org.springframework.integration.channel
Class ExecutorChannel

java.lang.Object
  org.springframework.integration.context.IntegrationObjectSupport
      org.springframework.integration.channel.AbstractMessageChannel
          org.springframework.integration.channel.AbstractSubscribableChannel
              org.springframework.integration.channel.ExecutorChannel

All Implemented Interfaces:

org.springframework.beans.factory.Aware, org.springframework.beans.factory.BeanFactoryAware, org.springframework.beans.factory.BeanNameAware, org.springframework.beans.factory.InitializingBean, NamedComponent, SubscribableChannel, TrackableComponent, MessageChannel

public class ExecutorChannel
extends AbstractSubscribableChannel

An implementation of MessageChannel that delegates to an instance of UnicastingDispatcher which in turn delegates all dispatching invocations to an Executor.

NOTE: unlike DirectChannel, the ExecutorChannel does not support a shared transactional context between sender and handler, because the Executor typically does not block the sender's Thread since it uses another Thread for the dispatch. (SyncTaskExecutor is an exception but would provide no value for this channel. If synchronous dispatching is required, a DirectChannel should be used instead).

Since:

1.0.3

Author:

Mark Fisher, Gary Russell

Nested Class Summary

Nested classes/interfaces inherited from class org.springframework.integration.channel.AbstractMessageChannel

AbstractMessageChannel.ChannelInterceptorList

Field Summary

Fields inherited from class org.springframework.integration.channel.AbstractMessageChannel

logger

Constructor Summary

ExecutorChannel(java.util.concurrent.Executor executor)
Create an ExecutorChannel that delegates to the provided Executor when dispatching Messages.

ExecutorChannel(java.util.concurrent.Executor executor, LoadBalancingStrategy loadBalancingStrategy)
Create an ExecutorChannel with a LoadBalancingStrategy that delegates to the provided Executor when dispatching Messages.

Method Summary

protected UnicastingDispatcher	getDispatcher()
void	onInit() Subclasses may implement this for initialization logic.
void	setFailover(boolean failover) Specify whether the channel's dispatcher should have failover enabled.
void	setMaxSubscribers(int maxSubscribers) Specify the maximum number of subscribers supported by the channel's dispatcher.

Methods inherited from class org.springframework.integration.channel.AbstractSubscribableChannel

doSend, subscribe, unsubscribe

Methods inherited from class org.springframework.integration.channel.AbstractMessageChannel

addInterceptor, getComponentType, getInterceptors, send, send, setConversionService, setDatatypes, setInterceptors, setShouldTrack

Methods inherited from class org.springframework.integration.context.IntegrationObjectSupport

afterPropertiesSet, getBeanFactory, getComponentName, getConversionService, getTaskScheduler, setBeanFactory, setBeanName, setComponentName, setTaskScheduler, toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.springframework.integration.MessageChannel

send, send

Methods inherited from interface org.springframework.integration.context.NamedComponent

getComponentName

Constructor Detail

ExecutorChannel

public ExecutorChannel(java.util.concurrent.Executor executor)

Create an ExecutorChannel that delegates to the provided Executor when dispatching Messages.

The Executor must not be null.

ExecutorChannel

public ExecutorChannel(java.util.concurrent.Executor executor,
                       LoadBalancingStrategy loadBalancingStrategy)

Create an ExecutorChannel with a LoadBalancingStrategy that delegates to the provided Executor when dispatching Messages.

The Executor must not be null.

Method Detail

setFailover

public void setFailover(boolean failover)

Specify whether the channel's dispatcher should have failover enabled. By default, it will. Set this value to 'false' to disable it.

setMaxSubscribers

public void setMaxSubscribers(int maxSubscribers)

Specify the maximum number of subscribers supported by the channel's dispatcher.

Parameters:

maxSubscribers -

getDispatcher

protected UnicastingDispatcher getDispatcher()

Specified by:

getDispatcher in class AbstractSubscribableChannel

onInit

public final void onInit()

Description copied from class: IntegrationObjectSupport

Subclasses may implement this for initialization logic.

Overrides:

onInit in class IntegrationObjectSupport