AbstractDynamoDBMapper (AWS Java SDK for Amazon DynamoDB 1.11.12 API)

java.lang.Object
- com.amazonaws.services.dynamodbv2.datamodeling.AbstractDynamoDBMapper

All Implemented Interfaces:

IDynamoDBMapper

Direct Known Subclasses:

DynamoDBMapper
```
public class AbstractDynamoDBMapper
extends Object
implements IDynamoDBMapper
```
Abstract implementation of IDynamoDBMapper. Convenient method forms pass through to the corresponding overload that takes a request object, which throws an UnsupportedOperationException.

Constructor Summary

Constructors
Modifier Constructor and Description

protected AbstractDynamoDBMapper()

Constructors
Modifier	Constructor and Description
`protected`	`AbstractDynamoDBMapper()`

Method Summary

Methods
Modifier and Type	Method and Description
`List<DynamoDBMapper.FailedBatch>`	`batchDelete(Iterable<? extends Object> objectsToDelete)` Deletes the objects given using one or more calls to the `AmazonDynamoDB.batchWriteItem(BatchWriteItemRequest)` API.
`List<DynamoDBMapper.FailedBatch>`	`batchDelete(Object... objectsToDelete)` Deletes the objects given using one or more calls to the `AmazonDynamoDB.batchWriteItem(BatchWriteItemRequest)` API.
`Map<String,List<Object>>`	`batchLoad(Iterable<? extends Object> itemsToGet)` Retrieves multiple items from multiple tables using their primary keys.
`Map<String,List<Object>>`	`batchLoad(Iterable<? extends Object> itemsToGet, DynamoDBMapperConfig config)` Retrieves multiple items from multiple tables using their primary keys.
`Map<String,List<Object>>`	`batchLoad(Map<Class<?>,List<KeyPair>> itemsToGet)` Retrieves the attributes for multiple items from multiple tables using their primary keys.
`Map<String,List<Object>>`	`batchLoad(Map<Class<?>,List<KeyPair>> itemsToGet, DynamoDBMapperConfig config)` Retrieves multiple items from multiple tables using their primary keys.
`List<DynamoDBMapper.FailedBatch>`	`batchSave(Iterable<? extends Object> objectsToSave)` Saves the objects given using one or more calls to the `AmazonDynamoDB.batchWriteItem(BatchWriteItemRequest)` API.
`List<DynamoDBMapper.FailedBatch>`	`batchSave(Object... objectsToSave)` Saves the objects given using one or more calls to the `AmazonDynamoDB.batchWriteItem(BatchWriteItemRequest)` API.
`List<DynamoDBMapper.FailedBatch>`	`batchWrite(Iterable<? extends Object> objectsToWrite, Iterable<? extends Object> objectsToDelete)` Saves and deletes the objects given using one or more calls to the `AmazonDynamoDB.batchWriteItem(BatchWriteItemRequest)` API.
`List<DynamoDBMapper.FailedBatch>`	`batchWrite(Iterable<? extends Object> objectsToWrite, Iterable<? extends Object> objectsToDelete, DynamoDBMapperConfig config)` Saves and deletes the objects given using one or more calls to the `AmazonDynamoDB.batchWriteItem(BatchWriteItemRequest)` API.
`int`	`count(Class<?> clazz, DynamoDBScanExpression scanExpression)` Evaluates the specified scan expression and returns the count of matching items, without returning any of the actual item data, using the default configuration.
`int`	`count(Class<?> clazz, DynamoDBScanExpression scanExpression, DynamoDBMapperConfig config)` Evaluates the specified scan expression and returns the count of matching items, without returning any of the actual item data.
`<T> int`	`count(Class<T> clazz, DynamoDBQueryExpression<T> queryExpression)` Evaluates the specified query expression and returns the count of matching items, without returning any of the actual item data, using the default configuration.
`<T> int`	`count(Class<T> clazz, DynamoDBQueryExpression<T> queryExpression, DynamoDBMapperConfig config)` Evaluates the specified query expression and returns the count of matching items, without returning any of the actual item data.
`S3Link`	`createS3Link(Region s3region, String bucketName, String key)` Creates an S3Link with the specified region, bucket name and key.
`S3Link`	`createS3Link(String bucketName, String key)` Creates an S3Link with the specified bucket name and key using the default S3 region.
`void`	`delete(Object object)` Deletes the given object from its DynamoDB table using the default configuration.
`void`	`delete(Object object, DynamoDBDeleteExpression deleteExpression)` Deletes the given object from its DynamoDB table using the specified deleteExpression and default configuration.
`void`	`delete(Object object, DynamoDBMapperConfig config)` Deletes the given object from its DynamoDB table using the specified configuration.
`<T> void`	`delete(T object, DynamoDBDeleteExpression deleteExpression, DynamoDBMapperConfig config)` Deletes the given object from its DynamoDB table using the provided deleteExpression and provided configuration.
`CreateTableRequest`	`generateCreateTableRequest(Class<?> clazz)` Parse the given POJO class and return the CreateTableRequest for the DynamoDB table it represents.
`DeleteTableRequest`	`generateDeleteTableRequest(Class<?> clazz)` Parse the given POJO class and return the DeleteTableRequest for the DynamoDB table it represents.
