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com.amazonaws.services.dynamodbv2.model
Class QueryRequest

java.lang.Object
  extended by com.amazonaws.AmazonWebServiceRequest
      extended by com.amazonaws.services.dynamodbv2.model.QueryRequest
All Implemented Interfaces:
java.io.Serializable
public class QueryRequest
extends AmazonWebServiceRequest
implements java.io.Serializable

Container for the parameters to the Query operation.

A Query operation directly accesses items from a table using the table primary key, or from an index using the index key. You must provide a specific hash key value. You can narrow the scope of the query by using comparison operators on the range key value, or on the index key. 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 read capacity units according to the type of read.

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 a LastEvaluatedKey to continue the query in a subsequent operation. Unlike a Scan operation, a Query operation never returns an empty result set and a LastEvaluatedKey . The LastEvaluatedKey is only provided if the results exceed 1 MB, or if you have used Limit .

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 ConsistentRead 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

Constructor Summary
QueryRequest()
          Default constructor for a new QueryRequest object.
QueryRequest(java.lang.String tableName)
          Constructs a new QueryRequest object.
 
Method Summary
 QueryRequest addExclusiveStartKeyEntry(java.lang.String key, AttributeValue value)
          The primary key of the first item that this operation will evaluate.
 QueryRequest addKeyConditionsEntry(java.lang.String key, Condition value)
          The selection criteria for the query.
 QueryRequest addQueryFilterEntry(java.lang.String key, Condition value)
          Evaluates the query results and returns only the desired values.
 QueryRequest clearExclusiveStartKeyEntries()
          Removes all the entries added into ExclusiveStartKey.
 QueryRequest clearKeyConditionsEntries()
          Removes all the entries added into KeyConditions.
 QueryRequest clearQueryFilterEntries()
          Removes all the entries added into QueryFilter.
 boolean equals(java.lang.Object obj)
           
 java.util.List<java.lang.String> getAttributesToGet()
          The names of one or more attributes to retrieve.
 java.lang.String getConditionalOperator()
          A logical operator to apply to the conditions in the QueryFilter map:
 java.lang.Boolean getConsistentRead()
          If set to true, then the operation uses strongly consistent reads; otherwise, eventually consistent reads are used.
 java.util.Map<java.lang.String,AttributeValue> getExclusiveStartKey()
          The primary key of the first item that this operation will evaluate.
 java.lang.String getIndexName()
          The name of an index to query.
 java.util.Map<java.lang.String,Condition> getKeyConditions()
          The selection criteria for the query.
 java.lang.Integer getLimit()
          The maximum number of items to evaluate (not necessarily the number of matching items).
 java.util.Map<java.lang.String,Condition> getQueryFilter()
          Evaluates the query results and returns only the desired values.
 java.lang.String getReturnConsumedCapacity()
          If set to TOTAL, the response includes ConsumedCapacity data for tables and indexes.
 java.lang.Boolean getScanIndexForward()
          Specifies ascending (true) or descending (false) traversal of the index.
 java.lang.String getSelect()
          The attributes to be returned in the result.
 java.lang.String getTableName()
          The name of the table containing the requested items.
 int hashCode()
           
