluating attributes. For example, equals, greater than, less than, etc.
    The following comparison operators are available:
    EQ | NE | LE | LT | GE | GT | NOT_NULL | NULL | CONTAINS | NOT_CONTAINS | BEGINS_WITH | IN | BETWEEN
    For complete descriptions of all comparison operators, see the Condition data type.
    
    The method adds a new key-value pair into QueryFilter parameter, and returns a reference to this object so that method calls can be chained together.
    Parameters:
    key - The key of the entry to be added into QueryFilter.
    value - The corresponding value of the entry to be added into QueryFilter.
  - clearQueryFilterEntries
```
public QueryRequest clearQueryFilterEntries()
```
    Removes all the entries added into QueryFilter.
    Returns a reference to this object so that method calls can be chained together.
  - getConditionalOperator
```
public String getConditionalOperator()
```
    This is a legacy parameter, for backward compatibility. New applications should use FilterExpression instead. Do not combine legacy parameters and expression parameters in a single API call; otherwise, DynamoDB will return a ValidationException exception.
    A logical operator to apply to the conditions in a QueryFilter map:
    
    AND - If all of the conditions evaluate to true, then the entire map evaluates to true.
    
    OR - If at least one of the conditions evaluate to true, then the entire map evaluates to true.
    
    If you omit ConditionalOperator, then AND is the default.
    The operation will succeed only if the entire map evaluates to true.
    This parameter does not support attributes of type List or Map.
    Constraints:
    Allowed Values: AND, OR
    Returns:
    This is a legacy parameter, for backward compatibility. New applications should use FilterExpression instead. Do not combine legacy parameters and expression parameters in a single API call; otherwise, DynamoDB will return a ValidationException exception.
    A logical operator to apply to the conditions in a QueryFilter map:
    
    AND - If all of the conditions evaluate to true, then the entire map evaluates to true.
    
    OR - If at least one of the conditions evaluate to true, then the entire map evaluates to true.
    
    If you omit ConditionalOperator, then AND is the default.
    The operation will succeed only if the entire map evaluates to true.
    This parameter does not support attributes of type List or Map.
    See Also:
    ConditionalOperator
  - setConditionalOperator
```
public void setConditionalOperator(String conditionalOperator)
```
    This is a legacy parameter, for backward compatibility. New applications should use FilterExpression instead. Do not combine legacy parameters and expression parameters in a single API call; otherwise, DynamoDB will return a ValidationException exception.
    A logical operator to apply to the conditions in a QueryFilter map:
    
    AND - If all of the conditions evaluate to true, then the entire map evaluates to true.
    
    OR - If at least one of the conditions evaluate to true, then the entire map evaluates to true.
    
    If you omit ConditionalOperator, then AND is the default.
    The operation will succeed only if the entire map evaluates to true.
    This parameter does not support attributes of type List or Map.
    Constraints:
    Allowed Values: AND, OR
    Parameters:
    conditionalOperator -
    This is a legacy parameter, for backward compatibility. New applications should use FilterExpression instead. Do not combine legacy parameters and expression parameters in a single API call; otherwise, DynamoDB will return a ValidationException exception.
    A logical operator to apply to the conditions in a QueryFilter map:
    
    AND - If all of the conditions evaluate to true, then the entire map evaluates to true.
    
    OR - If at least one of the conditions evaluate to true, then the entire map evaluates to true.
    
    If you omit ConditionalOperator, then AND is the default.
    The operation will succeed only if the entire map evaluates to true.
    This parameter does not support attributes of type List or Map.
    See Also:
    ConditionalOperator
  - withConditionalOperator
```
public QueryRequest withConditionalOperator(String conditionalOperator)
```
    This is a legacy parameter, for backward compatibility. New applications should use FilterExpression instead. Do not combine legacy parameters and expression parameters in a single API call; otherwise, DynamoDB will return a ValidationException exception.
    A logical operator to apply to the conditions in a QueryFilter map:
    
    AND - If all of the conditions evaluate to true, then the entire map evaluates to true.
    
    OR - If at least one of the conditions evaluate to true, then the entire map evaluates to true.
    
    If you omit ConditionalOperator, then AND is the default.
    The operation will succeed only if the entire map evaluates to true.
    This parameter does not support attributes of type List or Map.
    Returns a reference to this object so that method calls can be chained together.
    Constraints:
    Allowed Values: AND, OR
    Parameters:
    conditionalOperator -
    This is a legacy parameter, for backward compatibility. New applications should use FilterExpression instead. Do not combine legacy parameters and expression parameters in a single API call; otherwise, DynamoDB will return a ValidationException exception.
    A logical operator to apply to the conditions in a QueryFilter map:
    
    AND - If all of the conditions evaluate to true, then the entire map evaluates to true.
    
    OR - If at least one of the conditions evaluate to true, then the entire map evaluates to true.
    
    If you omit ConditionalOperator, then AND is the default.
    The operation will succeed only if the entire map evaluates to true.
    This parameter does not support attributes of type List or Map.
    Returns:
    A reference to this updated object so that method calls can be chained together.
    See Also:
    ConditionalOperator
  - setConditionalOperator
```
public void setConditionalOperator(ConditionalOperator conditionalOperator)
```
    This is a legacy parameter, for backward compatibility. New applications should use FilterExpression instead. Do not combine legacy parameters and expression parameters in a single API call; otherwise, DynamoDB will return a ValidationException exception.
    A logical operator to apply to the conditions in a QueryFilter map:
    
    AND - If all of the conditions evaluate to true, then the entire map evaluates to true.
    
    OR - If at least one of the conditions evaluate to true, then the entire map evaluates to true.
    
    If you omit ConditionalOperator, then AND is the default.
    The operation will succeed only if the entire map evaluates to true.
    This parameter does not support attributes of type List or Map.
    Constraints:
    Allowed Values: AND, OR
    Parameters:
    conditionalOperator -
    This is a legacy parameter, for backward compatibility. New applications should use FilterExpression instead. Do not combine legacy parameters and expression parameters in a single API call; otherwise, DynamoDB will return a ValidationException exception.
    A logical operator to apply to the conditions in a QueryFilter map:
    
    AND - If all of the conditions evaluate to true, then the entire map evaluates to true.
    
    OR - If at least one of the conditions evaluate to true, then the entire map evaluates to true.
    
    If you omit ConditionalOperator, then AND is the default.
    The operation will succeed only if the entire map evaluates to true.
    This parameter does not support attributes of type List or Map.
    See Also:
    ConditionalOperator
  - withConditionalOperator
```
public QueryRequest withConditionalOperator(ConditionalOperator conditionalOperator)
```
    This is a legacy parameter, for backward compatibility. New applications should use FilterExpression instead. Do not combine legacy parameters and expression parameters in a single API call; otherwise, DynamoDB will return a ValidationException exception.
    A logical operator to apply to the conditions in a QueryFilter map:
    
    AND - If all of the conditions evaluate to true, then the entire map evaluates to true.
    
    OR - If at least one of the conditions evaluate to true, then the entire map evaluates to true.
    