`S3ClientCache`	`getS3ClientCache()` Returns the underlying `S3ClientCache` for accessing S3.
`<T> T`	`load(Class<T> clazz, Object hashKey)` Loads an object with the hash key given, using the default configuration.
`<T> T`	`load(Class<T> clazz, Object hashKey, DynamoDBMapperConfig config)` Loads an object with the hash key given and a configuration override.
`<T> T`	`load(Class<T> clazz, Object hashKey, Object rangeKey)` Loads an object with a hash and range key, using the default configuration.
`<T> T`	`load(Class<T> clazz, Object hashKey, Object rangeKey, DynamoDBMapperConfig config)` Returns an object with the given hash key, or null if no such object exists.
`<T> T`	`load(T keyObject)` Returns an object whose keys match those of the prototype key object given, or null if no such item exists.
`<T> T`	`load(T keyObject, DynamoDBMapperConfig config)` Returns an object whose keys match those of the prototype key object given, or null if no such item exists.
`<T> T`	`marshallIntoObject(Class<T> clazz, Map<String,AttributeValue> itemAttributes)` Creates and fills in the attributes on an instance of the class given with the attributes given.
`<T> List<T>`	`marshallIntoObjects(Class<T> clazz, List<Map<String,AttributeValue>> itemAttributes)` Unmarshalls the list of item attributes into objects of type clazz.
`<T> PaginatedParallelScanList<T>`	`parallelScan(Class<T> clazz, DynamoDBScanExpression scanExpression, int totalSegments)` Scans through an Amazon DynamoDB table on logically partitioned segments in parallel and returns the matching results in one unmodifiable list of instantiated objects, using the default configuration.
`<T> PaginatedParallelScanList<T>`	`parallelScan(Class<T> clazz, DynamoDBScanExpression scanExpression, int totalSegments, DynamoDBMapperConfig config)` Scans through an Amazon DynamoDB table on logically partitioned segments in parallel.
`<T> PaginatedQueryList<T>`	`query(Class<T> clazz, DynamoDBQueryExpression<T> queryExpression)` Queries an Amazon DynamoDB table and returns the matching results as an unmodifiable list of instantiated objects, using the default configuration.
`<T> PaginatedQueryList<T>`	`query(Class<T> clazz, DynamoDBQueryExpression<T> queryExpression, DynamoDBMapperConfig config)` Queries an Amazon DynamoDB table and returns the matching results as an unmodifiable list of instantiated objects.
`<T> QueryResultPage<T>`	`queryPage(Class<T> clazz, DynamoDBQueryExpression<T> queryExpression)` Queries an Amazon DynamoDB table and returns a single page of matching results.
`<T> QueryResultPage<T>`	`queryPage(Class<T> clazz, DynamoDBQueryExpression<T> queryExpression, DynamoDBMapperConfig config)` Queries an Amazon DynamoDB table and returns a single page of matching results.
`<T> void`	`save(T object)` Saves the object given into DynamoDB, using the default configuration.
`<T> void`	`save(T object, DynamoDBMapperConfig config)` Saves the object given into DynamoDB, using the specified configuration.
`<T> void`	`save(T object, DynamoDBSaveExpression saveExpression)` Saves the object given into DynamoDB, using the default configuration and the specified saveExpression.
`<T> void`	`save(T object, DynamoDBSaveExpression saveExpression, DynamoDBMapperConfig config)` Saves an item in DynamoDB.
`<T> PaginatedScanList<T>`	`scan(Class<T> clazz, DynamoDBScanExpression scanExpression)` Scans through an Amazon DynamoDB table and returns the matching results as an unmodifiable list of instantiated objects, using the default configuration.
`<T> PaginatedScanList<T>`	`scan(Class<T> clazz, DynamoDBScanExpression scanExpression, DynamoDBMapperConfig config)` Scans through an Amazon DynamoDB table and returns the matching results as an unmodifiable list of instantiated objects.
`<T> ScanResultPage<T>`	`scanPage(Class<T> clazz, DynamoDBScanExpression scanExpression)` Scans through an Amazon DynamoDB table and returns a single page of matching results.
`<T> ScanResultPage<T>`	`scanPage(Class<T> clazz, DynamoDBScanExpression scanExpression, DynamoDBMapperConfig config)` Scans through an Amazon DynamoDB table and returns a single page of matching results.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - AbstractDynamoDBMapper
```
protected AbstractDynamoDBMapper()
```
- Method Detail
  - load
```
public <T> T load(Class<T> clazz,
         Object hashKey,
         DynamoDBMapperConfig config)
```
    Description copied from interface: IDynamoDBMapper
    
    Loads an object with the hash key given and a configuration override. This configuration overrides the default provided at object construction.
    
    Specified by:
    
    load in interface IDynamoDBMapper
    
    See Also:
    DynamoDBMapper.load(Class, Object, Object, DynamoDBMapperConfig)
  - load
```
public <T> T load(Class<T> clazz,
         Object hashKey)
```
    Description copied from interface: IDynamoDBMapper
    
    Loads an object with the hash key given, using the default configuration.
    