 java.lang.Boolean isConsistentRead()
          If set to true, then the operation uses strongly consistent reads; otherwise, eventually consistent reads are used.
 java.lang.Boolean isScanIndexForward()
          Specifies ascending (true) or descending (false) traversal of the index.
 void setAttributesToGet(java.util.Collection<java.lang.String> attributesToGet)
          The names of one or more attributes to retrieve.
 void setConditionalOperator(ConditionalOperator conditionalOperator)
          A logical operator to apply to the conditions in the QueryFilter map:
 void setConditionalOperator(java.lang.String conditionalOperator)
          A logical operator to apply to the conditions in the QueryFilter map:
 void setConsistentRead(java.lang.Boolean consistentRead)
          If set to true, then the operation uses strongly consistent reads; otherwise, eventually consistent reads are used.
 void setExclusiveStartKey(java.util.Map.Entry<java.lang.String,AttributeValue> hashKey, java.util.Map.Entry<java.lang.String,AttributeValue> rangeKey)
          The primary key of the first item that this operation will evaluate.
 void setExclusiveStartKey(java.util.Map<java.lang.String,AttributeValue> exclusiveStartKey)
          The primary key of the first item that this operation will evaluate.
 void setIndexName(java.lang.String indexName)
          The name of an index to query.
 void setKeyConditions(java.util.Map<java.lang.String,Condition> keyConditions)
          The selection criteria for the query.
 void setLimit(java.lang.Integer limit)
          The maximum number of items to evaluate (not necessarily the number of matching items).
 void setQueryFilter(java.util.Map<java.lang.String,Condition> queryFilter)
          Evaluates the query results and returns only the desired values.
 void setReturnConsumedCapacity(ReturnConsumedCapacity returnConsumedCapacity)
          If set to TOTAL, the response includes ConsumedCapacity data for tables and indexes.
 void setReturnConsumedCapacity(java.lang.String returnConsumedCapacity)
          If set to TOTAL, the response includes ConsumedCapacity data for tables and indexes.
 void setScanIndexForward(java.lang.Boolean scanIndexForward)
          Specifies ascending (true) or descending (false) traversal of the index.
 void setSelect(Select select)
          The attributes to be returned in the result.
 void setSelect(java.lang.String select)
          The attributes to be returned in the result.
 void setTableName(java.lang.String tableName)
          The name of the table containing the requested items.
 java.lang.String toString()
          Returns a string representation of this object; useful for testing and debugging.
 QueryRequest withAttributesToGet(java.util.Collection<java.lang.String> attributesToGet)
          The names of one or more attributes to retrieve.
 QueryRequest withAttributesToGet(java.lang.String... attributesToGet)
          The names of one or more attributes to retrieve.
 QueryRequest withConditionalOperator(ConditionalOperator conditionalOperator)
          A logical operator to apply to the conditions in the QueryFilter map:
 QueryRequest withConditionalOperator(java.lang.String conditionalOperator)
          A logical operator to apply to the conditions in the QueryFilter map:
 QueryRequest withConsistentRead(java.lang.Boolean consistentRead)
          If set to true, then the operation uses strongly consistent reads; otherwise, eventually consistent reads are used.
 QueryRequest withExclusiveStartKey(java.util.Map.Entry<java.lang.String,AttributeValue> hashKey, java.util.Map.Entry<java.lang.String,AttributeValue> rangeKey)
          The primary key of the first item that this operation will evaluate.
 QueryRequest withExclusiveStartKey(java.util.Map<java.lang.String,AttributeValue> exclusiveStartKey)
          The primary key of the first item that this operation will evaluate.
 QueryRequest withIndexName(java.lang.String indexName)
          The name of an index to query.
 QueryRequest withKeyConditions(java.util.Map<java.lang.String,Condition> keyConditions)
          The selection criteria for the query.
 QueryRequest withLimit(java.lang.Integer limit)
          The maximum number of items to evaluate (not necessarily the number of matching items).
 QueryRequest withQueryFilter(java.util.Map<java.lang.String,Condition> queryFilter)
          Evaluates the query results and returns only the desired values.
 QueryRequest withReturnConsumedCapacity(ReturnConsumedCapacity returnConsumedCapacity)
          If set to TOTAL, the response includes ConsumedCapacity data for tables and indexes.
 QueryRequest withReturnConsumedCapacity(java.lang.String returnConsumedCapacity)
          If set to TOTAL, the response includes ConsumedCapacity data for tables and indexes.
 QueryRequest withScanIndexForward(java.lang.Boolean scanIndexForward)
          Specifies ascending (true) or descending (false) traversal of the index.
 QueryRequest withSelect(Select select)
          The attributes to be returned in the result.
 QueryRequest withSelect(java.lang.String select)
          The attributes to be returned in the result.
 QueryRequest withTableName(java.lang.String tableName)
          The name of the table containing the requested items.
 
Methods inherited from class com.amazonaws.AmazonWebServiceRequest
copyPrivateRequestParameters, getDelegationToken, getRequestClientOptions, getRequestCredentials, getRequestMetricCollector, setDelegationToken, setRequestCredentials, setRequestMetricCollector, withRequestMetricCollector
 
Methods inherited from class java.lang.Object
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(java.lang.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 java.lang.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(java.lang.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(java.lang.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 java.lang.String getIndexName()
The name of an index to query. This can be any local secondary index or global secondary index on the table.

