public class ScanRequest extends AmazonWebServiceRequest implements Serializable, Cloneable
Represents the input of a Scan operation.
NOOP| Constructor and Description |
|---|
ScanRequest()
Default constructor for ScanRequest object.
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ScanRequest(String tableName)
Constructs a new ScanRequest object.
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| Modifier and Type | Method and Description |
|---|---|
ScanRequest |
addExclusiveStartKeyEntry(String key,
AttributeValue value) |
ScanRequest |
addExpressionAttributeNamesEntry(String key,
String value) |
ScanRequest |
addExpressionAttributeValuesEntry(String key,
AttributeValue value) |
ScanRequest |
addScanFilterEntry(String key,
Condition value) |
ScanRequest |
clearExclusiveStartKeyEntries()
Removes all the entries added into ExclusiveStartKey.
|
ScanRequest |
clearExpressionAttributeNamesEntries()
Removes all the entries added into ExpressionAttributeNames.
|
ScanRequest |
clearExpressionAttributeValuesEntries()
Removes all the entries added into ExpressionAttributeValues.
|
ScanRequest |
clearScanFilterEntries()
Removes all the entries added into ScanFilter.
|
ScanRequest |
clone() |
boolean |
equals(Object obj) |
List<String> |
getAttributesToGet()
|
String |
getConditionalOperator()
|
Boolean |
getConsistentRead()
A Boolean value that determines the read consistency model during the
scan:
|
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
Scan operation, but before the data is returned to you.
|
String |
getIndexName()
The name of a secondary index to scan.
|
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
specified table or index.
|
String |
getReturnConsumedCapacity() |
Map<String,Condition> |
getScanFilter()
|
Integer |
getSegment()
For a parallel Scan request, Segment identifies an
individual segment to be scanned by an application worker.
|
String |
getSelect()
The attributes to be returned in the result.
|
String |
getTableName()
The name of the table containing the requested items; or, if you provide
IndexName, the name of the table to which that index
belongs. |
Integer |
getTotalSegments()
For a parallel Scan request, TotalSegments represents the
total number of segments into which the Scan operation will be
divided.
|
int |
hashCode() |
Boolean |
isConsistentRead()
A Boolean value that determines the read consistency model during the
scan:
|
void |
setAttributesToGet(Collection<String> attributesToGet)
|
void |
setConditionalOperator(ConditionalOperator conditionalOperator)
|
void |
setConditionalOperator(String conditionalOperator)
|
void |
setConsistentRead(Boolean consistentRead)
A Boolean value that determines the read consistency model during the
scan:
|
void |
setExclusiveStartKey(Map.Entry<String,AttributeValue> hashKey,
Map.Entry<String,AttributeValue> rangeKey)
The primary hash and range keys 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
Scan operation, but before the data is returned to you.
|
void |
setIndexName(String indexName)
The name of a secondary index to scan.
|
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
specified table or index.
|
void |
setReturnConsumedCapacity(ReturnConsumedCapacity returnConsumedCapacity) |
void |
setReturnConsumedCapacity(String returnConsumedCapacity) |
void |
setScanFilter(Map<String,Condition> scanFilter)
|
void |
setSegment(Integer segment)
For a parallel Scan request, Segment identifies an
individual segment to be scanned by an application worker.
|
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; or, if you provide
IndexName, the name of the table to which that index
belongs. |
void |
setTotalSegments(Integer totalSegments)
For a parallel Scan request, TotalSegments represents the
total number of segments into which the Scan operation will be
divided.
|
String |
toString()
Returns a string representation of this object; useful for testing and
debugging.
|
ScanRequest |
withAttributesToGet(Collection<String> attributesToGet)
|
ScanRequest |
withAttributesToGet(String... attributesToGet)
|
ScanRequest |
withConditionalOperator(ConditionalOperator conditionalOperator)
|
ScanRequest |
withConditionalOperator(String conditionalOperator)
|
ScanRequest |
withConsistentRead(Boolean consistentRead)
A Boolean value that determines the read consistency model during the
scan:
|
ScanRequest |
withExclusiveStartKey(Map.Entry<String,AttributeValue> hashKey,
Map.Entry<String,AttributeValue> rangeKey)
The primary hash and range keys of the first item that this operation
will evaluate.