    Specified by:
    
    load in interface IDynamoDBMapper
    
    See Also:
    DynamoDBMapper.load(Class, Object, Object, DynamoDBMapperConfig)
  - load
```
public <T> T load(Class<T> clazz,
         Object hashKey,
         Object rangeKey)
```
    Description copied from interface: IDynamoDBMapper
    
    Loads an object with a hash and range key, using the default configuration.
    
    Specified by:
    
    load in interface IDynamoDBMapper
    
    See Also:
    DynamoDBMapper.load(Class, Object, Object, DynamoDBMapperConfig)
  - load
```
public <T> T load(T keyObject)
```
    Description copied from interface: IDynamoDBMapper
    
    Returns an object whose keys match those of the prototype key object given, or null if no such item exists.
    
    Specified by:
    
    load in interface IDynamoDBMapper
    
    Parameters:
    keyObject - An object of the class to load with the keys values to match.
    See Also:
    DynamoDBMapper.load(Object, DynamoDBMapperConfig)
  - load
```
public <T> T load(T keyObject,
         DynamoDBMapperConfig config)
```
    Description copied from interface: IDynamoDBMapper
    
    Returns an object whose keys match those of the prototype key object given, or null if no such item exists.
    
    Specified by:
    
    load in interface IDynamoDBMapper
    
    Parameters:
    keyObject - An object of the class to load with the keys values to match.
    config - Configuration for the service call to retrieve the object from DynamoDB. This configuration overrides the default given at construction.
  - load
```
public <T> T load(Class<T> clazz,
         Object hashKey,
         Object rangeKey,
         DynamoDBMapperConfig config)
```
    Description copied from interface: IDynamoDBMapper
    
    Returns an object with the given hash key, or null if no such object exists.
    
    Specified by:
    
    load in interface IDynamoDBMapper
    
    Parameters:
    clazz - The class to load, corresponding to a DynamoDB table.
    hashKey - The key of the object.
    rangeKey - The range key of the object, or null for tables without a range key.
    config - Configuration for the service call to retrieve the object from DynamoDB. This configuration overrides the default given at construction.
  - marshallIntoObject
```
public <T> T marshallIntoObject(Class<T> clazz,
                       Map<String,AttributeValue> itemAttributes)
```
    Description copied from interface: IDynamoDBMapper
    
    Creates and fills in the attributes on an instance of the class given with the attributes given.
    This is accomplished by looking for getter methods annotated with an appropriate annotation, then looking for matching attribute names in the item attribute map.
    This method is no longer called by load/scan/query methods. If you are overriding this method, please switch to using an AttributeTransformer
    
    Specified by:
    
    marshallIntoObject in interface IDynamoDBMapper
    
    Parameters:
    clazz - The class to instantiate and hydrate
    itemAttributes - The set of item attributes, keyed by attribute name.
  - marshallIntoObjects
```
public <T> List<T> marshallIntoObjects(Class<T> clazz,
                              List<Map<String,AttributeValue>> itemAttributes)
```
    Description copied from interface: IDynamoDBMapper
    
    Unmarshalls the list of item attributes into objects of type clazz.
    This method is no longer called by load/scan/query methods. If you are overriding this method, please switch to using an AttributeTransformer
    
    Specified by:
    
    marshallIntoObjects in interface IDynamoDBMapper
    
    See Also:
    DynamoDBMapper.marshallIntoObject(Class, Map)
  - save
```
public <T> void save(T object)
```
    Description copied from interface: IDynamoDBMapper
    
    Saves the object given into DynamoDB, using the default configuration.
    
    Specified by:
    
    save in interface IDynamoDBMapper
    
    See Also:
    DynamoDBMapper.save(Object, DynamoDBSaveExpression, DynamoDBMapperConfig)
  - save
```
public <T> void save(T object,
            DynamoDBSaveExpression saveExpression)
```
    Description copied from interface: IDynamoDBMapper
    
    Saves the object given into DynamoDB, using the default configuration and the specified saveExpression.
    
    Specified by:
    
    save in interface IDynamoDBMapper
    
    See Also:
    DynamoDBMapper.save(Object, DynamoDBSaveExpression, DynamoDBMapperConfig)
  - save
```
public <T> void save(T object,
            DynamoDBMapperConfig config)
```
    Description copied from interface: IDynamoDBMapper
    
    Saves the object given into DynamoDB, using the specified configuration.
    