Constraints:
Length: 3 - 255
Pattern: [a-zA-Z0-9_.-]+

Returns:
The name of an index to query. This can be any local secondary index or global secondary index on the table.

setIndexName

public void setIndexName(java.lang.String indexName)
The name of an index to query. This can be any local secondary index or global secondary index on the table.

Constraints:
Length: 3 - 255
Pattern: [a-zA-Z0-9_.-]+

Parameters:
indexName - The name of an index to query. This can be any local secondary index or global secondary index on the table.

withIndexName

public QueryRequest withIndexName(java.lang.String indexName)
The name of an index to query. This can be any local secondary index or global secondary index on the table.

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 can be any local secondary index or global secondary index on the table.
Returns:
A reference to this updated object so that method calls can be chained together.

getSelect

public java.lang.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.

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.)

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 are querying 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 which have been projected into the index. If the index is configured to project all attributes, this 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 is equivalent to specifying AttributesToGet without specifying any value for Select.

    If you are querying 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 are querying 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.)

See Also:
Select

setSelect

public void setSelect(java.lang.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.

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.)

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 are querying 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 which have been projected into the index. If the index is configured to project all attributes, this 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 is equivalent to specifying AttributesToGet without specifying any value for Select.

    If you are querying 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 are querying 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.)

See Also:
Select

withSelect

public QueryRequest withSelect(java.lang.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.

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.)

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 are querying 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 which have been projected into the index. If the index is configured to project all attributes, this 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 is equivalent to specifying AttributesToGet without specifying any value for Select.

    If you are querying 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 are querying 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.)

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.

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.)

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 are querying 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 which have been projected into the index. If the index is configured to project all attributes, this 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 is equivalent to specifying AttributesToGet without specifying any value for Select.

    If you are querying 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 are querying 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.)

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.

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.)

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 are querying 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 which have been projected into the index. If the index is configured to project all attributes, this 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 is equivalent to specifying AttributesToGet without specifying any value for Select.

    If you are querying 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 are querying 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.)

Returns:
A reference to this updated object so that method calls can be chained together.
See Also:
Select

getAttributesToGet

public java.util.List<java.lang.String> getAttributesToGet()
The names of one or more attributes to retrieve. 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.

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 are querying 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 are querying 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:
The names of one or more attributes to retrieve. 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.

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 are querying 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 are querying 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(java.util.Collection<java.lang.String> attributesToGet)
The names of one or more attributes to retrieve. 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.

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 are querying 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 are querying 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 - The names of one or more attributes to retrieve. 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.

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 are querying 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 are querying 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(java.lang.String... attributesToGet)
The names of one or more attributes to retrieve. 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.

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 are querying 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 are querying 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 - The names of one or more attributes to retrieve. 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.

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 are querying 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 are querying 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(java.util.Collection<java.lang.String> attributesToGet)
The names of one or more attributes to retrieve. 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.

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 are querying 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 are querying 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 - The names of one or more attributes to retrieve. 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.

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 are querying 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 are querying 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 java.lang.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 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 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 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 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(java.lang.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 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 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 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 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(java.lang.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 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 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 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 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 java.lang.Boolean isConsistentRead()
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:
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(java.lang.Boolean consistentRead)
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 - 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(java.lang.Boolean consistentRead)
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 - 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 java.lang.Boolean getConsistentRead()
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:
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 java.util.Map<java.lang.String,Condition> getKeyConditions()
The selection criteria for the query.

For a query on a table, you can only have conditions on the table primary key attributes. You must specify the hash key attribute name and value as an EQ condition. You can optionally specify a second condition, referring to the range key attribute.

For a query on an index, you can only have conditions on the index key attributes. You must specify the index hash attribute name and value as an EQ condition. You can optionally specify a second condition, referring to the index key range attribute.

If you specify more than one condition in the KeyConditions 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.)

Each KeyConditions element consists of an attribute name to compare, along with the following:

For usage examples of AttributeValueList and ComparisonOperator, see Conditional Expressions in the Amazon DynamoDB Developer Guide.

Returns:
The selection criteria for the query.

