AmazonDynamoDB (AWS SDK for Android

All Known Subinterfaces:

AmazonDynamoDBAsync

All Known Implementing Classes:

AmazonDynamoDBAsyncClient, AmazonDynamoDBClient
```
public interface AmazonDynamoDB
```
Interface for accessing Amazon DynamoDB Amazon DynamoDB
Amazon DynamoDB is a fully managed NoSQL database service that provides fast and predictable performance with seamless scalability. DynamoDB lets you offload the administrative burdens of operating and scaling a distributed database, so that you don't have to worry about hardware provisioning, setup and configuration, replication, software patching, or cluster scaling.

With DynamoDB, you can create database tables that can store and retrieve any amount of data, and serve any level of request traffic. You can scale up or scale down your tables' throughput capacity without downtime or performance degradation, and use the AWS Management Console to monitor resource utilization and performance metrics.

DynamoDB automatically spreads the data and traffic for your tables over a sufficient number of servers to handle your throughput and storage requirements, while maintaining consistent and fast performance. All of your data is stored on solid state disks (SSDs) and automatically replicated across multiple Availability Zones in an AWS region, providing built-in high availability and data durability.

Method Summary

All Methods Instance Methods Abstract Methods
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(java.util.Map<java.lang.String,KeysAndAttributes> requestItems)` The `BatchGetItem` operation returns the attributes of one or more items from one or more tables.
`BatchGetItemResult`	`batchGetItem(java.util.Map<java.lang.String,KeysAndAttributes> requestItems, java.lang.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(java.util.Map<java.lang.String,java.util.List<WriteRequest>> requestItems)` The `BatchWriteItem` operation puts or deletes multiple items in one or more tables.
`CreateBackupResult`	`createBackup(CreateBackupRequest createBackupRequest)` Creates a backup for an existing table.
`CreateGlobalTableResult`	`createGlobalTable(CreateGlobalTableRequest createGlobalTableRequest)` Creates a global table from an existing table.
`CreateTableResult`	`createTable(CreateTableRequest createTableRequest)` The `CreateTable` operation adds a new table to your account.
`CreateTableResult`	`createTable(java.util.List<AttributeDefinition> attributeDefinitions, java.lang.String tableName, java.util.List<KeySchemaElement> keySchema, ProvisionedThroughput provisionedThroughput)` The `CreateTable` operation adds a new table to your account.
`DeleteBackupResult`	`deleteBackup(DeleteBackupRequest deleteBackupRequest)` Deletes an existing backup of a table.
`DeleteItemResult`	`deleteItem(DeleteItemRequest deleteItemRequest)` Deletes a single item in a table by primary key.
`DeleteItemResult`	`deleteItem(java.lang.String tableName, java.util.Map<java.lang.String,AttributeValue> key)` Deletes a single item in a table by primary key.
`DeleteItemResult`	`deleteItem(java.lang.String tableName, java.util.Map<java.lang.String,AttributeValue> key, java.lang.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(java.lang.String tableName)` The `DeleteTable` operation deletes a table and all of its items.
`DescribeBackupResult`	`describeBackup(DescribeBackupRequest describeBackupRequest)` Describes an existing backup of a table.
`DescribeContinuousBackupsResult`	`describeContinuousBackups(DescribeContinuousBackupsRequest describeContinuousBackupsRequest)` Checks the status of continuous backups and point in time recovery on the specified table.
`DescribeEndpointsResult`	`describeEndpoints(DescribeEndpointsRequest describeEndpointsRequest)`
`DescribeGlobalTableResult`	`describeGlobalTable(DescribeGlobalTableRequest describeGlobalTableRequest)` Returns information about the specified global table.
`DescribeGlobalTableSettingsResult`	`describeGlobalTableSettings(DescribeGlobalTableSettingsRequest describeGlobalTableSettingsRequest)` Describes region specific settings for a global table.
`DescribeLimitsResult`	`describeLimits(DescribeLimitsRequest describeLimitsRequest)` Returns the current provisioned-capacity limits for your AWS account in a region, both for the region as a whole and for any one DynamoDB table that you create there.
`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(java.lang.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.
`DescribeTimeToLiveResult`	`describeTimeToLive(DescribeTimeToLiveRequest describeTimeToLiveRequest)` Gives a description of the Time to Live (TTL) status on the specified 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(java.lang.String tableName, java.util.Map<java.lang.String,AttributeValue> key)` The `GetItem` operation returns a set of attributes for the item with the given primary key.
`GetItemResult`	`getItem(java.lang.String tableName, java.util.Map<java.lang.String,AttributeValue> key, java.lang.Boolean consistentRead)` The `GetItem` operation returns a set of attributes for the item with the given primary key.
`ListBackupsResult`	`listBackups(ListBackupsRequest listBackupsRequest)` List backups associated with an AWS account.
`ListGlobalTablesResult`	`listGlobalTables(ListGlobalTablesRequest listGlobalTablesRequest)` Lists all global tables that have a replica in the specified region.
`ListTablesResult`	`listTables()` Returns an array of table names associated with the current account and endpoint.
`ListTablesResult`	`listTables(java.lang.Integer limit)` Returns an array of table names associated with the current account and endpoint.
`ListTablesResult`	`listTables(ListTablesRequest listTablesRequest)` Returns an array of table names associated with the current account and endpoint.
`ListTablesResult`	`listTables(java.lang.String exclusiveStartTableName)` Returns an array of table names associated with the current account and endpoint.
`ListTablesResult`	`listTables(java.lang.String exclusiveStartTableName, java.lang.Integer limit)` Returns an array of table names associated with the current account and endpoint.
`ListTagsOfResourceResult`	`listTagsOfResource(ListTagsOfResourceRequest listTagsOfResourceRequest)` List all tags on an Amazon DynamoDB resource.
`PutItemResult`	`putItem(PutItemRequest putItemRequest)` Creates a new item, or replaces an old item with a new item.
`PutItemResult`	`putItem(java.lang.String tableName, java.util.Map<java.lang.String,AttributeValue> item)` Creates a new item, or replaces an old item with a new item.
`PutItemResult`	`putItem(java.lang.String tableName, java.util.Map<java.lang.String,AttributeValue> item, java.lang.String returnValues)` Creates a new item, or replaces an old item with a new item.
`QueryResult`	`query(QueryRequest queryRequest)` The `Query` operation finds items based on primary key values.
`RestoreTableFromBackupResult`	`restoreTableFromBackup(RestoreTableFromBackupRequest restoreTableFromBackupRequest)` Creates a new table from an existing backup.
`RestoreTableToPointInTimeResult`	`restoreTableToPointInTime(RestoreTableToPointInTimeRequest restoreTableToPointInTimeRequest)` Restores the specified table to the specified point in time within `EarliestRestorableDateTime` and `LatestRestorableDateTime`.
`ScanResult`	`scan(ScanRequest scanRequest)` The `Scan` operation returns one or more items and item attributes by accessing every item in a table or a secondary index.
`ScanResult`	`scan(java.lang.String tableName, java.util.List<java.lang.String> attributesToGet)` The `Scan` operation returns one or more items and item attributes by accessing every item in a table or a secondary index.
`ScanResult`	`scan(java.lang.String tableName, java.util.List<java.lang.String> attributesToGet, java.util.Map<java.lang.String,Condition> scanFilter)` The `Scan` operation returns one or more items and item attributes by accessing every item in a table or a secondary index.
`ScanResult`	`scan(java.lang.String tableName, java.util.Map<java.lang.String,Condition> scanFilter)` The `Scan` operation returns one or more items and item attributes by accessing every item in a table or a secondary index.
`void`	`setEndpoint(java.lang.String endpoint)` Overrides the default endpoint for this client ("https://dynamodb.us-east-1.amazonaws.com").
`void`	`setRegion(Region region)` An alternative to `setEndpoint(String)`, sets the regional endpoint for this client's service calls.
`void`	`shutdown()` Shuts down this client object, releasing any resources that might be held open.
`void`	`tagResource(TagResourceRequest tagResourceRequest)` Associate a set of tags with an Amazon DynamoDB resource.
`void`	`untagResource(UntagResourceRequest untagResourceRequest)` Removes the association of tags from an Amazon DynamoDB resource.
`UpdateContinuousBackupsResult`	`updateContinuousBackups(UpdateContinuousBackupsRequest updateContinuousBackupsRequest)` `UpdateContinuousBackups` enables or disables point in time recovery for the specified table.
`UpdateGlobalTableResult`	`updateGlobalTable(UpdateGlobalTableRequest updateGlobalTableRequest)` Adds or removes replicas in the specified global table.
`UpdateGlobalTableSettingsResult`	`updateGlobalTableSettings(UpdateGlobalTableSettingsRequest updateGlobalTableSettingsRequest)` Updates settings for a global table.
`UpdateItemResult`	`updateItem(java.lang.String tableName, java.util.Map<java.lang.String,AttributeValue> key, java.util.Map<java.lang.String,AttributeValueUpdate> attributeUpdates)` Edits an existing item's attributes, or adds a new item to the table if it does not already exist.
`UpdateItemResult`	`updateItem(java.lang.String tableName, java.util.Map<java.lang.String,AttributeValue> key, java.util.Map<java.lang.String,AttributeValueUpdate> attributeUpdates, java.lang.String returnValues)` Edits an existing item's attributes, or adds a new item to the table if it does not already exist.
`UpdateItemResult`	`updateItem(UpdateItemRequest updateItemRequest)` Edits an existing item's attributes, or adds a new item to the table if it does not already exist.
`UpdateTableResult`	`updateTable(java.lang.String tableName, ProvisionedThroughput provisionedThroughput)` Modifies the provisioned throughput settings, global secondary indexes, or DynamoDB Streams settings for a given table.
`UpdateTableResult`	`updateTable(UpdateTableRequest updateTableRequest)` Modifies the provisioned throughput settings, global secondary indexes, or DynamoDB Streams settings for a given table.
`UpdateTimeToLiveResult`	`updateTimeToLive(UpdateTimeToLiveRequest updateTimeToLiveRequest)` The UpdateTimeToLive method will enable or disable TTL for the specified table.

- Method Detail
  - setEndpoint
```
void setEndpoint(java.lang.String endpoint)
          throws java.lang.IllegalArgumentException
```
    Overrides the default endpoint for this client ("https://dynamodb.us-east-1.amazonaws.com"). Callers can use this method to control which AWS region they want to work with.
    Callers can pass in just the endpoint (ex: "dynamodb.us-east-1.amazonaws.com") or a full URL, including the protocol (ex: "https://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
    This method is not threadsafe. An endpoint 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 or retrying.
    
    Parameters:
    
    endpoint - The endpoint (ex: "dynamodb.us-east-1.amazonaws.com") or a full URL, including the protocol (ex: "https://dynamodb.us-east-1.amazonaws.com") of the region specific AWS endpoint this client will communicate with.
    
    Throws:
    
    java.lang.IllegalArgumentException - If any problems are detected with the specified endpoint.
  - setRegion
```
void setRegion(Region region)
        throws java.lang.IllegalArgumentException
```
    An alternative to setEndpoint(String), sets the regional endpoint for this client's service calls. Callers can use this method to control which AWS region they want to work with.
    By default, all service endpoints in all regions use the https protocol. To use http instead, specify it in the ClientConfiguration supplied at construction.
    This method is not threadsafe. A region 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 or retrying.
    