    Specified by:
    
    save in interface IDynamoDBMapper
    
    See Also:
    DynamoDBMapper.save(Object, DynamoDBSaveExpression, DynamoDBMapperConfig)
  - save
```
public <T> void save(T object,
            DynamoDBSaveExpression saveExpression,
            DynamoDBMapperConfig config)
```
    Description copied from interface: IDynamoDBMapper
    Saves an item in DynamoDB. The service method used is determined by the DynamoDBMapperConfig.getSaveBehavior() value, to use either AmazonDynamoDB.putItem(PutItemRequest) or AmazonDynamoDB.updateItem(UpdateItemRequest):
    - UPDATE (default) : UPDATE will not affect unmodeled attributes on a save operation and a null value for the modeled attribute will remove it from that item in DynamoDB. Because of the limitation of updateItem request, the implementation of UPDATE will send a putItem request when a key-only object is being saved, and it will send another updateItem request if the given key(s) already exists in the table.
    - UPDATE_SKIP_NULL_ATTRIBUTES : Similar to UPDATE except that it ignores any null value attribute(s) and will NOT remove them from that item in DynamoDB. It also guarantees to send only one single updateItem request, no matter the object is key-only or not.
    - CLOBBER : CLOBBER will clear and replace all attributes, included unmodeled ones, (delete and recreate) on save. Versioned field constraints will also be disregarded.
    Any options specified in the saveExpression parameter will be overlaid on any constraints due to versioned attributes.
    Specified by:
    
    save in interface IDynamoDBMapper
    
    Parameters:
    object - The object to save into DynamoDB
    saveExpression - The options to apply to this save request
    config - The configuration to use, which overrides the default provided at object construction.
    See Also:
    DynamoDBMapperConfig.SaveBehavior
  - delete
```
public void delete(Object object)
```
    Description copied from interface: IDynamoDBMapper
    
    Deletes the given object from its DynamoDB table using the default configuration.
    
    Specified by:
    
    delete in interface IDynamoDBMapper
  - delete
```
public void delete(Object object,
          DynamoDBDeleteExpression deleteExpression)
```
    Description copied from interface: IDynamoDBMapper
    
    Deletes the given object from its DynamoDB table using the specified deleteExpression and default configuration.
    
    Specified by:
    
    delete in interface IDynamoDBMapper
  - delete
```
public void delete(Object object,
          DynamoDBMapperConfig config)
```
    Description copied from interface: IDynamoDBMapper
    
    Deletes the given object from its DynamoDB table using the specified configuration.
    
    Specified by:
    
    delete in interface IDynamoDBMapper
  - delete
```
public <T> void delete(T object,
              DynamoDBDeleteExpression deleteExpression,
              DynamoDBMapperConfig config)
```
    Description copied from interface: IDynamoDBMapper
    
    Deletes the given object from its DynamoDB table using the provided deleteExpression and provided configuration. Any options specified in the deleteExpression parameter will be overlaid on any constraints due to versioned attributes.
    
    Specified by:
    
    delete in interface IDynamoDBMapper
    
    deleteExpression - The options to apply to this delete request
    config - Config override object. If DynamoDBMapperConfig.SaveBehavior.CLOBBER is supplied, version fields will not be considered when deleting the object.
  - batchDelete
```
public List<DynamoDBMapper.FailedBatch> batchDelete(Iterable<? extends Object> objectsToDelete)
```
    Description copied from interface: IDynamoDBMapper
    
    Deletes the objects given using one or more calls to the AmazonDynamoDB.batchWriteItem(BatchWriteItemRequest) API. No version checks are performed, as required by the API.
    
    Specified by:
    
    batchDelete in interface IDynamoDBMapper
    
    See Also:
    DynamoDBMapper.batchWrite(Iterable, Iterable)
  - batchDelete
```
public List<DynamoDBMapper.FailedBatch> batchDelete(Object... objectsToDelete)
```
    Description copied from interface: IDynamoDBMapper
    
    Deletes the objects given using one or more calls to the AmazonDynamoDB.batchWriteItem(BatchWriteItemRequest) API. No version checks are performed, as required by the API.
    
    Specified by:
    
    batchDelete in interface IDynamoDBMapper
    
    See Also:
    DynamoDBMapper.batchWrite(Iterable, Iterable)
  - batchSave
```
public List<DynamoDBMapper.FailedBatch> batchSave(Iterable<? extends Object> objectsToSave)
```
    Description copied from interface: IDynamoDBMapper
    
    Saves the objects given using one or more calls to the AmazonDynamoDB.batchWriteItem(BatchWriteItemRequest) API. No version checks are performed, as required by the API.
    This method ignores any SaveBehavior set on the mapper, and always behaves as if SaveBehavior.CLOBBER was specified, as the AmazonDynamoDB.batchWriteItem() request does not support updating existing items.
    This method fails to save the batch if the size of an individual object in the batch exceeds 400 KB. For more information on batch restrictions see, http://docs.aws.amazon .com/amazondynamodb/latest/APIReference/API_BatchWriteItem.html
    
    Specified by:
    
    batchSave in interface IDynamoDBMapper
    
    See Also:
    DynamoDBMapper.batchWrite(Iterable, Iterable)
  - batchSave
```
public List<DynamoDBMapper.FailedBatch> batchSave(Object... objectsToSave)
```
    Description copied from interface: IDynamoDBMapper
    
    Saves the objects given using one or more calls to the AmazonDynamoDB.batchWriteItem(BatchWriteItemRequest) API. No version checks are performed, as required by the API.
    This method ignores any SaveBehavior set on the mapper, and always behaves as if SaveBehavior.CLOBBER was specified, as the AmazonDynamoDB.batchWriteItem() request does not support updating existing items. *
    This method fails to save the batch if the size of an individual object in the batch exceeds 400 KB. For more information on batch restrictions see, http://docs.aws.amazon .com/amazondynamodb/latest/APIReference/API_BatchWriteItem.html
    
