org.apache.camel.processor
Class Pipeline

java.lang.Object
  org.apache.camel.support.ServiceSupport
      org.apache.camel.processor.MulticastProcessor
          org.apache.camel.processor.Pipeline

All Implemented Interfaces:

AsyncProcessor, Navigate<Processor>, Processor, Service, ShutdownableService, StatefulService, SuspendableService, Traceable

public class Pipeline
extends MulticastProcessor
implements AsyncProcessor, Traceable

Creates a Pipeline pattern where the output of the previous step is sent as input to the next step, reusing the same message exchanges

Version:

Field Summary

Fields inherited from class org.apache.camel.processor.MulticastProcessor

onPrepare

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

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

Constructor Summary

Pipeline(CamelContext camelContext, Collection<Processor> processors)

Method Summary

protected boolean	continueRouting(Iterator<Processor> it, Exchange exchange)
protected Exchange	createNextExchange(Exchange previousExchange) Strategy method to create the next exchange from the previous exchange.
String	getTraceLabel() Gets the trace label used for logging when tracing is enabled.
static Processor	newInstance(CamelContext camelContext, List<Processor> processors)
void	process(Exchange exchange) Processes the message exchange
boolean	process(Exchange exchange, AsyncCallback callback) Processes the message exchange.
String	toString()

Methods inherited from class org.apache.camel.processor.MulticastProcessor

createAggregateExecutorService, createErrorHandler, createProcessorExchangePair, createProcessorExchangePairs, createUnitOfWorkProcessor, doAggregate, doDone, doProcessParallel, doProcessSequential, doShutdown, doStart, doStop, getAggregationStrategy, getAggregationStrategy, getCamelContext, getExchangeIndex, getProcessors, getTimeout, hasNext, isParallelProcessing, isShareUnitOfWork, isStopOnException, isStreaming, next, prepareSharedUnitOfWork, removeAggregationStrategyFromExchange, setAggregationStrategyOnExchange, setToEndpoint, updateNewExchange

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

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

Methods inherited from class java.lang.Object

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

Constructor Detail

Pipeline

public Pipeline(CamelContext camelContext,
                Collection<Processor> processors)

Method Detail

newInstance

public static Processor newInstance(CamelContext camelContext,
                                    List<Processor> processors)

process

public void process(Exchange exchange)
             throws Exception

Description copied from interface: Processor

Processes the message exchange

Specified by:

process in interface Processor

Overrides:

process in class MulticastProcessor

Parameters:

exchange - the message exchange

Throws:

Exception - if an internal processing error has occurred.

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.

Specified by:

process in interface AsyncProcessor

Overrides:

process in class MulticastProcessor

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

See Also:

AsyncProcessorHelper.process(AsyncProcessor, Exchange, AsyncCallback)

createNextExchange

protected Exchange createNextExchange(Exchange previousExchange)

Strategy method to create the next exchange from the previous exchange.

Remember to copy the original exchange id otherwise correlation of ids in the log is a problem

Parameters:

previousExchange - the previous exchange

Returns:

a new exchange

continueRouting

protected boolean continueRouting(Iterator<Processor> it,
                                  Exchange exchange)

toString

public String toString()

Overrides:

toString in class MulticastProcessor

getTraceLabel

public String getTraceLabel()

Description copied from interface: Traceable

Gets the trace label used for logging when tracing is enabled.

The label should be short and precise.

Specified by:

getTraceLabel in interface Traceable

Overrides:

getTraceLabel in class MulticastProcessor

Returns:

the label