I am trying to retrieve the name of root element to append it separately in
the header as follows:
from("jms:axon-events")
.setHeader("root_element", xpath("name(/*)"))
.process(new Processor() {
public void process(Exchange exchange) throws Exception {
System.out.println("root name : " +
exchange.getIn().getHeader("root_element", String.class));
}
})
.to("jms:streambase-events");
}
});
However, I am getting the following exception:
2013-04-28 17:43:19.436+0100 [Camel (camel-1) thread #0 -
JmsConsumer[axon-events]] WARN o.a.c.c.jms.EndpointMessageListener -
Execution of JMS message listener failed. Caused by:
[org.apache.camel.builder.xml.InvalidXPathExpression - Invalid xpath:
name(/*). Reason: javax.xml.xpath.XPathExpressionException]
org.apache.camel.builder.xml.InvalidXPathExpression: Invalid xpath:
name(/*). Reason: javax.xml.xpath.XPathExpressionException
at
org.apache.camel.builder.xml.XPathBuilder.doInEvaluateAs(XPathBuilder.java:873)
~[camel-core-2.10.4.jar:2.10.4]
at
org.apache.camel.builder.xml.XPathBuilder.evaluateAs(XPathBuilder.java:756)
~[camel-core-2.10.4.jar:2.10.4]
at
org.apache.camel.builder.xml.XPathBuilder.evaluate(XPathBuilder.java:726)
~[camel-core-2.10.4.jar:2.10.4]
at
org.apache.camel.builder.xml.XPathBuilder.evaluate(XPathBuilder.java:154)
~[camel-core-2.10.4.jar:2.10.4]
at
org.apache.camel.builder.ProcessorBuilder$4.process(ProcessorBuilder.java:96)
~[camel-core-2.10.4.jar:2.10.4]
at
org.apache.camel.util.AsyncProcessorConverterHelper$ProcessorToAsyncProcessorBridge.process(AsyncProcessorConverterHelper.java:61)
~[camel-core-2.10.4.jar:2.10.4]
at
org.apache.camel.util.AsyncProcessorHelper.process(AsyncProcessorHelper.java:73)
~[camel-core-2.10.4.jar:2.10.4]
at
org.apache.camel.processor.DelegateAsyncProcessor.processNext(DelegateAsyncProcessor.java:99)
~[camel-core-2.10.4.jar:2.10.4]
at
org.apache.camel.processor.DelegateAsyncProcessor.process(DelegateAsyncProcessor.java:90)
~[camel-core-2.10.4.jar:2.10.4]
at
org.apache.camel.management.InstrumentationProcessor.process(InstrumentationProcessor.java:72)
~[camel-core-2.10.4.jar:2.10.4]
at
org.apache.camel.util.AsyncProcessorHelper.process(AsyncProcessorHelper.java:73)
~[camel-core-2.10.4.jar:2.10.4]
at
org.apache.camel.processor.DelegateAsyncProcessor.processNext(DelegateAsyncProcessor.java:99)
~[camel-core-2.10.4.jar:2.10.4]
at
org.apache.camel.processor.DelegateAsyncProcessor.process(DelegateAsyncProcessor.java:90)
~[camel-core-2.10.4.jar:2.10.4]
at
org.apache.camel.processor.interceptor.TraceInterceptor.process(TraceInterceptor.java:91)
~[camel-core-2.10.4.jar:2.10.4]
at
org.apache.camel.util.AsyncProcessorHelper.process(AsyncProcessorHelper.java:73)
~[camel-core-2.10.4.jar:2.10.4]
at
org.apache.camel.processor.RedeliveryErrorHandler.processErrorHandler(RedeliveryErrorHandler.java:334)
~[camel-core-2.10.4.jar:2.10.4]
at
org.apache.camel.processor.RedeliveryErrorHandler.process(RedeliveryErrorHandler.java:220)
~[camel-core-2.10.4.jar:2.10.4]
at
org.apache.camel.processor.RouteContextProcessor.processNext(RouteContextProcessor.java:46)
~[camel-core-2.10.4.jar:2.10.4]
at
org.apache.camel.processor.DelegateAsyncProcessor.process(DelegateAsyncProcessor.java:90)
~[camel-core-2.10.4.jar:2.10.4]
at
org.apache.camel.processor.interceptor.DefaultChannel.process(DefaultChannel.java:308)
~[camel-core-2.10.4.jar:2.10.4]
at
org.apache.camel.util.AsyncProcessorHelper.process(AsyncProcessorHelper.java:73)
~[camel-core-2.10.4.jar:2.10.4]
at org.apache.camel.processor.Pipeline.process(Pipeline.java:117)
~[camel-core-2.10.4.jar:2.10.4]
at org.apache.camel.processor.Pipeline.process(Pipeline.java:80)
~[camel-core-2.10.4.jar:2.10.4]
at
org.apache.camel.processor.RouteContextProcessor.processNext(RouteContextProcessor.java:46)
~[camel-core-2.10.4.jar:2.10.4]
at
org.apache.camel.processor.DelegateAsyncProcessor.process(DelegateAsyncProcessor.java:90)
~[camel-core-2.10.4.jar:2.10.4]
at
org.apache.camel.processor.UnitOfWorkProcessor.processAsync(UnitOfWorkProcessor.java:150)
~[camel-core-2.10.4.jar:2.10.4]
