public class AmazonDynamoDBClient extends AmazonWebServiceClient implements AmazonDynamoDB
Amazon DynamoDB Overview
This is the Amazon DynamoDB API Reference. This guide provides descriptions and samples of the Amazon DynamoDB API.
| Constructor and Description |
|---|
AmazonDynamoDBClient()
Constructs a new client to invoke service methods on
AmazonDynamoDBv2.
|
AmazonDynamoDBClient(AWSCredentials awsCredentials)
Constructs a new client to invoke service methods on
AmazonDynamoDBv2 using the specified AWS account credentials.
|
AmazonDynamoDBClient(AWSCredentials awsCredentials,
ClientConfiguration clientConfiguration)
Constructs a new client to invoke service methods on
AmazonDynamoDBv2 using the specified AWS account credentials
and client configuration options.
|
AmazonDynamoDBClient(AWSCredentialsProvider awsCredentialsProvider)
Constructs a new client to invoke service methods on
AmazonDynamoDBv2 using the specified AWS account credentials provider.
|
AmazonDynamoDBClient(AWSCredentialsProvider awsCredentialsProvider,
ClientConfiguration clientConfiguration)
Constructs a new client to invoke service methods on
AmazonDynamoDBv2 using the specified AWS account credentials
provider and client configuration options.
|
AmazonDynamoDBClient(ClientConfiguration clientConfiguration)
Constructs a new client to invoke service methods on
AmazonDynamoDBv2.
|
| Modifier and Type | Method and Description |
|---|---|
BatchGetItemResult |
batchGetItem(BatchGetItemRequest batchGetItemRequest)
The BatchGetItem operation returns the attributes of one or
more items from one or more tables.
|
BatchGetItemResult |
batchGetItem(Map<String,KeysAndAttributes> requestItems)
The BatchGetItem operation returns the attributes of one or
more items from one or more tables.
|
BatchGetItemResult |
batchGetItem(Map<String,KeysAndAttributes> requestItems,
String returnConsumedCapacity)
The BatchGetItem operation returns the attributes of one or
more items from one or more tables.
|
BatchWriteItemResult |
batchWriteItem(BatchWriteItemRequest batchWriteItemRequest)
The BatchWriteItem operation puts or deletes multiple items in
one or more tables.
|
BatchWriteItemResult |
batchWriteItem(Map<String,List<WriteRequest>> requestItems)
The BatchWriteItem operation puts or deletes multiple items in
one or more tables.
|
CreateTableResult |
createTable(CreateTableRequest createTableRequest)
The CreateTable operation adds a new table to your account.
|
CreateTableResult |
createTable(List<AttributeDefinition> attributeDefinitions,
String tableName,
List<KeySchemaElement> keySchema,
ProvisionedThroughput provisionedThroughput)
The CreateTable operation adds a new table to your account.
|
DeleteItemResult |
deleteItem(DeleteItemRequest deleteItemRequest)
Deletes a single item in a table by primary key.
|
DeleteItemResult |
deleteItem(String tableName,
Map<String,AttributeValue> key)
Deletes a single item in a table by primary key.
|
DeleteItemResult |
deleteItem(String tableName,
Map<String,AttributeValue> key,
String returnValues)
Deletes a single item in a table by primary key.
|
DeleteTableResult |
deleteTable(DeleteTableRequest deleteTableRequest)
The DeleteTable operation deletes a table and all of its items.
|
DeleteTableResult |
deleteTable(String tableName)
The DeleteTable operation deletes a table and all of its items.
|
DescribeTableResult |
describeTable(DescribeTableRequest describeTableRequest)
Returns information about the table, including the current status of
the table, when it was created, the primary key schema, and any
indexes on the table.
|
DescribeTableResult |
describeTable(String tableName)
Returns information about the table, including the current status of
the table, when it was created, the primary key schema, and any
indexes on the table.
|
ResponseMetadata |
getCachedResponseMetadata(AmazonWebServiceRequest request)
Returns additional metadata for a previously executed successful, request, typically used for
debugging issues where a service isn't acting as expected.
|
GetItemResult |
getItem(GetItemRequest getItemRequest)
The GetItem operation returns a set of attributes for the item
with the given primary key.
|
GetItemResult |
getItem(String tableName,
Map<String,AttributeValue> key)
The GetItem operation returns a set of attributes for the item
with the given primary key.
|
GetItemResult |
getItem(String tableName,
Map<String,AttributeValue> key,
Boolean consistentRead)
The GetItem operation returns a set of attributes for the item
with the given primary key.
|
ListTablesResult |
listTables()
Returns an array of all the tables associated with the current account
and endpoint.
|
ListTablesResult |
listTables(Integer limit)
Returns an array of all the tables associated with the current account
and endpoint.
|
ListTablesResult |
listTables(ListTablesRequest listTablesRequest)
Returns an array of all the tables associated with the current account
and endpoint.
|
ListTablesResult |
listTables(String exclusiveStartTableName)
Returns an array of all the tables associated with the current account
and endpoint.
|
ListTablesResult |
listTables(String exclusiveStartTableName,
Integer limit)
Returns an array of all the tables associated with the current account
and endpoint.
|
PutItemResult |
putItem(PutItemRequest putItemRequest)
Creates a new item, or replaces an old item with a new item.
|
PutItemResult |
putItem(String tableName,
Map<String,AttributeValue> item)
Creates a new item, or replaces an old item with a new item.
|
PutItemResult |
putItem(String tableName,
Map<String,AttributeValue> item,
String returnValues)
Creates a new item, or replaces an old item with a new item.
|
QueryResult |
query(QueryRequest queryRequest)
A Query operation directly accesses items from a table using
the table primary key, or from an index using the index key.
|
ScanResult |
scan(ScanRequest scanRequest)
The Scan operation returns one or more items and item
attributes by accessing every item in the table.
|
ScanResult |
scan(String tableName,
List<String> attributesToGet)
The Scan operation returns one or more items and item
attributes by accessing every item in the table.
|
ScanResult |
scan(String tableName,
List<String> attributesToGet,
Map<String,Condition> scanFilter)
The Scan operation returns one or more items and item
attributes by accessing every item in the table.
|
ScanResult |
scan(String tableName,
Map<String,Condition> scanFilter)
The Scan operation returns one or more items and item
attributes by accessing every item in the table.
|
void |
setEndpoint(String endpoint)
Overrides the default endpoint for this client.
|
void |
setEndpoint(String endpoint,
String serviceName,
String regionId)
Overrides the default endpoint for this client ("http://dynamodb.us-east-1.amazonaws.com/") and explicitly provides
an AWS region ID and AWS service name to use when the client calculates a signature
for requests.
|
UpdateItemResult |
updateItem(String tableName,
Map<String,AttributeValue> key,
Map<String,AttributeValueUpdate> attributeUpdates)
Edits an existing item's attributes, or inserts a new item if it does
not already exist.
|
UpdateItemResult |
updateItem(String tableName,
Map<String,AttributeValue> key,
Map<String,AttributeValueUpdate> attributeUpdates,
String returnValues)
Edits an existing item's attributes, or inserts a new item if it does
not already exist.
|
UpdateItemResult |
updateItem(UpdateItemRequest updateItemRequest)
Edits an existing item's attributes, or inserts a new item if it does
not already exist.
|
UpdateTableResult |
updateTable(String tableName,
ProvisionedThroughput provisionedThroughput)
Updates the provisioned throughput for the given table.
|
UpdateTableResult |
updateTable(UpdateTableRequest updateTableRequest)
Updates the provisioned throughput for the given table.
|
addRequestHandler, addRequestHandler, getRequestMetricsCollector, getServiceName, getTimeOffset, removeRequestHandler, removeRequestHandler, setConfiguration, setRegion, setTimeOffset, shutdown, withTimeOffsetequals, getClass, hashCode, notify, notifyAll, toString, wait, wait, waitsetRegion, shutdownpublic AmazonDynamoDBClient()
All service calls made using this new client object are blocking, and will not return until the service call completes.
DefaultAWSCredentialsProviderChainpublic AmazonDynamoDBClient(ClientConfiguration clientConfiguration)
All service calls made using this new client object are blocking, and will not return until the service call completes.
clientConfiguration - The client configuration options controlling how this
client connects to AmazonDynamoDBv2
(ex: proxy settings, retry counts, etc.).DefaultAWSCredentialsProviderChainpublic AmazonDynamoDBClient(AWSCredentials awsCredentials)
All service calls made using this new client object are blocking, and will not return until the service call completes.
awsCredentials - The AWS credentials (access key ID and secret key) to use
when authenticating with AWS services.public AmazonDynamoDBClient(AWSCredentials awsCredentials, ClientConfiguration clientConfiguration)
All service calls made using this new client object are blocking, and will not return until the service call completes.
awsCredentials - The AWS credentials (access key ID and secret key) to use
when authenticating with AWS services.clientConfiguration - The client configuration options controlling how this
client connects to AmazonDynamoDBv2
(ex: proxy settings, retry counts, etc.).public AmazonDynamoDBClient(AWSCredentialsProvider awsCredentialsProvider)
All service calls made using this new client object are blocking, and will not return until the service call completes.
awsCredentialsProvider - The AWS credentials provider which will provide credentials
to authenticate requests with AWS services.public AmazonDynamoDBClient(AWSCredentialsProvider awsCredentialsProvider, ClientConfiguration clientConfiguration)
All service calls made using this new client object are blocking, and will not return until the service call completes.
awsCredentialsProvider - The AWS credentials provider which will provide credentials
to authenticate requests with AWS services.clientConfiguration - The client configuration options controlling how this
client connects to AmazonDynamoDBv2
(ex: proxy settings, retry counts, etc.).public ScanResult scan(ScanRequest scanRequest)
The Scan operation returns one or more items and item attributes by accessing every item in the table. To have Amazon DynamoDB return fewer items, you can provide a ScanFilter .
