org.springframework.batch.core.step.tasklet
Interface Tasklet

All Known Implementing Classes:

CallableTaskletAdapter, ChunkOrientedTasklet, MethodInvokingTaskletAdapter, SystemCommandTasklet

public interface Tasklet

Strategy for processing in a step.

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.

Method Detail

execute

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.

Throws:

java.lang.Exception