    Parameters:
    
    region - The region this client will communicate with. See Region.getRegion(com.amazonaws.regions.Regions) for accessing a given region.
    
    Throws:
    
    java.lang.IllegalArgumentException - If the given region is null, or if this service isn't available in the given region. See Region.isServiceSupported(String)
    
    See Also:
    
    Region.getRegion(com.amazonaws.regions.Regions), Region.createClient(Class, com.amazonaws.auth.AWSCredentialsProvider, ClientConfiguration)
  - batchGetItem
```
BatchGetItemResult batchGetItem(BatchGetItemRequest batchGetItemRequest)
                         throws AmazonClientException,
                                AmazonServiceException
```
    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 16 MB of data, which can contain 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.
    
    If you request more than 100 items BatchGetItem will return a ValidationException with the message "Too many items requested for the BatchGetItem call".
    
    For example, if you ask to retrieve 100 items, but each individual item is 300 KB in size, the system returns 52 items (so as not to exceed the 16 MB limit). It also returns 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 data set.
    
    If none of the items can be processed due to insufficient provisioned throughput on all of the tables in the request, then BatchGetItem will return a ProvisionedThroughputExceededException. If at least one of the items is successfully processed, then BatchGetItem completes successfully, while returning the keys of the unread items in UnprocessedKeys.
    
    If DynamoDB returns any unprocessed items, you should retry the batch operation on those items. However, we strongly recommend that you use an exponential backoff algorithm. If you retry the batch operation immediately, the underlying read or write requests can still fail due to throttling on the individual tables. If you delay the batch operation using exponential backoff, the individual requests in the batch are much more likely to succeed.
    
    For more information, see Batch Operations and Error Handling in the Amazon DynamoDB Developer Guide.
    
    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 retrieves items in parallel.
    
    When designing your application, keep in mind that DynamoDB does not return items in any particular order. To help parse the response by item, include the primary key values for the items in your request in the ProjectionExpression 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.
    
    Parameters:
    
    batchGetItemRequest -
    Represents the input of a BatchGetItem operation.
    
    Returns:
    
    batchGetItemResult The response from the BatchGetItem service method, as returned by Amazon DynamoDB.
    
    Throws:
    
    ProvisionedThroughputExceededException
    
    ResourceNotFoundException
    
    InternalServerErrorException
    
    AmazonClientException - 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 Amazon DynamoDB indicating either a problem with the data in the request, or a server side issue.
  - batchWriteItem
```
BatchWriteItemResult batchWriteItem(BatchWriteItemRequest batchWriteItemRequest)
                             throws AmazonClientException,
                                    AmazonServiceException
```
    The BatchWriteItem operation puts or deletes multiple items in one or more tables. A single call to BatchWriteItem can write up to 16 MB of data, which can comprise as many as 25 put or delete requests. Individual items to be written can be as large as 400 KB.
    
    BatchWriteItem cannot update items. To update items, use the UpdateItem action.
    
    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.
    
    Note that if none of the items can be processed due to insufficient provisioned throughput on all of the tables in the request, then BatchWriteItem will return a ProvisionedThroughputExceededException.
    
    If DynamoDB returns any unprocessed items, you should retry the batch operation on those items. However, we strongly recommend that you use an exponential backoff algorithm. If you retry the batch operation immediately, the underlying read or write requests can still fail due to throttling on the individual tables. If you delay the batch operation using exponential backoff, the individual requests in the batch are much more likely to succeed.
    
    For more information, see Batch Operations and Error Handling in the Amazon DynamoDB Developer Guide.
    
    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 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, 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, you must update or delete the specified items one at a time. In both situations, BatchWriteItem 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, 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.
    - Your request contains at least two items with identical hash and range keys (which essentially is two put operations).
    - There are more than 25 requests in the batch.
    - Any individual item in a batch exceeds 400 KB.
    - The total request size exceeds 16 MB.
    Parameters:
    
    batchWriteItemRequest -
    Represents the input of a BatchWriteItem operation.
    
    Returns:
    
    batchWriteItemResult The response from the BatchWriteItem service method, as returned by Amazon DynamoDB.
    
    Throws:
    
    ProvisionedThroughputExceededException
    
    ResourceNotFoundException
    
    ItemCollectionSizeLimitExceededException
    
    InternalServerErrorException
    
    AmazonClientException - 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 Amazon DynamoDB indicating either a problem with the data in the request, or a server side issue.
  - createBackup
```
CreateBackupResult createBackup(CreateBackupRequest createBackupRequest)
                         throws AmazonClientException,
                                AmazonServiceException
```
    Creates a backup for an existing table.
    
    Each time you create an On-Demand Backup, the entire table data is backed up. There is no limit to the number of on-demand backups that can be taken.
    
    When you create an On-Demand Backup, a time marker of the request is cataloged, and the backup is created asynchronously, by applying all changes until the time of the request to the last full table snapshot. Backup requests are processed instantaneously and become available for restore within minutes.
    
    You can call CreateBackup at a maximum rate of 50 times per second.
    
    All backups in DynamoDB work without consuming any provisioned throughput on the table.
    
    If you submit a backup request on 2018-12-14 at 14:25:00, the backup is guaranteed to contain all data committed to the table up to 14:24:00, and data committed after 14:26:00 will not be. The backup may or may not contain data modifications made between 14:24:00 and 14:26:00. On-Demand Backup does not support causal consistency.
    
    Along with data, the following are also included on the backups:
    - Global secondary indexes (GSIs)
    - Local secondary indexes (LSIs)
    - Streams
    - Provisioned read and write capacity
    Parameters:
    
    createBackupRequest -
    
    Returns:
    
    createBackupResult The response from the CreateBackup service method, as returned by Amazon DynamoDB.
    
    Throws:
    
    TableNotFoundException
    
    TableInUseException
    
    ContinuousBackupsUnavailableException
    
    BackupInUseException
    
    LimitExceededException
    
    InternalServerErrorException
    
    AmazonClientException - 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 Amazon DynamoDB indicating either a problem with the data in the request, or a server side issue.
  - createGlobalTable
```
CreateGlobalTableResult createGlobalTable(CreateGlobalTableRequest createGlobalTableRequest)
                                   throws AmazonClientException,
                                          AmazonServiceException
```
    Creates a global table from an existing table. A global table creates a replication relationship between two or more DynamoDB tables with the same table name in the provided regions.
    
    If you want to add a new replica table to a global table, each of the following conditions must be true:
    - The table must have the same primary key as all of the other replicas.
    - The table must have the same name as all of the other replicas.
    - The table must have DynamoDB Streams enabled, with the stream containing both the new and the old images of the item.
    - None of the replica tables in the global table can contain any data.
    If global secondary indexes are specified, then the following conditions must also be met:
    - The global secondary indexes must have the same name.
    - The global secondary indexes must have the same hash key and sort key (if present).
    Write capacity settings should be set consistently across your replica tables and secondary indexes. DynamoDB strongly recommends enabling auto scaling to manage the write capacity settings for all of your global tables replicas and indexes.
    
    If you prefer to manage write capacity settings manually, you should provision equal replicated write capacity units to your replica tables. You should also provision equal replicated write capacity units to matching secondary indexes across your global table.
    Parameters:
    
    createGlobalTableRequest -
    
    Returns:
    
    createGlobalTableResult The response from the CreateGlobalTable service method, as returned by Amazon DynamoDB.
    
    Throws:
    
    LimitExceededException
    
    InternalServerErrorException
    
    GlobalTableAlreadyExistsException
    
    TableNotFoundException
    
    AmazonClientException - 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 Amazon DynamoDB indicating either a problem with the data in the request, or a server side issue.
  - createTable
```
CreateTableResult createTable(CreateTableRequest createTableRequest)
                       throws AmazonClientException,
                              AmazonServiceException
```
    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, DynamoDB immediately returns a response with a TableStatus of CREATING. After the table is created, DynamoDB sets the TableStatus to ACTIVE. You can perform read and write operations only on an ACTIVE table.
    
    You can optionally define secondary indexes on the new table, as part of the CreateTable operation. If you want to create multiple tables with secondary indexes on them, you must create the tables sequentially. Only one table with secondary indexes can be in the CREATING state at any given time.
    
    You can use the DescribeTable action to check the table status.
    
    Parameters:
    
    createTableRequest -
    Represents the input of a CreateTable operation.
    
    Returns:
    
    createTableResult The response from the CreateTable service method, as returned by Amazon DynamoDB.
    
    Throws:
    
    ResourceInUseException
    
    LimitExceededException
    
    InternalServerErrorException
    
    AmazonClientException - 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 Amazon DynamoDB indicating either a problem with the data in the request, or a server side issue.
  - deleteBackup
```
DeleteBackupResult deleteBackup(DeleteBackupRequest deleteBackupRequest)
                         throws AmazonClientException,
                                AmazonServiceException
```
    Deletes an existing backup of a table.
    
    You can call DeleteBackup at a maximum rate of 10 times per second.
    
    Parameters:
    
    deleteBackupRequest -
    
    Returns:
    
    deleteBackupResult The response from the DeleteBackup service method, as returned by Amazon DynamoDB.
    
    Throws:
    
    BackupNotFoundException
    
    BackupInUseException
    
    LimitExceededException
    
    InternalServerErrorException
    
    AmazonClientException - 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 Amazon DynamoDB indicating either a problem with the data in the request, or a server side issue.
  - deleteItem
```
DeleteItemResult deleteItem(DeleteItemRequest deleteItemRequest)
                     throws AmazonClientException,
                            AmazonServiceException
```
    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 deleting items only if specific conditions are met. If those conditions are met, DynamoDB performs the delete. Otherwise, the item is not deleted.
    
    Parameters:
    
    deleteItemRequest -
    Represents the input of a DeleteItem operation.
    
    Returns:
    
    deleteItemResult The response from the DeleteItem service method, as returned by Amazon DynamoDB.
    
    Throws:
    
    ConditionalCheckFailedException
    
    ProvisionedThroughputExceededException
    
    ResourceNotFoundException
    
    ItemCollectionSizeLimitExceededException
    
    InternalServerErrorException
    
    AmazonClientException - 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 Amazon DynamoDB indicating either a problem with the data in the request, or a server side issue.
  - deleteTable
```
DeleteTableResult deleteTable(DeleteTableRequest deleteTableRequest)
                       throws AmazonClientException,
                              AmazonServiceException
```
    The DeleteTable operation deletes a table and all of its items. After a DeleteTable request, the specified table is in the DELETING state until 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 DynamoDB returns a ResourceInUseException. If the specified table does not exist, DynamoDB returns a ResourceNotFoundException. If table is already in the DELETING state, no error is returned.
    
    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 indexes on that table are also deleted.
    
    If you have DynamoDB Streams enabled on the table, then the corresponding stream on that table goes into the DISABLED state, and the stream is automatically deleted after 24 hours.
    
    Use the DescribeTable action to check the status of the table.
    
    Parameters:
    
    deleteTableRequest -
    Represents the input of a DeleteTable operation.
    
    Returns:
    
    deleteTableResult The response from the DeleteTable service method, as returned by Amazon DynamoDB.
    