If the total number of scanned items exceeds the maximum data set size limit of 1 MB, the scan stops and results are returned to the user with a LastEvaluatedKey to continue the scan in a subsequent operation. The results also include the number of items exceeding the limit. A scan can result in no table data meeting the filter criteria.
The result set is eventually consistent.
By default, Scan operations proceed sequentially; however, for faster performance on large tables, applications can request a parallel Scan by specifying the Segment and TotalSegments parameters. For more information, see Parallel Scan in the Amazon DynamoDB Developer Guide.
scan in interface AmazonDynamoDBscanRequest - Container for the necessary parameters to execute
the Scan service method on AmazonDynamoDBv2.ResourceNotFoundExceptionProvisionedThroughputExceededExceptionInternalServerErrorExceptionAmazonClientException - If any internal errors are encountered inside the client while
attempting to make the request or handle the response. For example
if a network connection is not available.AmazonServiceException - If an error response is returned by AmazonDynamoDBv2 indicating
either a problem with the data in the request, or a server side issue.public UpdateTableResult updateTable(UpdateTableRequest updateTableRequest)
Updates the provisioned throughput for the given table. Setting the throughput for a table helps you manage performance and is part of the provisioned throughput feature of Amazon DynamoDB.
The provisioned throughput values can be upgraded or downgraded based on the maximums and minimums listed in the Limits section in the Amazon DynamoDB Developer Guide.
The table must be in the ACTIVE state for this operation
to succeed. UpdateTable is an asynchronous operation; while
executing the operation, the table is in the UPDATING
state. While the table is in the UPDATING state, the
table still has the provisioned throughput from before the call. The
new provisioned throughput setting is in effect only when the table
returns to the ACTIVE state after the UpdateTable
operation.
You cannot add, modify or delete local secondary indexes using UpdateTable . Local secondary indexes can only be defined at table creation time.
updateTable in interface AmazonDynamoDBupdateTableRequest - Container for the necessary parameters to
execute the UpdateTable service method on AmazonDynamoDBv2.ResourceInUseExceptionResourceNotFoundExceptionLimitExceededExceptionInternalServerErrorExceptionAmazonClientException - If any internal errors are encountered inside the client while
attempting to make the request or handle the response. For example
if a network connection is not available.AmazonServiceException - If an error response is returned by AmazonDynamoDBv2 indicating
either a problem with the data in the request, or a server side issue.public DeleteTableResult deleteTable(DeleteTableRequest deleteTableRequest)
The DeleteTable operation deletes a table and all of its items.
After a DeleteTable request, the specified table is in the
DELETING state until Amazon DynamoDB completes the
deletion. If the table is in the ACTIVE state, you can
delete it. If a table is in CREATING or
UPDATING states, then Amazon DynamoDB returns a
ResourceInUseException . If the specified
table does not exist, Amazon DynamoDB returns a
ResourceNotFoundException . If table is already in the
DELETING state, no error is returned.
NOTE: Amazon DynamoDB might continue to accept data read and write operations, such as GetItem and PutItem, on a table in the DELETING state until the table deletion is complete.
When you delete a table, any local secondary indexes on that table are also deleted.
Use the DescribeTable API to check the status of the table.
deleteTable in interface AmazonDynamoDBdeleteTableRequest - Container for the necessary parameters to
execute the DeleteTable service method on AmazonDynamoDBv2.ResourceInUseExceptionResourceNotFoundExceptionLimitExceededExceptionInternalServerErrorExceptionAmazonClientException - If any internal errors are encountered inside the client while
attempting to make the request or handle the response. For example
if a network connection is not available.AmazonServiceException - If an error response is returned by AmazonDynamoDBv2 indicating
either a problem with the data in the request, or a server side issue.public BatchWriteItemResult batchWriteItem(BatchWriteItemRequest batchWriteItemRequest)
The BatchWriteItem operation puts or deletes multiple items in one or more tables. A single call to BatchWriteItem can write up to 1 MB of data, which can comprise as many as 25 put or delete requests. Individual items to be written can be as large as 64 KB.
NOTE: BatchWriteItem cannot update items. To update items, use the UpdateItem API.
The individual PutItem and DeleteItem operations specified in BatchWriteItem are atomic; however BatchWriteItem as a whole is not. If any requested operations fail because the table's provisioned throughput is exceeded or an internal processing failure occurs, the failed operations are returned in the UnprocessedItems response parameter. You can investigate and optionally resend the requests. Typically, you would call BatchWriteItem in a loop. Each iteration would check for unprocessed items and submit a new BatchWriteItem request with those unprocessed items until all items have been processed.
To write one item, you can use the PutItem operation; to delete one item, you can use the DeleteItem operation.
With BatchWriteItem , you can efficiently write or delete large amounts of data, such as from Amazon Elastic MapReduce (EMR), or copy data from another database into Amazon DynamoDB. In order to improve performance with these large-scale operations, BatchWriteItem does not behave in the same way as individual PutItem and DeleteItem calls would For example, you cannot specify conditions on individual put and delete requests, and BatchWriteItem does not return deleted items in the response.
If you use a programming language that supports concurrency, such as Java, you can use threads to write items in parallel. Your application must include the necessary logic to manage the threads.
With languages that don't support threading, such as PHP, BatchWriteItem will write or delete the specified items one at a time. In both situations, BatchWriteItem provides an alternative where the API performs the specified put and delete operations in parallel, giving you the power of the thread pool approach without having to introduce complexity into your application.
Parallel processing reduces latency, but each specified put and delete request consumes the same number of write capacity units whether it is processed in parallel or not. Delete operations on nonexistent items consume one write capacity unit.
If one or more of the following is true, Amazon DynamoDB rejects the entire batch write operation:
One or more tables specified in the BatchWriteItem request does not exist.
Primary key attributes specified on an item in the request do not match those in the corresponding table's primary key schema.
You try to perform multiple operations on the same item in the same BatchWriteItem request. For example, you cannot put and delete the same item in the same BatchWriteItem request.
The total request size exceeds 1 MB.
Any individual item in a batch exceeds 64 KB.
batchWriteItem in interface AmazonDynamoDBbatchWriteItemRequest - Container for the necessary parameters to
execute the BatchWriteItem service method on AmazonDynamoDBv2.ItemCollectionSizeLimitExceededExceptionResourceNotFoundExceptionProvisionedThroughputExceededExceptionInternalServerErrorExceptionAmazonClientException - If any internal errors are encountered inside the client while
attempting to make the request or handle the response. For example
if a network connection is not available.AmazonServiceException - If an error response is returned by AmazonDynamoDBv2 indicating
either a problem with the data in the request, or a server side issue.public DescribeTableResult describeTable(DescribeTableRequest describeTableRequest)
Returns information about the table, including the current status of the table, when it was created, the primary key schema, and any indexes on the table.
describeTable in interface AmazonDynamoDBdescribeTableRequest - Container for the necessary parameters to
execute the DescribeTable service method on AmazonDynamoDBv2.ResourceNotFoundExceptionInternalServerErrorExceptionAmazonClientException - If any internal errors are encountered inside the client while
attempting to make the request or handle the response. For example
if a network connection is not available.AmazonServiceException - If an error response is returned by AmazonDynamoDBv2 indicating
either a problem with the data in the request, or a server side issue.public GetItemResult getItem(GetItemRequest getItemRequest)
The GetItem operation returns a set of attributes for the item with the given primary key. If there is no matching item, GetItem does not return any data.
GetItem provides an eventually consistent read by default. If
your application requires a strongly consistent read, set
ConsistentRead to true . Although a strongly
consistent read might take more time than an eventually consistent
read, it always returns the last updated value.
getItem in interface AmazonDynamoDBgetItemRequest - Container for the necessary parameters to
execute the GetItem service method on AmazonDynamoDBv2.ResourceNotFoundExceptionProvisionedThroughputExceededExceptionInternalServerErrorExceptionAmazonClientException - If any internal errors are encountered inside the client while
attempting to make the request or handle the response. For example
if a network connection is not available.AmazonServiceException - If an error response is returned by AmazonDynamoDBv2 indicating
either a problem with the data in the request, or a server side issue.public DeleteItemResult deleteItem(DeleteItemRequest deleteItemRequest)
Deletes a single item in a table by primary key. You can perform a conditional delete operation that deletes the item if it exists, or if it has an expected attribute value.