|
ScanRequest |
withExclusiveStartKey(Map<String,AttributeValue> exclusiveStartKey)
The primary key of the first item that this operation will evaluate.
|
ScanRequest |
withExpressionAttributeNames(Map<String,String> expressionAttributeNames)
One or more substitution tokens for attribute names in an expression.
|
ScanRequest |
withExpressionAttributeValues(Map<String,AttributeValue> expressionAttributeValues)
One or more values that can be substituted in an expression.
|
ScanRequest |
withFilterExpression(String filterExpression)
A string that contains conditions that DynamoDB applies after the
Scan operation, but before the data is returned to you.
|
ScanRequest |
withIndexName(String indexName)
The name of a secondary index to scan.
|
ScanRequest |
withLimit(Integer limit)
The maximum number of items to evaluate (not necessarily the number of
matching items).
|
ScanRequest |
withProjectionExpression(String projectionExpression)
A string that identifies one or more attributes to retrieve from the
specified table or index.
|
ScanRequest |
withReturnConsumedCapacity(ReturnConsumedCapacity returnConsumedCapacity) |
ScanRequest |
withReturnConsumedCapacity(String returnConsumedCapacity) |
ScanRequest |
withScanFilter(Map<String,Condition> scanFilter)
|
ScanRequest |
withSegment(Integer segment)
For a parallel Scan request, Segment identifies an
individual segment to be scanned by an application worker.
|
ScanRequest |
withSelect(Select select)
The attributes to be returned in the result.
|
ScanRequest |
withSelect(String select)
The attributes to be returned in the result.
|
ScanRequest |
withTableName(String tableName)
The name of the table containing the requested items; or, if you provide
IndexName, the name of the table to which that index
belongs. |
ScanRequest |
withTotalSegments(Integer totalSegments)
For a parallel Scan request, TotalSegments represents the
total number of segments into which the Scan operation will be
divided.
|
copyBaseTo, getCloneRoot, getCloneSource, getCustomQueryParameters, getCustomRequestHeaders, getGeneralProgressListener, getReadLimit, getRequestClientOptions, getRequestCredentials, getRequestMetricCollector, getSdkClientExecutionTimeout, getSdkRequestTimeout, putCustomQueryParameter, putCustomRequestHeader, setGeneralProgressListener, setRequestCredentials, setRequestMetricCollector, setSdkClientExecutionTimeout, setSdkRequestTimeout, withGeneralProgressListener, withRequestMetricCollector, withSdkClientExecutionTimeout, withSdkRequestTimeoutpublic ScanRequest()
public ScanRequest(String tableName)
tableName - The name of the table containing the requested items; or, if you
provide IndexName, the name of the table to which
that index belongs.public void setTableName(String tableName)
The name of the table containing the requested items; or, if you provide
IndexName, the name of the table to which that index
belongs.
tableName - The name of the table containing the requested items; or, if you
provide IndexName, the name of the table to which
that index belongs.public String getTableName()
The name of the table containing the requested items; or, if you provide
IndexName, the name of the table to which that index
belongs.
IndexName, the name of the table to which
that index belongs.public ScanRequest withTableName(String tableName)
The name of the table containing the requested items; or, if you provide
IndexName, the name of the table to which that index
belongs.
tableName - The name of the table containing the requested items; or, if you
provide IndexName, the name of the table to which
that index belongs.public void setIndexName(String indexName)
The name of a secondary index to scan. This index can be any local
secondary index or global secondary index. Note that if you use the
IndexName parameter, you must also provide
TableName.
indexName - The name of a secondary index to scan. This index can be any local
secondary index or global secondary index. Note that if you use
the IndexName parameter, you must also provide
TableName.public String getIndexName()
The name of a secondary index to scan. This index can be any local
secondary index or global secondary index. Note that if you use the
IndexName parameter, you must also provide
TableName.
IndexName parameter, you must also provide
TableName.public ScanRequest withIndexName(String indexName)
The name of a secondary index to scan. This index can be any local
secondary index or global secondary index. Note that if you use the
IndexName parameter, you must also provide
TableName.
indexName - The name of a secondary index to scan. This index can be any local
secondary index or global secondary index. Note that if you use
the IndexName parameter, you must also provide
TableName.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.
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
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.
