org.springframework.batch.jsr.item

Class ItemWriterAdapter<T>

java.lang.Object

org.springframework.batch.item.ItemStreamSupport

org.springframework.batch.jsr.item.CheckpointSupport

org.springframework.batch.jsr.item.ItemWriterAdapter<T>

All Implemented Interfaces:

ItemStream, ItemWriter<T>

public class ItemWriterAdapter<T>
extends CheckpointSupport
implements ItemWriter<T>

Adapter that wraps an ItemWriter for use by Spring Batch. All calls are delegated as appropriate to the corresponding method on the delegate.

Since:

3.0

Author:

Michael Minella

Constructor Summary

Constructors

Constructor and Description
ItemWriterAdapter(javax.batch.api.chunk.ItemWriter writer)

Method Summary

Modifier and Type	Method and Description
protected java.io.Serializable	doCheckpoint() Used to provide a Serializable representing the current state of the batch artifact.
protected void	doClose() Used to close the underlying batch artifact
protected void	doOpen(java.io.Serializable checkpoint) Used to open a batch artifact with previously saved checkpoint information.
void	write(java.util.List<? extends T> items) Process the supplied data element.

Methods inherited from class org.springframework.batch.jsr.item.CheckpointSupport

close, open, update

Methods inherited from class org.springframework.batch.item.ItemStreamSupport

getExecutionContextKey, setExecutionContextName, setName

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

ItemWriterAdapter

public ItemWriterAdapter(javax.batch.api.chunk.ItemWriter writer)

Parameters:

writer - a ItemWriter to delegate calls to

Method Detail

write

public void write(java.util.List<? extends T> items)
           throws java.lang.Exception

Description copied from interface: ItemWriter

Process the supplied data element. Will not be called with any null items in normal operation.

Specified by:

write in interface ItemWriter<T>

Parameters:

items - items to be written

Throws:

java.lang.Exception - if there are errors. The framework will catch the exception and convert or rethrow it as appropriate.

doOpen

protected void doOpen(java.io.Serializable checkpoint)
               throws java.lang.Exception

Description copied from class: CheckpointSupport

Used to open a batch artifact with previously saved checkpoint information.

Specified by:

doOpen in class CheckpointSupport

Parameters:

checkpoint - previously saved checkpoint object

Throws:

java.lang.Exception - thrown by the implementation

doCheckpoint

protected java.io.Serializable doCheckpoint()
                                     throws java.lang.Exception

Description copied from class: CheckpointSupport

Used to provide a Serializable representing the current state of the batch artifact.

Specified by:

doCheckpoint in class CheckpointSupport

Returns:

the current state of the batch artifact

Throws:

java.lang.Exception - thrown by the implementation

doClose

protected void doClose()
                throws java.lang.Exception

Description copied from class: CheckpointSupport

Used to close the underlying batch artifact

Specified by:

doClose in class CheckpointSupport

Throws:

java.lang.Exception - thrown by the underlying implementation