In addition to deleting an item, you can also return the item's attribute values in the same operation, using the ReturnValues parameter.
Unless you specify conditions, the DeleteItem is an idempotent operation; running it multiple times on the same item or attribute does not result in an error response.
Conditional deletes are useful for only deleting items if specific conditions are met. If those conditions are met, Amazon DynamoDB performs the delete. Otherwise, the item is not deleted.
deleteItem in interface AmazonDynamoDBdeleteItemRequest - Container for the necessary parameters to
execute the DeleteItem service method on AmazonDynamoDBv2.ItemCollectionSizeLimitExceededExceptionResourceNotFoundExceptionConditionalCheckFailedExceptionProvisionedThroughputExceededExceptionInternalServerErrorExceptionAmazonClientException - If any internal errors are encountered inside the client while
attempting to make the request or handle the response. For example
if a network connection is not available.AmazonServiceException - If an error response is returned by AmazonDynamoDBv2 indicating
either a problem with the data in the request, or a server side issue.public CreateTableResult createTable(CreateTableRequest createTableRequest)
The CreateTable operation adds a new table to your account. In an AWS account, table names must be unique within each region. That is, you can have two tables with same name if you create the tables in different regions.
CreateTable is an asynchronous operation. Upon receiving a
CreateTable request, Amazon DynamoDB immediately returns a
response with a TableStatus of CREATING . After
the table is created, Amazon DynamoDB sets the TableStatus to
ACTIVE . You can perform read and write operations only
on an ACTIVE table.
If you want to create multiple tables with local secondary indexes on
them, you must create them sequentially. Only one table with local
secondary indexes can be in the CREATING state at any
given time.
You can use the DescribeTable API to check the table status.
createTable in interface AmazonDynamoDBcreateTableRequest - Container for the necessary parameters to
execute the CreateTable service method on AmazonDynamoDBv2.ResourceInUseExceptionLimitExceededExceptionInternalServerErrorExceptionAmazonClientException - If any internal errors are encountered inside the client while
attempting to make the request or handle the response. For example
if a network connection is not available.AmazonServiceException - If an error response is returned by AmazonDynamoDBv2 indicating
either a problem with the data in the request, or a server side issue.public QueryResult query(QueryRequest queryRequest)
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 .
To request a strongly consistent result, set ConsistentRead to true.
query in interface AmazonDynamoDBqueryRequest - Container for the necessary parameters to execute
the Query service method on AmazonDynamoDBv2.ResourceNotFoundExceptionProvisionedThroughputExceededExceptionInternalServerErrorExceptionAmazonClientException - If any internal errors are encountered inside the client while
attempting to make the request or handle the response. For example
if a network connection is not available.AmazonServiceException - If an error response is returned by AmazonDynamoDBv2 indicating
either a problem with the data in the request, or a server side issue.public PutItemResult putItem(PutItemRequest putItemRequest)
Creates a new item, or replaces an old item with a new item. If an item already exists in the specified table with the same primary key, the new item completely replaces the existing item. You can perform a conditional put (insert a new item if one with the specified primary key doesn't exist), or replace an existing item if it has certain attribute values.
In addition to putting an item, you can also return the item's attribute values in the same operation, using the ReturnValues parameter.
When you add an item, the primary key attribute(s) are the only required attributes. Attribute values cannot be null. String and binary type attributes must have lengths greater than zero. Set type attributes cannot be empty. Requests with empty values will be rejected with a ValidationException .
You can request that PutItem return either a copy of the old item (before the update) or a copy of the new item (after the update). For more information, see the ReturnValues description.
NOTE: To prevent a new item from replacing an existing item, use a conditional put operation with Exists set to false for the primary key attribute, or attributes.
For more information about using this API, see Working with Items in the Amazon DynamoDB Developer Guide.
putItem in interface AmazonDynamoDBputItemRequest - Container for the necessary parameters to
execute the PutItem service method on AmazonDynamoDBv2.ItemCollectionSizeLimitExceededExceptionResourceNotFoundExceptionConditionalCheckFailedExceptionProvisionedThroughputExceededExceptionInternalServerErrorExceptionAmazonClientException - If any internal errors are encountered inside the client while
attempting to make the request or handle the response. For example
if a network connection is not available.AmazonServiceException - If an error response is returned by AmazonDynamoDBv2 indicating
either a problem with the data in the request, or a server side issue.public ListTablesResult listTables(ListTablesRequest listTablesRequest)
Returns an array of all the tables associated with the current account and endpoint.
listTables in interface AmazonDynamoDBlistTablesRequest - Container for the necessary parameters to
execute the ListTables service method on AmazonDynamoDBv2.InternalServerErrorExceptionAmazonClientException - If any internal errors are encountered inside the client while
attempting to make the request or handle the response. For example
if a network connection is not available.AmazonServiceException - If an error response is returned by AmazonDynamoDBv2 indicating
either a problem with the data in the request, or a server side issue.public UpdateItemResult updateItem(UpdateItemRequest updateItemRequest)
Edits an existing item's attributes, or inserts a new item if it does not already exist. You can put, delete, or add attribute values. You can also perform a conditional update (insert a new attribute name-value pair if it doesn't exist, or replace an existing name-value pair if it has certain expected attribute values).
In addition to updating an item, you can also return the item's attribute values in the same operation, using the ReturnValues parameter.
updateItem in interface AmazonDynamoDBupdateItemRequest - Container for the necessary parameters to
execute the UpdateItem service method on AmazonDynamoDBv2.ItemCollectionSizeLimitExceededExceptionResourceNotFoundExceptionConditionalCheckFailedExceptionProvisionedThroughputExceededExceptionInternalServerErrorExceptionAmazonClientException - If any internal errors are encountered inside the client while
attempting to make the request or handle the response. For example
if a network connection is not available.AmazonServiceException - If an error response is returned by AmazonDynamoDBv2 indicating
either a problem with the data in the request, or a server side issue.public BatchGetItemResult batchGetItem(BatchGetItemRequest batchGetItemRequest)
The BatchGetItem operation returns the attributes of one or more items from one or more tables. You identify requested items by primary key.
A single operation can retrieve up to 1 MB of data, which can comprise as many as 100 items. BatchGetItem will return a partial result if the response size limit is exceeded, the table's provisioned throughput is exceeded, or an internal processing failure occurs. If a partial result is returned, the operation returns a value for UnprocessedKeys . You can use this value to retry the operation starting with the next item to get.
For example, if you ask to retrieve 100 items, but each individual item is 50 KB in size, the system returns 20 items (1 MB) and an appropriate UnprocessedKeys value so you can get the next page of results. If desired, your application can include its own logic to assemble the pages of results into one dataset.
If no items can be processed because of insufficient provisioned throughput on each of the tables involved in the request, BatchGetItem throws ProvisionedThroughputExceededException .
By default, BatchGetItem performs eventually consistent reads
on every table in the request. If you want strongly consistent reads
instead, you can set ConsistentRead to true for
any or all tables.
In order to minimize response latency, BatchGetItem fetches items in parallel.
When designing your application, keep in mind that Amazon DynamoDB does not return attributes in any particular order. To help parse the response by item, include the primary key values for the items in your request in the AttributesToGet parameter.
If a requested item does not exist, it is not returned in the result. Requests for nonexistent items consume the minimum read capacity units according to the type of read. For more information, see Capacity Units Calculations in the Amazon DynamoDB Developer Guide.
batchGetItem in interface AmazonDynamoDBbatchGetItemRequest - Container for the necessary parameters to
execute the BatchGetItem service method on AmazonDynamoDBv2.ResourceNotFoundExceptionProvisionedThroughputExceededExceptionInternalServerErrorExceptionAmazonClientException - If any internal errors are encountered inside the client while
attempting to make the request or handle the response. For example
if a network connection is not available.AmazonServiceException - If an error response is returned by AmazonDynamoDBv2 indicating
either a problem with the data in the request, or a server side issue.public ListTablesResult listTables() throws AmazonServiceException, AmazonClientException
Returns an array of all the tables associated with the current account and endpoint.
listTables in interface AmazonDynamoDBInternalServerErrorExceptionAmazonClientException - If any internal errors are encountered inside the client while
attempting to make the request or handle the response. For example
if a network connection is not available.AmazonServiceException - If an error response is returned by AmazonDynamoDBv2 indicating
either a problem with the data in the request, or a server side issue.public ScanResult scan(String tableName, List<String> attributesToGet) throws AmazonServiceException, AmazonClientException
The Scan operation returns one or more items and item attributes by accessing every item in the table. To have Amazon DynamoDB return fewer items, you can provide a ScanFilter .