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
public ScanRequest 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.
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.
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
public ScanRequest 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.
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
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.
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.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.
public ScanRequest 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.
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.public void setSelect(String select)
The attributes to be returned in the result. You can retrieve all item attributes, specific item attributes, or the count of matching items.
ALL_ATTRIBUTES - Returns all of the item 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 neither Select nor AttributesToGet are specified,
DynamoDB defaults to ALL_ATTRIBUTES. You cannot use both
AttributesToGet and Select 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.)
select - The attributes to be returned in the result. You can retrieve all
item attributes, specific item attributes, or the count of
matching items.
ALL_ATTRIBUTES - Returns all of the item 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 neither Select nor AttributesToGet are specified,
DynamoDB defaults to ALL_ATTRIBUTES. You cannot use
both AttributesToGet and Select 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.)
Selectpublic String getSelect()
The attributes to be returned in the result. You can retrieve all item attributes, specific item attributes, or the count of matching items.
ALL_ATTRIBUTES - Returns all of the item 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 neither Select nor AttributesToGet are specified,
DynamoDB defaults to ALL_ATTRIBUTES. You cannot use both
AttributesToGet and Select 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.)
ALL_ATTRIBUTES - Returns all of the item 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 neither Select nor AttributesToGet are
specified, DynamoDB defaults to ALL_ATTRIBUTES. You
cannot use both AttributesToGet and Select 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.)
Selectpublic ScanRequest withSelect(String select)
The attributes to be returned in the result. You can retrieve all item attributes, specific item attributes, or the count of matching items.
ALL_ATTRIBUTES - Returns all of the item 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 neither Select nor AttributesToGet are specified,
DynamoDB defaults to ALL_ATTRIBUTES. You cannot use both
AttributesToGet and Select 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.)
select - The attributes to be returned in the result. You can retrieve all
item attributes, specific item attributes, or the count of
matching items.
ALL_ATTRIBUTES - Returns all of the item 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 neither Select nor AttributesToGet are specified,
DynamoDB defaults to ALL_ATTRIBUTES. You cannot use
both AttributesToGet and Select 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.)
Selectpublic void setSelect(Select select)
The attributes to be returned in the result. You can retrieve all item attributes, specific item attributes, or the count of matching items.
ALL_ATTRIBUTES - Returns all of the item 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 neither Select nor AttributesToGet are specified,
DynamoDB defaults to ALL_ATTRIBUTES. You cannot use both
AttributesToGet and Select 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.)
select - The attributes to be returned in the result. You can retrieve all
item attributes, specific item attributes, or the count of
matching items.
ALL_ATTRIBUTES - Returns all of the item 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 neither Select nor AttributesToGet are specified,
DynamoDB defaults to ALL_ATTRIBUTES. You cannot use
both AttributesToGet and Select 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.)
Selectpublic ScanRequest withSelect(Select select)
The attributes to be returned in the result. You can retrieve all item attributes, specific item attributes, or the count of matching items.
ALL_ATTRIBUTES - Returns all of the item 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 neither Select nor AttributesToGet are specified,
DynamoDB defaults to ALL_ATTRIBUTES. You cannot use both
AttributesToGet and Select 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.)
select - The attributes to be returned in the result. You can retrieve all
item attributes, specific item attributes, or the count of
matching items.
ALL_ATTRIBUTES - Returns all of the item 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 neither Select nor AttributesToGet are specified,
DynamoDB defaults to ALL_ATTRIBUTES. You cannot use
both AttributesToGet and Select 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.)
Selectpublic Map<String,Condition> getScanFilter()
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 scan results and returns only the desired values.
This parameter does not support attributes of type List or Map.
If you specify more than one condition in the ScanFilter 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 ScanFilter 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 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 Condition.
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 scan results and returns only the desired values.
This parameter does not support attributes of type List or Map.
If you specify more than one condition in the ScanFilter 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 ScanFilter 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 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 Condition.
public void setScanFilter(Map<String,Condition> scanFilter)
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 scan results and returns only the desired values.
This parameter does not support attributes of type List or Map.
If you specify more than one condition in the ScanFilter 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 ScanFilter 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 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 Condition.
scanFilter - 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 scan results and returns only the desired values.
This parameter does not support attributes of type List or Map.
