Package org.springframework.batch.core.step.tasklet

Class CallableTaskletAdapter

java.lang.Object

org.springframework.batch.core.step.tasklet.CallableTaskletAdapter

All Implemented Interfaces:

Tasklet, org.springframework.beans.factory.InitializingBean

public class CallableTaskletAdapter
extends Object
implements Tasklet, org.springframework.beans.factory.InitializingBean

Adapts a Callable<RepeatStatus> to the Tasklet interface.

Author:

Dave Syer, Mahmoud Ben Hassine

Constructor Summary

Constructors

Constructor	Description
CallableTaskletAdapter()	Create a new CallableTaskletAdapter instance.
CallableTaskletAdapter(Callable<RepeatStatus> callable)	Create a new CallableTaskletAdapter instance.

Method Summary

Modifier and Type	Method	Description
void	afterPropertiesSet()	Assert that the callable is set.
RepeatStatus	execute(StepContribution contribution, ChunkContext chunkContext)	Execute the provided Callable and return its RepeatStatus.
void	setCallable(Callable<RepeatStatus> callable)	Public setter for the Callable.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

CallableTaskletAdapter

public CallableTaskletAdapter()

Create a new CallableTaskletAdapter instance.

Since:

5.1

CallableTaskletAdapter

public CallableTaskletAdapter(Callable<RepeatStatus> callable)

Create a new CallableTaskletAdapter instance.

Parameters:

callable - the Callable to use

Since:

5.1

Method Details

setCallable

public void setCallable(Callable<RepeatStatus> callable)

Public setter for the Callable.

Parameters:

callable - the Callable to set

afterPropertiesSet

public void afterPropertiesSet()

Assert that the callable is set.

Specified by:

afterPropertiesSet in interface org.springframework.beans.factory.InitializingBean

See Also:

• InitializingBean.afterPropertiesSet()

execute

@Nullable
public RepeatStatus execute(StepContribution contribution,
 ChunkContext chunkContext)
                     throws Exception

Execute the provided Callable and return its RepeatStatus. Ignores the StepContribution and the attributes.

Specified by:

execute in interface Tasklet

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:

Exception - thrown if error occurs during execution.

See Also:

• Tasklet.execute(StepContribution, ChunkContext)