org.apache.camel.processor.loadbalancer

Class TopicLoadBalancer

java.lang.Object

org.apache.camel.support.ServiceSupport

org.apache.camel.processor.loadbalancer.LoadBalancerSupport

org.apache.camel.processor.loadbalancer.TopicLoadBalancer

All Implemented Interfaces:

AsyncProcessor, Navigate<Processor>, Processor, LoadBalancer, Service, ShutdownableService, HasId, IdAware, StatefulService, SuspendableService

public class TopicLoadBalancer
extends LoadBalancerSupport

A LoadBalancer implementations which sends to all destinations (rather like JMS Topics).

The MulticastProcessor is more powerful as it offers option to run in parallel and decide whether or not to stop on failure etc.

Version:

Field Summary

Fields inherited from class org.apache.camel.processor.loadbalancer.LoadBalancerSupport

log

Fields inherited from class org.apache.camel.support.ServiceSupport

shutdown, shuttingdown, started, starting, stopped, stopping, suspended, suspending

Constructor Summary

Constructors

Constructor and Description
TopicLoadBalancer()

Method Summary

Modifier and Type	Method and Description
protected Exchange	copyExchangeStrategy(Processor processor, Exchange exchange) Strategy method to copy the exchange before sending to another endpoint.
boolean	process(Exchange exchange, AsyncCallback callback) Processes the message exchange.
String	toString()

Methods inherited from class org.apache.camel.processor.loadbalancer.LoadBalancerSupport

addProcessor, doShutdown, doStart, doStop, getId, getProcessors, hasNext, next, process, removeProcessor, setId

Methods inherited from class org.apache.camel.support.ServiceSupport

doResume, doSuspend, getStatus, getVersion, isRunAllowed, isStarted, isStarting, isStopped, isStopping, isStoppingOrStopped, isSuspended, isSuspending, isSuspendingOrSuspended, resume, shutdown, start, stop, suspend

Methods inherited from class java.lang.Object

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

Constructor Detail

TopicLoadBalancer

public TopicLoadBalancer()

Method Detail

process

public boolean process(Exchange exchange,
                       AsyncCallback callback)

Description copied from interface: AsyncProcessor

Processes the message exchange. Similar to Processor.process(org.apache.camel.Exchange), but the caller supports having the exchange asynchronously processed.

If there was a failure processing then the caused Exception would be set on the Exchange.

Parameters:

exchange - the message exchange

callback - the AsyncCallback will be invoked when the processing of the exchange is completed. If the exchange is completed synchronously, then the callback is also invoked synchronously. The callback should therefore be careful of starting recursive loop.

Returns:

(doneSync) true to continue execute synchronously, false to continue being executed asynchronously

copyExchangeStrategy

protected Exchange copyExchangeStrategy(Processor processor,
                                        Exchange exchange)

Strategy method to copy the exchange before sending to another endpoint. Derived classes such as the Pipeline will not clone the exchange

Parameters:

processor - the processor that will send the exchange

exchange - the exchange

Returns:

the current exchange if no copying is required such as for a pipeline otherwise a new copy of the exchange is returned.

toString

public String toString()

Overrides:

toString in class Object