If you specify more than one condition in the ScanFilter 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 ScanFilter 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 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 Condition.
public ScanRequest withScanFilter(Map<String,Condition> scanFilter)
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 scan results and returns only the desired values.
This parameter does not support attributes of type List or Map.
If you specify more than one condition in the ScanFilter 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 ScanFilter 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 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 Condition.
scanFilter - 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 scan results and returns only the desired values.
This parameter does not support attributes of type List or Map.
If you specify more than one condition in the ScanFilter 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 ScanFilter 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 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 Condition.
public ScanRequest addScanFilterEntry(String key, Condition value)
public ScanRequest clearScanFilterEntries()
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 ScanFilter 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.
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 ScanFilter 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.
ConditionalOperatorpublic 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 ScanFilter 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.
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 ScanFilter 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.
ConditionalOperatorpublic ScanRequest 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 ScanFilter 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.
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 ScanFilter 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.
ConditionalOperatorpublic 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 ScanFilter 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.
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 ScanFilter 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.
ConditionalOperatorpublic ScanRequest 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 ScanFilter 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.
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 ScanFilter 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.
ConditionalOperatorpublic 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.
In a parallel scan, a Scan request that includes ExclusiveStartKey must specify the same segment whose previous Scan returned the corresponding value of LastEvaluatedKey.
The data type for ExclusiveStartKey must be String, Number or Binary. No set data types are allowed.
In a parallel scan, a Scan request that includes ExclusiveStartKey must specify the same segment whose previous Scan returned the corresponding value of LastEvaluatedKey.
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.
In a parallel scan, a Scan request that includes ExclusiveStartKey must specify the same segment whose previous Scan returned the corresponding value of LastEvaluatedKey.
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.
In a parallel scan, a Scan request that includes ExclusiveStartKey must specify the same segment whose previous Scan returned the corresponding value of LastEvaluatedKey.
public ScanRequest 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.
In a parallel scan, a Scan request that includes ExclusiveStartKey must specify the same segment whose previous Scan returned the corresponding value of LastEvaluatedKey.
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.
In a parallel scan, a Scan request that includes ExclusiveStartKey must specify the same segment whose previous Scan returned the corresponding value of LastEvaluatedKey.
public ScanRequest addExclusiveStartKeyEntry(String key, AttributeValue value)
public ScanRequest clearExclusiveStartKeyEntries()
public void setReturnConsumedCapacity(String returnConsumedCapacity)
returnConsumedCapacity - ReturnConsumedCapacitypublic String getReturnConsumedCapacity()
ReturnConsumedCapacitypublic ScanRequest withReturnConsumedCapacity(String returnConsumedCapacity)
returnConsumedCapacity - ReturnConsumedCapacitypublic void setReturnConsumedCapacity(ReturnConsumedCapacity returnConsumedCapacity)
returnConsumedCapacity - ReturnConsumedCapacitypublic ScanRequest withReturnConsumedCapacity(ReturnConsumedCapacity returnConsumedCapacity)
returnConsumedCapacity - ReturnConsumedCapacitypublic void setTotalSegments(Integer totalSegments)
For a parallel Scan request, TotalSegments represents the total number of segments into which the Scan operation will be divided. The value of TotalSegments corresponds to the number of application workers that will perform the parallel scan. For example, if you want to use four application threads to scan a table or an index, specify a TotalSegments value of 4.
The value for TotalSegments must be greater than or equal to 1, and less than or equal to 1000000. If you specify a TotalSegments value of 1, the Scan operation will be sequential rather than parallel.
If you specify TotalSegments, you must also specify Segment.
totalSegments - For a parallel Scan request, TotalSegments
represents the total number of segments into which the Scan
operation will be divided. The value of TotalSegments
corresponds to the number of application workers that will perform
the parallel scan. For example, if you want to use four
application threads to scan a table or an index, specify a
TotalSegments value of 4.
The value for TotalSegments must be greater than or equal to 1, and less than or equal to 1000000. If you specify a TotalSegments value of 1, the Scan operation will be sequential rather than parallel.
If you specify TotalSegments, you must also specify Segment.
public Integer getTotalSegments()
For a parallel Scan request, TotalSegments represents the total number of segments into which the Scan operation will be divided. The value of TotalSegments corresponds to the number of application workers that will perform the parallel scan. For example, if you want to use four application threads to scan a table or an index, specify a TotalSegments value of 4.