If the total number of scanned items exceeds the maximum data set size limit of 1 MB, the scan stops and results are returned to the user with a LastEvaluatedKey to continue the scan in a subsequent operation. The results also include the number of items exceeding the limit. A scan can result in no table data meeting the filter criteria.
The result set is eventually consistent.
By default, Scan operations proceed sequentially; however, for faster performance on large tables, applications can request a parallel Scan by specifying the Segment and TotalSegments parameters. For more information, see Parallel Scan in the Amazon DynamoDB Developer Guide.
scan in interface AmazonDynamoDBtableName - The name of the table containing the requested items.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.ResourceNotFoundExceptionProvisionedThroughputExceededExceptionInternalServerErrorExceptionAmazonClientException - If any internal errors are encountered inside the client while
attempting to make the request or handle the response. For example
if a network connection is not available.AmazonServiceException - If an error response is returned by AmazonDynamoDBv2 indicating
either a problem with the data in the request, or a server side issue.public ScanResult scan(String tableName, Map<String,Condition> scanFilter) throws AmazonServiceException, AmazonClientException
The Scan operation returns one or more items and item attributes by accessing every item in the table. To have Amazon DynamoDB return fewer items, you can provide a ScanFilter .
If the total number of scanned items exceeds the maximum data set size limit of 1 MB, the scan stops and results are returned to the user with a LastEvaluatedKey to continue the scan in a subsequent operation. The results also include the number of items exceeding the limit. A scan can result in no table data meeting the filter criteria.
The result set is eventually consistent.
By default, Scan operations proceed sequentially; however, for faster performance on large tables, applications can request a parallel Scan by specifying the Segment and TotalSegments parameters. For more information, see Parallel Scan in the Amazon DynamoDB Developer Guide.
scan in interface AmazonDynamoDBtableName - The name of the table containing the requested items.scanFilter - Evaluates the scan results and returns only the
desired values. Multiple conditions are treated as "AND" operations:
all conditions must be met to be included in the results. Each ScanConditions element consists of an attribute name to compare, along with the following:
AttributeValueList - One or more values to evaluate
against the supplied attribute. This list contains exactly one value,
except for a 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, For Binary, Amazon DynamoDB treats each byte of the binary data as
unsigned when it compares binary values, for example when evaluating
query expressions. BETWEEN or IN comparison, in
which case the list contains two values. 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.
ComparisonOperator - A comparator for evaluating attributes. For example, equals, greater than, less than, etc.
Valid comparison operators for Scan:
EQ | NE | LE | LT | GE | GT | NOT_NULL | NULL | CONTAINS |
NOT_CONTAINS | BEGINS_WITH | IN | BETWEEN
For information on specifying data types in JSON, see JSON Data Format in the Amazon DynamoDB Developer Guide.
The following are descriptions of each comparison operator.
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"]}.
NE
: Not 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"]}.
NOT_NULL : The
attribute exists.
NULL : The attribute does
not exist.
CONTAINS : checks for a
subsequence, or value in a set.
AttributeValueList can contain only one AttributeValue of type String, Number, or Binary (not a set). If the target attribute of the comparison is a String, then the operation checks for a substring match. If the target attribute of the comparison is Binary, then the operation looks for a subsequence of the target that matches the input. If the target attribute of the comparison is a set ("SS", "NS", or "BS"), then the operation checks for a member of the set (not as a substring).
NOT_CONTAINS : checks for absence of a
subsequence, or absence of a value in a set.
AttributeValueList can contain only one AttributeValue of type String, Number, or Binary (not a set). If the target attribute of the comparison is a String, then the operation checks for the absence of a substring match. If the target attribute of the comparison is Binary, then the operation checks for the absence of a subsequence of the target that matches the input. If the target attribute of the comparison is a set ("SS", "NS", or "BS"), then the operation checks for the absence of a member of the set (not as a substring).
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).
IN :
checks for exact matches.
AttributeValueList can contain more than one AttributeValue of type String, Number, or Binary (not a set). The target attribute of the comparison must be of the same type and exact value to match. A String never matches a String 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"]}
ResourceNotFoundExceptionProvisionedThroughputExceededExceptionInternalServerErrorExceptionAmazonClientException - If any internal errors are encountered inside the client while
attempting to make the request or handle the response. For example
if a network connection is not available.AmazonServiceException - If an error response is returned by AmazonDynamoDBv2 indicating
either a problem with the data in the request, or a server side issue.public ScanResult scan(String tableName, List<String> attributesToGet, Map<String,Condition> scanFilter) throws AmazonServiceException, AmazonClientException
The Scan operation returns one or more items and item attributes by accessing every item in the table. To have Amazon DynamoDB return fewer items, you can provide a ScanFilter .
If the total number of scanned items exceeds the maximum data set size limit of 1 MB, the scan stops and results are returned to the user with a LastEvaluatedKey to continue the scan in a subsequent operation. The results also include the number of items exceeding the limit. A scan can result in no table data meeting the filter criteria.
The result set is eventually consistent.
By default, Scan operations proceed sequentially; however, for faster performance on large tables, applications can request a parallel Scan by specifying the Segment and TotalSegments parameters. For more information, see Parallel Scan in the Amazon DynamoDB Developer Guide.
scan in interface AmazonDynamoDBtableName - The name of the table containing the requested items.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.scanFilter - Evaluates the scan results and returns only the
desired values. Multiple conditions are treated as "AND" operations:
all conditions must be met to be included in the results. Each ScanConditions element consists of an attribute name to compare, along with the following:
AttributeValueList - One or more values to evaluate
against the supplied attribute. This list contains exactly one value,
except for a 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, For Binary, Amazon DynamoDB treats each byte of the binary data as
unsigned when it compares binary values, for example when evaluating
query expressions. BETWEEN or IN comparison, in
which case the list contains two values. 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.
ComparisonOperator - A comparator for evaluating attributes. For example, equals, greater than, less than, etc.
Valid comparison operators for Scan:
EQ | NE | LE | LT | GE | GT | NOT_NULL | NULL | CONTAINS |
NOT_CONTAINS | BEGINS_WITH | IN | BETWEEN
For information on specifying data types in JSON, see JSON Data Format in the Amazon DynamoDB Developer Guide.
The following are descriptions of each comparison operator.
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"]}.
NE
: Not 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"]}.
NOT_NULL : The
attribute exists.
NULL : The attribute does
not exist.
CONTAINS : checks for a
subsequence, or value in a set.
AttributeValueList can contain only one AttributeValue of type String, Number, or Binary (not a set). If the target attribute of the comparison is a String, then the operation checks for a substring match. If the target attribute of the comparison is Binary, then the operation looks for a subsequence of the target that matches the input. If the target attribute of the comparison is a set ("SS", "NS", or "BS"), then the operation checks for a member of the set (not as a substring).
NOT_CONTAINS : checks for absence of a
subsequence, or absence of a value in a set.
AttributeValueList can contain only one AttributeValue of type String, Number, or Binary (not a set). If the target attribute of the comparison is a String, then the operation checks for the absence of a substring match. If the target attribute of the comparison is Binary, then the operation checks for the absence of a subsequence of the target that matches the input. If the target attribute of the comparison is a set ("SS", "NS", or "BS"), then the operation checks for the absence of a member of the set (not as a substring).
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).
IN :
checks for exact matches.
AttributeValueList can contain more than one AttributeValue of type String, Number, or Binary (not a set). The target attribute of the comparison must be of the same type and exact value to match. A String never matches a String 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"]}
ResourceNotFoundExceptionProvisionedThroughputExceededExceptionInternalServerErrorExceptionAmazonClientException - If any internal errors are encountered inside the client while
attempting to make the request or handle the response. For example
if a network connection is not available.AmazonServiceException - If an error response is returned by AmazonDynamoDBv2 indicating
either a problem with the data in the request, or a server side issue.public UpdateTableResult updateTable(String tableName, ProvisionedThroughput provisionedThroughput) throws AmazonServiceException, AmazonClientException
Updates the provisioned throughput for the given table. Setting the throughput for a table helps you manage performance and is part of the provisioned throughput feature of Amazon DynamoDB.
The provisioned throughput values can be upgraded or downgraded based on the maximums and minimums listed in the Limits section in the Amazon DynamoDB Developer Guide.
The table must be in the ACTIVE state for this operation
to succeed. UpdateTable is an asynchronous operation; while
executing the operation, the table is in the UPDATING
state. While the table is in the UPDATING state, the
table still has the provisioned throughput from before the call. The
new provisioned throughput setting is in effect only when the table
returns to the ACTIVE state after the UpdateTable
operation.
You cannot add, modify or delete local secondary indexes using UpdateTable . Local secondary indexes can only be defined at table creation time.
updateTable in interface AmazonDynamoDBtableName - The name of the table to be updated.provisionedThroughput - The provisioned throughput settings for
the specified table. The settings can be modified using the
UpdateTable operation. For current minimum and maximum provisioned throughput values, see Limits in the Amazon DynamoDB Developer Guide.
