Invoke an external web service

[agusgr]

Hello,
I have deployed the helloWorld example ant it works, but now I'm trying to develop a bpel process with an invocation to a external web service.
I deploy de procces and when I test it, an exception occurs.

2007-02-20 09:00:58,656 DEBUG [org.jbpm.bpel.integration.jms.StartListener] caught exception while passing control to process, searching for handler
org.jbpm.graph.def.DelegationException
at org.jbpm.graph.def.GraphElement.raiseException(GraphElement.java:352)
at org.jbpm.graph.def.GraphElement.raiseException(GraphElement.java:346)
at org.jbpm.graph.def.GraphElement.raiseException(GraphElement.java:346)
at org.jbpm.graph.def.GraphElement$$FastClassByCGLIB$$7a7d6aa6.invoke(<generated>)
at net.sf.cglib.proxy.MethodProxy.invoke(MethodProxy.java:149)
at org.hibernate.proxy.pojo.cglib.CGLIBLazyInitializer.intercept(CGLIBLazyInitializer.java:163)
at org.jbpm.bpel.def.CompositeActivity$$EnhancerByCGLIB$$e8ed498a.raiseException(<generated>)
at org.jbpm.graph.def.GraphElement.raiseException(GraphElement.java:346)
at org.jbpm.bpel.def.Activity.enter(Activity.java:106)
at org.jbpm.graph.def.Transition.take(Transition.java:119)
at org.jbpm.graph.def.Node.leave(Node.java:383)
at org.jbpm.bpel.def.Activity.leave(Activity.java:171)
at org.jbpm.bpel.def.ProcessInstanceStarter.visit(ProcessInstanceStarter.java:57)
at org.jbpm.bpel.def.Receive.accept(Receive.java:82)
at org.jbpm.bpel.def.Receive$$FastClassByCGLIB$$516412f0.invoke(<generated>)
at net.sf.cglib.proxy.MethodProxy.invoke(MethodProxy.java:149)
at org.hibernate.proxy.pojo.cglib.CGLIBLazyInitializer.intercept(CGLIBLazyInitializer.java:163)
at org.jbpm.bpel.def.Receive$$EnhancerByCGLIB$$6140a381.accept(<generated>)
at org.jbpm.bpel.def.ProcessInstanceStarter.visit(ProcessInstanceStarter.java:97)
at org.jbpm.bpel.def.Sequence.accept(Sequence.java:105)
at org.jbpm.bpel.def.Activity$$FastClassByCGLIB$$a89e54a2.invoke(<generated>)
at net.sf.cglib.proxy.MethodProxy.invoke(MethodProxy.java:149)
at org.hibernate.proxy.pojo.cglib.CGLIBLazyInitializer.intercept(CGLIBLazyInitializer.java:163)
at org.jbpm.bpel.def.Activity$$EnhancerByCGLIB$$4c05c877.accept(<generated>)
at org.jbpm.bpel.def.ProcessInstanceStarter.visit(ProcessInstanceStarter.java:43)
at org.jbpm.bpel.def.BpelDefinition.messageReceived(BpelDefinition.java:109)
at org.jbpm.bpel.integration.jms.StartListener.onMessage(StartListener.java:115)
at org.jboss.mq.SpyMessageConsumer.run(SpyMessageConsumer.java:694)
at java.lang.Thread.run(Thread.java:595)
Caused by: org.jbpm.graph.def.DelegationException
at org.jbpm.graph.def.GraphElement.raiseException(GraphElement.java:352)
at org.jbpm.graph.def.GraphElement.raiseException(GraphElement.java:346)
at org.jbpm.graph.def.GraphElement.raiseException(GraphElement.java:346)
at org.jbpm.graph.def.GraphElement$$FastClassByCGLIB$$7a7d6aa6.invoke(<generated>)
at net.sf.cglib.proxy.MethodProxy.invoke(MethodProxy.java:149)
at org.hibernate.proxy.pojo.cglib.CGLIBLazyInitializer.intercept(CGLIBLazyInitializer.java:163)
at org.jbpm.bpel.def.CompositeActivity$$EnhancerByCGLIB$$e8ed498a.raiseException(<generated>)
at org.jbpm.graph.def.GraphElement.raiseException(GraphElement.java:346)
at org.jbpm.bpel.def.Activity.enter(Activity.java:106)
at org.jbpm.graph.def.Transition.take(Transition.java:119)
at org.jbpm.graph.def.Node.leave(Node.java:383)
at org.jbpm.bpel.def.Activity.leave(Activity.java:171)
at org.jbpm.bpel.def.Assign.execute(Assign.java:55)
at org.jbpm.bpel.def.Activity.enter(Activity.java:101)
... 20 more
Caused by: java.lang.NullPointerException
at org.jbpm.bpel.integration.exe.SoapEndpointReference.selectPort(SoapEndpointReference.java:94)
at org.jbpm.bpel.integration.jms.IntegrationControl.getPartnerClient(IntegrationControl.java:234)
at org.jbpm.bpel.integration.jms.JmsIntegrationService.invoke(JmsIntegrationService.java:171)
at org.jbpm.bpel.def.Invoke.execute(Invoke.java:44)
at org.jbpm.bpel.def.Activity.enter(Activity.java:101)
... 25 more