The value for TotalSegments must be greater than or equal to 1, and less than or equal to 1000000. If you specify a TotalSegments value of 1, the Scan operation will be sequential rather than parallel.
If you specify TotalSegments, you must also specify Segment.
The value for TotalSegments must be greater than or equal to 1, and less than or equal to 1000000. If you specify a TotalSegments value of 1, the Scan operation will be sequential rather than parallel.
If you specify TotalSegments, you must also specify Segment.
public ScanRequest withTotalSegments(Integer totalSegments)
For a parallel Scan request, TotalSegments represents the total number of segments into which the Scan operation will be divided. The value of TotalSegments corresponds to the number of application workers that will perform the parallel scan. For example, if you want to use four application threads to scan a table or an index, specify a TotalSegments value of 4.
The value for TotalSegments must be greater than or equal to 1, and less than or equal to 1000000. If you specify a TotalSegments value of 1, the Scan operation will be sequential rather than parallel.
If you specify TotalSegments, you must also specify Segment.
totalSegments - For a parallel Scan request, TotalSegments
represents the total number of segments into which the Scan
operation will be divided. The value of TotalSegments
corresponds to the number of application workers that will perform
the parallel scan. For example, if you want to use four
application threads to scan a table or an index, specify a
TotalSegments value of 4.
The value for TotalSegments must be greater than or equal to 1, and less than or equal to 1000000. If you specify a TotalSegments value of 1, the Scan operation will be sequential rather than parallel.
If you specify TotalSegments, you must also specify Segment.
public void setSegment(Integer segment)
For a parallel Scan request, Segment identifies an individual segment to be scanned by an application worker.
Segment IDs are zero-based, so the first segment is always 0. For example, if you want to use four application threads to scan a table or an index, then the first thread specifies a Segment value of 0, the second thread specifies 1, and so on.
The value of LastEvaluatedKey returned from a parallel Scan request must be used as ExclusiveStartKey with the same segment ID in a subsequent Scan operation.
The value for Segment must be greater than or equal to 0, and less than the value provided for TotalSegments.
If you provide Segment, you must also provide TotalSegments.
segment - For a parallel Scan request, Segment identifies an
individual segment to be scanned by an application worker.
Segment IDs are zero-based, so the first segment is always 0. For example, if you want to use four application threads to scan a table or an index, then the first thread specifies a Segment value of 0, the second thread specifies 1, and so on.
The value of LastEvaluatedKey returned from a parallel Scan request must be used as ExclusiveStartKey with the same segment ID in a subsequent Scan operation.
The value for Segment must be greater than or equal to 0, and less than the value provided for TotalSegments.
If you provide Segment, you must also provide TotalSegments.
public Integer getSegment()
For a parallel Scan request, Segment identifies an individual segment to be scanned by an application worker.
Segment IDs are zero-based, so the first segment is always 0. For example, if you want to use four application threads to scan a table or an index, then the first thread specifies a Segment value of 0, the second thread specifies 1, and so on.
The value of LastEvaluatedKey returned from a parallel Scan request must be used as ExclusiveStartKey with the same segment ID in a subsequent Scan operation.
The value for Segment must be greater than or equal to 0, and less than the value provided for TotalSegments.
If you provide Segment, you must also provide TotalSegments.
Segment IDs are zero-based, so the first segment is always 0. For example, if you want to use four application threads to scan a table or an index, then the first thread specifies a Segment value of 0, the second thread specifies 1, and so on.
The value of LastEvaluatedKey returned from a parallel Scan request must be used as ExclusiveStartKey with the same segment ID in a subsequent Scan operation.
The value for Segment must be greater than or equal to 0, and less than the value provided for TotalSegments.
If you provide Segment, you must also provide TotalSegments.
public ScanRequest withSegment(Integer segment)
For a parallel Scan request, Segment identifies an individual segment to be scanned by an application worker.
Segment IDs are zero-based, so the first segment is always 0. For example, if you want to use four application threads to scan a table or an index, then the first thread specifies a Segment value of 0, the second thread specifies 1, and so on.
The value of LastEvaluatedKey returned from a parallel Scan request must be used as ExclusiveStartKey with the same segment ID in a subsequent Scan operation.