    If you omit ConditionalOperator, then AND is the default.
    The operation will succeed only if the entire map evaluates to true.
    This parameter does not support attributes of type List or Map.
    Returns a reference to this object so that method calls can be chained together.
    Constraints:
    Allowed Values: AND, OR
    Parameters:
    conditionalOperator -
    This is a legacy parameter, for backward compatibility. New applications should use FilterExpression instead. Do not combine legacy parameters and expression parameters in a single API call; otherwise, DynamoDB will return a ValidationException exception.
    A logical operator to apply to the conditions in a QueryFilter map:
    
    AND - If all of the conditions evaluate to true, then the entire map evaluates to true.
    
    OR - If at least one of the conditions evaluate to true, then the entire map evaluates to true.
    
    If you omit ConditionalOperator, then AND is the default.
    The operation will succeed only if the entire map evaluates to true.
    This parameter does not support attributes of type List or Map.
    Returns:
    A reference to this updated object so that method calls can be chained together.
    See Also:
    ConditionalOperator
  - isScanIndexForward
```
public Boolean isScanIndexForward()
```
    A value that specifies ascending (true) or descending (false) traversal of the index. DynamoDB returns results reflecting the requested order determined by the range key. If the data type is Number, the results are returned in numeric order. For type String, the results are returned in order of ASCII character code values. For type Binary, DynamoDB treats each byte of the binary data as unsigned when it compares binary values.
    If ScanIndexForward is not specified, the results are returned in ascending order.
    
    Returns:
    A value that specifies ascending (true) or descending (false) traversal of the index. DynamoDB returns results reflecting the requested order determined by the range key. If the data type is Number, the results are returned in numeric order. For type String, the results are returned in order of ASCII character code values. For type Binary, DynamoDB treats each byte of the binary data as unsigned when it compares binary values.
    If ScanIndexForward is not specified, the results are returned in ascending order.
  - setScanIndexForward
```
public void setScanIndexForward(Boolean scanIndexForward)
```
    A value that specifies ascending (true) or descending (false) traversal of the index. DynamoDB returns results reflecting the requested order determined by the range key. If the data type is Number, the results are returned in numeric order. For type String, the results are returned in order of ASCII character code values. For type Binary, DynamoDB treats each byte of the binary data as unsigned when it compares binary values.
    If ScanIndexForward is not specified, the results are returned in ascending order.
    
    Parameters:
    scanIndexForward - A value that specifies ascending (true) or descending (false) traversal of the index. DynamoDB returns results reflecting the requested order determined by the range key. If the data type is Number, the results are returned in numeric order. For type String, the results are returned in order of ASCII character code values. For type Binary, DynamoDB treats each byte of the binary data as unsigned when it compares binary values.
    If ScanIndexForward is not specified, the results are returned in ascending order.
  - withScanIndexForward
```
public QueryRequest withScanIndexForward(Boolean scanIndexForward)
```
    A value that specifies ascending (true) or descending (false) traversal of the index. DynamoDB returns results reflecting the requested order determined by the range key. If the data type is Number, the results are returned in numeric order. For type String, the results are returned in order of ASCII character code values. For type Binary, DynamoDB treats each byte of the binary data as unsigned when it compares binary values.
    If ScanIndexForward is not specified, the results are returned in ascending order.
    Returns a reference to this object so that method calls can be chained together.
    
    Parameters:
    scanIndexForward - A value that specifies ascending (true) or descending (false) traversal of the index. DynamoDB returns results reflecting the requested order determined by the range key. If the data type is Number, the results are returned in numeric order. For type String, the results are returned in order of ASCII character code values. For type Binary, DynamoDB treats each byte of the binary data as unsigned when it compares binary values.
    If ScanIndexForward is not specified, the results are returned in ascending order.
    
    Returns:
    A reference to this updated object so that method calls can be chained together.
  - getScanIndexForward
```
public Boolean getScanIndexForward()
```
    A value that specifies ascending (true) or descending (false) traversal of the index. DynamoDB returns results reflecting the requested order determined by the range key. If the data type is Number, the results are returned in numeric order. For type String, the results are returned in order of ASCII character code values. For type Binary, DynamoDB treats each byte of the binary data as unsigned when it compares binary values.
    If ScanIndexForward is not specified, the results are returned in ascending order.
    
    Returns:
    A value that specifies ascending (true) or descending (false) traversal of the index. DynamoDB returns results reflecting the requested order determined by the range key. If the data type is Number, the results are returned in numeric order. For type String, the results are returned in order of ASCII character code values. For type Binary, DynamoDB treats each byte of the binary data as unsigned when it compares binary values.
    If ScanIndexForward is not specified, the results are returned in ascending order.
  - getExclusiveStartKey
```
public Map<String,AttributeValue> getExclusiveStartKey()
```
    The primary key of the first item that this operation will evaluate. Use the value that was returned for LastEvaluatedKey in the previous operation.
    The data type for ExclusiveStartKey must be String, Number or Binary. No set data types are allowed.
    
    Returns:
    The primary key of the first item that this operation will evaluate. Use the value that was returned for LastEvaluatedKey in the previous operation.
    The data type for ExclusiveStartKey must be String, Number or Binary. No set data types are allowed.
  - setExclusiveStartKey
```
public void setExclusiveStartKey(Map<String,AttributeValue> exclusiveStartKey)
```
    The primary key of the first item that this operation will evaluate. Use the value that was returned for LastEvaluatedKey in the previous operation.
    The data type for ExclusiveStartKey must be String, Number or Binary. No set data types are allowed.
    
    Parameters:
    exclusiveStartKey - The primary key of the first item that this operation will evaluate. Use the value that was returned for LastEvaluatedKey in the previous operation.
    The data type for ExclusiveStartKey must be String, Number or Binary. No set data types are allowed.
  - withExclusiveStartKey
```
public QueryRequest withExclusiveStartKey(Map<String,AttributeValue> exclusiveStartKey)
```
    The primary key of the first item that this operation will evaluate. Use the value that was returned for LastEvaluatedKey in the previous operation.
    The data type for ExclusiveStartKey must be String, Number or Binary. No set data types are allowed.
    Returns a reference to this object so that method calls can be chained together.
    
    Parameters:
    exclusiveStartKey - The primary key of the first item that this operation will evaluate. Use the value that was returned for LastEvaluatedKey in the previous operation.
    The data type for ExclusiveStartKey must be String, Number or Binary. No set data types are allowed.
    
    Returns:
    A reference to this updated object so that method calls can be chained together.
  - setExclusiveStartKey
```
public void setExclusiveStartKey(Map.Entry<String,AttributeValue> hashKey,
                        Map.Entry<String,AttributeValue> rangeKey)
                          throws IllegalArgumentException
```
    The primary key of the first item that this operation will evaluate. Use the value that was returned for LastEvaluatedKey in the previous operation.
    The data type for ExclusiveStartKey must be String, Number or Binary. No set data types are allowed.
    This method accepts the hashKey, rangeKey of ExclusiveStartKey as java.util.Map.Entry objects.
    