For a query on a table, you can only have conditions on the table primary key attributes. You must specify the hash key attribute name and value as an EQ condition. You can optionally specify a second condition, referring to the range key attribute.

For a query on an index, you can only have conditions on the index key attributes. You must specify the index hash attribute name and value as an EQ condition. You can optionally specify a second condition, referring to the index key range attribute.

If you specify more than one condition in the KeyConditions 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.)

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 aa 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, for example when evaluating query expressions.

  • ComparisonOperator - A comparator for evaluating attributes. For example, equals, greater than, less than, etc.

    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). If an item contains an AttributeValue 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 of type String, Number, or Binary (not a set). If an item contains an AttributeValue 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 compare to {"NS":["6", "2", "1"]}.

    • LT : Less than.

      AttributeValueList can contain only one AttributeValue of type String, Number, or Binary (not a set). If an item contains an AttributeValue 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 compare to {"NS":["6", "2", "1"]}.

    • GE : Greater than or equal.

      AttributeValueList can contain only one AttributeValue of type String, Number, or Binary (not a set). If an item contains an AttributeValue 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 compare to {"NS":["6", "2", "1"]}.

    • GT : Greater than.

      AttributeValueList can contain only one AttributeValue of type String, Number, or Binary (not a set). If an item contains an AttributeValue 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 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). The target attribute of the comparison must be a String or Binary (not a Number or a set).

    • 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). 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 of a different type than the one specified 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 Conditional Expressions in the Amazon DynamoDB Developer Guide.

setKeyConditions

public void setKeyConditions(java.util.Map<java.lang.String,Condition> keyConditions)
The selection criteria for the query.

For a query on a table, you can only have conditions on the table primary key attributes. You must specify the hash key attribute name and value as an EQ condition. You can optionally specify a second condition, referring to the range key attribute.

For a query on an index, you can only have conditions on the index key attributes. You must specify the index hash attribute name and value as an EQ condition. You can optionally specify a second condition, referring to the index key range attribute.

If you specify more than one condition in the KeyConditions 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.)

Each KeyConditions element consists of an attribute name to compare, along with the following:

For usage examples of AttributeValueList and ComparisonOperator, see Conditional Expressions in the Amazon DynamoDB Developer Guide.

Parameters:
keyConditions - The selection criteria for the query.

For a query on a table, you can only have conditions on the table primary key attributes. You must specify the hash key attribute name and value as an EQ condition. You can optionally specify a second condition, referring to the range key attribute.

For a query on an index, you can only have conditions on the index key attributes. You must specify the index hash attribute name and value as an EQ condition. You can optionally specify a second condition, referring to the index key range attribute.

If you specify more than one condition in the KeyConditions 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.)

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 aa 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, for example when evaluating query expressions.

  • ComparisonOperator - A comparator for evaluating attributes. For example, equals, greater than, less than, etc.

    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). If an item contains an AttributeValue 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 of type String, Number, or Binary (not a set). If an item contains an AttributeValue 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 compare to {"NS":["6", "2", "1"]}.

    • LT : Less than.

      AttributeValueList can contain only one AttributeValue of type String, Number, or Binary (not a set). If an item contains an AttributeValue 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 compare to {"NS":["6", "2", "1"]}.

    • GE : Greater than or equal.

      AttributeValueList can contain only one AttributeValue of type String, Number, or Binary (not a set). If an item contains an AttributeValue 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 compare to {"NS":["6", "2", "1"]}.

    • GT : Greater than.

      AttributeValueList can contain only one AttributeValue of type String, Number, or Binary (not a set). If an item contains an AttributeValue 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 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). The target attribute of the comparison must be a String or Binary (not a Number or a set).

    • 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). 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 of a different type than the one specified 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 Conditional Expressions in the Amazon DynamoDB Developer Guide.

withKeyConditions

public QueryRequest withKeyConditions(java.util.Map<java.lang.String,Condition> keyConditions)
The selection criteria for the query.

For a query on a table, you can only have conditions on the table primary key attributes. You must specify the hash key attribute name and value as an EQ condition. You can optionally specify a second condition, referring to the range key attribute.

For a query on an index, you can only have conditions on the index key attributes. You must specify the index hash attribute name and value as an EQ condition. You can optionally specify a second condition, referring to the index key range attribute.

