org.apache.camel.processor
Class EvaluateExpressionProcessor

java.lang.Object
  org.apache.camel.processor.EvaluateExpressionProcessor

All Implemented Interfaces:

AsyncProcessor, Processor, Traceable

public class EvaluateExpressionProcessor
extends Object
implements AsyncProcessor, Traceable

A Processor which evaluates an Expression and stores the result as a property on the Exchange with the key Exchange.EVALUATE_EXPRESSION_RESULT.

This processor will in case of evaluation exceptions, set the caused exception on the Exchange.

Constructor Summary

EvaluateExpressionProcessor(Expression expression)

Method Summary

String	getTraceLabel() Gets the trace label used for logging when tracing is enabled.
void	process(Exchange exchange) Processes the message exchange
boolean	process(Exchange exchange, AsyncCallback callback) Processes the message exchange.
String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

EvaluateExpressionProcessor

public EvaluateExpressionProcessor(Expression expression)

Method Detail

process

public void process(Exchange exchange)
             throws Exception

Description copied from interface: Processor

Processes the message exchange

Specified by:

process in interface Processor

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

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)

toString

public String toString()

Overrides:

toString in class Object

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

Returns:

the label