    Parameters:
    hashKey - Primary hash key.
    rangeKey - Primary range key. (null if it a hash-only table)
    
    Throws:
    
    IllegalArgumentException
  - withExclusiveStartKey
```
public QueryRequest withExclusiveStartKey(Map.Entry<String,AttributeValue> hashKey,
                                 Map.Entry<String,AttributeValue> rangeKey)
                                   throws IllegalArgumentException
```
    The primary key of the first item that this operation will evaluate. Use the value that was returned for LastEvaluatedKey in the previous operation.
    The data type for ExclusiveStartKey must be String, Number or Binary. No set data types are allowed.
    This method accepts the hashKey, rangeKey of ExclusiveStartKey as java.util.Map.Entry objects.
    Returns a reference to this object so that method calls can be chained together.
    
    Parameters:
    hashKey - Primary hash key.
    rangeKey - Primary range key. (null if it a hash-only table)
    
    Throws:
    
    IllegalArgumentException
  - addExclusiveStartKeyEntry
```
public QueryRequest addExclusiveStartKeyEntry(String key,
                                     AttributeValue value)
```
    The primary key of the first item that this operation will evaluate. Use the value that was returned for LastEvaluatedKey in the previous operation.
    The data type for ExclusiveStartKey must be String, Number or Binary. No set data types are allowed.
    The method adds a new key-value pair into ExclusiveStartKey parameter, and returns a reference to this object so that method calls can be chained together.
    
    Parameters:
    key - The key of the entry to be added into ExclusiveStartKey.
    value - The corresponding value of the entry to be added into ExclusiveStartKey.
  - clearExclusiveStartKeyEntries
```
public QueryRequest clearExclusiveStartKeyEntries()
```
    Removes all the entries added into ExclusiveStartKey.
    Returns a reference to this object so that method calls can be chained together.
  - getReturnConsumedCapacity
```
public String getReturnConsumedCapacity()
```
    A value that if set to TOTAL, the response includes ConsumedCapacity data for tables and indexes. If set to INDEXES, the response includes ConsumedCapacity for indexes. If set to NONE (the default), ConsumedCapacity is not included in the response.
    Constraints:
    Allowed Values: INDEXES, TOTAL, NONE
    
    Returns:
    A value that if set to TOTAL, the response includes ConsumedCapacity data for tables and indexes. If set to INDEXES, the response includes ConsumedCapacity for indexes. If set to NONE (the default), ConsumedCapacity is not included in the response.
    See Also:
    ReturnConsumedCapacity
  - setReturnConsumedCapacity
```
public void setReturnConsumedCapacity(String returnConsumedCapacity)
```
    A value that if set to TOTAL, the response includes ConsumedCapacity data for tables and indexes. If set to INDEXES, the response includes ConsumedCapacity for indexes. If set to NONE (the default), ConsumedCapacity is not included in the response.
    Constraints:
    Allowed Values: INDEXES, TOTAL, NONE
    
    Parameters:
    returnConsumedCapacity - A value that if set to TOTAL, the response includes ConsumedCapacity data for tables and indexes. If set to INDEXES, the response includes ConsumedCapacity for indexes. If set to NONE (the default), ConsumedCapacity is not included in the response.
    See Also:
    ReturnConsumedCapacity
  - withReturnConsumedCapacity
```
public QueryRequest withReturnConsumedCapacity(String returnConsumedCapacity)
```
    A value that if set to TOTAL, the response includes ConsumedCapacity data for tables and indexes. If set to INDEXES, the response includes ConsumedCapacity for indexes. If set to NONE (the default), ConsumedCapacity is not included in the response.
    Returns a reference to this object so that method calls can be chained together.
    Constraints:
    Allowed Values: INDEXES, TOTAL, NONE
    
    Parameters:
    returnConsumedCapacity - A value that if set to TOTAL, the response includes ConsumedCapacity data for tables and indexes. If set to INDEXES, the response includes ConsumedCapacity for indexes. If set to NONE (the default), ConsumedCapacity is not included in the response.
    
    Returns:
    A reference to this updated object so that method calls can be chained together.
    See Also:
    ReturnConsumedCapacity
  - setReturnConsumedCapacity
```
public void setReturnConsumedCapacity(ReturnConsumedCapacity returnConsumedCapacity)
```
    A value that if set to TOTAL, the response includes ConsumedCapacity data for tables and indexes. If set to INDEXES, the response includes ConsumedCapacity for indexes. If set to NONE (the default), ConsumedCapacity is not included in the response.
    Constraints:
    Allowed Values: INDEXES, TOTAL, NONE
    
    Parameters:
    returnConsumedCapacity - A value that if set to TOTAL, the response includes ConsumedCapacity data for tables and indexes. If set to INDEXES, the response includes ConsumedCapacity for indexes. If set to NONE (the default), ConsumedCapacity is not included in the response.
    See Also:
    ReturnConsumedCapacity
  - withReturnConsumedCapacity
```
public QueryRequest withReturnConsumedCapacity(ReturnConsumedCapacity returnConsumedCapacity)
```
    A value that if set to TOTAL, the response includes ConsumedCapacity data for tables and indexes. If set to INDEXES, the response includes ConsumedCapacity for indexes. If set to NONE (the default), ConsumedCapacity is not included in the response.
    Returns a reference to this object so that method calls can be chained together.
    Constraints:
    Allowed Values: INDEXES, TOTAL, NONE
    
    Parameters:
    returnConsumedCapacity - A value that if set to TOTAL, the response includes ConsumedCapacity data for tables and indexes. If set to INDEXES, the response includes ConsumedCapacity for indexes. If set to NONE (the default), ConsumedCapacity is not included in the response.
    
    Returns:
    A reference to this updated object so that method calls can be chained together.
    See Also:
    ReturnConsumedCapacity
  - getProjectionExpression
```
public String getProjectionExpression()
```
    A string that identifies one or more attributes to retrieve from the table. These attributes can include scalars, sets, or elements of a JSON document. The attributes in the expression must be separated by commas.
    If no attribute names are specified, then all attributes will be returned. If any of the requested attributes are not found, they will not appear in the result.
    For more information, see Accessing Item Attributes in the Amazon DynamoDB Developer Guide.
    ProjectionExpression replaces the legacy AttributesToGet parameter.
    
    Returns:
    A string that identifies one or more attributes to retrieve from the table. These attributes can include scalars, sets, or elements of a JSON document. The attributes in the expression must be separated by commas.
    If no attribute names are specified, then all attributes will be returned. If any of the requested attributes are not found, they will not appear in the result.
    For more information, see Accessing Item Attributes in the Amazon DynamoDB Developer Guide.
    ProjectionExpression replaces the legacy AttributesToGet parameter.
  - setProjectionExpression
```
public void setProjectionExpression(String projectionExpression)
```
    A string that identifies one or more attributes to retrieve from the table. These attributes can include scalars, sets, or elements of a JSON document. The attributes in the expression must be separated by commas.
    If no attribute names are specified, then all attributes will be returned. If any of the requested attributes are not found, they will not appear in the result.
    For more information, see Accessing Item Attributes in the Amazon DynamoDB Developer Guide.
    ProjectionExpression replaces the legacy AttributesToGet parameter.
    
