org.springframework.batch.core.step.item
Class ChunkOrientedTasklet<I>
java.lang.Object
org.springframework.batch.core.step.item.ChunkOrientedTasklet<I>
- Type Parameters:
I
- input item type
- All Implemented Interfaces:
- Tasklet
public class ChunkOrientedTasklet<I>
- extends Object
- implements Tasklet
A Tasklet
implementing variations on read-process-write item
handling.
- Author:
- Dave Syer
Method Summary |
RepeatStatus |
execute(StepContribution contribution,
ChunkContext chunkContext)
Given the current context in the form of a step contribution, do whatever
is necessary to process this unit inside a transaction. |
void |
setBuffering(boolean buffering)
Flag to indicate that items should be buffered once read. |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
ChunkOrientedTasklet
public ChunkOrientedTasklet(ChunkProvider<I> chunkProvider,
ChunkProcessor<I> chunkProcessor)
setBuffering
public void setBuffering(boolean buffering)
- Flag to indicate that items should be buffered once read. Defaults to
true, which is appropriate for forward-only, non-transactional item
readers. Main (or only) use case for setting this flag to false is a
transactional JMS item reader.
- Parameters:
buffering
-
execute
public RepeatStatus execute(StepContribution contribution,
ChunkContext chunkContext)
throws Exception
- Description copied from interface:
Tasklet
- Given the current context in the form of a step contribution, do whatever
is necessary to process this unit inside a transaction. Implementations
return
RepeatStatus.FINISHED
if finished. If not they return
RepeatStatus.CONTINUABLE
. On failure throws an exception.
- Specified by:
execute
in interface Tasklet
- Parameters:
contribution
- mutable state to be passed back to update the current
step executionchunkContext
- attributes shared between invocations but not between
restarts
- Returns:
- an
RepeatStatus
indicating whether processing is
continuable.
- Throws:
Exception
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