at
org.apache.camel.processor.UnitOfWorkProcessor.process(UnitOfWorkProcessor.java:117)
~[camel-core-2.10.4.jar:2.10.4]
at
org.apache.camel.processor.RouteInflightRepositoryProcessor.processNext(RouteInflightRepositoryProcessor.java:48)
~[camel-core-2.10.4.jar:2.10.4]
at
org.apache.camel.processor.DelegateAsyncProcessor.process(DelegateAsyncProcessor.java:90)
~[camel-core-2.10.4.jar:2.10.4]
at
org.apache.camel.util.AsyncProcessorHelper.process(AsyncProcessorHelper.java:73)
~[camel-core-2.10.4.jar:2.10.4]
at
org.apache.camel.processor.DelegateAsyncProcessor.processNext(DelegateAsyncProcessor.java:99)
~[camel-core-2.10.4.jar:2.10.4]
at
org.apache.camel.processor.DelegateAsyncProcessor.process(DelegateAsyncProcessor.java:90)
~[camel-core-2.10.4.jar:2.10.4]
at
org.apache.camel.management.InstrumentationProcessor.process(InstrumentationProcessor.java:72)
~[camel-core-2.10.4.jar:2.10.4]
at
org.apache.camel.util.AsyncProcessorHelper.process(AsyncProcessorHelper.java:99)
~[camel-core-2.10.4.jar:2.10.4]
at
org.apache.camel.processor.DelegateAsyncProcessor.process(DelegateAsyncProcessor.java:86)
~[camel-core-2.10.4.jar:2.10.4]
at
org.apache.camel.component.jms.EndpointMessageListener.onMessage(EndpointMessageListener.java:104)
~[camel-jms-2.10.4.jar:2.10.4]
at
org.springframework.jms.listener.AbstractMessageListenerContainer.doInvokeListener(AbstractMessageListenerContainer.java:560)
~[spring-jms-3.0.7.RELEASE.jar:3.0.7.RELEASE]
at
org.springframework.jms.listener.AbstractMessageListenerContainer.invokeListener(AbstractMessageListenerContainer.java:498)
~[spring-jms-3.0.7.RELEASE.jar:3.0.7.RELEASE]
at
org.springframework.jms.listener.AbstractMessageListenerContainer.doExecuteListener(AbstractMessageListenerContainer.java:467)
~[spring-jms-3.0.7.RELEASE.jar:3.0.7.RELEASE]
at
org.springframework.jms.listener.AbstractPollingMessageListenerContainer.doReceiveAndExecute(AbstractPollingMessageListenerContainer.java:325)
[spring-jms-3.0.7.RELEASE.jar:3.0.7.RELEASE]
at
org.springframework.jms.listener.AbstractPollingMessageListenerContainer.receiveAndExecute(AbstractPollingMessageListenerContainer.java:263)
[spring-jms-3.0.7.RELEASE.jar:3.0.7.RELEASE]
at
org.springframework.jms.listener.DefaultMessageListenerContainer$AsyncMessageListenerInvoker.invokeListener(DefaultMessageListenerContainer.java:1058)
[spring-jms-3.0.7.RELEASE.jar:3.0.7.RELEASE]
at
org.springframework.jms.listener.DefaultMessageListenerContainer$AsyncMessageListenerInvoker.executeOngoingLoop(DefaultMessageListenerContainer.java:1050)
[spring-jms-3.0.7.RELEASE.jar:3.0.7.RELEASE]
at
org.springframework.jms.listener.DefaultMessageListenerContainer$AsyncMessageListenerInvoker.run(DefaultMessageListenerContainer.java:947)
[spring-jms-3.0.7.RELEASE.jar:3.0.7.RELEASE]
at
java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
[na:1.6.0_37]
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
[na:1.6.0_37]
at java.lang.Thread.run(Thread.java:662) [na:1.6.0_37]
Caused by: javax.xml.xpath.XPathExpressionException: null
at
com.sun.org.apache.xpath.internal.jaxp.XPathExpressionImpl.evaluate(XPathExpressionImpl.java:196)
~[na:1.6.0_37]
at
org.apache.camel.builder.xml.XPathBuilder.doInEvaluateAs(XPathBuilder.java:859)
~[camel-core-2.10.4.jar:2.10.4]
... 46 common frames omitted
Caused by: com.sun.org.apache.xpath.internal.XPathException: Can not convert
#STRING to a NodeList!
at
com.sun.org.apache.xpath.internal.objects.XObject.error(XObject.java:703)
~[na:1.6.0_37]
at
com.sun.org.apache.xpath.internal.objects.XObject.nodelist(XObject.java:449)
~[na:1.6.0_37]
at
com.sun.org.apache.xpath.internal.jaxp.XPathExpressionImpl.getResultAsType(XPathExpressionImpl.java:356)
~[na:1.6.0_37]
at
com.sun.org.apache.xpath.internal.jaxp.XPathExpressionImpl.eval(XPathExpressionImpl.java:102)
~[na:1.6.0_37]
at
com.sun.org.apache.xpath.internal.jaxp.XPathExpressionImpl.evaluate(XPathExpressionImpl.java:183)
~[na:1.6.0_37]
... 47 common frames omitted
Can anyone help?
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