    Parameters:
    projectionExpression - A string that identifies one or more attributes to retrieve from the table. These attributes can include scalars, sets, or elements of a JSON document. The attributes in the expression must be separated by commas.
    If no attribute names are specified, then all attributes will be returned. If any of the requested attributes are not found, they will not appear in the result.
    For more information, see Accessing Item Attributes in the Amazon DynamoDB Developer Guide.
    ProjectionExpression replaces the legacy AttributesToGet parameter.
  - withProjectionExpression
```
public QueryRequest withProjectionExpression(String projectionExpression)
```
    A string that identifies one or more attributes to retrieve from the table. These attributes can include scalars, sets, or elements of a JSON document. The attributes in the expression must be separated by commas.
    If no attribute names are specified, then all attributes will be returned. If any of the requested attributes are not found, they will not appear in the result.
    For more information, see Accessing Item Attributes in the Amazon DynamoDB Developer Guide.
    ProjectionExpression replaces the legacy AttributesToGet parameter.
    Returns a reference to this object so that method calls can be chained together.
    
    Parameters:
    projectionExpression - A string that identifies one or more attributes to retrieve from the table. These attributes can include scalars, sets, or elements of a JSON document. The attributes in the expression must be separated by commas.
    If no attribute names are specified, then all attributes will be returned. If any of the requested attributes are not found, they will not appear in the result.
    For more information, see Accessing Item Attributes in the Amazon DynamoDB Developer Guide.
    ProjectionExpression replaces the legacy AttributesToGet parameter.
    
    Returns:
    A reference to this updated object so that method calls can be chained together.
  - getFilterExpression
```
public String getFilterExpression()
```
    A string that contains conditions that DynamoDB applies after the Query operation, but before the data is returned to you. Items that do not satisfy the FilterExpression criteria are not returned.
    A FilterExpression is applied after the items have already been read; the process of filtering does not consume any additional read capacity units.
    For more information, see Filter Expressions in the Amazon DynamoDB Developer Guide.
    FilterExpression replaces the legacy QueryFilter and ConditionalOperator parameters.
    
    Returns:
    A string that contains conditions that DynamoDB applies after the Query operation, but before the data is returned to you. Items that do not satisfy the FilterExpression criteria are not returned.
    A FilterExpression is applied after the items have already been read; the process of filtering does not consume any additional read capacity units.
    For more information, see Filter Expressions in the Amazon DynamoDB Developer Guide.
    FilterExpression replaces the legacy QueryFilter and ConditionalOperator parameters.
  - setFilterExpression
```
public void setFilterExpression(String filterExpression)
```
    A string that contains conditions that DynamoDB applies after the Query operation, but before the data is returned to you. Items that do not satisfy the FilterExpression criteria are not returned.
    A FilterExpression is applied after the items have already been read; the process of filtering does not consume any additional read capacity units.
    For more information, see Filter Expressions in the Amazon DynamoDB Developer Guide.
    FilterExpression replaces the legacy QueryFilter and ConditionalOperator parameters.
    
    Parameters:
    filterExpression - A string that contains conditions that DynamoDB applies after the Query operation, but before the data is returned to you. Items that do not satisfy the FilterExpression criteria are not returned.
    A FilterExpression is applied after the items have already been read; the process of filtering does not consume any additional read capacity units.
    For more information, see Filter Expressions in the Amazon DynamoDB Developer Guide.
    FilterExpression replaces the legacy QueryFilter and ConditionalOperator parameters.
  - withFilterExpression
```
public QueryRequest withFilterExpression(String filterExpression)
```
    A string that contains conditions that DynamoDB applies after the Query operation, but before the data is returned to you. Items that do not satisfy the FilterExpression criteria are not returned.
    A FilterExpression is applied after the items have already been read; the process of filtering does not consume any additional read capacity units.
    For more information, see Filter Expressions in the Amazon DynamoDB Developer Guide.
    FilterExpression replaces the legacy QueryFilter and ConditionalOperator parameters.
    Returns a reference to this object so that method calls can be chained together.
    
    Parameters:
    filterExpression - A string that contains conditions that DynamoDB applies after the Query operation, but before the data is returned to you. Items that do not satisfy the FilterExpression criteria are not returned.
    A FilterExpression is applied after the items have already been read; the process of filtering does not consume any additional read capacity units.
    For more information, see Filter Expressions in the Amazon DynamoDB Developer Guide.
    FilterExpression replaces the legacy QueryFilter and ConditionalOperator parameters.
    
    Returns:
    A reference to this updated object so that method calls can be chained together.
  - getKeyConditionExpression
```
public String getKeyConditionExpression()
```
    The condition that specifies the key value(s) for items to be retrieved by the Query action.
    The condition must perform an equality test on a single hash key value. The condition can also perform one of several comparison tests on a single range key value. Query can use KeyConditionExpression to retrieve one item with a given hash and range key value, or several items that have the same hash key value but different range key values.
    The hash key equality test is required, and must be specified in the following format:
    hashAttributeName = :hashval
    If you also want to provide a range key condition, it must be combined using AND with the hash key condition. Following is an example, using the = comparison operator for the range key:
    hashAttributeName = :hashval AND rangeAttributeName = :rangeval
    Valid comparisons for the range key condition are as follows:
    - rangeAttributeName = :rangeval - true if the range key is equal to :rangeval.
    - rangeAttributeName < :rangeval - true if the range key is less than :rangeval.
    - rangeAttributeName <= :rangeval - true if the range key is less than or equal to :rangeval.
    - rangeAttributeName > :rangeval - true if the range key is greater than :rangeval.
    - rangeAttributeName >= :rangeval - true if the range key is greater than or equal to :rangeval.
    - rangeAttributeName BETWEEN :rangeval1 AND :rangeval2 - true if the range key is greater than or equal to :rangeval1, and less than or equal to :rangeval2.
    - begins_with (rangeAttributeName, :rangeval) - true if the range key begins with a particular operand. (You cannot use this function with a range key that is of type Number.) Note that the function name begins_with is case-sensitive.
    Use the ExpressionAttributeValues parameter to replace tokens such as :hashval and :rangeval with actual values at runtime.
    You can optionally use the ExpressionAttributeNames parameter to replace the names of the hash and range attributes with placeholder tokens. This option might be necessary if an attribute name conflicts with a DynamoDB reserved word. For example, the following KeyConditionExpression parameter causes an error because Size is a reserved word:
    - Size = :myval
    To work around this, define a placeholder (such a #S) to represent the attribute name Size. KeyConditionExpression then is as follows:
    - #S = :myval
    For a list of reserved words, see Reserved Words in the Amazon DynamoDB Developer Guide.
    For more information on ExpressionAttributeNames and ExpressionAttributeValues, see Using Placeholders for Attribute Names and Values in the Amazon DynamoDB Developer Guide.
    KeyConditionExpression replaces the legacy KeyConditions parameter.
    Returns:
    The condition that specifies the key value(s) for items to be retrieved by the Query action.
    The condition must perform an equality test on a single hash key value. The condition can also perform one of several comparison tests on a single range key value. Query can use KeyConditionExpression to retrieve one item with a given hash and range key value, or several items that have the same hash key value but different range key values.
    The hash key equality test is required, and must be specified in the following format:
    hashAttributeName = :hashval
    If you also want to provide a range key condition, it must be combined using AND with the hash key condition. Following is an example, using the = comparison operator for the range key:
    hashAttributeName = :hashval AND rangeAttributeName = :rangeval
    Valid comparisons for the range key condition are as follows:
    
    rangeAttributeName = :rangeval - true if the range key is equal to :rangeval.
    