    Throws:
    
    ResourceInUseException
    
    ResourceNotFoundException
    
    LimitExceededException
    
    InternalServerErrorException
    
    AmazonClientException - 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 Amazon DynamoDB indicating either a problem with the data in the request, or a server side issue.
  - describeBackup
```
DescribeBackupResult describeBackup(DescribeBackupRequest describeBackupRequest)
                             throws AmazonClientException,
                                    AmazonServiceException
```
    Describes an existing backup of a table.
    
    You can call DescribeBackup at a maximum rate of 10 times per second.
    
    Parameters:
    
    describeBackupRequest -
    
    Returns:
    
    describeBackupResult The response from the DescribeBackup service method, as returned by Amazon DynamoDB.
    
    Throws:
    
    BackupNotFoundException
    
    InternalServerErrorException
    
    AmazonClientException - 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 Amazon DynamoDB indicating either a problem with the data in the request, or a server side issue.
  - describeContinuousBackups
```
DescribeContinuousBackupsResult describeContinuousBackups(DescribeContinuousBackupsRequest describeContinuousBackupsRequest)
                                                   throws AmazonClientException,
                                                          AmazonServiceException
```
    Checks the status of continuous backups and point in time recovery on the specified table. Continuous backups are ENABLED on all tables at table creation. If point in time recovery is enabled, PointInTimeRecoveryStatus will be set to ENABLED.
    
    Once continuous backups and point in time recovery are enabled, you can restore to any point in time within EarliestRestorableDateTime and LatestRestorableDateTime.
    
    LatestRestorableDateTime is typically 5 minutes before the current time. You can restore your table to any point in time during the last 35 days.
    
    You can call DescribeContinuousBackups at a maximum rate of 10 times per second.
    
    Parameters:
    
    describeContinuousBackupsRequest -
    
    Returns:
    
    describeContinuousBackupsResult The response from the DescribeContinuousBackups service method, as returned by Amazon DynamoDB.
    
    Throws:
    
    TableNotFoundException
    
    InternalServerErrorException
    
    AmazonClientException - 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 Amazon DynamoDB indicating either a problem with the data in the request, or a server side issue.
  - describeEndpoints
```
DescribeEndpointsResult describeEndpoints(DescribeEndpointsRequest describeEndpointsRequest)
                                   throws AmazonClientException,
                                          AmazonServiceException
```
    Parameters:
    
    describeEndpointsRequest -
    
    Returns:
    
    describeEndpointsResult The response from the DescribeEndpoints service method, as returned by Amazon DynamoDB.
    
    Throws:
    
    AmazonClientException - 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 Amazon DynamoDB indicating either a problem with the data in the request, or a server side issue.
  - describeGlobalTable
```
DescribeGlobalTableResult describeGlobalTable(DescribeGlobalTableRequest describeGlobalTableRequest)
                                       throws AmazonClientException,
                                              AmazonServiceException
```
    Returns information about the specified global table.
    
    Parameters:
    
    describeGlobalTableRequest -
    
    Returns:
    
    describeGlobalTableResult The response from the DescribeGlobalTable service method, as returned by Amazon DynamoDB.
    
    Throws:
    
    InternalServerErrorException
    
    GlobalTableNotFoundException
    
    AmazonClientException - 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 Amazon DynamoDB indicating either a problem with the data in the request, or a server side issue.
  - describeGlobalTableSettings
```
DescribeGlobalTableSettingsResult describeGlobalTableSettings(DescribeGlobalTableSettingsRequest describeGlobalTableSettingsRequest)
                                                       throws AmazonClientException,
                                                              AmazonServiceException
```
    Describes region specific settings for a global table.
    
    Parameters:
    
    describeGlobalTableSettingsRequest -
    
    Returns:
    
    describeGlobalTableSettingsResult The response from the DescribeGlobalTableSettings service method, as returned by Amazon DynamoDB.
    
    Throws:
    
    GlobalTableNotFoundException
    
    InternalServerErrorException
    
    AmazonClientException - 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 Amazon DynamoDB indicating either a problem with the data in the request, or a server side issue.
  - describeLimits
```
DescribeLimitsResult describeLimits(DescribeLimitsRequest describeLimitsRequest)
                             throws AmazonClientException,
                                    AmazonServiceException
```
    Returns the current provisioned-capacity limits for your AWS account in a region, both for the region as a whole and for any one DynamoDB table that you create there.
    
    When you establish an AWS account, the account has initial limits on the maximum read capacity units and write capacity units that you can provision across all of your DynamoDB tables in a given region. Also, there are per-table limits that apply when you create a table there. For more information, see Limits page in the Amazon DynamoDB Developer Guide.
    
    Although you can increase these limits by filing a case at AWS Support Center, obtaining the increase is not instantaneous. The DescribeLimits action lets you write code to compare the capacity you are currently using to those limits imposed by your account so that you have enough time to apply for an increase before you hit a limit.
    
    For example, you could use one of the AWS SDKs to do the following:
    1. Call DescribeLimits for a particular region to obtain your current account limits on provisioned capacity there.
    2. Create a variable to hold the aggregate read capacity units provisioned for all your tables in that region, and one to hold the aggregate write capacity units. Zero them both.
    3. Call ListTables to obtain a list of all your DynamoDB tables.
    4. For each table name listed by ListTables, do the following:
      
      Call DescribeTable with the table name.
      
      Use the data returned by DescribeTable to add the read capacity units and write capacity units provisioned for the table itself to your variables.
      
      If the table has one or more global secondary indexes (GSIs), loop over these GSIs and add their provisioned capacity values to your variables as well.
    5. Report the account limits for that region returned by DescribeLimits, along with the total current provisioned capacity levels you have calculated.
    This will let you see whether you are getting close to your account-level limits.
    
    The per-table limits apply only when you are creating a new table. They restrict the sum of the provisioned capacity of the new table itself and all its global secondary indexes.
    
    For existing tables and their GSIs, DynamoDB will not let you increase provisioned capacity extremely rapidly, but the only upper limit that applies is that the aggregate provisioned capacity over all your tables and GSIs cannot exceed either of the per-account limits.
    
    DescribeLimits should only be called periodically. You can expect throttling errors if you call it more than once in a minute.
    
    The DescribeLimits Request element has no content.
    Parameters:
    
    describeLimitsRequest -
    Represents the input of a DescribeLimits operation. Has no content.
    
    Returns:
    
    describeLimitsResult The response from the DescribeLimits service method, as returned by Amazon DynamoDB.
    
    Throws:
    
    InternalServerErrorException
    
    AmazonClientException - 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 Amazon DynamoDB indicating either a problem with the data in the request, or a server side issue.
  - describeTable
```
DescribeTableResult describeTable(DescribeTableRequest describeTableRequest)
                           throws AmazonClientException,
                                  AmazonServiceException
```
    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.
    
    If you issue a DescribeTable request immediately after a CreateTable request, DynamoDB might return a ResourceNotFoundException. This is because DescribeTable uses an eventually consistent query, and the metadata for your table might not be available at that moment. Wait for a few seconds, and then try the DescribeTable request again.
    
    Parameters:
    
    describeTableRequest -
    Represents the input of a DescribeTable operation.
    
    Returns:
    
    describeTableResult The response from the DescribeTable service method, as returned by Amazon DynamoDB.
    
    Throws:
    
    ResourceNotFoundException
    
    InternalServerErrorException
    
    AmazonClientException - 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 Amazon DynamoDB indicating either a problem with the data in the request, or a server side issue.
  - describeTimeToLive
```
DescribeTimeToLiveResult describeTimeToLive(DescribeTimeToLiveRequest describeTimeToLiveRequest)
                                     throws AmazonClientException,
                                            AmazonServiceException
```
    Gives a description of the Time to Live (TTL) status on the specified table.
    
    Parameters:
    
    describeTimeToLiveRequest -
    
    Returns:
    
    describeTimeToLiveResult The response from the DescribeTimeToLive service method, as returned by Amazon DynamoDB.
    
    Throws:
    
    ResourceNotFoundException
    
    InternalServerErrorException
    
    AmazonClientException - 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 Amazon DynamoDB indicating either a problem with the data in the request, or a server side issue.
  - getItem
```
GetItemResult getItem(GetItemRequest getItemRequest)
               throws AmazonClientException,
                      AmazonServiceException
```
    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 and there will be no Item element in the response.
    
    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.
    
    Parameters:
    
    getItemRequest -
    Represents the input of a GetItem operation.
    
    Returns:
    
    getItemResult The response from the GetItem service method, as returned by Amazon DynamoDB.
    
    Throws:
    
    ProvisionedThroughputExceededException
    
    ResourceNotFoundException
    
    InternalServerErrorException
    
    AmazonClientException - 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 Amazon DynamoDB indicating either a problem with the data in the request, or a server side issue.
  - listBackups
```
ListBackupsResult listBackups(ListBackupsRequest listBackupsRequest)
                       throws AmazonClientException,
                              AmazonServiceException
```
    List backups associated with an AWS account. To list backups for a given table, specify TableName. ListBackups returns a paginated list of results with at most 1MB worth of items in a page. You can also specify a limit for the maximum number of entries to be returned in a page.
    
    In the request, start time is inclusive but end time is exclusive. Note that these limits are for the time at which the original backup was requested.
    
    You can call ListBackups a maximum of 5 times per second.
    
    Parameters:
    
    listBackupsRequest -
    
    Returns:
    
    listBackupsResult The response from the ListBackups service method, as returned by Amazon DynamoDB.
    
    Throws:
    
    InternalServerErrorException
    
    AmazonClientException - 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 Amazon DynamoDB indicating either a problem with the data in the request, or a server side issue.
  - listGlobalTables
```
ListGlobalTablesResult listGlobalTables(ListGlobalTablesRequest listGlobalTablesRequest)
                                 throws AmazonClientException,
                                        AmazonServiceException
```
    Lists all global tables that have a replica in the specified region.
    
    Parameters:
    
    listGlobalTablesRequest -
    
    Returns:
    
    listGlobalTablesResult The response from the ListGlobalTables service method, as returned by Amazon DynamoDB.
    
    Throws:
    
    InternalServerErrorException
    
    AmazonClientException - 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 Amazon DynamoDB indicating either a problem with the data in the request, or a server side issue.
  - listTables
```
ListTablesResult listTables(ListTablesRequest listTablesRequest)
                     throws AmazonClientException,
                            AmazonServiceException
```
    Returns an array of table names associated with the current account and endpoint. The output from ListTables is paginated, with each page returning a maximum of 100 table names.
    
    Parameters:
    
    listTablesRequest -
    Represents the input of a ListTables operation.
    
    Returns:
    
    listTablesResult The response from the ListTables service method, as returned by Amazon DynamoDB.
    
    Throws:
    
    InternalServerErrorException
    
    AmazonClientException - 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 Amazon DynamoDB indicating either a problem with the data in the request, or a server side issue.
  - listTagsOfResource
```
ListTagsOfResourceResult listTagsOfResource(ListTagsOfResourceRequest listTagsOfResourceRequest)
                                     throws AmazonClientException,
                                            AmazonServiceException
```
    List all tags on an Amazon DynamoDB resource. You can call ListTagsOfResource up to 10 times per second, per account.
    