If you specify more than one condition in the KeyConditions 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.)

Each KeyConditions element consists of an attribute name to compare, along with the following:

For usage examples of AttributeValueList and ComparisonOperator, see Conditional Expressions in the Amazon DynamoDB Developer Guide.

Returns a reference to this object so that method calls can be chained together.

Parameters:
keyConditions - The selection criteria for the query.

For a query on a table, you can only have conditions on the table primary key attributes. You must specify the hash key attribute name and value as an EQ condition. You can optionally specify a second condition, referring to the range key attribute.

For a query on an index, you can only have conditions on the index key attributes. You must specify the index hash attribute name and value as an EQ condition. You can optionally specify a second condition, referring to the index key range attribute.

If you specify more than one condition in the KeyConditions 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.)

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 aa 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, for example when evaluating query expressions.

  • ComparisonOperator - A comparator for evaluating attributes. For example, equals, greater than, less than, etc.

    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). If an item contains an AttributeValue 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 of type String, Number, or Binary (not a set). If an item contains an AttributeValue 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 compare to {"NS":["6", "2", "1"]}.

    • LT : Less than.

      AttributeValueList can contain only one AttributeValue of type String, Number, or Binary (not a set). If an item contains an AttributeValue 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 compare to {"NS":["6", "2", "1"]}.

    • GE : Greater than or equal.

      AttributeValueList can contain only one AttributeValue of type String, Number, or Binary (not a set). If an item contains an AttributeValue 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 compare to {"NS":["6", "2", "1"]}.

    • GT : Greater than.

      AttributeValueList can contain only one AttributeValue of type String, Number, or Binary (not a set). If an item contains an AttributeValue 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 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). The target attribute of the comparison must be a String or Binary (not a Number or a set).

    • 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). 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 of a different type than the one specified 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 Conditional Expressions 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(java.lang.String key,
                                          Condition value)
The selection criteria for the query.

For a query on a table, you can only have conditions on the table primary key attributes. You must specify the hash key attribute name and value as an EQ condition. You can optionally specify a second condition, referring to the range key attribute.

For a query on an index, you can only have conditions on the index key attributes. You must specify the index hash attribute name and value as an EQ condition. You can optionally specify a second condition, referring to the index key range attribute.

If you specify more than one condition in the KeyConditions 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.)

Each KeyConditions element consists of an attribute name to compare, along with the following:

For usage examples of AttributeValueList and ComparisonOperator, see Conditional Expressions 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 java.util.Map<java.lang.String,Condition> getQueryFilter()
Evaluates the query results and returns only the desired values.

If you specify 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.)

Each QueryFilter element consists of an attribute name to compare, along with the following:

Returns:
Evaluates the query results and returns only the desired values.

If you specify 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.)

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 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 aa 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, for example when evaluating query expressions.

    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 API_Condition.html.

setQueryFilter

public void setQueryFilter(java.util.Map<java.lang.String,Condition> queryFilter)
Evaluates the query results and returns only the desired values.

If you specify 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.)

Each QueryFilter element consists of an attribute name to compare, along with the following:

Parameters:
queryFilter - Evaluates the query results and returns only the desired values.

If you specify 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.)

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 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 aa 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, for example when evaluating query expressions.

    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 API_Condition.html.

withQueryFilter

public QueryRequest withQueryFilter(java.util.Map<java.lang.String,Condition> queryFilter)
Evaluates the query results and returns only the desired values.

If you specify 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.)

Each QueryFilter element consists of an attribute name to compare, along with the following:

Returns a reference to this object so that method calls can be chained together.

Parameters:
queryFilter - Evaluates the query results and returns only the desired values.

If you specify 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.)

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 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 aa 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, for example when evaluating query expressions.

    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 API_Condition.html.

Returns:
A reference to this updated object so that method calls can be chained together.

addQueryFilterEntry

public QueryRequest addQueryFilterEntry(java.lang.String key,
                                        Condition value)
Evaluates the query results and returns only the desired values.

If you specify 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.)

Each QueryFilter element consists of an attribute name to compare, along with the following:

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 java.lang.String getConditionalOperator()
A logical operator to apply to the conditions in the QueryFilter map:

If you omit ConditionalOperator, then AND is the default.