    rangeAttributeName < :rangeval - true if the range key is less than :rangeval.
    
    rangeAttributeName <= :rangeval - true if the range key is less than or equal to :rangeval.
    
    rangeAttributeName > :rangeval - true if the range key is greater than :rangeval.
    
    rangeAttributeName >= :rangeval - true if the range key is greater than or equal to :rangeval.
    
    rangeAttributeName BETWEEN :rangeval1 AND :rangeval2 - true if the range key is greater than or equal to :rangeval1, and less than or equal to :rangeval2.
    
    begins_with (rangeAttributeName, :rangeval) - true if the range key begins with a particular operand. (You cannot use this function with a range key that is of type Number.) Note that the function name begins_with is case-sensitive.
    
    Use the ExpressionAttributeValues parameter to replace tokens such as :hashval and :rangeval with actual values at runtime.
    You can optionally use the ExpressionAttributeNames parameter to replace the names of the hash and range attributes with placeholder tokens. This option might be necessary if an attribute name conflicts with a DynamoDB reserved word. For example, the following KeyConditionExpression parameter causes an error because Size is a reserved word:
    
    Size = :myval
    
    To work around this, define a placeholder (such a #S) to represent the attribute name Size. KeyConditionExpression then is as follows:
    
    #S = :myval
    
    For a list of reserved words, see Reserved Words in the Amazon DynamoDB Developer Guide.
    For more information on ExpressionAttributeNames and ExpressionAttributeValues, see Using Placeholders for Attribute Names and Values in the Amazon DynamoDB Developer Guide.
    KeyConditionExpression replaces the legacy KeyConditions parameter.
  - setKeyConditionExpression
```
public void setKeyConditionExpression(String keyConditionExpression)
```
    The condition that specifies the key value(s) for items to be retrieved by the Query action.
    The condition must perform an equality test on a single hash key value. The condition can also perform one of several comparison tests on a single range key value. Query can use KeyConditionExpression to retrieve one item with a given hash and range key value, or several items that have the same hash key value but different range key values.
    The hash key equality test is required, and must be specified in the following format:
    hashAttributeName = :hashval
    If you also want to provide a range key condition, it must be combined using AND with the hash key condition. Following is an example, using the = comparison operator for the range key:
    hashAttributeName = :hashval AND rangeAttributeName = :rangeval
    Valid comparisons for the range key condition are as follows:
    - rangeAttributeName = :rangeval - true if the range key is equal to :rangeval.
    - rangeAttributeName < :rangeval - true if the range key is less than :rangeval.
    - rangeAttributeName <= :rangeval - true if the range key is less than or equal to :rangeval.
    - rangeAttributeName > :rangeval - true if the range key is greater than :rangeval.
    - rangeAttributeName >= :rangeval - true if the range key is greater than or equal to :rangeval.
    - rangeAttributeName BETWEEN :rangeval1 AND :rangeval2 - true if the range key is greater than or equal to :rangeval1, and less than or equal to :rangeval2.
    - begins_with (rangeAttributeName, :rangeval) - true if the range key begins with a particular operand. (You cannot use this function with a range key that is of type Number.) Note that the function name begins_with is case-sensitive.
    Use the ExpressionAttributeValues parameter to replace tokens such as :hashval and :rangeval with actual values at runtime.
    You can optionally use the ExpressionAttributeNames parameter to replace the names of the hash and range attributes with placeholder tokens. This option might be necessary if an attribute name conflicts with a DynamoDB reserved word. For example, the following KeyConditionExpression parameter causes an error because Size is a reserved word:
    - Size = :myval
    To work around this, define a placeholder (such a #S) to represent the attribute name Size. KeyConditionExpression then is as follows:
    - #S = :myval
    For a list of reserved words, see Reserved Words in the Amazon DynamoDB Developer Guide.
    For more information on ExpressionAttributeNames and ExpressionAttributeValues, see Using Placeholders for Attribute Names and Values in the Amazon DynamoDB Developer Guide.
    KeyConditionExpression replaces the legacy KeyConditions parameter.
    Parameters:
    keyConditionExpression - The condition that specifies the key value(s) for items to be retrieved by the Query action.
    The condition must perform an equality test on a single hash key value. The condition can also perform one of several comparison tests on a single range key value. Query can use KeyConditionExpression to retrieve one item with a given hash and range key value, or several items that have the same hash key value but different range key values.
    The hash key equality test is required, and must be specified in the following format:
    hashAttributeName = :hashval
    If you also want to provide a range key condition, it must be combined using AND with the hash key condition. Following is an example, using the = comparison operator for the range key:
    hashAttributeName = :hashval AND rangeAttributeName = :rangeval
    Valid comparisons for the range key condition are as follows:
    
    rangeAttributeName = :rangeval - true if the range key is equal to :rangeval.
    
    rangeAttributeName < :rangeval - true if the range key is less than :rangeval.
    
    rangeAttributeName <= :rangeval - true if the range key is less than or equal to :rangeval.
    
    rangeAttributeName > :rangeval - true if the range key is greater than :rangeval.
    
    rangeAttributeName >= :rangeval - true if the range key is greater than or equal to :rangeval.
    
    rangeAttributeName BETWEEN :rangeval1 AND :rangeval2 - true if the range key is greater than or equal to :rangeval1, and less than or equal to :rangeval2.
    
    begins_with (rangeAttributeName, :rangeval) - true if the range key begins with a particular operand. (You cannot use this function with a range key that is of type Number.) Note that the function name begins_with is case-sensitive.
    
    Use the ExpressionAttributeValues parameter to replace tokens such as :hashval and :rangeval with actual values at runtime.
    You can optionally use the ExpressionAttributeNames parameter to replace the names of the hash and range attributes with placeholder tokens. This option might be necessary if an attribute name conflicts with a DynamoDB reserved word. For example, the following KeyConditionExpression parameter causes an error because Size is a reserved word:
    
    Size = :myval
    
    To work around this, define a placeholder (such a #S) to represent the attribute name Size. KeyConditionExpression then is as follows:
    
