org.springframework.batch.integration.async
Class StepExecutionInterceptor

java.lang.Object
  org.springframework.integration.channel.interceptor.ChannelInterceptorAdapter
      org.springframework.batch.integration.async.StepExecutionInterceptor

All Implemented Interfaces:

org.springframework.integration.channel.ChannelInterceptor

public class StepExecutionInterceptor
extends org.springframework.integration.channel.interceptor.ChannelInterceptorAdapter

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

static String

STEP_EXECUTION The name of the header

Constructor Summary

StepExecutionInterceptor()

Method Summary

org.springframework.integration.Message<?>

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

Methods inherited from class org.springframework.integration.channel.interceptor.ChannelInterceptorAdapter

postReceive, postSend, preReceive

Methods inherited from class java.lang.Object

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

Field Detail

STEP_EXECUTION

public static final String STEP_EXECUTION

The name of the header

See Also:

Constant Field Values

Constructor Detail

StepExecutionInterceptor

public StepExecutionInterceptor()

Method Detail

preSend

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

Specified by:

preSend in interface org.springframework.integration.channel.ChannelInterceptor

Overrides:

preSend in class org.springframework.integration.channel.interceptor.ChannelInterceptorAdapter