    Specified by:
    
    batchSave in interface IDynamoDBMapper
    
    See Also:
    DynamoDBMapper.batchWrite(Iterable, Iterable)
  - batchWrite
```
public List<DynamoDBMapper.FailedBatch> batchWrite(Iterable<? extends Object> objectsToWrite,
                                          Iterable<? extends Object> objectsToDelete)
```
    Description copied from interface: IDynamoDBMapper
    
    Saves and deletes the objects given using one or more calls to the AmazonDynamoDB.batchWriteItem(BatchWriteItemRequest) API. No version checks are performed, as required by the API.
    This method ignores any SaveBehavior set on the mapper, and always behaves as if SaveBehavior.CLOBBER was specified, as the AmazonDynamoDB.batchWriteItem() request does not support updating existing items.
    This method fails to save the batch if the size of an individual object in the batch exceeds 400 KB. For more information on batch restrictions see, http://docs.aws.amazon .com/amazondynamodb/latest/APIReference/API_BatchWriteItem.html
    
    If one of the write requests is for a table that is not present, this method does not throw a ResourceNotFoundException but returns a FailedBatch which includes this exception and the unprocessed items.
    
    Specified by:
    
    batchWrite in interface IDynamoDBMapper
    
    See Also:
    DynamoDBMapper.batchWrite(Iterable, Iterable)
  - batchWrite
```
public List<DynamoDBMapper.FailedBatch> batchWrite(Iterable<? extends Object> objectsToWrite,
                                          Iterable<? extends Object> objectsToDelete,
                                          DynamoDBMapperConfig config)
```
    Description copied from interface: IDynamoDBMapper
    
    Saves and deletes the objects given using one or more calls to the AmazonDynamoDB.batchWriteItem(BatchWriteItemRequest) API. Use mapper config to control the retry strategy when UnprocessedItems are returned by the BatchWriteItem API
    This method fails to save the batch if the size of an individual object in the batch exceeds 400 KB. For more information on batch restrictions see, http://docs.aws.amazon .com/amazondynamodb/latest/APIReference/API_BatchWriteItem.html
    
    If one of the write requests is for a table that is not present, this method does not throw a ResourceNotFoundException but returns a FailedBatch which includes this exception and the unprocessed items.
    
    Specified by:
    
    batchWrite in interface IDynamoDBMapper
    
    Parameters:
    objectsToWrite - A list of objects to save to DynamoDB. No version checks are performed, as required by the AmazonDynamoDB.batchWriteItem(BatchWriteItemRequest) API.
    objectsToDelete - A list of objects to delete from DynamoDB. No version checks are performed, as required by the AmazonDynamoDB.batchWriteItem(BatchWriteItemRequest) API.
    config - Only DynamoDBMapperConfig.getTableNameOverride() and DynamoDBMapperConfig.getBatchWriteRetryStrategy() are considered. If TableNameOverride is specified, all objects in the two parameter lists will be considered to belong to the given table override. In particular, this method always acts as if SaveBehavior.CLOBBER was specified regardless of the value of the config parameter.
    
    Returns:
    A list of failed batches which includes the unprocessed items and the exceptions causing the failure.
    See Also:
    DynamoDBMapperConfig.getTableNameOverride(), DynamoDBMapperConfig.getBatchWriteRetryStrategy()
  - batchLoad
```
public Map<String,List<Object>> batchLoad(Iterable<? extends Object> itemsToGet)
```
    Description copied from interface: IDynamoDBMapper
    
    Retrieves multiple items from multiple tables using their primary keys.
    
    Specified by:
    
    batchLoad in interface IDynamoDBMapper
    
    Returns:
    A map of the loaded objects. Each key in the map is the name of a DynamoDB table. Each value in the map is a list of objects that have been loaded from that table. All objects for each table can be cast to the associated user defined type that is annotated as mapping that table.
    See Also:
    DynamoDBMapper#batchLoad(List, DynamoDBMapperConfig)
  - batchLoad
```
public Map<String,List<Object>> batchLoad(Iterable<? extends Object> itemsToGet,
                                 DynamoDBMapperConfig config)
```
    Description copied from interface: IDynamoDBMapper
    
    Retrieves multiple items from multiple tables using their primary keys.
    
    Specified by:
    
    batchLoad in interface IDynamoDBMapper
    
    Parameters:
    itemsToGet - Key objects, corresponding to the class to fetch, with their primary key values set.
    config - Only DynamoDBMapperConfig.getTableNameOverride() and DynamoDBMapperConfig.getConsistentReads() are considered.
    
    Returns:
    A map of the loaded objects. Each key in the map is the name of a DynamoDB table. Each value in the map is a list of objects that have been loaded from that table. All objects for each table can be cast to the associated user defined type that is annotated as mapping that table.
  - batchLoad
```
public Map<String,List<Object>> batchLoad(Map<Class<?>,List<KeyPair>> itemsToGet)
```
    Description copied from interface: IDynamoDBMapper
    
    Retrieves the attributes for multiple items from multiple tables using their primary keys. AmazonDynamoDB.batchGetItem(BatchGetItemRequest) API.
    
