javax.batch.api.chunk
Class AbstractItemWriter<T>

java.lang.Object
  javax.batch.api.chunk.AbstractItemWriter<T>

Type Parameters:

T - specifies the item type written by the ItemWriter.

All Implemented Interfaces:

ItemWriter<T>

public abstract class AbstractItemWriter<T>
extends Object
implements ItemWriter<T>

The AbstractItemWriter provides default implementations of not commonly implemented methods.

Constructor Summary

AbstractItemWriter()

Method Summary

Serializable	checkpointInfo() Override this method if the ItemWriter supports checkpoints.
void	close() Override this method if the ItemWriter requires any close time processing.
void	open(Serializable checkpoint) Override this method if the ItemWriter requires any open time processing.
abstract void	writeItems(List<T> items) Implement write logic for the ItemWriter in this method.

Methods inherited from class java.lang.Object

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

Constructor Detail

AbstractItemWriter

public AbstractItemWriter()

Method Detail

open

public void open(Serializable checkpoint)
          throws Exception

Override this method if the ItemWriter requires any open time processing. The default implementation does nothing.

Specified by:

open in interface ItemWriter<T>

Parameters:

last - checkpoint for this ItemReader

Throws:

Exception - (or subclass) if an error occurs.

close

public void close()
           throws Exception

Override this method if the ItemWriter requires any close time processing. The default implementation does nothing.

Specified by:

close in interface ItemWriter<T>

Throws:

Exception - (or subclass) if an error occurs.

writeItems

public abstract void writeItems(List<T> items)
                         throws Exception

Implement write logic for the ItemWriter in this method.

Specified by:

writeItems in interface ItemWriter<T>

Parameters:

items - specifies the list of items to write.

Throws:

Exception - (or subclass) if an error occurs.

checkpointInfo

public Serializable checkpointInfo()
                            throws Exception

Override this method if the ItemWriter supports checkpoints. The default implementation returns null.

Specified by:

checkpointInfo in interface ItemWriter<T>

Returns:

checkpoint data

Throws:

Exception - (or subclass) if an error occurs.