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

All Superinterfaces:

StepListener

All Known Implementing Classes:

CompositeSkipListener, MulticasterBatchListener, SkipListenerSupport, StepListenerSupport

public interface SkipListener<T,S>
extends StepListener

Interface for listener to skipped items. Callbacks will be called by Step implementations at the appropriate time in the step lifecycle. Implementers of this interface should not assume that any method will be called immediately after an error has been encountered. Because there may be errors later on in processing the chunk, this listener will not be called until just before committing.

Author:

Dave Syer, Robert Kasanicky

Method Summary

void	onSkipInProcess(T item, Throwable t) This item failed on processing with the given exception, and a skip was called for.
void	onSkipInRead(Throwable t) Callback for a failure on read that is legal, so is not going to be re-thrown.
void	onSkipInWrite(S item, Throwable t) This item failed on write with the given exception, and a skip was called for.

Method Detail

onSkipInRead

void onSkipInRead(Throwable t)

Callback for a failure on read that is legal, so is not going to be re-thrown. In case transaction is rolled back and items are re-read, this callback will occur repeatedly for the same cause. This will only happen if read items are not buffered.

Parameters:

t - cause of the failure

onSkipInWrite

void onSkipInWrite(S item,
                   Throwable t)

This item failed on write with the given exception, and a skip was called for.

Parameters:

item - the failed item

t - the cause of the failure

onSkipInProcess

void onSkipInProcess(T item,
                     Throwable t)

This item failed on processing with the given exception, and a skip was called for.

Parameters:

item - the failed item

t - the cause of the failure