    Specified by:
    
    batchLoad in interface IDynamoDBMapper
    
    Returns:
    A map of the loaded objects. Each key in the map is the name of a DynamoDB table. Each value in the map is a list of objects that have been loaded from that table. All objects for each table can be cast to the associated user defined type that is annotated as mapping that table.
    See Also:
    #batchLoad(List, DynamoDBMapperConfig), IDynamoDBMapper.batchLoad(Map, DynamoDBMapperConfig)
  - batchLoad
```
public Map<String,List<Object>> batchLoad(Map<Class<?>,List<KeyPair>> itemsToGet,
                                 DynamoDBMapperConfig config)
```
    Description copied from interface: IDynamoDBMapper
    
    Retrieves multiple items from multiple tables using their primary keys. Valid only for tables with a single hash key, or a single hash and range key. For other schemas, use DynamoDBMapper#batchLoad(List, DynamoDBMapperConfig)
    
    Specified by:
    
    batchLoad in interface IDynamoDBMapper
    
    Parameters:
    itemsToGet - Map from class to load to list of primary key attributes.
    config - Only DynamoDBMapperConfig.getTableNameOverride() and DynamoDBMapperConfig.getConsistentReads() are considered.
    
    Returns:
    A map of the loaded objects. Each key in the map is the name of a DynamoDB table. Each value in the map is a list of objects that have been loaded from that table. All objects for each table can be cast to the associated user defined type that is annotated as mapping that table.
  - scan
```
public <T> PaginatedScanList<T> scan(Class<T> clazz,
                            DynamoDBScanExpression scanExpression)
```
    Description copied from interface: IDynamoDBMapper
    
    Scans through an Amazon DynamoDB table and returns the matching results as an unmodifiable list of instantiated objects, using the default configuration.
    
    Specified by:
    
    scan in interface IDynamoDBMapper
    
    See Also:
    DynamoDBMapper.scan(Class, DynamoDBScanExpression, DynamoDBMapperConfig)
  - scan
```
public <T> PaginatedScanList<T> scan(Class<T> clazz,
                            DynamoDBScanExpression scanExpression,
                            DynamoDBMapperConfig config)
```
    Description copied from interface: IDynamoDBMapper
    
    Scans through an Amazon DynamoDB table and returns the matching results as an unmodifiable list of instantiated objects. The table to scan is determined by looking at the annotations on the specified class, which declares where to store the object data in Amazon DynamoDB, and the scan expression parameter allows the caller to filter results and control how the scan is executed.
    Callers should be aware that the returned list is unmodifiable, and any attempts to modify the list will result in an UnsupportedOperationException.
    You can specify the pagination loading strategy for this scan operation. By default, the list returned is lazily loaded when possible.
    
    Specified by:
    
    scan in interface IDynamoDBMapper
    
    Type Parameters:
    T - The type of the objects being returned.
    Parameters:
    clazz - The class annotated with DynamoDB annotations describing how to store the object data in Amazon DynamoDB.
    scanExpression - Details on how to run the scan, including any filters to apply to limit results.
    config - The configuration to use for this scan, which overrides the default provided at object construction.
    
    Returns:
    An unmodifiable list of the objects constructed from the results of the scan operation.
    See Also:
    PaginatedScanList, DynamoDBMapperConfig.PaginationLoadingStrategy
  - parallelScan
```
public <T> PaginatedParallelScanList<T> parallelScan(Class<T> clazz,
                                            DynamoDBScanExpression scanExpression,
                                            int totalSegments)
```
    Description copied from interface: IDynamoDBMapper
    
    Scans through an Amazon DynamoDB table on logically partitioned segments in parallel and returns the matching results in one unmodifiable list of instantiated objects, using the default configuration.
    
    Specified by:
    
    parallelScan in interface IDynamoDBMapper
    
    See Also:
    DynamoDBMapper.parallelScan(Class, DynamoDBScanExpression,int, DynamoDBMapperConfig)
  - parallelScan
```
public <T> PaginatedParallelScanList<T> parallelScan(Class<T> clazz,
                                            DynamoDBScanExpression scanExpression,
                                            int totalSegments,
                                            DynamoDBMapperConfig config)
```
    Description copied from interface: IDynamoDBMapper
    
    Scans through an Amazon DynamoDB table on logically partitioned segments in parallel. This method will create a thread pool of the specified size, and each thread will issue scan requests for its assigned segment, following the returned continuation token, until the end of its segment. Callers should be responsible for setting the appropriate number of total segments. More scan segments would result in better performance but more consumed capacity of the table. The results are returned in one unmodifiable list of instantiated objects. The table to scan is determined by looking at the annotations on the specified class, which declares where to store the object data in Amazon DynamoDB, and the scan expression parameter allows the caller to filter results and control how the scan is executed.
    Callers should be aware that the returned list is unmodifiable, and any attempts to modify the list will result in an UnsupportedOperationException.
    You can specify the pagination loading strategy for this parallel scan operation. By default, the list returned is lazily loaded when possible.
    
