Class ChunkOrientedTasklet<I>
java.lang.Object
org.springframework.batch.core.step.item.ChunkOrientedTasklet<I>
- Type Parameters:
I
- input item type
- All Implemented Interfaces:
Tasklet
A
Tasklet
implementing variations on read-process-write item
handling.- Author:
- Dave Syer
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Constructor Summary
ConstructorsConstructorDescriptionChunkOrientedTasklet
(ChunkProvider<I> chunkProvider, ChunkProcessor<I> chunkProcessor) -
Method Summary
Modifier and TypeMethodDescriptionexecute
(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.
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Constructor Details
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ChunkOrientedTasklet
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Method Details
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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
- indicator
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execute
@Nullable 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 returnRepeatStatus.FINISHED
if finished. If not they returnRepeatStatus.CONTINUABLE
. On failure throws an exception.- Specified by:
execute
in interfaceTasklet
- 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. Returningnull
is interpreted asRepeatStatus.FINISHED
- Throws:
Exception
- thrown if error occurs during execution.
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