    #S = :myval
    
    For a list of reserved words, see Reserved Words in the Amazon DynamoDB Developer Guide.
    For more information on ExpressionAttributeNames and ExpressionAttributeValues, see Using Placeholders for Attribute Names and Values in the Amazon DynamoDB Developer Guide.
    KeyConditionExpression replaces the legacy KeyConditions parameter.
  - withKeyConditionExpression
```
public QueryRequest withKeyConditionExpression(String keyConditionExpression)
```
    The condition that specifies the key value(s) for items to be retrieved by the Query action.
    The condition must perform an equality test on a single hash key value. The condition can also perform one of several comparison tests on a single range key value. Query can use KeyConditionExpression to retrieve one item with a given hash and range key value, or several items that have the same hash key value but different range key values.
    The hash key equality test is required, and must be specified in the following format:
    hashAttributeName = :hashval
    If you also want to provide a range key condition, it must be combined using AND with the hash key condition. Following is an example, using the = comparison operator for the range key:
    hashAttributeName = :hashval AND rangeAttributeName = :rangeval
    Valid comparisons for the range key condition are as follows:
    - rangeAttributeName = :rangeval - true if the range key is equal to :rangeval.
    - rangeAttributeName < :rangeval - true if the range key is less than :rangeval.
    - rangeAttributeName <= :rangeval - true if the range key is less than or equal to :rangeval.
    - rangeAttributeName > :rangeval - true if the range key is greater than :rangeval.
    - rangeAttributeName >= :rangeval - true if the range key is greater than or equal to :rangeval.
    - rangeAttributeName BETWEEN :rangeval1 AND :rangeval2 - true if the range key is greater than or equal to :rangeval1, and less than or equal to :rangeval2.
    - begins_with (rangeAttributeName, :rangeval) - true if the range key begins with a particular operand. (You cannot use this function with a range key that is of type Number.) Note that the function name begins_with is case-sensitive.
    Use the ExpressionAttributeValues parameter to replace tokens such as :hashval and :rangeval with actual values at runtime.
    You can optionally use the ExpressionAttributeNames parameter to replace the names of the hash and range attributes with placeholder tokens. This option might be necessary if an attribute name conflicts with a DynamoDB reserved word. For example, the following KeyConditionExpression parameter causes an error because Size is a reserved word:
    - Size = :myval
    To work around this, define a placeholder (such a #S) to represent the attribute name Size. KeyConditionExpression then is as follows:
    - #S = :myval
    For a list of reserved words, see Reserved Words in the Amazon DynamoDB Developer Guide.
    For more information on ExpressionAttributeNames and ExpressionAttributeValues, see Using Placeholders for Attribute Names and Values in the Amazon DynamoDB Developer Guide.
    KeyConditionExpression replaces the legacy KeyConditions parameter.
    Returns a reference to this object so that method calls can be chained together.
    Parameters:
    keyConditionExpression - The condition that specifies the key value(s) for items to be retrieved by the Query action.
    The condition must perform an equality test on a single hash key value. The condition can also perform one of several comparison tests on a single range key value. Query can use KeyConditionExpression to retrieve one item with a given hash and range key value, or several items that have the same hash key value but different range key values.
    The hash key equality test is required, and must be specified in the following format:
    hashAttributeName = :hashval
    If you also want to provide a range key condition, it must be combined using AND with the hash key condition. Following is an example, using the = comparison operator for the range key:
    hashAttributeName = :hashval AND rangeAttributeName = :rangeval
    Valid comparisons for the range key condition are as follows:
    
    rangeAttributeName = :rangeval - true if the range key is equal to :rangeval.
    
    rangeAttributeName < :rangeval - true if the range key is less than :rangeval.
    
    rangeAttributeName <= :rangeval - true if the range key is less than or equal to :rangeval.
    
    rangeAttributeName > :rangeval - true if the range key is greater than :rangeval.
    
    rangeAttributeName >= :rangeval - true if the range key is greater than or equal to :rangeval.
    
    rangeAttributeName BETWEEN :rangeval1 AND :rangeval2 - true if the range key is greater than or equal to :rangeval1, and less than or equal to :rangeval2.
    
    begins_with (rangeAttributeName, :rangeval) - true if the range key begins with a particular operand. (You cannot use this function with a range key that is of type Number.) Note that the function name begins_with is case-sensitive.
    
    Use the ExpressionAttributeValues parameter to replace tokens such as :hashval and :rangeval with actual values at runtime.
    You can optionally use the ExpressionAttributeNames parameter to replace the names of the hash and range attributes with placeholder tokens. This option might be necessary if an attribute name conflicts with a DynamoDB reserved word. For example, the following KeyConditionExpression parameter causes an error because Size is a reserved word:
    
    Size = :myval
    
    To work around this, define a placeholder (such a #S) to represent the attribute name Size. KeyConditionExpression then is as follows:
    
    #S = :myval
    
    For a list of reserved words, see Reserved Words in the Amazon DynamoDB Developer Guide.
    For more information on ExpressionAttributeNames and ExpressionAttributeValues, see Using Placeholders for Attribute Names and Values in the Amazon DynamoDB Developer Guide.
    KeyConditionExpression replaces the legacy KeyConditions parameter.
    Returns:
    A reference to this updated object so that method calls can be chained together.
  - getExpressionAttributeNames
```
public Map<String,String> getExpressionAttributeNames()
```
    One or more substitution tokens for attribute names in an expression. The following are some use cases for using ExpressionAttributeNames:
    - To access an attribute whose name conflicts with a DynamoDB reserved word.
    - To create a placeholder for repeating occurrences of an attribute name in an expression.
    - To prevent special characters in an attribute name from being misinterpreted in an expression.
    Use the # character in an expression to dereference an attribute name. For example, consider the following attribute name:
    - Percentile
    The name of this attribute conflicts with a reserved word, so it cannot be used directly in an expression. (For the complete list of reserved words, see Reserved Words in the Amazon DynamoDB Developer Guide). To work around this, you could specify the following for ExpressionAttributeNames:
    - {"#P":"Percentile"}
    You could then use this substitution in an expression, as in this example:
    - #P = :val
    Tokens that begin with the : character are expression attribute values, which are placeholders for the actual value at runtime.
    For more information on expression attribute names, see Using Placeholders for Attribute Names and Values in the Amazon DynamoDB Developer Guide.
    Returns:
    One or more substitution tokens for attribute names in an expression. The following are some use cases for using ExpressionAttributeNames:
    
    To access an attribute whose name conflicts with a DynamoDB reserved word.
    
    To create a placeholder for repeating occurrences of an attribute name in an expression.
    
    To prevent special characters in an attribute name from being misinterpreted in an expression.
    