    Specified by:
    
    parallelScan in interface IDynamoDBMapper
    
    Type Parameters:
    T - The type of the objects being returned.
    Parameters:
    clazz - The class annotated with DynamoDB annotations describing how to store the object data in Amazon DynamoDB.
    scanExpression - Details on how to run the scan, including any filters to apply to limit results.
    totalSegments - Number of total parallel scan segments. Range: 1 - 4096
    config - The configuration to use for this scan, which overrides the default provided at object construction.
    
    Returns:
    An unmodifiable list of the objects constructed from the results of the scan operation.
    See Also:
    PaginatedParallelScanList, DynamoDBMapperConfig.PaginationLoadingStrategy
  - scanPage
```
public <T> ScanResultPage<T> scanPage(Class<T> clazz,
                             DynamoDBScanExpression scanExpression,
                             DynamoDBMapperConfig config)
```
    Description copied from interface: IDynamoDBMapper
    
    Scans through an Amazon DynamoDB table and returns a single page of matching results. The table to scan is determined by looking at the annotations on the specified class, which declares where to store the object data in AWS DynamoDB, and the scan expression parameter allows the caller to filter results and control how the scan is executed.
    
    Specified by:
    
    scanPage in interface IDynamoDBMapper
    
    Type Parameters:
    T - The type of the objects being returned.
    Parameters:
    clazz - The class annotated with DynamoDB annotations describing how to store the object data in Amazon DynamoDB.
    scanExpression - Details on how to run the scan, including any filters to apply to limit results.
    config - The configuration to use for this scan, which overrides the default provided at object construction.
  - scanPage
```
public <T> ScanResultPage<T> scanPage(Class<T> clazz,
                             DynamoDBScanExpression scanExpression)
```
    Description copied from interface: IDynamoDBMapper
    
    Scans through an Amazon DynamoDB table and returns a single page of matching results.
    
    Specified by:
    
    scanPage in interface IDynamoDBMapper
    
    See Also:
    DynamoDBMapper.scanPage(Class, DynamoDBScanExpression, DynamoDBMapperConfig)
  - query
```
public <T> PaginatedQueryList<T> query(Class<T> clazz,
                              DynamoDBQueryExpression<T> queryExpression)
```
    Description copied from interface: IDynamoDBMapper
    
    Queries an Amazon DynamoDB table and returns the matching results as an unmodifiable list of instantiated objects, using the default configuration.
    
    Specified by:
    
    query in interface IDynamoDBMapper
    
    See Also:
    DynamoDBMapper.query(Class, DynamoDBQueryExpression, DynamoDBMapperConfig)
  - query
```
public <T> PaginatedQueryList<T> query(Class<T> clazz,
                              DynamoDBQueryExpression<T> queryExpression,
                              DynamoDBMapperConfig config)
```
    Description copied from interface: IDynamoDBMapper
    
    Queries an Amazon DynamoDB table and returns the matching results as an unmodifiable list of instantiated objects. The table to query is determined by looking at the annotations on the specified class, which declares where to store the object data in Amazon DynamoDB, and the query expression parameter allows the caller to filter results and control how the query is executed.
    When the query is on any local/global secondary index, callers should be aware that the returned object(s) will only contain item attributes that are projected into the index. All the other unprojected attributes will be saved as type default values.
    Callers should also be aware that the returned list is unmodifiable, and any attempts to modify the list will result in an UnsupportedOperationException.
    You can specify the pagination loading strategy for this query operation. By default, the list returned is lazily loaded when possible.
    
    Specified by:
    
    query in interface IDynamoDBMapper
    
    Type Parameters:
    T - The type of the objects being returned.
    Parameters:
    clazz - The class annotated with DynamoDB annotations describing how to store the object data in Amazon DynamoDB.
    queryExpression - Details on how to run the query, including any conditions on the key values
    config - The configuration to use for this query, which overrides the default provided at object construction.
    
    Returns:
    An unmodifiable list of the objects constructed from the results of the query operation.
    See Also:
    PaginatedQueryList, DynamoDBMapperConfig.PaginationLoadingStrategy
  - queryPage
```
public <T> QueryResultPage<T> queryPage(Class<T> clazz,
                               DynamoDBQueryExpression<T> queryExpression)
```
    Description copied from interface: IDynamoDBMapper
    
    Queries an Amazon DynamoDB table and returns a single page of matching results. The table to query is determined by looking at the annotations on the specified class, which declares where to store the object data in Amazon DynamoDB, and the query expression parameter allows the caller to filter results and control how the query is executed.
    
    Specified by:
    
    queryPage in interface IDynamoDBMapper
    
    See Also:
    DynamoDBMapper.queryPage(Class, DynamoDBQueryExpression, DynamoDBMapperConfig)
  - queryPage
```
public <T> QueryResultPage<T> queryPage(Class<T> clazz,
                               DynamoDBQueryExpression<T> queryExpression,
                               DynamoDBMapperConfig config)
```
    Description copied from interface: IDynamoDBMapper
    
    Queries an Amazon DynamoDB table and returns a single page of matching results. The table to query is determined by looking at the annotations on the specified class, which declares where to store the object data in Amazon DynamoDB, and the query expression parameter allows the caller to filter results and control how the query is executed.
    