    For an overview on tagging DynamoDB resources, see Tagging for DynamoDB in the Amazon DynamoDB Developer Guide.
    
    Parameters:
    
    listTagsOfResourceRequest -
    
    Returns:
    
    listTagsOfResourceResult The response from the ListTagsOfResource service method, as returned by Amazon DynamoDB.
    
    Throws:
    
    ResourceNotFoundException
    
    InternalServerErrorException
    
    AmazonClientException - 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 Amazon DynamoDB indicating either a problem with the data in the request, or a server side issue.
  - putItem
```
PutItemResult putItem(PutItemRequest putItemRequest)
               throws AmazonClientException,
                      AmazonServiceException
```
    Creates a new item, or replaces an old item with a new item. If an item that has the same primary key as the new item already exists in the specified table, the new item completely replaces the existing item. You can perform a conditional put operation (add a new item if one with the specified primary key doesn't exist), or replace an existing item if it has certain attribute values. You can return the item's attribute values in the same operation, using the ReturnValues parameter.
    This topic provides general information about the PutItem API.
    
    For information on how to call the PutItem API using the AWS SDK in specific languages, see the following:
    
    PutItem in the AWS Command Line Interface
    
    PutItem in the AWS SDK for .NET
    
    PutItem in the AWS SDK for C++
    
    PutItem in the AWS SDK for Go
    
    PutItem in the AWS SDK for Java
    
    PutItem in the AWS SDK for JavaScript
    
    PutItem in the AWS SDK for PHP V3
    
    PutItem in the AWS SDK for Python
    
    PutItem in the AWS SDK for Ruby V2
    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 exception.
    
    To prevent a new item from replacing an existing item, use a conditional expression that contains the attribute_not_exists function with the name of the attribute being used as the partition key for the table. Since every record must contain that attribute, the attribute_not_exists function will only succeed if no matching item exists.
    
    For more information about PutItem, see Working with Items in the Amazon DynamoDB Developer Guide.
    Parameters:
    
    putItemRequest -
    Represents the input of a PutItem operation.
    
    Returns:
    
    putItemResult The response from the PutItem service method, as returned by Amazon DynamoDB.
    
    Throws:
    
    ConditionalCheckFailedException
    
    ProvisionedThroughputExceededException
    
    ResourceNotFoundException
    
    ItemCollectionSizeLimitExceededException
    
    InternalServerErrorException
    
    AmazonClientException - 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 Amazon DynamoDB indicating either a problem with the data in the request, or a server side issue.
  - query
```
QueryResult query(QueryRequest queryRequest)
           throws AmazonClientException,
                  AmazonServiceException
```
    The Query operation finds items based on primary key values. You can query any table or secondary index that has a composite primary key (a partition key and a sort key).
    
    Use the KeyConditionExpression parameter to provide a specific value for the partition key. The Query operation will return all of the items from the table or index with that partition key value. You can optionally narrow the scope of the Query operation by specifying a sort key value and a comparison operator in KeyConditionExpression. To further refine the Query results, you can optionally provide a FilterExpression. A FilterExpression determines which items within the results should be returned to you. All of the other results are discarded.
    
    A Query operation always returns a result set. If no matching items are found, the result set will be empty. Queries that do not return results consume the minimum number of read capacity units for that type of read operation.
    
    DynamoDB calculates the number of read capacity units consumed based on item size, not on the amount of data that is returned to an application. The number of capacity units consumed will be the same whether you request all of the attributes (the default behavior) or just some of them (using a projection expression). The number will also be the same whether or not you use a FilterExpression.
    
    Query results are always sorted by the sort key value. If the data type of the sort key is Number, the results are returned in numeric order; otherwise, the results are returned in order of UTF-8 bytes. By default, the sort order is ascending. To reverse the order, set the ScanIndexForward parameter to false.
    
    A single Query operation will read up to the maximum number of items set (if using the Limit parameter) or a maximum of 1 MB of data and then apply any filtering to the results using FilterExpression. If LastEvaluatedKey is present in the response, you will need to paginate the result set. For more information, see Paginating the Results in the Amazon DynamoDB Developer Guide.
    
    FilterExpression is applied after a Query finishes, but before the results are returned. A FilterExpression cannot contain partition key or sort key attributes. You need to specify those attributes in the KeyConditionExpression.
    
    A Query operation can return an empty result set and a LastEvaluatedKey if all the items read for the page of results are filtered out.
    
    You can query a table, a local secondary index, or a global secondary index. For a query on a table or on a local secondary index, you can set the ConsistentRead parameter to true and obtain a strongly consistent result. Global secondary indexes support eventually consistent reads only, so do not specify ConsistentRead when querying a global secondary index.
    
    Parameters:
    
    queryRequest -
    Represents the input of a Query operation.
    
    Returns:
    
    queryResult The response from the Query service method, as returned by Amazon DynamoDB.
    
    Throws:
    
    ProvisionedThroughputExceededException
    
    ResourceNotFoundException
    
    InternalServerErrorException
    
    AmazonClientException - 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 Amazon DynamoDB indicating either a problem with the data in the request, or a server side issue.
  - restoreTableFromBackup
```
RestoreTableFromBackupResult restoreTableFromBackup(RestoreTableFromBackupRequest restoreTableFromBackupRequest)
                                             throws AmazonClientException,
                                                    AmazonServiceException
```
    Creates a new table from an existing backup. Any number of users can execute up to 4 concurrent restores (any type of restore) in a given account.
    
    You can call RestoreTableFromBackup at a maximum rate of 10 times per second.
    
    You must manually set up the following on the restored table:
    - Auto scaling policies
    - IAM policies
    - Cloudwatch metrics and alarms
    - Tags
    - Stream settings
    - Time to Live (TTL) settings
    Parameters:
    
    restoreTableFromBackupRequest -
    
    Returns:
    
    restoreTableFromBackupResult The response from the RestoreTableFromBackup service method, as returned by Amazon DynamoDB.
    
    Throws:
    
    TableAlreadyExistsException
    
    TableInUseException
    
    BackupNotFoundException
    
    BackupInUseException
    
    LimitExceededException
    
    InternalServerErrorException
    
    AmazonClientException - 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 Amazon DynamoDB indicating either a problem with the data in the request, or a server side issue.
  - restoreTableToPointInTime
```
RestoreTableToPointInTimeResult restoreTableToPointInTime(RestoreTableToPointInTimeRequest restoreTableToPointInTimeRequest)
                                                   throws AmazonClientException,
                                                          AmazonServiceException
```
    Restores the specified table to the specified point in time within EarliestRestorableDateTime and LatestRestorableDateTime. You can restore your table to any point in time during the last 35 days. Any number of users can execute up to 4 concurrent restores (any type of restore) in a given account.
    
    When you restore using point in time recovery, DynamoDB restores your table data to the state based on the selected date and time (day:hour:minute:second) to a new table.
    
    Along with data, the following are also included on the new restored table using point in time recovery:
    - Global secondary indexes (GSIs)
    - Local secondary indexes (LSIs)
    - Provisioned read and write capacity
    - Encryption settings
      
      All these settings come from the current settings of the source table at the time of restore.
    You must manually set up the following on the restored table:
    - Auto scaling policies
    - IAM policies
    - Cloudwatch metrics and alarms
    - Tags
    - Stream settings
    - Time to Live (TTL) settings
    - Point in time recovery settings
    Parameters:
    
    restoreTableToPointInTimeRequest -
    
    Returns:
    
    restoreTableToPointInTimeResult The response from the RestoreTableToPointInTime service method, as returned by Amazon DynamoDB.
    
    Throws:
    
    TableAlreadyExistsException
    
    TableNotFoundException
    
    TableInUseException
    
    LimitExceededException
    
    InvalidRestoreTimeException
    
    PointInTimeRecoveryUnavailableException
    
    InternalServerErrorException
    
    AmazonClientException - 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 Amazon DynamoDB indicating either a problem with the data in the request, or a server side issue.
  - scan
```
ScanResult scan(ScanRequest scanRequest)
         throws AmazonClientException,
                AmazonServiceException
```
    The Scan operation returns one or more items and item attributes by accessing every item in a table or a secondary index. To have DynamoDB return fewer items, you can provide a FilterExpression operation.
    
    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 as a LastEvaluatedKey value 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.
    
    A single Scan operation will read up to the maximum number of items set (if using the Limit parameter) or a maximum of 1 MB of data and then apply any filtering to the results using FilterExpression. If LastEvaluatedKey is present in the response, you will need to paginate the result set. For more information, see Paginating the Results in the Amazon DynamoDB Developer Guide.
    
    Scan operations proceed sequentially; however, for faster performance on a large table or secondary index, applications can request a parallel Scan operation by providing the Segment and TotalSegments parameters. For more information, see Parallel Scan in the Amazon DynamoDB Developer Guide.
    
    Scan uses eventually consistent reads when accessing the data in a table; therefore, the result set might not include the changes to data in the table immediately before the operation began. If you need a consistent copy of the data, as of the time that the Scan begins, you can set the ConsistentRead parameter to true.
    
    Parameters:
    
    scanRequest -
    Represents the input of a Scan operation.
    
    Returns:
    
    scanResult The response from the Scan service method, as returned by Amazon DynamoDB.
    
    Throws:
    
    ProvisionedThroughputExceededException
    
    ResourceNotFoundException
    
    InternalServerErrorException
    
    AmazonClientException - 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 Amazon DynamoDB indicating either a problem with the data in the request, or a server side issue.
  - tagResource
```
void tagResource(TagResourceRequest tagResourceRequest)
          throws AmazonClientException,
                 AmazonServiceException
```
    Associate a set of tags with an Amazon DynamoDB resource. You can then activate these user-defined tags so that they appear on the Billing and Cost Management console for cost allocation tracking. You can call TagResource up to 5 times per second, per account.
    
    For an overview on tagging DynamoDB resources, see Tagging for DynamoDB in the Amazon DynamoDB Developer Guide.
    
    Parameters:
    
    tagResourceRequest -
    
    Throws:
    
    LimitExceededException
    
    ResourceNotFoundException
    
    InternalServerErrorException
    
    ResourceInUseException
    
    AmazonClientException - 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 Amazon DynamoDB indicating either a problem with the data in the request, or a server side issue.
  - untagResource
```
void untagResource(UntagResourceRequest untagResourceRequest)
            throws AmazonClientException,
                   AmazonServiceException
```
    Removes the association of tags from an Amazon DynamoDB resource. You can call UntagResource up to 5 times per second, per account.
    
    For an overview on tagging DynamoDB resources, see Tagging for DynamoDB in the Amazon DynamoDB Developer Guide.
    
    Parameters:
    
    untagResourceRequest -
    
    Throws:
    
    LimitExceededException
    
    ResourceNotFoundException
    
    InternalServerErrorException
    
    ResourceInUseException
    
    AmazonClientException - 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 Amazon DynamoDB indicating either a problem with the data in the request, or a server side issue.
  - updateContinuousBackups
```
UpdateContinuousBackupsResult updateContinuousBackups(UpdateContinuousBackupsRequest updateContinuousBackupsRequest)
                                               throws AmazonClientException,
                                                      AmazonServiceException
```
    UpdateContinuousBackups enables or disables point in time recovery for the specified table. A successful UpdateContinuousBackups call returns the current ContinuousBackupsDescription. Continuous backups are ENABLED on all tables at table creation. If point in time recovery is enabled, PointInTimeRecoveryStatus will be set to ENABLED.
    
