org.springframework.batch.integration.async

Class StepExecutionInterceptor

java.lang.Object

org.springframework.batch.integration.async.StepExecutionInterceptor

All Implemented Interfaces:

org.springframework.messaging.support.ChannelInterceptor

public class StepExecutionInterceptor
extends java.lang.Object
implements org.springframework.messaging.support.ChannelInterceptor

A ChannelInterceptor that adds the current StepExecution (if there is one) as a header to the message. Downstream asynchronous handlers can then take advantage of the step context without needing to be step scoped, which is a problem for handlers executing in another thread because the scope context is not available.

Author:

Dave Syer

Field Summary

Fields

Modifier and Type	Field and Description
static java.lang.String	STEP_EXECUTION The name of the header

Constructor Summary

Constructors

Constructor and Description
StepExecutionInterceptor()

Method Summary

Modifier and Type	Method and Description
org.springframework.messaging.Message<?>	preSend(org.springframework.messaging.Message<?> message, org.springframework.messaging.MessageChannel channel)

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.springframework.messaging.support.ChannelInterceptor

afterReceiveCompletion, afterSendCompletion, postReceive, postSend, preReceive

Field Detail

STEP_EXECUTION

public static final java.lang.String STEP_EXECUTION

The name of the header

See Also:

Constant Field Values

Constructor Detail

StepExecutionInterceptor

public StepExecutionInterceptor()

Method Detail

preSend

public org.springframework.messaging.Message<?> preSend(org.springframework.messaging.Message<?> message,
                                                        org.springframework.messaging.MessageChannel channel)

Specified by:

preSend in interface org.springframework.messaging.support.ChannelInterceptor