Tasklet (Spring Batch 4.1.4.RELEASE API)

All Known Subinterfaces:
StoppableTasklet
All Known Implementing Classes:
BatchletAdapter, CallableTaskletAdapter, ChunkOrientedTasklet, JsrSampleTasklet, MethodInvokingTaskletAdapter, SleepingTasklet, SystemCommandTasklet
```
public interface Tasklet
```
Strategy for processing in a step.
Author:
Dave Syer, Mahmoud Ben Hassine

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`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.

- Method Detail
  - execute
```
@Nullable
RepeatStatus execute(StepContribution contribution,
                     ChunkContext chunkContext)
              throws java.lang.Exception
```
    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.
    Parameters:
    contribution - mutable state to be passed back to update the current step execution
    chunkContext - attributes shared between invocations but not between restarts
    Returns:
    an RepeatStatus indicating whether processing is continuable. Returning null is interpreted as RepeatStatus.FINISHED
    Throws:
    java.lang.Exception - thrown if error occurs during execution.