    Once continuous backups and point in time recovery are enabled, you can restore to any point in time within EarliestRestorableDateTime and LatestRestorableDateTime.
    
    LatestRestorableDateTime is typically 5 minutes before the current time. You can restore your table to any point in time during the last 35 days..
    
    Parameters:
    
    updateContinuousBackupsRequest -
    
    Returns:
    
    updateContinuousBackupsResult The response from the UpdateContinuousBackups service method, as returned by Amazon DynamoDB.
    
    Throws:
    
    TableNotFoundException
    
    ContinuousBackupsUnavailableException
    
    InternalServerErrorException
    
    AmazonClientException - 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 Amazon DynamoDB indicating either a problem with the data in the request, or a server side issue.
  - updateGlobalTable
```
UpdateGlobalTableResult updateGlobalTable(UpdateGlobalTableRequest updateGlobalTableRequest)
                                   throws AmazonClientException,
                                          AmazonServiceException
```
    Adds or removes replicas in the specified global table. The global table must already exist to be able to use this operation. Any replica to be added must be empty, must have the same name as the global table, must have the same key schema, and must have DynamoDB Streams enabled and must have same provisioned and maximum write capacity units.
    
    Although you can use UpdateGlobalTable to add replicas and remove replicas in a single request, for simplicity we recommend that you issue separate requests for adding or removing replicas.
    
    If global secondary indexes are specified, then the following conditions must also be met:
    - The global secondary indexes must have the same name.
    - The global secondary indexes must have the same hash key and sort key (if present).
    - The global secondary indexes must have the same provisioned and maximum write capacity units.
    Parameters:
    
    updateGlobalTableRequest -
    
    Returns:
    
    updateGlobalTableResult The response from the UpdateGlobalTable service method, as returned by Amazon DynamoDB.
    
    Throws:
    
    InternalServerErrorException
    
    GlobalTableNotFoundException
    
    ReplicaAlreadyExistsException
    
    ReplicaNotFoundException
    
    TableNotFoundException
    
    AmazonClientException - 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 Amazon DynamoDB indicating either a problem with the data in the request, or a server side issue.
  - updateGlobalTableSettings
```
UpdateGlobalTableSettingsResult updateGlobalTableSettings(UpdateGlobalTableSettingsRequest updateGlobalTableSettingsRequest)
                                                   throws AmazonClientException,
                                                          AmazonServiceException
```
    Updates settings for a global table.
    
    Parameters:
    
    updateGlobalTableSettingsRequest -
    
    Returns:
    
    updateGlobalTableSettingsResult The response from the UpdateGlobalTableSettings service method, as returned by Amazon DynamoDB.
    
    Throws:
    
    GlobalTableNotFoundException
    
    ReplicaNotFoundException
    
    IndexNotFoundException
    
    LimitExceededException
    
    ResourceInUseException
    
    InternalServerErrorException
    
    AmazonClientException - 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 Amazon DynamoDB indicating either a problem with the data in the request, or a server side issue.
  - updateItem
```
UpdateItemResult updateItem(UpdateItemRequest updateItemRequest)
                     throws AmazonClientException,
                            AmazonServiceException
```
    Edits an existing item's attributes, or adds a new item to the table if it does not already exist. You can put, delete, or add attribute values. You can also perform a conditional update on an existing item (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).
    
    You can also return the item's attribute values in the same UpdateItem operation using the ReturnValues parameter.
    
    Parameters:
    
    updateItemRequest -
    Represents the input of an UpdateItem operation.
    
    Returns:
    
    updateItemResult The response from the UpdateItem service method, as returned by Amazon DynamoDB.
    
    Throws:
    
    ConditionalCheckFailedException
    
    ProvisionedThroughputExceededException
    
    ResourceNotFoundException
    
    ItemCollectionSizeLimitExceededException
    
    InternalServerErrorException
    
    AmazonClientException - 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 Amazon DynamoDB indicating either a problem with the data in the request, or a server side issue.
  - updateTable
```
UpdateTableResult updateTable(UpdateTableRequest updateTableRequest)
                       throws AmazonClientException,
                              AmazonServiceException
```
    Modifies the provisioned throughput settings, global secondary indexes, or DynamoDB Streams settings for a given table.
    
    You can only perform one of the following operations at once:
    - Modify the provisioned throughput settings of the table.
    - Enable or disable Streams on the table.
    - Remove a global secondary index from the table.
    - Create a new global secondary index on the table. Once the index begins backfilling, you can use UpdateTable to perform other operations.
    UpdateTable is an asynchronous operation; while it is executing, the table status changes from ACTIVE to UPDATING. While it is UPDATING, you cannot issue another UpdateTable request. When the table returns to the ACTIVE state, the UpdateTable operation is complete.
    Parameters:
    
    updateTableRequest -
    Represents the input of an UpdateTable operation.
    
    Returns:
    
    updateTableResult The response from the UpdateTable service method, as returned by Amazon DynamoDB.
    
    Throws:
    
    ResourceInUseException
    
    ResourceNotFoundException
    
    LimitExceededException
    
    InternalServerErrorException
    
    AmazonClientException - 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 Amazon DynamoDB indicating either a problem with the data in the request, or a server side issue.
  - updateTimeToLive
```
UpdateTimeToLiveResult updateTimeToLive(UpdateTimeToLiveRequest updateTimeToLiveRequest)
                                 throws AmazonClientException,
                                        AmazonServiceException
```
    The UpdateTimeToLive method will enable or disable TTL for the specified table. A successful UpdateTimeToLive call returns the current TimeToLiveSpecification; it may take up to one hour for the change to fully process. Any additional UpdateTimeToLive calls for the same table during this one hour duration result in a ValidationException.
    
    TTL compares the current time in epoch time format to the time stored in the TTL attribute of an item. If the epoch time value stored in the attribute is less than the current time, the item is marked as expired and subsequently deleted.
    
    The epoch time format is the number of seconds elapsed since 12:00:00 AM January 1st, 1970 UTC.
    
    DynamoDB deletes expired items on a best-effort basis to ensure availability of throughput for other data operations.
    
    DynamoDB typically deletes expired items within two days of expiration. The exact duration within which an item gets deleted after expiration is specific to the nature of the workload. Items that have expired and not been deleted will still show up in reads, queries, and scans.
    
    As items are deleted, they are removed from any Local Secondary Index and Global Secondary Index immediately in the same eventually consistent way as a standard delete operation.
    
    For more information, see Time To Live in the Amazon DynamoDB Developer Guide.
    
    Parameters:
    
    updateTimeToLiveRequest -
    Represents the input of an UpdateTimeToLive operation.
    
    Returns:
    
    updateTimeToLiveResult The response from the UpdateTimeToLive service method, as returned by Amazon DynamoDB.
    
    Throws:
    
    ResourceInUseException
    
    ResourceNotFoundException
    
    LimitExceededException
    
    InternalServerErrorException
    
    AmazonClientException - 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 Amazon DynamoDB indicating either a problem with the data in the request, or a server side issue.
  - putItem
```
PutItemResult putItem(java.lang.String tableName,
                      java.util.Map<java.lang.String,AttributeValue> item)
               throws AmazonClientException,
                      AmazonServiceException
```
    Creates a new item, or replaces an old item with a new item. If an item that has the same primary key as the new item already exists in the specified table, the new item completely replaces the existing item. You can perform a conditional put operation (add a new item if one with the specified primary key doesn't exist), or replace an existing item if it has certain attribute values. You can return the item's attribute values in the same operation, using the ReturnValues parameter.
    This topic provides general information about the PutItem API.
    
    For information on how to call the PutItem API using the AWS SDK in specific languages, see the following:
    
    PutItem in the AWS Command Line Interface
    
    PutItem in the AWS SDK for .NET
    
    PutItem in the AWS SDK for C++
    
    PutItem in the AWS SDK for Go
    
    PutItem in the AWS SDK for Java
    
    PutItem in the AWS SDK for JavaScript
    
    PutItem in the AWS SDK for PHP V3
    
    PutItem in the AWS SDK for Python
    
    PutItem in the AWS SDK for Ruby V2
    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 exception.
    
    To prevent a new item from replacing an existing item, use a conditional expression that contains the attribute_not_exists function with the name of the attribute being used as the partition key for the table. Since every record must contain that attribute, the attribute_not_exists function will only succeed if no matching item exists.
    
    For more information about PutItem, see Working with Items in the Amazon DynamoDB Developer Guide.
    Parameters:
    
    tableName -
    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.
    
    You must provide all of the attributes for the primary key. For example, with a simple primary key, you only need to provide a value for the partition key. For a composite primary key, you must provide both values for both the partition key and the sort key.
    
    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.
    
    Returns:
    
    putItemResult The response from the PutItem service method, as returned by Amazon DynamoDB.
    
    Throws:
    
    ConditionalCheckFailedException
    
    ProvisionedThroughputExceededException
    
    ResourceNotFoundException
    
    ItemCollectionSizeLimitExceededException
    
    InternalServerErrorException
    
    AmazonClientException - 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 Amazon DynamoDB indicating either a problem with the data in the request, or a server side issue.
  - putItem
```
PutItemResult putItem(java.lang.String tableName,
                      java.util.Map<java.lang.String,AttributeValue> item,
                      java.lang.String returnValues)
               throws AmazonClientException,
                      AmazonServiceException
```
    Creates a new item, or replaces an old item with a new item. If an item that has the same primary key as the new item already exists in the specified table, the new item completely replaces the existing item. You can perform a conditional put operation (add a new item if one with the specified primary key doesn't exist), or replace an existing item if it has certain attribute values. You can return the item's attribute values in the same operation, using the ReturnValues parameter.
    This topic provides general information about the PutItem API.
    
    For information on how to call the PutItem API using the AWS SDK in specific languages, see the following:
    
    PutItem in the AWS Command Line Interface
    
    PutItem in the AWS SDK for .NET
    
    PutItem in the AWS SDK for C++
    
    PutItem in the AWS SDK for Go
    
    PutItem in the AWS SDK for Java
    
    PutItem in the AWS SDK for JavaScript
    
    PutItem in the AWS SDK for PHP V3
    
    PutItem in the AWS SDK for Python
    
    PutItem in the AWS SDK for Ruby V2
    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 exception.
    
    To prevent a new item from replacing an existing item, use a conditional expression that contains the attribute_not_exists function with the name of the attribute being used as the partition key for the table. Since every record must contain that attribute, the attribute_not_exists function will only succeed if no matching item exists.
    
    For more information about PutItem, see Working with Items in the Amazon DynamoDB Developer Guide.
    Parameters:
    
    tableName -
    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.
    
    You must provide all of the attributes for the primary key. For example, with a simple primary key, you only need to provide a value for the partition key. For a composite primary key, you must provide both values for both the partition key and the sort key.
    
    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 setting is the default for ReturnValues.)
    
    ALL_OLD - If PutItem overwrote an attribute name-value pair, then the content of the old item is returned.
    