    Use the # character in an expression to dereference an attribute name. For example, consider the following attribute name:
    Percentile
    
    The name of this attribute conflicts with a reserved word, so it cannot be used directly in an expression. (For the complete list of reserved words, see Reserved Words in the Amazon DynamoDB Developer Guide). To work around this, you could specify the following for ExpressionAttributeNames:
    {"#P":"Percentile"}
    
    You could then use this substitution in an expression, as in this example:
    #P = :val
    
    Tokens that begin with the : character are expression attribute values, which are placeholders for the actual value at runtime.
    For more information on expression attribute names, see Using Placeholders for Attribute Names and Values in the Amazon DynamoDB Developer Guide.
  - setExpressionAttributeNames
```
public void setExpressionAttributeNames(Map<String,String> expressionAttributeNames)
```
    One or more substitution tokens for attribute names in an expression. The following are some use cases for using ExpressionAttributeNames:
    - To access an attribute whose name conflicts with a DynamoDB reserved word.
    - To create a placeholder for repeating occurrences of an attribute name in an expression.
    - To prevent special characters in an attribute name from being misinterpreted in an expression.
    Use the # character in an expression to dereference an attribute name. For example, consider the following attribute name:
    - Percentile
    The name of this attribute conflicts with a reserved word, so it cannot be used directly in an expression. (For the complete list of reserved words, see Reserved Words in the Amazon DynamoDB Developer Guide). To work around this, you could specify the following for ExpressionAttributeNames:
    - {"#P":"Percentile"}
    You could then use this substitution in an expression, as in this example:
    - #P = :val
    Tokens that begin with the : character are expression attribute values, which are placeholders for the actual value at runtime.
    For more information on expression attribute names, see Using Placeholders for Attribute Names and Values in the Amazon DynamoDB Developer Guide.
    Parameters:
    expressionAttributeNames - One or more substitution tokens for attribute names in an expression. The following are some use cases for using ExpressionAttributeNames:
    
    To access an attribute whose name conflicts with a DynamoDB reserved word.
    
    To create a placeholder for repeating occurrences of an attribute name in an expression.
    
    To prevent special characters in an attribute name from being misinterpreted in an expression.
    
    Use the # character in an expression to dereference an attribute name. For example, consider the following attribute name:
    Percentile
    
    The name of this attribute conflicts with a reserved word, so it cannot be used directly in an expression. (For the complete list of reserved words, see Reserved Words in the Amazon DynamoDB Developer Guide). To work around this, you could specify the following for ExpressionAttributeNames:
    {"#P":"Percentile"}
    
    You could then use this substitution in an expression, as in this example:
    #P = :val
    
    Tokens that begin with the : character are expression attribute values, which are placeholders for the actual value at runtime.
    For more information on expression attribute names, see Using Placeholders for Attribute Names and Values in the Amazon DynamoDB Developer Guide.
  - withExpressionAttributeNames
```
public QueryRequest withExpressionAttributeNames(Map<String,String> expressionAttributeNames)
```
    One or more substitution tokens for attribute names in an expression. The following are some use cases for using ExpressionAttributeNames:
    - To access an attribute whose name conflicts with a DynamoDB reserved word.
    - To create a placeholder for repeating occurrences of an attribute name in an expression.
    - To prevent special characters in an attribute name from being misinterpreted in an expression.
    Use the # character in an expression to dereference an attribute name. For example, consider the following attribute name:
    - Percentile
    The name of this attribute conflicts with a reserved word, so it cannot be used directly in an expression. (For the complete list of reserved words, see Reserved Words in the Amazon DynamoDB Developer Guide). To work around this, you could specify the following for ExpressionAttributeNames:
    - {"#P":"Percentile"}
    You could then use this substitution in an expression, as in this example:
    - #P = :val
    Tokens that begin with the : character are expression attribute values, which are placeholders for the actual value at runtime.
    For more information on expression attribute names, see Using Placeholders for Attribute Names and Values in the Amazon DynamoDB Developer Guide.
    Returns a reference to this object so that method calls can be chained together.
    Parameters:
    expressionAttributeNames - One or more substitution tokens for attribute names in an expression. The following are some use cases for using ExpressionAttributeNames:
    
    To access an attribute whose name conflicts with a DynamoDB reserved word.
    
    To create a placeholder for repeating occurrences of an attribute name in an expression.
    
    To prevent special characters in an attribute name from being misinterpreted in an expression.
    
    Use the # character in an expression to dereference an attribute name. For example, consider the following attribute name:
    Percentile
    
    The name of this attribute conflicts with a reserved word, so it cannot be used directly in an expression. (For the complete list of reserved words, see Reserved Words in the Amazon DynamoDB Developer Guide). To work around this, you could specify the following for ExpressionAttributeNames:
    {"#P":"Percentile"}
    
    You could then use this substitution in an expression, as in this example:
    #P = :val
    
    Tokens that begin with the : character are expression attribute values, which are placeholders for the actual value at runtime.
    For more information on expression attribute names, see Using Placeholders for Attribute Names and Values in the Amazon DynamoDB Developer Guide.
    Returns:
    A reference to this updated object so that method calls can be chained together.
  - addExpressionAttributeNamesEntry
```
public QueryRequest addExpressionAttributeNamesEntry(String key,
                                            String value)
```
    One or more substitution tokens for attribute names in an expression. The following are some use cases for using ExpressionAttributeNames:
    - To access an attribute whose name conflicts with a DynamoDB reserved word.
    - To create a placeholder for repeating occurrences of an attribute name in an expression.
    - To prevent special characters in an attribute name from being misinterpreted in an expression.
    Use the # character in an expression to dereference an attribute name. For example, consider the following attribute name:
    - Percentile
    The name of this attribute conflicts with a reserved word, so it cannot be used directly in an expression. (For the complete list of reserved words, see Reserved Words in the Amazon DynamoDB Developer Guide). To work around this, you could specify the following for ExpressionAttributeNames:
    - {"#P":"Percentile"}
    You could then use this substitution in an expression, as in this example:
    - #P = :val
    Tokens that begin with the : character are expression attribute values, which are placeholders for the actual value at runtime.
    For more information on expression attribute names, see Using Placeholders for Attribute Names and Values in the Amazon DynamoDB Developer Guide.
    The method adds a new key-value pair into ExpressionAttributeNames parameter, and returns a reference to this object so that method calls can be chained together.
    Parameters:
    key - The key of the entry to be added into ExpressionAttributeNames.
    value - The corresponding value of the entry to be added into ExpressionAttributeNames.
  - clearExpressionAttributeNamesEntries
```
public QueryRequest clearExpressionAttributeNamesEntries()
```
    Removes all the entries added into ExpressionAttributeNames.
    Returns a reference to this object so that method calls can be chained together.
  - getExpressionAttributeValues
```
public Map<String,AttributeValue> getExpressionAttributeValues()
```
    One or more values that can be substituted in an expression.
    Use the : (colon) character in an expression to dereference an attribute value. For example, suppose that you wanted to check whether the value of the ProductStatus attribute was one of the following:
    Available | Backordered | Discontinued
    You would first need to specify ExpressionAttributeValues as follows:
    { ":avail":{"S":"Available"}, ":back":{"S":"Backordered"}, ":disc":{"S":"Discontinued"} }
    You could then use these values in an expression, such as this:
    ProductStatus IN (:avail, :back, :disc)
    For more information on expression attribute values, see Using Placeholders for Attribute Names and Values in the Amazon DynamoDB Developer Guide.
    
