javax.batch.api.chunk.listener
Class AbstractItemProcessListener<T,R>

java.lang.Object
  javax.batch.api.chunk.listener.AbstractItemProcessListener<T,R>

Type Parameters:

T - specifies the item type read by the ItemProcessor paired with this ItemProcessListener.

R - specifies the item type returned by the ItemProcessor paired with this ItemProcessListener.

All Implemented Interfaces:

ItemProcessListener<T,R>

public abstract class AbstractItemProcessListener<T,R>
extends Object
implements ItemProcessListener<T,R>

The AbstractItemProcessListener provides default implementations of less commonly implemented methods.

Constructor Summary

AbstractItemProcessListener()

Method Summary

void	afterProcess(T item, R result) Override this method if the ItemProcessListener will do something after the item is processed.
void	beforeProcess(T item) Override this method if the ItemProcessListener will do something before the item is processed.
void	onProcessError(T item, Exception ex) Override this method if the ItemProcessListener will do something when the ItemProcessor processItem method throws an exception.

Methods inherited from class java.lang.Object

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

Constructor Detail

AbstractItemProcessListener

public AbstractItemProcessListener()

Method Detail

beforeProcess

public void beforeProcess(T item)
                   throws Exception

Override this method if the ItemProcessListener will do something before the item is processed. The default implementation does nothing.

Specified by:

beforeProcess in interface ItemProcessListener<T,R>

Parameters:

item - specifies the item about to be processed.

Throws:

Exception - (or subclass) if an error occurs.

afterProcess

public void afterProcess(T item,
                         R result)
                  throws Exception

Override this method if the ItemProcessListener will do something after the item is processed. The default implementation does nothing.

Specified by:

afterProcess in interface ItemProcessListener<T,R>

Parameters:

item - specifies the item about to be processed.

result - specifies the item to pass to the item writer.

Throws:

Exception - (or subclass) if an error occurs.

onProcessError

public void onProcessError(T item,
                           Exception ex)
                    throws Exception

Override this method if the ItemProcessListener will do something when the ItemProcessor processItem method throws an exception. The default implementation does nothing.

Specified by:

onProcessError in interface ItemProcessListener<T,R>

Parameters:

item - specifies the item about to be processed.

ex - specifies the exception thrown by the item processor.

Throws:

Exception - (or subclass) if an error occurs.