    The ReturnValues parameter is used by several DynamoDB operations; however, PutItem does not recognize any values other than NONE or ALL_OLD.
    Returns:
    
    putItemResult The response from the PutItem service method, as returned by Amazon DynamoDB.
    
    Throws:
    
    ConditionalCheckFailedException
    
    ProvisionedThroughputExceededException
    
    ResourceNotFoundException
    
    ItemCollectionSizeLimitExceededException
    
    InternalServerErrorException
    
    AmazonClientException - 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 Amazon DynamoDB indicating either a problem with the data in the request, or a server side issue.
  - updateItem
```
UpdateItemResult updateItem(java.lang.String tableName,
                            java.util.Map<java.lang.String,AttributeValue> key,
                            java.util.Map<java.lang.String,AttributeValueUpdate> attributeUpdates)
                     throws AmazonClientException,
                            AmazonServiceException
```
    Edits an existing item's attributes, or adds a new item to the table if it does not already exist. You can put, delete, or add attribute values. You can also perform a conditional update on an existing item (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).
    
    You can also return the item's attribute values in the same UpdateItem operation using the ReturnValues parameter.
    
    Parameters:
    
    tableName -
    The name of the table containing the item to update.
    
    key -
    The primary key of the item to be updated. Each element consists of an attribute name and a value for that attribute.
    
    For the primary key, you must provide all of the attributes. For example, with a simple primary key, you only need to provide a value for the partition key. For a composite primary key, you must provide values for both the partition key and the sort key.
    
    attributeUpdates -
    This is a legacy parameter. Use UpdateExpression instead. For more information, see AttributeUpdates in the Amazon DynamoDB Developer Guide.
    
    Returns:
    
    updateItemResult The response from the UpdateItem service method, as returned by Amazon DynamoDB.
    
    Throws:
    
    ConditionalCheckFailedException
    
    ProvisionedThroughputExceededException
    
    ResourceNotFoundException
    
    ItemCollectionSizeLimitExceededException
    
    InternalServerErrorException
    
    AmazonClientException - 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 Amazon DynamoDB indicating either a problem with the data in the request, or a server side issue.
  - updateItem
```
UpdateItemResult updateItem(java.lang.String tableName,
                            java.util.Map<java.lang.String,AttributeValue> key,
                            java.util.Map<java.lang.String,AttributeValueUpdate> attributeUpdates,
                            java.lang.String returnValues)
                     throws AmazonClientException,
                            AmazonServiceException
```
    Edits an existing item's attributes, or adds a new item to the table if it does not already exist. You can put, delete, or add attribute values. You can also perform a conditional update on an existing item (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).
    
    You can also return the item's attribute values in the same UpdateItem operation using the ReturnValues parameter.
    Parameters:
    
    tableName -
    The name of the table containing the item to update.
    
    key -
    The primary key of the item to be updated. Each element consists of an attribute name and a value for that attribute.
    
    For the primary key, you must provide all of the attributes. For example, with a simple primary key, you only need to provide a value for the partition key. For a composite primary key, you must provide values for both the partition key and the sort key.
    
    attributeUpdates -
    This is a legacy parameter. Use UpdateExpression instead. For more information, see AttributeUpdates in the Amazon DynamoDB Developer Guide.
    returnValues -
    Use ReturnValues if you want to get the item attributes as they appear before or after they are updated. For UpdateItem, the valid values are:
    
    NONE - If ReturnValues is not specified, or if its value is NONE, then nothing is returned. (This setting is the default for ReturnValues.)
    
    ALL_OLD - Returns all of the attributes of the item, as they appeared before the UpdateItem operation.
    
    UPDATED_OLD - Returns only the updated attributes, as they appeared before the UpdateItem operation.
    
    ALL_NEW - Returns all of the attributes of the item, as they appear after the UpdateItem operation.
    
    UPDATED_NEW - Returns only the updated attributes, as they appear after the UpdateItem operation.
    
    There is no additional cost associated with requesting a return value aside from the small network and processing overhead of receiving a larger response. No read capacity units are consumed.
    
    The values returned are strongly consistent.
    Returns:
    
    updateItemResult The response from the UpdateItem service method, as returned by Amazon DynamoDB.
    
    Throws:
    
    ConditionalCheckFailedException
    
    ProvisionedThroughputExceededException
    
    ResourceNotFoundException
    
    ItemCollectionSizeLimitExceededException
    
    InternalServerErrorException
    
    AmazonClientException - 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 Amazon DynamoDB indicating either a problem with the data in the request, or a server side issue.
  - describeTable
```
DescribeTableResult describeTable(java.lang.String tableName)
                           throws AmazonClientException,
                                  AmazonServiceException
```
    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.
    
    If you issue a DescribeTable request immediately after a CreateTable request, DynamoDB might return a ResourceNotFoundException. This is because DescribeTable uses an eventually consistent query, and the metadata for your table might not be available at that moment. Wait for a few seconds, and then try the DescribeTable request again.
    
    Parameters:
    
    tableName -
    The name of the table to describe.
    
    Returns:
    
    describeTableResult The response from the DescribeTable service method, as returned by Amazon DynamoDB.
    
    Throws:
    
    ResourceNotFoundException
    
    InternalServerErrorException
    
    AmazonClientException - 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 Amazon DynamoDB indicating either a problem with the data in the request, or a server side issue.
  - scan
```
ScanResult scan(java.lang.String tableName,
                java.util.List<java.lang.String> attributesToGet)
         throws AmazonClientException,
                AmazonServiceException
```
    The Scan operation returns one or more items and item attributes by accessing every item in a table or a secondary index. To have DynamoDB return fewer items, you can provide a FilterExpression operation.
    
    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 as a LastEvaluatedKey value 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.
    
    A single Scan operation will read up to the maximum number of items set (if using the Limit parameter) or a maximum of 1 MB of data and then apply any filtering to the results using FilterExpression. If LastEvaluatedKey is present in the response, you will need to paginate the result set. For more information, see Paginating the Results in the Amazon DynamoDB Developer Guide.
    
    Scan operations proceed sequentially; however, for faster performance on a large table or secondary index, applications can request a parallel Scan operation by providing the Segment and TotalSegments parameters. For more information, see Parallel Scan in the Amazon DynamoDB Developer Guide.
    
    Scan uses eventually consistent reads when accessing the data in a table; therefore, the result set might not include the changes to data in the table immediately before the operation began. If you need a consistent copy of the data, as of the time that the Scan begins, you can set the ConsistentRead parameter to true.
    
    Parameters:
    
    tableName -
    The name of the table containing the requested items; or, if you provide IndexName, the name of the table to which that index belongs.
    
    attributesToGet -
    This is a legacy parameter. Use ProjectionExpression instead. For more information, see AttributesToGet in the Amazon DynamoDB Developer Guide.
    
    Returns:
    
    scanResult The response from the Scan service method, as returned by Amazon DynamoDB.
    
    Throws:
    
    ProvisionedThroughputExceededException
    
    ResourceNotFoundException
    
    InternalServerErrorException
    
    AmazonClientException - 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 Amazon DynamoDB indicating either a problem with the data in the request, or a server side issue.
  - scan
```
ScanResult scan(java.lang.String tableName,
                java.util.Map<java.lang.String,Condition> scanFilter)
         throws AmazonClientException,
                AmazonServiceException
```
    The Scan operation returns one or more items and item attributes by accessing every item in a table or a secondary index. To have DynamoDB return fewer items, you can provide a FilterExpression operation.
    
    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 as a LastEvaluatedKey value 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.
    
    A single Scan operation will read up to the maximum number of items set (if using the Limit parameter) or a maximum of 1 MB of data and then apply any filtering to the results using FilterExpression. If LastEvaluatedKey is present in the response, you will need to paginate the result set. For more information, see Paginating the Results in the Amazon DynamoDB Developer Guide.
    
    Scan operations proceed sequentially; however, for faster performance on a large table or secondary index, applications can request a parallel Scan operation by providing the Segment and TotalSegments parameters. For more information, see Parallel Scan in the Amazon DynamoDB Developer Guide.
    
    Scan uses eventually consistent reads when accessing the data in a table; therefore, the result set might not include the changes to data in the table immediately before the operation began. If you need a consistent copy of the data, as of the time that the Scan begins, you can set the ConsistentRead parameter to true.
    
    Parameters:
    
    tableName -
    The name of the table containing the requested items; or, if you provide IndexName, the name of the table to which that index belongs.
    
    scanFilter -
    This is a legacy parameter. Use FilterExpression instead. For more information, see ScanFilter in the Amazon DynamoDB Developer Guide.
    
    Returns:
    
    scanResult The response from the Scan service method, as returned by Amazon DynamoDB.
    
    Throws:
    
    ProvisionedThroughputExceededException
    
    ResourceNotFoundException
    
    InternalServerErrorException
    
    AmazonClientException - 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 Amazon DynamoDB indicating either a problem with the data in the request, or a server side issue.
  - scan
```
ScanResult scan(java.lang.String tableName,
                java.util.List<java.lang.String> attributesToGet,
                java.util.Map<java.lang.String,Condition> scanFilter)
         throws AmazonClientException,
                AmazonServiceException
```
    The Scan operation returns one or more items and item attributes by accessing every item in a table or a secondary index. To have DynamoDB return fewer items, you can provide a FilterExpression operation.
    
    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 as a LastEvaluatedKey value 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.
    
    A single Scan operation will read up to the maximum number of items set (if using the Limit parameter) or a maximum of 1 MB of data and then apply any filtering to the results using FilterExpression. If LastEvaluatedKey is present in the response, you will need to paginate the result set. For more information, see Paginating the Results in the Amazon DynamoDB Developer Guide.
    
    Scan operations proceed sequentially; however, for faster performance on a large table or secondary index, applications can request a parallel Scan operation by providing the Segment and TotalSegments parameters. For more information, see Parallel Scan in the Amazon DynamoDB Developer Guide.
    
    Scan uses eventually consistent reads when accessing the data in a table; therefore, the result set might not include the changes to data in the table immediately before the operation began. If you need a consistent copy of the data, as of the time that the Scan begins, you can set the ConsistentRead parameter to true.
    
    Parameters:
    
    tableName -
    The name of the table containing the requested items; or, if you provide IndexName, the name of the table to which that index belongs.
    
    attributesToGet -
    This is a legacy parameter. Use ProjectionExpression instead. For more information, see AttributesToGet in the Amazon DynamoDB Developer Guide.
    
    scanFilter -
    This is a legacy parameter. Use FilterExpression instead. For more information, see ScanFilter in the Amazon DynamoDB Developer Guide.
    
    Returns:
    
    scanResult The response from the Scan service method, as returned by Amazon DynamoDB.
    
    Throws:
    
    ProvisionedThroughputExceededException
    
    ResourceNotFoundException
    
    InternalServerErrorException
    
    AmazonClientException - 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 Amazon DynamoDB indicating either a problem with the data in the request, or a server side issue.
  - deleteItem
```
DeleteItemResult deleteItem(java.lang.String tableName,
                            java.util.Map<java.lang.String,AttributeValue> key)
                     throws AmazonClientException,
                            AmazonServiceException
```
    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 deleting items only if specific conditions are met. If those conditions are met, DynamoDB performs the delete. Otherwise, the item is not deleted.
    
    Parameters:
    
    tableName -
    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.
    