2007-02-20 09:00:58,671 ERROR [org.jbpm.bpel.integration.jms.StartListener] could not start process instance
org.jbpm.graph.def.DelegationException
at org.jbpm.graph.def.GraphElement.raiseException(GraphElement.java:352)
at org.jbpm.graph.def.GraphElement.raiseException(GraphElement.java:346)
at org.jbpm.bpel.integration.jms.StartListener.onMessage(StartListener.java:120)
at org.jboss.mq.SpyMessageConsumer.run(SpyMessageConsumer.java:694)
at java.lang.Thread.run(Thread.java:595)
Caused by: org.jbpm.graph.def.DelegationException
at org.jbpm.graph.def.GraphElement.raiseException(GraphElement.java:352)
at org.jbpm.graph.def.GraphElement.raiseException(GraphElement.java:346)
at org.jbpm.graph.def.GraphElement.raiseException(GraphElement.java:346)
at org.jbpm.graph.def.GraphElement$$FastClassByCGLIB$$7a7d6aa6.invoke(<generated>)
at net.sf.cglib.proxy.MethodProxy.invoke(MethodProxy.java:149)
at org.hibernate.proxy.pojo.cglib.CGLIBLazyInitializer.intercept(CGLIBLazyInitializer.java:163)
at org.jbpm.bpel.def.CompositeActivity$$EnhancerByCGLIB$$e8ed498a.raiseException(<generated>)
at org.jbpm.graph.def.GraphElement.raiseException(GraphElement.java:346)
at org.jbpm.bpel.def.Activity.enter(Activity.java:106)
at org.jbpm.graph.def.Transition.take(Transition.java:119)
at org.jbpm.graph.def.Node.leave(Node.java:383)
at org.jbpm.bpel.def.Activity.leave(Activity.java:171)
at org.jbpm.bpel.def.ProcessInstanceStarter.visit(ProcessInstanceStarter.java:57)
at org.jbpm.bpel.def.Receive.accept(Receive.java:82)
at org.jbpm.bpel.def.Receive$$FastClassByCGLIB$$516412f0.invoke(<generated>)
at net.sf.cglib.proxy.MethodProxy.invoke(MethodProxy.java:149)
at org.hibernate.proxy.pojo.cglib.CGLIBLazyInitializer.intercept(CGLIBLazyInitializer.java:163)
at org.jbpm.bpel.def.Receive$$EnhancerByCGLIB$$6140a381.accept(<generated>)
at org.jbpm.bpel.def.ProcessInstanceStarter.visit(ProcessInstanceStarter.java:97)
at org.jbpm.bpel.def.Sequence.accept(Sequence.java:105)
at org.jbpm.bpel.def.Activity$$FastClassByCGLIB$$a89e54a2.invoke(<generated>)
at net.sf.cglib.proxy.MethodProxy.invoke(MethodProxy.java:149)
at org.hibernate.proxy.pojo.cglib.CGLIBLazyInitializer.intercept(CGLIBLazyInitializer.java:163)
at org.jbpm.bpel.def.Activity$$EnhancerByCGLIB$$4c05c877.accept(<generated>)
at org.jbpm.bpel.def.ProcessInstanceStarter.visit(ProcessInstanceStarter.java:43)
at org.jbpm.bpel.def.BpelDefinition.messageReceived(BpelDefinition.java:109)
at org.jbpm.bpel.integration.jms.StartListener.onMessage(StartListener.java:115)
... 2 more
Caused by: org.jbpm.graph.def.DelegationException
at org.jbpm.graph.def.GraphElement.raiseException(GraphElement.java:352)
at org.jbpm.graph.def.GraphElement.raiseException(GraphElement.java:346)
at org.jbpm.graph.def.GraphElement.raiseException(GraphElement.java:346)
at org.jbpm.graph.def.GraphElement$$FastClassByCGLIB$$7a7d6aa6.invoke(<generated>)
at net.sf.cglib.proxy.MethodProxy.invoke(MethodProxy.java:149)
at org.hibernate.proxy.pojo.cglib.CGLIBLazyInitializer.intercept(CGLIBLazyInitializer.java:163)
at org.jbpm.bpel.def.CompositeActivity$$EnhancerByCGLIB$$e8ed498a.raiseException(<generated>)
at org.jbpm.graph.def.GraphElement.raiseException(GraphElement.java:346)
at org.jbpm.bpel.def.Activity.enter(Activity.java:106)
at org.jbpm.graph.def.Transition.take(Transition.java:119)
at org.jbpm.graph.def.Node.leave(Node.java:383)
at org.jbpm.bpel.def.Activity.leave(Activity.java:171)
at org.jbpm.bpel.def.Assign.execute(Assign.java:55)
at org.jbpm.bpel.def.Activity.enter(Activity.java:101)
... 20 more
Caused by: java.lang.NullPointerException
at org.jbpm.bpel.integration.exe.SoapEndpointReference.selectPort(SoapEndpointReference.java:94)
at org.jbpm.bpel.integration.jms.IntegrationControl.getPartnerClient(IntegrationControl.java:234)
at org.jbpm.bpel.integration.jms.JmsIntegrationService.invoke(JmsIntegrationService.java:171)
at org.jbpm.bpel.def.Invoke.execute(Invoke.java:44)
at org.jbpm.bpel.def.Activity.enter(Activity.java:101)
... 25 more