ResourceInUseExceptionResourceNotFoundExceptionLimitExceededExceptionInternalServerErrorExceptionAmazonClientException - If any internal errors are encountered inside the client while
attempting to make the request or handle the response. For example
if a network connection is not available.AmazonServiceException - If an error response is returned by AmazonDynamoDBv2 indicating
either a problem with the data in the request, or a server side issue.public DeleteTableResult deleteTable(String tableName) throws AmazonServiceException, AmazonClientException
The DeleteTable operation deletes a table and all of its items.
After a DeleteTable request, the specified table is in the
DELETING state until Amazon DynamoDB completes the
deletion. If the table is in the ACTIVE state, you can
delete it. If a table is in CREATING or
UPDATING states, then Amazon DynamoDB returns a
ResourceInUseException . If the specified
table does not exist, Amazon DynamoDB returns a
ResourceNotFoundException . If table is already in the
DELETING state, no error is returned.
NOTE: Amazon DynamoDB might continue to accept data read and write operations, such as GetItem and PutItem, on a table in the DELETING state until the table deletion is complete.
When you delete a table, any local secondary indexes on that table are also deleted.
Use the DescribeTable API to check the status of the table.
deleteTable in interface AmazonDynamoDBtableName - The name of the table to delete.ResourceInUseExceptionResourceNotFoundExceptionLimitExceededExceptionInternalServerErrorExceptionAmazonClientException - If any internal errors are encountered inside the client while
attempting to make the request or handle the response. For example
if a network connection is not available.AmazonServiceException - If an error response is returned by AmazonDynamoDBv2 indicating
either a problem with the data in the request, or a server side issue.public BatchWriteItemResult batchWriteItem(Map<String,List<WriteRequest>> requestItems) throws AmazonServiceException, AmazonClientException
The BatchWriteItem operation puts or deletes multiple items in one or more tables. A single call to BatchWriteItem can write up to 1 MB of data, which can comprise as many as 25 put or delete requests. Individual items to be written can be as large as 64 KB.
NOTE: BatchWriteItem cannot update items. To update items, use the UpdateItem API.
The individual PutItem and DeleteItem operations specified in BatchWriteItem are atomic; however BatchWriteItem as a whole is not. If any requested operations fail because the table's provisioned throughput is exceeded or an internal processing failure occurs, the failed operations are returned in the UnprocessedItems response parameter. You can investigate and optionally resend the requests. Typically, you would call BatchWriteItem in a loop. Each iteration would check for unprocessed items and submit a new BatchWriteItem request with those unprocessed items until all items have been processed.
To write one item, you can use the PutItem operation; to delete one item, you can use the DeleteItem operation.
With BatchWriteItem , you can efficiently write or delete large amounts of data, such as from Amazon Elastic MapReduce (EMR), or copy data from another database into Amazon DynamoDB. In order to improve performance with these large-scale operations, BatchWriteItem does not behave in the same way as individual PutItem and DeleteItem calls would For example, you cannot specify conditions on individual put and delete requests, and BatchWriteItem does not return deleted items in the response.
If you use a programming language that supports concurrency, such as Java, you can use threads to write items in parallel. Your application must include the necessary logic to manage the threads.
With languages that don't support threading, such as PHP, BatchWriteItem will write or delete the specified items one at a time. In both situations, BatchWriteItem provides an alternative where the API performs the specified put and delete operations in parallel, giving you the power of the thread pool approach without having to introduce complexity into your application.
Parallel processing reduces latency, but each specified put and delete request consumes the same number of write capacity units whether it is processed in parallel or not. Delete operations on nonexistent items consume one write capacity unit.
If one or more of the following is true, Amazon DynamoDB rejects the entire batch write operation:
One or more tables specified in the BatchWriteItem request does not exist.
Primary key attributes specified on an item in the request do not match those in the corresponding table's primary key schema.
You try to perform multiple operations on the same item in the same BatchWriteItem request. For example, you cannot put and delete the same item in the same BatchWriteItem request.
The total request size exceeds 1 MB.
Any individual item in a batch exceeds 64 KB.
batchWriteItem in interface AmazonDynamoDBrequestItems - A map of one or more table names and, for each
table, a list of operations to be performed (DeleteRequest or
PutRequest). Each element in the map consists of the following:
DeleteRequest - Perform a DeleteItem operation on the specified item. The item to be deleted is identified by a Key subelement:
Key - A map of primary key attribute values that uniquely identify the item. Each entry in this map consists of an attribute name and an attribute value.
PutRequest - Perform a PutItem operation on the specified item. The item to be put is identified by an Item subelement:
Item - A map of attributes and their values. Each entry in this map consists of an attribute name and an attribute value. Attribute values must not be null; string and binary type attributes must have lengths greater than zero; and set type attributes must not be empty. Requests that contain empty values will be rejected with a ValidationException.
If you specify any attributes that are part of an index key, then the data types for those attributes must match those of the schema in the table's attribute definition.
ItemCollectionSizeLimitExceededExceptionResourceNotFoundExceptionProvisionedThroughputExceededExceptionInternalServerErrorExceptionAmazonClientException - If any internal errors are encountered inside the client while
attempting to make the request or handle the response. For example
if a network connection is not available.AmazonServiceException - If an error response is returned by AmazonDynamoDBv2 indicating
either a problem with the data in the request, or a server side issue.public DescribeTableResult describeTable(String tableName) throws AmazonServiceException, AmazonClientException
Returns information about the table, including the current status of the table, when it was created, the primary key schema, and any indexes on the table.
describeTable in interface AmazonDynamoDBtableName - The name of the table to describe.ResourceNotFoundExceptionInternalServerErrorExceptionAmazonClientException - If any internal errors are encountered inside the client while
attempting to make the request or handle the response. For example
if a network connection is not available.AmazonServiceException - If an error response is returned by AmazonDynamoDBv2 indicating
either a problem with the data in the request, or a server side issue.public GetItemResult getItem(String tableName, Map<String,AttributeValue> key) throws AmazonServiceException, AmazonClientException
The GetItem operation returns a set of attributes for the item with the given primary key. If there is no matching item, GetItem does not return any data.
GetItem provides an eventually consistent read by default. If
your application requires a strongly consistent read, set
ConsistentRead to true . Although a strongly
consistent read might take more time than an eventually consistent
read, it always returns the last updated value.
getItem in interface AmazonDynamoDBtableName - The name of the table containing the requested item.key - A map of attribute names to AttributeValue objects,
representing the primary key of the item to retrieve.ResourceNotFoundExceptionProvisionedThroughputExceededExceptionInternalServerErrorExceptionAmazonClientException - If any internal errors are encountered inside the client while
attempting to make the request or handle the response. For example
if a network connection is not available.AmazonServiceException - If an error response is returned by AmazonDynamoDBv2 indicating
either a problem with the data in the request, or a server side issue.public GetItemResult getItem(String tableName, Map<String,AttributeValue> key, Boolean consistentRead) throws AmazonServiceException, AmazonClientException
The GetItem operation returns a set of attributes for the item with the given primary key. If there is no matching item, GetItem does not return any data.
GetItem provides an eventually consistent read by default. If
your application requires a strongly consistent read, set
ConsistentRead to true . Although a strongly
consistent read might take more time than an eventually consistent
read, it always returns the last updated value.
getItem in interface AmazonDynamoDBtableName - The name of the table containing the requested item.key - A map of attribute names to AttributeValue objects,
representing the primary key of the item to retrieve.consistentRead - If set to true, then the operation
uses strongly consistent reads; otherwise, eventually consistent reads
are used.ResourceNotFoundExceptionProvisionedThroughputExceededExceptionInternalServerErrorExceptionAmazonClientException - If any internal errors are encountered inside the client while
attempting to make the request or handle the response. For example
if a network connection is not available.AmazonServiceException - If an error response is returned by AmazonDynamoDBv2 indicating
either a problem with the data in the request, or a server side issue.public DeleteItemResult deleteItem(String tableName, Map<String,AttributeValue> key) throws AmazonServiceException, AmazonClientException
Deletes a single item in a table by primary key. You can perform a conditional delete operation that deletes the item if it exists, or if it has an expected attribute value.
In addition to deleting an item, you can also return the item's attribute values in the same operation, using the ReturnValues parameter.
Unless you specify conditions, the DeleteItem is an idempotent operation; running it multiple times on the same item or attribute does not result in an error response.
Conditional deletes are useful for only deleting items if specific conditions are met. If those conditions are met, Amazon DynamoDB performs the delete. Otherwise, the item is not deleted.
deleteItem in interface AmazonDynamoDBtableName - The name of the table from which to delete the item.key - A map of attribute names to AttributeValue objects,
representing the primary key of the item to delete.ItemCollectionSizeLimitExceededExceptionResourceNotFoundExceptionConditionalCheckFailedExceptionProvisionedThroughputExceededExceptionInternalServerErrorExceptionAmazonClientException - If any internal errors are encountered inside the client while
attempting to make the request or handle the response. For example
if a network connection is not available.AmazonServiceException - If an error response is returned by AmazonDynamoDBv2 indicating
either a problem with the data in the request, or a server side issue.public DeleteItemResult deleteItem(String tableName, Map<String,AttributeValue> key, String returnValues) throws AmazonServiceException, AmazonClientException
Deletes a single item in a table by primary key. You can perform a conditional delete operation that deletes the item if it exists, or if it has an expected attribute value.
