org.springframework.batch.core
Interface ItemProcessListener<T,S>

All Superinterfaces:

StepListener

All Known Implementing Classes:

CompositeItemProcessListener, DefaultItemFailureHandler, ItemListenerSupport, MulticasterBatchListener, StepListenerSupport

public interface ItemProcessListener<T,S>
extends StepListener

Listener interface for the processing of an item. Implementations of this interface will be notified before and after an item is passed to the ItemProcessor and in the event of any exceptions thrown by the processor.

Author:

Dave Syer

Method Summary

void	afterProcess(T item, S result) Called after ItemProcessor.process(Object) returns.
void	beforeProcess(T item) Called before ItemProcessor.process(Object).
void	onProcessError(T item, Exception e) Called if an exception was thrown from ItemProcessor.process(Object).

Method Detail

beforeProcess

void beforeProcess(T item)

Called before ItemProcessor.process(Object).

Parameters:

item - to be processed.

afterProcess

void afterProcess(T item,
                  S result)

Called after ItemProcessor.process(Object) returns. If the processor returns null, this method will still be called, with a null result, allowing for notification of 'filtered' items.

Parameters:

item - to be processed

result - of processing

onProcessError

void onProcessError(T item,
                    Exception e)

Called if an exception was thrown from ItemProcessor.process(Object).

Parameters:

item - attempted to be processed

e - - exception thrown during processing.