The value for Segment must be greater than or equal to 0, and less than the value provided for TotalSegments.
If you provide Segment, you must also provide TotalSegments.
segment - For a parallel Scan request, Segment identifies an
individual segment to be scanned by an application worker.
Segment IDs are zero-based, so the first segment is always 0. For example, if you want to use four application threads to scan a table or an index, then the first thread specifies a Segment value of 0, the second thread specifies 1, and so on.
The value of LastEvaluatedKey returned from a parallel Scan request must be used as ExclusiveStartKey with the same segment ID in a subsequent Scan operation.
The value for Segment must be greater than or equal to 0, and less than the value provided for TotalSegments.
If you provide Segment, you must also provide TotalSegments.
public void setProjectionExpression(String projectionExpression)
A string that identifies one or more attributes to retrieve from the specified table or index. 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.
projectionExpression - A string that identifies one or more attributes to retrieve from
the specified table or index. 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.
public String getProjectionExpression()
A string that identifies one or more attributes to retrieve from the specified table or index. 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.
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.
public ScanRequest withProjectionExpression(String projectionExpression)
A string that identifies one or more attributes to retrieve from the specified table or index. 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.
projectionExpression - A string that identifies one or more attributes to retrieve from
the specified table or index. 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.
public void setFilterExpression(String filterExpression)
A string that contains conditions that DynamoDB applies after the Scan 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 ScanFilter and ConditionalOperator parameters.
filterExpression - A string that contains conditions that DynamoDB applies after the
Scan 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 ScanFilter and ConditionalOperator parameters.
public String getFilterExpression()
A string that contains conditions that DynamoDB applies after the Scan 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 ScanFilter and ConditionalOperator parameters.
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 ScanFilter and ConditionalOperator parameters.
public ScanRequest withFilterExpression(String filterExpression)
A string that contains conditions that DynamoDB applies after the Scan 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 ScanFilter and ConditionalOperator parameters.
filterExpression - A string that contains conditions that DynamoDB applies after the
Scan 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 ScanFilter and ConditionalOperator parameters.
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 Accessing Item Attributes in the Amazon DynamoDB Developer Guide.
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 Accessing Item Attributes in the Amazon DynamoDB Developer Guide.
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 Accessing Item Attributes in the Amazon DynamoDB Developer Guide.
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 Accessing Item Attributes in the Amazon DynamoDB Developer Guide.
public ScanRequest 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 Accessing Item Attributes in the Amazon DynamoDB Developer Guide.
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 Accessing Item Attributes in the Amazon DynamoDB Developer Guide.
public ScanRequest addExpressionAttributeNamesEntry(String key, String value)
public ScanRequest clearExpressionAttributeNamesEntries()
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 Specifying Conditions in the Amazon DynamoDB Developer Guide.
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 Specifying Conditions in the Amazon DynamoDB Developer Guide.
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 Specifying Conditions in the Amazon DynamoDB Developer Guide.
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 Specifying Conditions in the Amazon DynamoDB Developer Guide.
public ScanRequest 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 Specifying Conditions in the Amazon DynamoDB Developer Guide.
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 Specifying Conditions in the Amazon DynamoDB Developer Guide.
public ScanRequest addExpressionAttributeValuesEntry(String key, AttributeValue value)
public ScanRequest clearExpressionAttributeValuesEntries()
public void setConsistentRead(Boolean consistentRead)
A Boolean value that determines the read consistency model during the scan:
If ConsistentRead is false, then the data returned
from Scan might not contain the results from other recently
completed write operations (PutItem, UpdateItem or DeleteItem).
If ConsistentRead is true, then all of the write
operations that completed before the Scan began are guaranteed to
be contained in the Scan response.
The default setting for ConsistentRead is false.
The ConsistentRead parameter is not supported on global secondary indexes. If you scan a global secondary index with ConsistentRead set to true, you will receive a ValidationException.
consistentRead - A Boolean value that determines the read consistency model during
the scan:
If ConsistentRead is false, then the data
returned from Scan might not contain the results from other
recently completed write operations (PutItem, UpdateItem or
DeleteItem).
If ConsistentRead is true, then all of the
write operations that completed before the Scan began are
guaranteed to be contained in the Scan response.