Somebody know why??

[aguizar]

Apparently you did not define a < serviceCatalogs > element in your bpel-application.xml. In order to invoke an external service you need to point to its WSDL document from the service catalog. See the user guide for examples.

[agusgr]

Thanks Alejandro.
Now I have another problem. When the process invoke the external web service, it sends a SOAP message like this:

<env:Envelope xmlns:env='http://schemas.xmlsoap.org/soap/envelope/'>
<env:Header/>
<env:Body>
<defaultNS:CapitalCity xmlns:soap='http://schemas.xmlsoap.org/soap/envelope/' xmlns:xsd='http://www.w3.org/2001/XMLSchema' xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance'>ES</defaultNS:CapitalCity>
</env:Body>
</env:Envelope>

I don't now why the process adds the prefix "defaultNS". The external web service replies whit this:

<soap:Envelope xmlns:soap='http://schemas.xmlsoap.org/soap/envelope/'>
<soap:Header/>
<soap:Body>
<env:Fault xmlns:env='http://schemas.xmlsoap.org/soap/envelope/'>
<faultcode>soap:Server</faultcode>
<faultstring>Request parse error: The prefix 'defaultNS' has not been mapped to any URI</faultstring>
<detail/>
</env:Fault>
</soap:Body>
</soap:Envelope>

What can I do?