The operation will succeed only if the entire map evaluates to true.

Constraints:
Allowed Values: AND, OR

Returns:
A logical operator to apply to the conditions in the 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.

See Also:
ConditionalOperator

setConditionalOperator

public void setConditionalOperator(java.lang.String conditionalOperator)
A logical operator to apply to the conditions in the QueryFilter map:

If you omit ConditionalOperator, then AND is the default.

The operation will succeed only if the entire map evaluates to true.

Constraints:
Allowed Values: AND, OR

Parameters:
conditionalOperator - A logical operator to apply to the conditions in the 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.

See Also:
ConditionalOperator

withConditionalOperator

public QueryRequest withConditionalOperator(java.lang.String conditionalOperator)
A logical operator to apply to the conditions in the QueryFilter map:

If you omit ConditionalOperator, then AND is the default.

The operation will succeed only if the entire map evaluates to true.

Returns a reference to this object so that method calls can be chained together.

Constraints:
Allowed Values: AND, OR

Parameters:
conditionalOperator - A logical operator to apply to the conditions in the 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.

Returns:
A reference to this updated object so that method calls can be chained together.
See Also:
ConditionalOperator

setConditionalOperator

public void setConditionalOperator(ConditionalOperator conditionalOperator)
A logical operator to apply to the conditions in the QueryFilter map:

If you omit ConditionalOperator, then AND is the default.

The operation will succeed only if the entire map evaluates to true.

Constraints:
Allowed Values: AND, OR

Parameters:
conditionalOperator - A logical operator to apply to the conditions in the 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.

See Also:
ConditionalOperator

withConditionalOperator

public QueryRequest withConditionalOperator(ConditionalOperator conditionalOperator)
A logical operator to apply to the conditions in the QueryFilter map:

If you omit ConditionalOperator, then AND is the default.

The operation will succeed only if the entire map evaluates to true.

Returns a reference to this object so that method calls can be chained together.

Constraints:
Allowed Values: AND, OR

Parameters:
conditionalOperator - A logical operator to apply to the conditions in the 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.

Returns:
A reference to this updated object so that method calls can be chained together.
See Also:
ConditionalOperator

isScanIndexForward

public java.lang.Boolean isScanIndexForward()
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 String, the results are returned in order of ASCII character code values. For 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:
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 String, the results are returned in order of ASCII character code values. For 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(java.lang.Boolean scanIndexForward)
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 String, the results are returned in order of ASCII character code values. For 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 - 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 String, the results are returned in order of ASCII character code values. For 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(java.lang.Boolean scanIndexForward)
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 String, the results are returned in order of ASCII character code values. For 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 - 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 String, the results are returned in order of ASCII character code values. For 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 java.lang.Boolean getScanIndexForward()
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 String, the results are returned in order of ASCII character code values. For 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:
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 String, the results are returned in order of ASCII character code values. For 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 java.util.Map<java.lang.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(java.util.Map<java.lang.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(java.util.Map<java.lang.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(java.util.Map.Entry<java.lang.String,AttributeValue> hashKey,
                                 java.util.Map.Entry<java.lang.String,AttributeValue> rangeKey)
                          throws java.lang.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:
java.lang.IllegalArgumentException

withExclusiveStartKey

public QueryRequest withExclusiveStartKey(java.util.Map.Entry<java.lang.String,AttributeValue> hashKey,
                                          java.util.Map.Entry<java.lang.String,AttributeValue> rangeKey)
                                   throws java.lang.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:
java.lang.IllegalArgumentException

addExclusiveStartKeyEntry

public QueryRequest addExclusiveStartKeyEntry(java.lang.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 java.lang.String getReturnConsumedCapacity()
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:
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(java.lang.String returnConsumedCapacity)
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 - 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(java.lang.String returnConsumedCapacity)
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 - 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)
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 - 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)
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 - 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

toString

public java.lang.String toString()
Returns a string representation of this object; useful for testing and debugging.

Overrides:
toString in class java.lang.Object
Returns:
A string representation of this object.
See Also:
Object.toString()

hashCode

public int hashCode()
Overrides:
hashCode in class java.lang.Object

equals

public boolean equals(java.lang.Object obj)
Overrides:
equals in class java.lang.Object
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