In addition to deleting an item, you can also return the item's attribute values in the same operation, using the ReturnValues parameter.
Unless you specify conditions, the DeleteItem is an idempotent operation; running it multiple times on the same item or attribute does not result in an error response.
Conditional deletes are useful for only deleting items if specific conditions are met. If those conditions are met, Amazon DynamoDB performs the delete. Otherwise, the item is not deleted.
deleteItem in interface AmazonDynamoDBtableName - The name of the table from which to delete the item.key - A map of attribute names to AttributeValue objects,
representing the primary key of the item to delete.returnValues - Use ReturnValues if you want to get the
item attributes as they appeared before they were deleted. For
DeleteItem, the valid values are: NONE - If ReturnValues is not specified, or if
its value is NONE, then nothing is returned. (This is the
default for ReturnValues.)
ALL_OLD -
The content of the old item is returned.
ItemCollectionSizeLimitExceededExceptionResourceNotFoundExceptionConditionalCheckFailedExceptionProvisionedThroughputExceededExceptionInternalServerErrorExceptionAmazonClientException - If any internal errors are encountered inside the client while
attempting to make the request or handle the response. For example
if a network connection is not available.AmazonServiceException - If an error response is returned by AmazonDynamoDBv2 indicating
either a problem with the data in the request, or a server side issue.public CreateTableResult createTable(List<AttributeDefinition> attributeDefinitions, String tableName, List<KeySchemaElement> keySchema, ProvisionedThroughput provisionedThroughput) throws AmazonServiceException, AmazonClientException
The CreateTable operation adds a new table to your account. In an AWS account, table names must be unique within each region. That is, you can have two tables with same name if you create the tables in different regions.
CreateTable is an asynchronous operation. Upon receiving a
CreateTable request, Amazon DynamoDB immediately returns a
response with a TableStatus of CREATING . After
the table is created, Amazon DynamoDB sets the TableStatus to
ACTIVE . You can perform read and write operations only
on an ACTIVE table.
If you want to create multiple tables with local secondary indexes on
them, you must create them sequentially. Only one table with local
secondary indexes can be in the CREATING state at any
given time.
You can use the DescribeTable API to check the table status.
createTable in interface AmazonDynamoDBattributeDefinitions - An array of attributes that describe the
key schema for the table and indexes.tableName - The name of the table to create.keySchema - Specifies the attributes that make up the primary key
for the table. The attributes in KeySchema must also be defined
in the AttributeDefinitions array. For more information, see Data
Model in the Amazon DynamoDB Developer Guide. Each KeySchemaElement in the array is composed of:
AttributeName - The name of this key attribute.
KeyType - Determines whether the key attribute is
HASH or RANGE.
For a primary
key that consists of a hash attribute, you must specify exactly one
element with a KeyType of HASH.
For a primary
key that consists of hash and range attributes, you must specify
exactly two elements, in this order: The first element must have a
KeyType of HASH, and the second element must have
a KeyType of RANGE.
For more information, see Specifying the Primary Key in the Amazon DynamoDB Developer Guide.
provisionedThroughput - The provisioned throughput settings for
the specified table. The settings can be modified using the
UpdateTable operation. For current minimum and maximum provisioned throughput values, see Limits in the Amazon DynamoDB Developer Guide.
ResourceInUseExceptionLimitExceededExceptionInternalServerErrorExceptionAmazonClientException - If any internal errors are encountered inside the client while
attempting to make the request or handle the response. For example
if a network connection is not available.AmazonServiceException - If an error response is returned by AmazonDynamoDBv2 indicating
either a problem with the data in the request, or a server side issue.public PutItemResult putItem(String tableName, Map<String,AttributeValue> item) throws AmazonServiceException, AmazonClientException
Creates a new item, or replaces an old item with a new item. If an item already exists in the specified table with the same primary key, the new item completely replaces the existing item. You can perform a conditional put (insert a new item if one with the specified primary key doesn't exist), or replace an existing item if it has certain attribute values.
In addition to putting an item, you can also return the item's attribute values in the same operation, using the ReturnValues parameter.
When you add an item, the primary key attribute(s) are the only required attributes. Attribute values cannot be null. String and binary type attributes must have lengths greater than zero. Set type attributes cannot be empty. Requests with empty values will be rejected with a ValidationException .
You can request that PutItem return either a copy of the old item (before the update) or a copy of the new item (after the update). For more information, see the ReturnValues description.
NOTE: To prevent a new item from replacing an existing item, use a conditional put operation with Exists set to false for the primary key attribute, or attributes.
For more information about using this API, see Working with Items in the Amazon DynamoDB Developer Guide.
putItem in interface AmazonDynamoDBtableName - The name of the table to contain the item.item - A map of attribute name/value pairs, one for each
attribute. Only the primary key attributes are required; you can
optionally provide other attribute name-value pairs for the item.
If you specify any attributes that are part of an index key, then the data types for those attributes must match those of the schema in the table's attribute definition.
For more information about primary keys, see Primary Key in the Amazon DynamoDB Developer Guide.
Each element in the Item map is an AttributeValue object.
ItemCollectionSizeLimitExceededExceptionResourceNotFoundExceptionConditionalCheckFailedExceptionProvisionedThroughputExceededExceptionInternalServerErrorExceptionAmazonClientException - If any internal errors are encountered inside the client while
attempting to make the request or handle the response. For example
if a network connection is not available.AmazonServiceException - If an error response is returned by AmazonDynamoDBv2 indicating
either a problem with the data in the request, or a server side issue.public PutItemResult putItem(String tableName, Map<String,AttributeValue> item, String returnValues) throws AmazonServiceException, AmazonClientException
Creates a new item, or replaces an old item with a new item. If an item already exists in the specified table with the same primary key, the new item completely replaces the existing item. You can perform a conditional put (insert a new item if one with the specified primary key doesn't exist), or replace an existing item if it has certain attribute values.
In addition to putting an item, you can also return the item's attribute values in the same operation, using the ReturnValues parameter.
When you add an item, the primary key attribute(s) are the only required attributes. Attribute values cannot be null. String and binary type attributes must have lengths greater than zero. Set type attributes cannot be empty. Requests with empty values will be rejected with a ValidationException .
You can request that PutItem return either a copy of the old item (before the update) or a copy of the new item (after the update). For more information, see the ReturnValues description.
NOTE: To prevent a new item from replacing an existing item, use a conditional put operation with Exists set to false for the primary key attribute, or attributes.
For more information about using this API, see Working with Items in the Amazon DynamoDB Developer Guide.
putItem in interface AmazonDynamoDBtableName - The name of the table to contain the item.item - A map of attribute name/value pairs, one for each
attribute. Only the primary key attributes are required; you can
optionally provide other attribute name-value pairs for the item.
If you specify any attributes that are part of an index key, then the data types for those attributes must match those of the schema in the table's attribute definition.
For more information about primary keys, see Primary Key in the Amazon DynamoDB Developer Guide.
Each element in the Item map is an AttributeValue object.
returnValues - Use ReturnValues if you want to get the
item attributes as they appeared before they were updated with the
PutItem request. For PutItem, the valid values are: NONE - If ReturnValues is not specified,
or if its value is NONE, then nothing is returned. (This
is the default for ReturnValues.)
ALL_OLD - If PutItem overwrote an attribute
name-value pair, then the content of the old item is returned.