The default setting for ConsistentRead is
false.
The ConsistentRead parameter is not supported on global secondary indexes. If you scan a global secondary index with ConsistentRead set to true, you will receive a ValidationException.
public Boolean getConsistentRead()
A Boolean value that determines the read consistency model during the scan:
If ConsistentRead is false, then the data returned
from Scan might not contain the results from other recently
completed write operations (PutItem, UpdateItem or DeleteItem).
If ConsistentRead is true, then all of the write
operations that completed before the Scan began are guaranteed to
be contained in the Scan response.
The default setting for ConsistentRead is false.
The ConsistentRead parameter is not supported on global secondary indexes. If you scan a global secondary index with ConsistentRead set to true, you will receive a ValidationException.
If ConsistentRead is false, then the data
returned from Scan might not contain the results from
other recently completed write operations (PutItem, UpdateItem or
DeleteItem).
If ConsistentRead is true, then all of the
write operations that completed before the Scan began are
guaranteed to be contained in the Scan response.
The default setting for ConsistentRead is
false.
The ConsistentRead parameter is not supported on global secondary indexes. If you scan a global secondary index with ConsistentRead set to true, you will receive a ValidationException.
public ScanRequest withConsistentRead(Boolean consistentRead)
A Boolean value that determines the read consistency model during the scan:
If ConsistentRead is false, then the data returned
from Scan might not contain the results from other recently
completed write operations (PutItem, UpdateItem or DeleteItem).
If ConsistentRead is true, then all of the write
operations that completed before the Scan began are guaranteed to
be contained in the Scan response.
The default setting for ConsistentRead is false.
The ConsistentRead parameter is not supported on global secondary indexes. If you scan a global secondary index with ConsistentRead set to true, you will receive a ValidationException.
consistentRead - A Boolean value that determines the read consistency model during
the scan:
If ConsistentRead is false, then the data
returned from Scan might not contain the results from other
recently completed write operations (PutItem, UpdateItem or
DeleteItem).
If ConsistentRead is true, then all of the
write operations that completed before the Scan began are
guaranteed to be contained in the Scan response.
The default setting for ConsistentRead is
false.
The ConsistentRead parameter is not supported on global secondary indexes. If you scan a global secondary index with ConsistentRead set to true, you will receive a ValidationException.
public Boolean isConsistentRead()
A Boolean value that determines the read consistency model during the scan:
If ConsistentRead is false, then the data returned
from Scan might not contain the results from other recently
completed write operations (PutItem, UpdateItem or DeleteItem).
If ConsistentRead is true, then all of the write
operations that completed before the Scan began are guaranteed to
be contained in the Scan response.
The default setting for ConsistentRead is false.
The ConsistentRead parameter is not supported on global secondary indexes. If you scan a global secondary index with ConsistentRead set to true, you will receive a ValidationException.
If ConsistentRead is false, then the data
returned from Scan might not contain the results from
other recently completed write operations (PutItem, UpdateItem or
DeleteItem).
If ConsistentRead is true, then all of the
write operations that completed before the Scan began are
guaranteed to be contained in the Scan response.
The default setting for ConsistentRead is
false.
The ConsistentRead parameter is not supported on global secondary indexes. If you scan a global secondary index with ConsistentRead set to true, you will receive a ValidationException.
public void setExclusiveStartKey(Map.Entry<String,AttributeValue> hashKey, Map.Entry<String,AttributeValue> rangeKey) throws IllegalArgumentException
The data type for ExclusiveStartKey must be String, Number or Binary. No set data types are allowed.
hashKey - a map entry including the name and value of the primary hash key.rangeKey - a map entry including the name and value of the primary range key,
or null if it is a hash-only table.IllegalArgumentExceptionpublic ScanRequest withExclusiveStartKey(Map.Entry<String,AttributeValue> hashKey, Map.Entry<String,AttributeValue> rangeKey) throws IllegalArgumentException
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.
hashKey - a map entry including the name and value of the primary hash key.rangeKey - a map entry including the name and value of the primary range key,
or null if it is a hash-only table.IllegalArgumentExceptionpublic String toString()
toString in class ObjectObject.toString()public ScanRequest clone()
clone in class AmazonWebServiceRequestCopyright © 2016. All rights reserved.