    For the primary key, you must provide all of the attributes. For example, with a simple primary key, you only need to provide a value for the partition key. For a composite primary key, you must provide values for both the partition key and the sort key.
    
    Returns:
    
    deleteItemResult The response from the DeleteItem service method, as returned by Amazon DynamoDB.
    
    Throws:
    
    ConditionalCheckFailedException
    
    ProvisionedThroughputExceededException
    
    ResourceNotFoundException
    
    ItemCollectionSizeLimitExceededException
    
    InternalServerErrorException
    
    AmazonClientException - 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 Amazon DynamoDB indicating either a problem with the data in the request, or a server side issue.
  - deleteItem
```
DeleteItemResult deleteItem(java.lang.String tableName,
                            java.util.Map<java.lang.String,AttributeValue> key,
                            java.lang.String returnValues)
                     throws AmazonClientException,
                            AmazonServiceException
```
    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 deleting items only if specific conditions are met. If those conditions are met, DynamoDB performs the delete. Otherwise, the item is not deleted.
    Parameters:
    
    tableName -
    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.
    
    For the primary key, you must provide all of the attributes. For example, with a simple primary key, you only need to provide a value for the partition key. For a composite primary key, you must provide values for both the partition key and the sort key.
    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 setting is the default for ReturnValues.)
    
    ALL_OLD - The content of the old item is returned.
    
    The ReturnValues parameter is used by several DynamoDB operations; however, DeleteItem does not recognize any values other than NONE or ALL_OLD.
    Returns:
    
    deleteItemResult The response from the DeleteItem service method, as returned by Amazon DynamoDB.
    
    Throws:
    
    ConditionalCheckFailedException
    
    ProvisionedThroughputExceededException
    
    ResourceNotFoundException
    
    ItemCollectionSizeLimitExceededException
    
    InternalServerErrorException
    
    AmazonClientException - 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 Amazon DynamoDB indicating either a problem with the data in the request, or a server side issue.
  - deleteTable
```
DeleteTableResult deleteTable(java.lang.String tableName)
                       throws AmazonClientException,
                              AmazonServiceException
```
    The DeleteTable operation deletes a table and all of its items. After a DeleteTable request, the specified table is in the DELETING state until 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 DynamoDB returns a ResourceInUseException. If the specified table does not exist, DynamoDB returns a ResourceNotFoundException. If table is already in the DELETING state, no error is returned.
    
    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 indexes on that table are also deleted.
    
    If you have DynamoDB Streams enabled on the table, then the corresponding stream on that table goes into the DISABLED state, and the stream is automatically deleted after 24 hours.
    
    Use the DescribeTable action to check the status of the table.
    
    Parameters:
    
    tableName -
    The name of the table to delete.
    
    Returns:
    
    deleteTableResult The response from the DeleteTable service method, as returned by Amazon DynamoDB.
    
    Throws:
    
    ResourceInUseException
    
    ResourceNotFoundException
    
    LimitExceededException
    
    InternalServerErrorException
    
    AmazonClientException - 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 Amazon DynamoDB indicating either a problem with the data in the request, or a server side issue.
  - createTable
```
CreateTableResult createTable(java.util.List<AttributeDefinition> attributeDefinitions,
                              java.lang.String tableName,
                              java.util.List<KeySchemaElement> keySchema,
                              ProvisionedThroughput provisionedThroughput)
                       throws AmazonClientException,
                              AmazonServiceException
```
    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, DynamoDB immediately returns a response with a TableStatus of CREATING. After the table is created, DynamoDB sets the TableStatus to ACTIVE. You can perform read and write operations only on an ACTIVE table.
    
    You can optionally define secondary indexes on the new table, as part of the CreateTable operation. If you want to create multiple tables with secondary indexes on them, you must create the tables sequentially. Only one table with secondary indexes can be in the CREATING state at any given time.
    
    You can use the DescribeTable action to check the table status.
    Parameters:
    
    attributeDefinitions -
    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 a table or an index. 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 - The role that the key attribute will assume:
    
    HASH - partition key
    
    RANGE - sort key
    
    The partition key of an item is also known as its hash attribute. The term "hash attribute" derives from DynamoDB' usage of an internal hash function to evenly distribute data items across partitions, based on their partition key values.
    
    The sort key of an item is also known as its range attribute. The term "range attribute" derives from the way DynamoDB stores items with the same partition key physically close together, in sorted order by the sort key value.
    
    For a simple primary key (partition key), you must provide exactly one element with a KeyType of HASH.
    
    For a composite primary key (partition key and sort key), you must provide 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 -
    Represents the provisioned throughput settings for a specified table or index. 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.
    
    Returns:
    
    createTableResult The response from the CreateTable service method, as returned by Amazon DynamoDB.
    
    Throws:
    
    ResourceInUseException
    
    LimitExceededException
    
    InternalServerErrorException
    
    AmazonClientException - 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 Amazon DynamoDB indicating either a problem with the data in the request, or a server side issue.
  - getItem
```
GetItemResult getItem(java.lang.String tableName,
                      java.util.Map<java.lang.String,AttributeValue> key)
               throws AmazonClientException,
                      AmazonServiceException
```
    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 and there will be no Item element in the response.
    
    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.
    
    Parameters:
    
    tableName -
    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.
    
    For the primary key, you must provide all of the attributes. For example, with a simple primary key, you only need to provide a value for the partition key. For a composite primary key, you must provide values for both the partition key and the sort key.
    
    Returns:
    
    getItemResult The response from the GetItem service method, as returned by Amazon DynamoDB.
    
    Throws:
    
    ProvisionedThroughputExceededException
    
    ResourceNotFoundException
    
    InternalServerErrorException
    
    AmazonClientException - 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 Amazon DynamoDB indicating either a problem with the data in the request, or a server side issue.
  - getItem
```
GetItemResult getItem(java.lang.String tableName,
                      java.util.Map<java.lang.String,AttributeValue> key,
                      java.lang.Boolean consistentRead)
               throws AmazonClientException,
                      AmazonServiceException
```
    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 and there will be no Item element in the response.
    
    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.
    
    Parameters:
    
    tableName -
    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.
    
    For the primary key, you must provide all of the attributes. For example, with a simple primary key, you only need to provide a value for the partition key. For a composite primary key, you must provide values for both the partition key and the sort key.
    
    consistentRead -
    Determines the read consistency model: If set to true, then the operation uses strongly consistent reads; otherwise, the operation uses eventually consistent reads.
    
    Returns:
    
    getItemResult The response from the GetItem service method, as returned by Amazon DynamoDB.
    
    Throws:
    
    ProvisionedThroughputExceededException
    
    ResourceNotFoundException
    
    InternalServerErrorException
    
    AmazonClientException - 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 Amazon DynamoDB indicating either a problem with the data in the request, or a server side issue.
  - listTables
```
ListTablesResult listTables()
                     throws AmazonClientException,
                            AmazonServiceException
```
    Returns an array of table names associated with the current account and endpoint. The output from ListTables is paginated, with each page returning a maximum of 100 table names.
    
    Returns:
    
    listTablesResult The response from the ListTables service method, as returned by Amazon DynamoDB.
    
    Throws:
    
    InternalServerErrorException
    
    AmazonClientException - 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 Amazon DynamoDB indicating either a problem with the data in the request, or a server side issue.
  - listTables
```
ListTablesResult listTables(java.lang.String exclusiveStartTableName)
                     throws AmazonClientException,
                            AmazonServiceException
```
    Returns an array of table names associated with the current account and endpoint. The output from ListTables is paginated, with each page returning a maximum of 100 table names.
    
    Parameters:
    
    exclusiveStartTableName -
    The first table name that this operation will evaluate. Use the value that was returned for LastEvaluatedTableName in a previous operation, so that you can obtain the next page of results.
    
    Returns:
    
    listTablesResult The response from the ListTables service method, as returned by Amazon DynamoDB.
    
    Throws:
    
    InternalServerErrorException
    
    AmazonClientException - 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 Amazon DynamoDB indicating either a problem with the data in the request, or a server side issue.
  - listTables
```
ListTablesResult listTables(java.lang.String exclusiveStartTableName,
                            java.lang.Integer limit)
                     throws AmazonClientException,
                            AmazonServiceException
```
    Returns an array of table names associated with the current account and endpoint. The output from ListTables is paginated, with each page returning a maximum of 100 table names.
    
    Parameters:
    
    exclusiveStartTableName -
    The first table name that this operation will evaluate. Use the value that was returned for LastEvaluatedTableName in a previous operation, so that you can obtain the next page of results.
    
    limit -
    A maximum number of table names to return. If this parameter is not specified, the limit is 100.
    
    Returns:
    
    listTablesResult The response from the ListTables service method, as returned by Amazon DynamoDB.
    
    Throws:
    
    InternalServerErrorException
    
    AmazonClientException - 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 Amazon DynamoDB indicating either a problem with the data in the request, or a server side issue.
  - listTables
```
ListTablesResult listTables(java.lang.Integer limit)
                     throws AmazonClientException,
                            AmazonServiceException
```
    Returns an array of table names associated with the current account and endpoint. The output from ListTables is paginated, with each page returning a maximum of 100 table names.
    
    Parameters:
    
    limit -
    A maximum number of table names to return. If this parameter is not specified, the limit is 100.
    
    Returns:
    
    listTablesResult The response from the ListTables service method, as returned by Amazon DynamoDB.
    
    Throws:
    
    InternalServerErrorException
    
    AmazonClientException - 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 Amazon DynamoDB indicating either a problem with the data in the request, or a server side issue.
  - updateTable
```
UpdateTableResult updateTable(java.lang.String tableName,
                              ProvisionedThroughput provisionedThroughput)
                       throws AmazonClientException,
                              AmazonServiceException
```
    Modifies the provisioned throughput settings, global secondary indexes, or DynamoDB Streams settings for a given table.
    
    You can only perform one of the following operations at once:
    - Modify the provisioned throughput settings of the table.
    - Enable or disable Streams on the table.
    - Remove a global secondary index from the table.
    - Create a new global secondary index on the table. Once the index begins backfilling, you can use UpdateTable to perform other operations.
    UpdateTable is an asynchronous operation; while it is executing, the table status changes from ACTIVE to UPDATING. While it is UPDATING, you cannot issue another UpdateTable request. When the table returns to the ACTIVE state, the UpdateTable operation is complete.
    Parameters:
    
    tableName -
    The name of the table to be updated.
    
    provisionedThroughput -
    The new provisioned throughput settings for the specified table or index.
    
    Returns:
    
    updateTableResult The response from the UpdateTable service method, as returned by Amazon DynamoDB.
    
    Throws:
    
    ResourceInUseException
    
    ResourceNotFoundException
    
    LimitExceededException
    
    InternalServerErrorException
    
    AmazonClientException - 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 Amazon DynamoDB indicating either a problem with the data in the request, or a server side issue.
  - batchGetItem
```
BatchGetItemResult batchGetItem(java.util.Map<java.lang.String,KeysAndAttributes> requestItems,
                                java.lang.String returnConsumedCapacity)
                         throws AmazonClientException,
                                AmazonServiceException
```
    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 16 MB of data, which can contain 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.
    
    If you request more than 100 items BatchGetItem will return a ValidationException with the message "Too many items requested for the BatchGetItem call".
    