ItemCollectionSizeLimitExceededExceptionResourceNotFoundExceptionConditionalCheckFailedExceptionProvisionedThroughputExceededExceptionInternalServerErrorExceptionAmazonClientException - If any internal errors are encountered inside the client while
attempting to make the request or handle the response. For example
if a network connection is not available.AmazonServiceException - If an error response is returned by AmazonDynamoDBv2 indicating
either a problem with the data in the request, or a server side issue.public ListTablesResult listTables(String exclusiveStartTableName) throws AmazonServiceException, AmazonClientException
Returns an array of all the tables associated with the current account and endpoint.
listTables in interface AmazonDynamoDBexclusiveStartTableName - The name of the table that starts the
list. If you already ran a ListTables operation and received a
LastEvaluatedTableName value in the response, use that value
here to continue the list.InternalServerErrorExceptionAmazonClientException - If any internal errors are encountered inside the client while
attempting to make the request or handle the response. For example
if a network connection is not available.AmazonServiceException - If an error response is returned by AmazonDynamoDBv2 indicating
either a problem with the data in the request, or a server side issue.public ListTablesResult listTables(String exclusiveStartTableName, Integer limit) throws AmazonServiceException, AmazonClientException
Returns an array of all the tables associated with the current account and endpoint.
listTables in interface AmazonDynamoDBexclusiveStartTableName - The name of the table that starts the
list. If you already ran a ListTables operation and received a
LastEvaluatedTableName value in the response, use that value
here to continue the list.limit - A maximum number of table names to return.InternalServerErrorExceptionAmazonClientException - If any internal errors are encountered inside the client while
attempting to make the request or handle the response. For example
if a network connection is not available.AmazonServiceException - If an error response is returned by AmazonDynamoDBv2 indicating
either a problem with the data in the request, or a server side issue.public ListTablesResult listTables(Integer limit) throws AmazonServiceException, AmazonClientException
Returns an array of all the tables associated with the current account and endpoint.
listTables in interface AmazonDynamoDBlimit - A maximum number of table names to return.InternalServerErrorExceptionAmazonClientException - If any internal errors are encountered inside the client while
attempting to make the request or handle the response. For example
if a network connection is not available.AmazonServiceException - If an error response is returned by AmazonDynamoDBv2 indicating
either a problem with the data in the request, or a server side issue.public UpdateItemResult updateItem(String tableName, Map<String,AttributeValue> key, Map<String,AttributeValueUpdate> attributeUpdates) throws AmazonServiceException, AmazonClientException
Edits an existing item's attributes, or inserts a new item if it does not already exist. You can put, delete, or add attribute values. You can also perform a conditional update (insert a new attribute name-value pair if it doesn't exist, or replace an existing name-value pair if it has certain expected attribute values).
In addition to updating an item, you can also return the item's attribute values in the same operation, using the ReturnValues parameter.
updateItem in interface AmazonDynamoDBtableName - The name of the table containing the item to update.key - The primary key that defines the item. Each element
consists of an attribute name and a value for that attribute.attributeUpdates - The names of attributes to be modified, the
action to perform on each, and the new value for each. If you are
updating an attribute that is an index key attribute for any indexes
on that table, the attribute type must match the index key type
defined in the AttributesDefinition of the table description.
You can use UpdateItem to update any non-key attributes.
Attribute values cannot be null. String and binary type attributes must have lengths greater than zero. Set type attributes must not be empty. Requests with empty values will be rejected with a ValidationException.
Each AttributeUpdates element consists of an attribute name to modify, along with the following:
Value - The new value, if applicable, for this attribute.
Action - Specifies how to perform the
update. Valid values for Action are PUT,
DELETE, and ADD. The behavior depends on
whether the specified primary key already exists in the table.
If an item with the specified Key is found in the table:
PUT - Adds the specified attribute to the
item. If the attribute already exists, it is replaced by the new
value.
DELETE - If no value is specified,
the attribute and its value are removed from the item. The data type
of the specified value must match the existing value's data type.
If a set of values is specified, then those values are
subtracted from the old set. For example, if the attribute value was
the set [a,b,c] and the DELETE action specified
[a,c], then the final attribute value would be
[b]. Specifying an empty set is an error.
ADD - If the attribute does not already exist, then
the attribute and its values are added to the item. If the attribute
does exist, then the behavior of ADD depends on the data
type of the attribute:
If the existing attribute is a
number, and if Value is also a number, then the Value is
mathematically added to the existing attribute. If Value is a
negative number, then it is subtracted from the existing attribute.
If you use In addition, if you use
ADD to increment or decrement a
number value for an item that doesn't exist before the update, Amazon
DynamoDB uses 0 as the initial value. ADD to update an existing item, and intend to increment
or decrement an attribute value which does not yet exist, Amazon
DynamoDB uses 0 as the initial value. For example,
suppose that the item you want to update does not yet have an
attribute named itemcount, but you decide to ADD
the number 3 to this attribute anyway, even though it
currently does not exist. Amazon DynamoDB will create the
itemcount attribute, set its initial value to 0,
and finally add 3 to it. The result will be a new
itemcount attribute in the item, with a value of
3.
If the existing data type is a
set, and if the Value is also a set, then the Value is
added to the existing set. (This is a set operation, not
mathematical addition.) For example, if the attribute value was the
set [1,2], and the ADD action specified
[3], then the final attribute value would be
[1,2,3]. An error occurs if an Add action is specified
for a set attribute and the attribute type specified does not match
the existing set type.
Both sets must have the same primitive data type. For example, if the existing data type is a set of strings, the Value must also be a set of strings. The same holds true for number sets and binary sets.
This action is only valid
for an existing attribute whose data type is number or is a set. Do
not use ADD for any other data types.
If no item with the specified Key is found:
PUT - Amazon DynamoDB creates a new item with the
specified primary key, and then adds the attribute.
DELETE - Nothing happens; there is no attribute to
delete.
ADD - Amazon DynamoDB creates an
item with the supplied primary key and number (or set of numbers) for
the attribute value. The only data types allowed are number and number
set; no other data types can be specified.
If you specify any attributes that are part of an index key, then the data types for those attributes must match those of the schema in the table's attribute definition.
ItemCollectionSizeLimitExceededExceptionResourceNotFoundExceptionConditionalCheckFailedExceptionProvisionedThroughputExceededExceptionInternalServerErrorExceptionAmazonClientException - If any internal errors are encountered inside the client while
attempting to make the request or handle the response. For example
if a network connection is not available.AmazonServiceException - If an error response is returned by AmazonDynamoDBv2 indicating
either a problem with the data in the request, or a server side issue.public UpdateItemResult updateItem(String tableName, Map<String,AttributeValue> key, Map<String,AttributeValueUpdate> attributeUpdates, String returnValues) throws AmazonServiceException, AmazonClientException
Edits an existing item's attributes, or inserts a new item if it does not already exist. You can put, delete, or add attribute values. You can also perform a conditional update (insert a new attribute name-value pair if it doesn't exist, or replace an existing name-value pair if it has certain expected attribute values).
In addition to updating an item, you can also return the item's attribute values in the same operation, using the ReturnValues parameter.
updateItem in interface AmazonDynamoDBtableName - The name of the table containing the item to update.key - The primary key that defines the item. Each element
consists of an attribute name and a value for that attribute.attributeUpdates - The names of attributes to be modified, the
action to perform on each, and the new value for each. If you are
updating an attribute that is an index key attribute for any indexes
on that table, the attribute type must match the index key type
defined in the AttributesDefinition of the table description.
You can use UpdateItem to update any non-key attributes.
Attribute values cannot be null. String and binary type attributes must have lengths greater than zero. Set type attributes must not be empty. Requests with empty values will be rejected with a ValidationException.
Each AttributeUpdates element consists of an attribute name to modify, along with the following:
Value - The new value, if applicable, for this attribute.
Action - Specifies how to perform the
update. Valid values for Action are PUT,
DELETE, and ADD. The behavior depends on
whether the specified primary key already exists in the table.
If an item with the specified Key is found in the table:
PUT - Adds the specified attribute to the
item. If the attribute already exists, it is replaced by the new
value.
DELETE - If no value is specified,
the attribute and its value are removed from the item. The data type
of the specified value must match the existing value's data type.
If a set of values is specified, then those values are
subtracted from the old set. For example, if the attribute value was
the set [a,b,c] and the DELETE action specified
[a,c], then the final attribute value would be
[b]. Specifying an empty set is an error.
ADD - If the attribute does not already exist, then
the attribute and its values are added to the item. If the attribute
does exist, then the behavior of ADD depends on the data
type of the attribute:
If the existing attribute is a
number, and if Value is also a number, then the Value is
mathematically added to the existing attribute. If Value is a
negative number, then it is subtracted from the existing attribute.
If you use In addition, if you use
ADD to increment or decrement a
number value for an item that doesn't exist before the update, Amazon
DynamoDB uses 0 as the initial value. ADD to update an existing item, and intend to increment
or decrement an attribute value which does not yet exist, Amazon
DynamoDB uses 0 as the initial value. For example,
suppose that the item you want to update does not yet have an
attribute named itemcount, but you decide to ADD
the number 3 to this attribute anyway, even though it
currently does not exist. Amazon DynamoDB will create the
itemcount attribute, set its initial value to 0,
and finally add 3 to it. The result will be a new
itemcount attribute in the item, with a value of
3.
If the existing data type is a
set, and if the Value is also a set, then the Value is
added to the existing set. (This is a set operation, not
mathematical addition.) For example, if the attribute value was the
set [1,2], and the ADD action specified
[3], then the final attribute value would be
[1,2,3]. An error occurs if an Add action is specified
for a set attribute and the attribute type specified does not match
the existing set type.
Both sets must have the same primitive data type. For example, if the existing data type is a set of strings, the Value must also be a set of strings. The same holds true for number sets and binary sets.
This action is only valid
for an existing attribute whose data type is number or is a set. Do
not use ADD for any other data types.
If no item with the specified Key is found:
PUT - Amazon DynamoDB creates a new item with the
specified primary key, and then adds the attribute.
DELETE - Nothing happens; there is no attribute to
delete.