    Specified by:
    
    queryPage in interface IDynamoDBMapper
    
    Type Parameters:
    T - The type of the objects being returned.
    Parameters:
    clazz - The class annotated with DynamoDB annotations describing how to store the object data in AWS DynamoDB.
    queryExpression - Details on how to run the query, including any conditions on the key values
    config - The configuration to use for this query, which overrides the default provided at object construction.
  - count
```
public int count(Class<?> clazz,
        DynamoDBScanExpression scanExpression)
```
    Description copied from interface: IDynamoDBMapper
    
    Evaluates the specified scan expression and returns the count of matching items, without returning any of the actual item data, using the default configuration.
    
    Specified by:
    
    count in interface IDynamoDBMapper
    
    See Also:
    DynamoDBMapper.count(Class, DynamoDBScanExpression, DynamoDBMapperConfig)
  - count
```
public int count(Class<?> clazz,
        DynamoDBScanExpression scanExpression,
        DynamoDBMapperConfig config)
```
    Description copied from interface: IDynamoDBMapper
    
    Evaluates the specified scan expression and returns the count of matching items, without returning any of the actual item data.
    This operation will scan your entire table, and can therefore be very expensive. Use with caution.
    
    Specified by:
    
    count in interface IDynamoDBMapper
    
    Parameters:
    clazz - The class mapped to a DynamoDB table.
    scanExpression - The parameters for running the scan.
    config - The configuration to use for this scan, which overrides the default provided at object construction.
    
    Returns:
    The count of matching items, without returning any of the actual item data.
  - count
```
public <T> int count(Class<T> clazz,
            DynamoDBQueryExpression<T> queryExpression)
```
    Description copied from interface: IDynamoDBMapper
    
    Evaluates the specified query expression and returns the count of matching items, without returning any of the actual item data, using the default configuration.
    
    Specified by:
    
    count in interface IDynamoDBMapper
    
    See Also:
    DynamoDBMapper.count(Class, DynamoDBQueryExpression, DynamoDBMapperConfig)
  - count
```
public <T> int count(Class<T> clazz,
            DynamoDBQueryExpression<T> queryExpression,
            DynamoDBMapperConfig config)
```
    Description copied from interface: IDynamoDBMapper
    
    Evaluates the specified query expression and returns the count of matching items, without returning any of the actual item data.
    
    Specified by:
    
    count in interface IDynamoDBMapper
    
    Parameters:
    clazz - The class mapped to a DynamoDB table.
    queryExpression - The parameters for running the scan.
    config - The mapper configuration to use for the query, which overrides the default provided at object construction.
    
    Returns:
    The count of matching items, without returning any of the actual item data.
  - getS3ClientCache
```
public S3ClientCache getS3ClientCache()
```
    Description copied from interface: IDynamoDBMapper
    
    Returns the underlying S3ClientCache for accessing S3.
    
    Specified by:
    
    getS3ClientCache in interface IDynamoDBMapper
  - createS3Link
```
public S3Link createS3Link(String bucketName,
                  String key)
```
    Description copied from interface: IDynamoDBMapper
    
    Creates an S3Link with the specified bucket name and key using the default S3 region. This method requires the mapper to have been initialized with the necessary credentials for accessing S3.
    
    Specified by:
    
    createS3Link in interface IDynamoDBMapper
  - createS3Link
```
public S3Link createS3Link(Region s3region,
                  String bucketName,
                  String key)
```
    Description copied from interface: IDynamoDBMapper
    
    Creates an S3Link with the specified region, bucket name and key. This method requires the mapper to have been initialized with the necessary credentials for accessing S3.
    
    Specified by:
    
    createS3Link in interface IDynamoDBMapper
  - generateCreateTableRequest
```
public CreateTableRequest generateCreateTableRequest(Class<?> clazz)
```
    Description copied from interface: IDynamoDBMapper
    
    Parse the given POJO class and return the CreateTableRequest for the DynamoDB table it represents. Note that the returned request does not include the required ProvisionedThroughput parameters for the primary table and the GSIs, and that all secondary indexes are initialized with the default projection type - KEY_ONLY.
    
    Specified by:
    
    generateCreateTableRequest in interface IDynamoDBMapper
  - generateDeleteTableRequest
```
public DeleteTableRequest generateDeleteTableRequest(Class<?> clazz)
```
    Description copied from interface: IDynamoDBMapper
    
    Parse the given POJO class and return the DeleteTableRequest for the DynamoDB table it represents.
    
    Specified by:
    
    generateDeleteTableRequest in interface IDynamoDBMapper

Class AbstractDynamoDBMapper

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

AbstractDynamoDBMapper

Method Detail

load

load

load

load

load

load

marshallIntoObject

marshallIntoObjects

save

save

save

save

delete

delete

delete

delete

batchDelete

batchDelete

batchSave

batchSave

batchWrite

batchWrite

batchLoad

batchLoad

batchLoad

batchLoad

scan

scan

parallelScan

parallelScan

scanPage

scanPage

query

query

queryPage

queryPage

count

count

count

count

getS3ClientCache

createS3Link

createS3Link

generateCreateTableRequest

generateDeleteTableRequest