    For example, if you ask to retrieve 100 items, but each individual item is 300 KB in size, the system returns 52 items (so as not to exceed the 16 MB limit). It also returns 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 data set.
    
    If none of the items can be processed due to insufficient provisioned throughput on all of the tables in the request, then BatchGetItem will return a ProvisionedThroughputExceededException. If at least one of the items is successfully processed, then BatchGetItem completes successfully, while returning the keys of the unread items in UnprocessedKeys.
    
    If DynamoDB returns any unprocessed items, you should retry the batch operation on those items. However, we strongly recommend that you use an exponential backoff algorithm. If you retry the batch operation immediately, the underlying read or write requests can still fail due to throttling on the individual tables. If you delay the batch operation using exponential backoff, the individual requests in the batch are much more likely to succeed.
    
    For more information, see Batch Operations and Error Handling in the Amazon DynamoDB Developer Guide.
    
    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 retrieves items in parallel.
    
    When designing your application, keep in mind that DynamoDB does not return items in any particular order. To help parse the response by item, include the primary key values for the items in your request in the ProjectionExpression 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.
    Parameters:
    requestItems -
    A map of one or more table names and, for each table, a map that describes one or more items to retrieve from that table. Each table name can be used only once per BatchGetItem request.
    
    Each element in the map of items to retrieve consists of the following:
    
    ConsistentRead - If true, a strongly consistent read is used; if false (the default), an eventually consistent read is used.
    
    ExpressionAttributeNames - One or more substitution tokens for attribute names in the ProjectionExpression parameter. The following are some use cases for using ExpressionAttributeNames :
    
    To access an attribute whose name conflicts with a DynamoDB reserved word.
    
    To create a placeholder for repeating occurrences of an attribute name in an expression.
    
    To prevent special characters in an attribute name from being misinterpreted in an expression.
    
    Use the # character in an expression to dereference an attribute name. For example, consider the following attribute name:
    
    Percentile
    
    The name of this attribute conflicts with a reserved word, so it cannot be used directly in an expression. (For the complete list of reserved words, see Reserved Words in the Amazon DynamoDB Developer Guide). To work around this, you could specify the following for ExpressionAttributeNames:
    
    {"#P":"Percentile"}
    
    You could then use this substitution in an expression, as in this example:
    
    #P = :val
    
    Tokens that begin with the : character are expression attribute values, which are placeholders for the actual value at runtime.
    
    For more information on expression attribute names, see Accessing Item Attributes in the Amazon DynamoDB Developer Guide.
    
    Keys - An array of primary key attribute values that define specific items in the table. For each primary key, you must provide all of the key attributes. For example, with a simple primary key, you only need to provide the partition key value. For a composite key, you must provide both the partition key value and the sort key value.
    
    ProjectionExpression - A string that identifies one or more attributes to retrieve from the table. These attributes can include scalars, sets, or elements of a JSON document. The attributes in the expression must be separated by commas.
    
    If no attribute names are specified, then all attributes will be returned. If any of the requested attributes are not found, they will not appear in the result.
    
    For more information, see Accessing Item Attributes in the Amazon DynamoDB Developer Guide.
    
    AttributesToGet - This is a legacy parameter. Use ProjectionExpression instead. For more information, see AttributesToGet in the Amazon DynamoDB Developer Guide.
    returnConsumedCapacity -
    
    Returns:
    
    batchGetItemResult The response from the BatchGetItem service method, as returned by Amazon DynamoDB.
    
    Throws:
    
    ProvisionedThroughputExceededException
    
    ResourceNotFoundException
    
    InternalServerErrorException
    
    AmazonClientException - 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 Amazon DynamoDB indicating either a problem with the data in the request, or a server side issue.
  - batchGetItem
```
BatchGetItemResult batchGetItem(java.util.Map<java.lang.String,KeysAndAttributes> requestItems)
                         throws AmazonClientException,
                                AmazonServiceException
```
    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 16 MB of data, which can contain 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.
    
    If you request more than 100 items BatchGetItem will return a ValidationException with the message "Too many items requested for the BatchGetItem call".
    
    For example, if you ask to retrieve 100 items, but each individual item is 300 KB in size, the system returns 52 items (so as not to exceed the 16 MB limit). It also returns 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 data set.
    
    If none of the items can be processed due to insufficient provisioned throughput on all of the tables in the request, then BatchGetItem will return a ProvisionedThroughputExceededException. If at least one of the items is successfully processed, then BatchGetItem completes successfully, while returning the keys of the unread items in UnprocessedKeys.
    
    If DynamoDB returns any unprocessed items, you should retry the batch operation on those items. However, we strongly recommend that you use an exponential backoff algorithm. If you retry the batch operation immediately, the underlying read or write requests can still fail due to throttling on the individual tables. If you delay the batch operation using exponential backoff, the individual requests in the batch are much more likely to succeed.
    
    For more information, see Batch Operations and Error Handling in the Amazon DynamoDB Developer Guide.
    
    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 retrieves items in parallel.
    
    When designing your application, keep in mind that DynamoDB does not return items in any particular order. To help parse the response by item, include the primary key values for the items in your request in the ProjectionExpression 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.
    Parameters:
    requestItems -
    A map of one or more table names and, for each table, a map that describes one or more items to retrieve from that table. Each table name can be used only once per BatchGetItem request.
    
    Each element in the map of items to retrieve consists of the following:
    
    ConsistentRead - If true, a strongly consistent read is used; if false (the default), an eventually consistent read is used.
    
    ExpressionAttributeNames - One or more substitution tokens for attribute names in the ProjectionExpression parameter. The following are some use cases for using ExpressionAttributeNames :
    
    To access an attribute whose name conflicts with a DynamoDB reserved word.
    
    To create a placeholder for repeating occurrences of an attribute name in an expression.
    
    To prevent special characters in an attribute name from being misinterpreted in an expression.
    
    Use the # character in an expression to dereference an attribute name. For example, consider the following attribute name:
    
    Percentile
    
    The name of this attribute conflicts with a reserved word, so it cannot be used directly in an expression. (For the complete list of reserved words, see Reserved Words in the Amazon DynamoDB Developer Guide). To work around this, you could specify the following for ExpressionAttributeNames:
    
    {"#P":"Percentile"}
    
    You could then use this substitution in an expression, as in this example:
    
    #P = :val
    
    Tokens that begin with the : character are expression attribute values, which are placeholders for the actual value at runtime.
    
    For more information on expression attribute names, see Accessing Item Attributes in the Amazon DynamoDB Developer Guide.
    
    Keys - An array of primary key attribute values that define specific items in the table. For each primary key, you must provide all of the key attributes. For example, with a simple primary key, you only need to provide the partition key value. For a composite key, you must provide both the partition key value and the sort key value.
    
    ProjectionExpression - A string that identifies one or more attributes to retrieve from the table. These attributes can include scalars, sets, or elements of a JSON document. The attributes in the expression must be separated by commas.
    
    If no attribute names are specified, then all attributes will be returned. If any of the requested attributes are not found, they will not appear in the result.
    
    For more information, see Accessing Item Attributes in the Amazon DynamoDB Developer Guide.
    
    AttributesToGet - This is a legacy parameter. Use ProjectionExpression instead. For more information, see AttributesToGet in the Amazon DynamoDB Developer Guide.
    Returns:
    
    batchGetItemResult The response from the BatchGetItem service method, as returned by Amazon DynamoDB.
    
    Throws:
    
    ProvisionedThroughputExceededException
    
    ResourceNotFoundException
    
    InternalServerErrorException
    
    AmazonClientException - 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 Amazon DynamoDB indicating either a problem with the data in the request, or a server side issue.
  - batchWriteItem
```
BatchWriteItemResult batchWriteItem(java.util.Map<java.lang.String,java.util.List<WriteRequest>> requestItems)
                             throws AmazonClientException,
                                    AmazonServiceException
```
    The BatchWriteItem operation puts or deletes multiple items in one or more tables. A single call to BatchWriteItem can write up to 16 MB of data, which can comprise as many as 25 put or delete requests. Individual items to be written can be as large as 400 KB.
    
    BatchWriteItem cannot update items. To update items, use the UpdateItem action.
    
    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.
    
    Note that if none of the items can be processed due to insufficient provisioned throughput on all of the tables in the request, then BatchWriteItem will return a ProvisionedThroughputExceededException.
    
    If DynamoDB returns any unprocessed items, you should retry the batch operation on those items. However, we strongly recommend that you use an exponential backoff algorithm. If you retry the batch operation immediately, the underlying read or write requests can still fail due to throttling on the individual tables. If you delay the batch operation using exponential backoff, the individual requests in the batch are much more likely to succeed.
    
    For more information, see Batch Operations and Error Handling in the Amazon DynamoDB Developer Guide.
    
    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 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, 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, you must update or delete the specified items one at a time. In both situations, BatchWriteItem 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, 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.
    - Your request contains at least two items with identical hash and range keys (which essentially is two put operations).
    - There are more than 25 requests in the batch.
    - Any individual item in a batch exceeds 400 KB.
    - The total request size exceeds 16 MB.
    Parameters:
    requestItems -
    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. For each primary key, you must provide all of the key attributes. For example, with a simple primary key, you only need to provide a value for the partition key. For a composite primary key, you must provide values for both the partition key and the sort key.
    
    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 exception.
    
    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.
    Returns:
    
    batchWriteItemResult The response from the BatchWriteItem service method, as returned by Amazon DynamoDB.
    
    Throws:
    
    ProvisionedThroughputExceededException
    
    ResourceNotFoundException
    
    ItemCollectionSizeLimitExceededException
    
    InternalServerErrorException
    
    AmazonClientException - 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 Amazon DynamoDB indicating either a problem with the data in the request, or a server side issue.
  - shutdown
```
void shutdown()
```
    Shuts down this client object, releasing any resources that might be held open. This is an optional method, and callers are not expected to call it, but can if they want to explicitly release any open resources. Once a client has been shutdown, it should not be used to make any more requests.
  - getCachedResponseMetadata
```
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. This data isn't considered part of the result data returned by an operation, so it's available through this separate, diagnostic interface.
    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 a request.
    
    Parameters:
    
    request - The originally executed request.
    
    Returns:
    
    The response metadata for the specified request, or null if none is available.

Interface AmazonDynamoDB

Method Summary

Method Detail

setEndpoint

setRegion

batchGetItem

batchWriteItem

createBackup

createGlobalTable

createTable

deleteBackup

deleteItem

deleteTable

describeBackup

describeContinuousBackups

describeEndpoints

describeGlobalTable

describeGlobalTableSettings

describeLimits

describeTable

describeTimeToLive

getItem

listBackups

listGlobalTables

listTables

listTagsOfResource

putItem

query

restoreTableFromBackup

restoreTableToPointInTime

scan

tagResource

untagResource

updateContinuousBackups

updateGlobalTable

updateGlobalTableSettings

updateItem

updateTable

updateTimeToLive

putItem

putItem

updateItem

updateItem

describeTable

scan

scan

scan

deleteItem

deleteItem

deleteTable

createTable

getItem

getItem

listTables

listTables

listTables

listTables

updateTable

batchGetItem

batchGetItem

batchWriteItem

shutdown

getCachedResponseMetadata