ChunkListener (Spring Batch 4.1.4.RELEASE API)

All Superinterfaces:
StepListener
All Known Implementing Classes:
ChunkListenerAdapter, ChunkListenerSupport, CompositeChunkListener, MulticasterBatchListener, PartitionCollectorAdapter, StagingItemListener, StepListenerSupport
```
public interface ChunkListener
extends StepListener
```
Listener interface for the lifecycle of a chunk. A chunk can be thought of as a collection of items that will be committed together.
Author:
Lucas Ward, Michael Minella, Mahmoud Ben Hassine

Field Summary
Fields
Modifier and Type Field Description
static java.lang.String ROLLBACK_EXCEPTION_KEY

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`void`	`afterChunk(ChunkContext context)`	Callback after the chunk is executed, outside the transaction.
`void`	`afterChunkError(ChunkContext context)`	Callback after a chunk has been marked for rollback.
`void`	`beforeChunk(ChunkContext context)`	Callback before the chunk is executed, but inside the transaction.

- Field Detail
  - ROLLBACK_EXCEPTION_KEY
```
static final java.lang.String ROLLBACK_EXCEPTION_KEY
```
    See Also:
    Constant Field Values
- Method Detail
  - beforeChunk
```
void beforeChunk(ChunkContext context)
```
    Callback before the chunk is executed, but inside the transaction.
    Parameters:
    context - The current ChunkContext
  - afterChunk
```
void afterChunk(ChunkContext context)
```
    Callback after the chunk is executed, outside the transaction.
    Parameters:
    context - The current ChunkContext
  - afterChunkError
```
void afterChunkError(ChunkContext context)
```
    Callback after a chunk has been marked for rollback. It is invoked after transaction rollback. While the rollback will have occurred, transactional resources might still be active and accessible. Due to this, data access code within this callback will still "participate" in the original transaction unless it declares that it runs in its own transaction. Hence: Use PROPAGATION_REQUIRES_NEW for any transactional operation that is called from here.
    Parameters:
    context - the chunk context containing the exception that caused the underlying rollback.