ADD - Amazon DynamoDB creates an
item with the supplied primary key and number (or set of numbers) for
the attribute value. The only data types allowed are number and number
set; no other data types can be specified.
If you specify any attributes that are part of an index key, then the data types for those attributes must match those of the schema in the table's attribute definition.
returnValues - Use ReturnValues if you want to get the
item attributes as they appeared either before or after they were
updated. For UpdateItem, the valid values are: NONE - If ReturnValues is not specified, or if
its value is NONE, then nothing is returned. (This is the
default for ReturnValues.)
ALL_OLD -
If UpdateItem overwrote an attribute name-value pair, then the
content of the old item is returned.
UPDATED_OLD - The old versions of only the updated
attributes are returned.
ALL_NEW - All of
the attributes of the new version of the item are returned.
UPDATED_NEW - The new versions of only the updated
attributes are returned.
ItemCollectionSizeLimitExceededExceptionResourceNotFoundExceptionConditionalCheckFailedExceptionProvisionedThroughputExceededExceptionInternalServerErrorExceptionAmazonClientException - If any internal errors are encountered inside the client while
attempting to make the request or handle the response. For example
if a network connection is not available.AmazonServiceException - If an error response is returned by AmazonDynamoDBv2 indicating
either a problem with the data in the request, or a server side issue.public BatchGetItemResult batchGetItem(Map<String,KeysAndAttributes> requestItems, String returnConsumedCapacity) throws AmazonServiceException, AmazonClientException
The BatchGetItem operation returns the attributes of one or more items from one or more tables. You identify requested items by primary key.
A single operation can retrieve up to 1 MB of data, which can comprise as many as 100 items. BatchGetItem will return a partial result if the response size limit is exceeded, the table's provisioned throughput is exceeded, or an internal processing failure occurs. If a partial result is returned, the operation returns a value for UnprocessedKeys . You can use this value to retry the operation starting with the next item to get.
For example, if you ask to retrieve 100 items, but each individual item is 50 KB in size, the system returns 20 items (1 MB) and an appropriate UnprocessedKeys value so you can get the next page of results. If desired, your application can include its own logic to assemble the pages of results into one dataset.
If no items can be processed because of insufficient provisioned throughput on each of the tables involved in the request, BatchGetItem throws ProvisionedThroughputExceededException .
By default, BatchGetItem performs eventually consistent reads
on every table in the request. If you want strongly consistent reads
instead, you can set ConsistentRead to true for
any or all tables.
In order to minimize response latency, BatchGetItem fetches items in parallel.
When designing your application, keep in mind that Amazon DynamoDB does not return attributes in any particular order. To help parse the response by item, include the primary key values for the items in your request in the AttributesToGet parameter.
If a requested item does not exist, it is not returned in the result. Requests for nonexistent items consume the minimum read capacity units according to the type of read. For more information, see Capacity Units Calculations in the Amazon DynamoDB Developer Guide.
batchGetItem in interface AmazonDynamoDBrequestItems - A map of one or more table names and, for each
table, the corresponding primary keys for the items to retrieve. Each
table name can be invoked only once. Each element in the map consists of the following:
Keys - An array of primary key attribute values that define specific items in the table.
AttributesToGet - One or more attributes to be retrieved from the table or index. By default, all attributes are returned. If a specified attribute is not found, it does not appear in the result.
ConsistentRead - If
true, a strongly consistent read is used; if
false (the default), an eventually consistent read is
used.
returnConsumedCapacity - If set to TOTAL,
ConsumedCapacity is included in the response; if set to
NONE (the default), ConsumedCapacity is not
included.ResourceNotFoundExceptionProvisionedThroughputExceededExceptionInternalServerErrorExceptionAmazonClientException - If any internal errors are encountered inside the client while
attempting to make the request or handle the response. For example
if a network connection is not available.AmazonServiceException - If an error response is returned by AmazonDynamoDBv2 indicating
either a problem with the data in the request, or a server side issue.public BatchGetItemResult batchGetItem(Map<String,KeysAndAttributes> requestItems) throws AmazonServiceException, AmazonClientException
The BatchGetItem operation returns the attributes of one or more items from one or more tables. You identify requested items by primary key.
A single operation can retrieve up to 1 MB of data, which can comprise as many as 100 items. BatchGetItem will return a partial result if the response size limit is exceeded, the table's provisioned throughput is exceeded, or an internal processing failure occurs. If a partial result is returned, the operation returns a value for UnprocessedKeys . You can use this value to retry the operation starting with the next item to get.
For example, if you ask to retrieve 100 items, but each individual item is 50 KB in size, the system returns 20 items (1 MB) and an appropriate UnprocessedKeys value so you can get the next page of results. If desired, your application can include its own logic to assemble the pages of results into one dataset.
If no items can be processed because of insufficient provisioned throughput on each of the tables involved in the request, BatchGetItem throws ProvisionedThroughputExceededException .
By default, BatchGetItem performs eventually consistent reads
on every table in the request. If you want strongly consistent reads
instead, you can set ConsistentRead to true for
any or all tables.
In order to minimize response latency, BatchGetItem fetches items in parallel.
When designing your application, keep in mind that Amazon DynamoDB does not return attributes in any particular order. To help parse the response by item, include the primary key values for the items in your request in the AttributesToGet parameter.
If a requested item does not exist, it is not returned in the result. Requests for nonexistent items consume the minimum read capacity units according to the type of read. For more information, see Capacity Units Calculations in the Amazon DynamoDB Developer Guide.
batchGetItem in interface AmazonDynamoDBrequestItems - A map of one or more table names and, for each
table, the corresponding primary keys for the items to retrieve. Each
table name can be invoked only once. Each element in the map consists of the following:
Keys - An array of primary key attribute values that define specific items in the table.
AttributesToGet - One or more attributes to be retrieved from the table or index. By default, all attributes are returned. If a specified attribute is not found, it does not appear in the result.
ConsistentRead - If
true, a strongly consistent read is used; if
false (the default), an eventually consistent read is
used.
ResourceNotFoundExceptionProvisionedThroughputExceededExceptionInternalServerErrorExceptionAmazonClientException - If any internal errors are encountered inside the client while
attempting to make the request or handle the response. For example
if a network connection is not available.AmazonServiceException - If an error response is returned by AmazonDynamoDBv2 indicating
either a problem with the data in the request, or a server side issue.public void setEndpoint(String endpoint)
AmazonWebServiceClientThis method is not threadsafe. Endpoints should be configured when the client is created and before any service requests are made. Changing it afterwards creates inevitable race conditions for any service requests in transit.
Callers can pass in just the endpoint (ex: "ec2.amazonaws.com") or a full
URL, including the protocol (ex: "https://ec2.amazonaws.com"). If the
protocol is not specified here, the default protocol from this client's
ClientConfiguration will be used, which by default is HTTPS.
For more information on using AWS regions with the AWS SDK for Java, and a complete list of all available endpoints for all AWS services, see: http://developer.amazonwebservices.com/connect/entry.jspa?externalID=3912
setEndpoint in interface AmazonDynamoDBsetEndpoint in class AmazonWebServiceClientendpoint - The endpoint (ex: "ec2.amazonaws.com") or a full URL,
including the protocol (ex: "https://ec2.amazonaws.com") of
the region specific AWS endpoint this client will communicate
with.public void setEndpoint(String endpoint, String serviceName, String regionId) throws IllegalArgumentException
AmazonWebServiceClientThis method is not threadsafe. Endpoints should be configured when the client is created and before any service requests are made. Changing it afterwards creates inevitable race conditions for any service requests in transit.
Callers can pass in just the endpoint (ex: "dynamodb.us-east-1.amazonaws.com/") or a full
URL, including the protocol (ex: "http://dynamodb.us-east-1.amazonaws.com/"). If the
protocol is not specified here, the default protocol from this client's
ClientConfiguration will be used, which by default is HTTPS.
For more information on using AWS regions with the AWS SDK for Java, and a complete list of all available endpoints for all AWS services, see: http://developer.amazonwebservices.com/connect/entry.jspa?externalID=3912
setEndpoint in class AmazonWebServiceClientendpoint - The endpoint (ex: "dynamodb.us-east-1.amazonaws.com/") or a full URL,
including the protocol (ex: "http://dynamodb.us-east-1.amazonaws.com/") of
the region specific AWS endpoint this client will communicate
with.serviceName - The name of the AWS service to use when signing requests.regionId - The ID of the region in which this service resides.IllegalArgumentException - If any problems are detected with the specified endpoint.AmazonDynamoDB#setRegion(Region)public ResponseMetadata getCachedResponseMetadata(AmazonWebServiceRequest request)
Response metadata is only cached for a limited period of time, so if you need to access this extra diagnostic information for an executed request, you should use this method to retrieve it as soon as possible after executing the request.
getCachedResponseMetadata in interface AmazonDynamoDBrequest - The originally executed requestCopyright © 2013 Amazon Web Services, Inc. All Rights Reserved.