    Returns:
    One or more values that can be substituted in an expression.
    Use the : (colon) character in an expression to dereference an attribute value. For example, suppose that you wanted to check whether the value of the ProductStatus attribute was one of the following:
    Available | Backordered | Discontinued
    You would first need to specify ExpressionAttributeValues as follows:
    { ":avail":{"S":"Available"}, ":back":{"S":"Backordered"}, ":disc":{"S":"Discontinued"} }
    You could then use these values in an expression, such as this:
    ProductStatus IN (:avail, :back, :disc)
    For more information on expression attribute values, see Using Placeholders for Attribute Names and Values in the Amazon DynamoDB Developer Guide.
  - setExpressionAttributeValues
```
public void setExpressionAttributeValues(Map<String,AttributeValue> expressionAttributeValues)
```
    One or more values that can be substituted in an expression.
    Use the : (colon) character in an expression to dereference an attribute value. For example, suppose that you wanted to check whether the value of the ProductStatus attribute was one of the following:
    Available | Backordered | Discontinued
    You would first need to specify ExpressionAttributeValues as follows:
    { ":avail":{"S":"Available"}, ":back":{"S":"Backordered"}, ":disc":{"S":"Discontinued"} }
    You could then use these values in an expression, such as this:
    ProductStatus IN (:avail, :back, :disc)
    For more information on expression attribute values, see Using Placeholders for Attribute Names and Values in the Amazon DynamoDB Developer Guide.
    
    Parameters:
    expressionAttributeValues - One or more values that can be substituted in an expression.
    Use the : (colon) character in an expression to dereference an attribute value. For example, suppose that you wanted to check whether the value of the ProductStatus attribute was one of the following:
    Available | Backordered | Discontinued
    You would first need to specify ExpressionAttributeValues as follows:
    { ":avail":{"S":"Available"}, ":back":{"S":"Backordered"}, ":disc":{"S":"Discontinued"} }
    You could then use these values in an expression, such as this:
    ProductStatus IN (:avail, :back, :disc)
    For more information on expression attribute values, see Using Placeholders for Attribute Names and Values in the Amazon DynamoDB Developer Guide.
  - withExpressionAttributeValues
```
public QueryRequest withExpressionAttributeValues(Map<String,AttributeValue> expressionAttributeValues)
```
    One or more values that can be substituted in an expression.
    Use the : (colon) character in an expression to dereference an attribute value. For example, suppose that you wanted to check whether the value of the ProductStatus attribute was one of the following:
    Available | Backordered | Discontinued
    You would first need to specify ExpressionAttributeValues as follows:
    { ":avail":{"S":"Available"}, ":back":{"S":"Backordered"}, ":disc":{"S":"Discontinued"} }
    You could then use these values in an expression, such as this:
    ProductStatus IN (:avail, :back, :disc)
    For more information on expression attribute values, see Using Placeholders for Attribute Names and Values in the Amazon DynamoDB Developer Guide.
    Returns a reference to this object so that method calls can be chained together.
    
    Parameters:
    expressionAttributeValues - One or more values that can be substituted in an expression.
    Use the : (colon) character in an expression to dereference an attribute value. For example, suppose that you wanted to check whether the value of the ProductStatus attribute was one of the following:
    Available | Backordered | Discontinued
    You would first need to specify ExpressionAttributeValues as follows:
    { ":avail":{"S":"Available"}, ":back":{"S":"Backordered"}, ":disc":{"S":"Discontinued"} }
    You could then use these values in an expression, such as this:
    ProductStatus IN (:avail, :back, :disc)
    For more information on expression attribute values, see Using Placeholders for Attribute Names and Values in the Amazon DynamoDB Developer Guide.
    
    Returns:
    A reference to this updated object so that method calls can be chained together.
  - addExpressionAttributeValuesEntry
```
public QueryRequest addExpressionAttributeValuesEntry(String key,
                                             AttributeValue value)
```
    One or more values that can be substituted in an expression.
    Use the : (colon) character in an expression to dereference an attribute value. For example, suppose that you wanted to check whether the value of the ProductStatus attribute was one of the following:
    Available | Backordered | Discontinued
    You would first need to specify ExpressionAttributeValues as follows:
    { ":avail":{"S":"Available"}, ":back":{"S":"Backordered"}, ":disc":{"S":"Discontinued"} }
    You could then use these values in an expression, such as this:
    ProductStatus IN (:avail, :back, :disc)
    For more information on expression attribute values, see Using Placeholders for Attribute Names and Values in the Amazon DynamoDB Developer Guide.
    The method adds a new key-value pair into ExpressionAttributeValues parameter, and returns a reference to this object so that method calls can be chained together.
    
    Parameters:
    key - The key of the entry to be added into ExpressionAttributeValues.
    value - The corresponding value of the entry to be added into ExpressionAttributeValues.
  - clearExpressionAttributeValuesEntries
```
public QueryRequest clearExpressionAttributeValuesEntries()
```
    Removes all the entries added into ExpressionAttributeValues.
    Returns a reference to this object so that method calls can be chained together.
  - toString
```
public String toString()
```
    Returns a string representation of this object; useful for testing and debugging.
    
    Overrides:
    
    toString in class Object
    
    Returns:
    A string representation of this object.
    See Also:
    Object.toString()
  - hashCode
```
public int hashCode()
```
    Overrides:
    
    hashCode in class Object
  - equals
```
public boolean equals(Object obj)
```
    Overrides:
    
    equals in class Object
  - clone
```
public QueryRequest clone()
```
    Description copied from class: AmazonWebServiceRequest
    
    Creates a shallow clone of this request. Explicitly does not clone the deep structure of the request object.
    
    Overrides:
    
    clone in class AmazonWebServiceRequest
    
    See Also:
    Object.clone()

Class QueryRequest

Field Summary

Fields inherited from class com.amazonaws.AmazonWebServiceRequest

Constructor Summary

Method Summary

Methods inherited from class com.amazonaws.AmazonWebServiceRequest

Methods inherited from class java.lang.Object

Constructor Detail

QueryRequest

QueryRequest

Method Detail

getTableName

setTableName

withTableName

getIndexName

setIndexName

withIndexName

getSelect

setSelect

withSelect

setSelect

withSelect

getAttributesToGet

setAttributesToGet

withAttributesToGet

withAttributesToGet

getLimit

setLimit

withLimit

isConsistentRead

setConsistentRead

withConsistentRead

getConsistentRead

getKeyConditions

setKeyConditions

withKeyConditions

addKeyConditionsEntry

clearKeyConditionsEntries

getQueryFilter

setQueryFilter

withQueryFilter

addQueryFilterEntry

clearQueryFilterEntries

getConditionalOperator

setConditionalOperator

withConditionalOperator

setConditionalOperator

withConditionalOperator

isScanIndexForward

setScanIndexForward

withScanIndexForward

getScanIndexForward

getExclusiveStartKey

setExclusiveStartKey

withExclusiveStartKey

setExclusiveStartKey

withExclusiveStartKey

addExclusiveStartKeyEntry

clearExclusiveStartKeyEntries

getReturnConsumedCapacity

setReturnConsumedCapacity

withReturnConsumedCapacity

setReturnConsumedCapacity

withReturnConsumedCapacity

getProjectionExpression

setProjectionExpression

withProjectionExpression

getFilterExpression

setFilterExpression

withFilterExpression

getKeyConditionExpression

setKeyConditionExpression

withKeyConditionExpression

getExpressionAttributeNames

setExpressionAttributeNames

withExpressionAttributeNames

addExpressionAttributeNamesEntry

clearExpressionAttributeNamesEntries

getExpressionAttributeValues

setExpressionAttributeValues