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From "Luciano Resende" <luckbr1...@gmail.com>
Subject BPEL & SCA References
Date Thu, 17 Apr 2008 15:29:46 GMT
I'm working on finalizing the support to have references to SCA
components in a BPEL process. Currently, the reference get invoked,
but when ODE engine is trying to process the results, looks like it
does not find the contents of the reply message. Based on some code
available in ODE, I guess I'm doing the proper schedule/transaction
steps, but it would be good to have a second opinion here and maybe
some help to see what's going wrong.

Below you will see a stack trace of the problem. And to reproduce it,
please invoke the HelloWorldTestCase available in the Tuscany itests :
sca/bpel/helloworld-reference module. The BPEL support is available in
sca/modules/implementation-bpel.

DEBUG - GeronimoLog.debug(66) | Invoking a partner operation: getGreetings
>>> Invoking a partner operation: getGreetings
>>> <?xml version="1.0" encoding="UTF-8"?>
<message><parameters><getGreetings xmlns="http://greetings"><message
xmlns="http://helloworld">Luciano</message></getGreetings></parameters></message>
>>> <?xml version="1.0" encoding="UTF-8"?>
<message xmlns="http://helloworld">Luciano</message>
>>> Result : <?xml version="1.0" encoding="UTF-8"?>
<return>Hello Luciano</return>
::result message:: <?xml version="1.0" encoding="UTF-8"?>
<message><getGreetingsResponse><return>Hello
Luciano</return></getGreetingsResponse></message>
java.lang.IllegalArgumentException: null parent
	at org.apache.ode.utils.DOMUtils.findChildByName(DOMUtils.java:740)
	at org.apache.ode.utils.DOMUtils.findChildByName(DOMUtils.java:735)
	at org.apache.ode.bpel.engine.BpelRuntimeContextImpl.getPartData(BpelRuntimeContextImpl.java:1213)
	at org.apache.ode.bpel.engine.BpelRuntimeContextImpl.fetchVariableData(BpelRuntimeContextImpl.java:421)
	at org.apache.ode.bpel.runtime.ExprEvaluationContextImpl.readVariable(ExprEvaluationContextImpl.java:85)
	at org.apache.ode.bpel.elang.xpath20.runtime.JaxpVariableResolver.resolveVariable(JaxpVariableResolver.java:93)
	at net.sf.saxon.xpath.JAXPVariable.evaluateVariable(JAXPVariable.java:117)
	at net.sf.saxon.expr.VariableReference.evaluateVariable(VariableReference.java:244)
	at net.sf.saxon.expr.VariableReference.iterate(VariableReference.java:217)
	at net.sf.saxon.xpath.XPathExpressionImpl.evaluate(XPathExpressionImpl.java:256)
	at org.apache.ode.bpel.elang.xpath20.runtime.XPath20ExpressionRuntime.evaluate(XPath20ExpressionRuntime.java:179)
	at org.apache.ode.bpel.elang.xpath20.runtime.XPath20ExpressionRuntime.evaluate(XPath20ExpressionRuntime.java:97)
	at org.apache.ode.bpel.runtime.ExpressionLanguageRuntimeRegistry.evaluate(ExpressionLanguageRuntimeRegistry.java:80)
	at org.apache.ode.bpel.runtime.ASSIGN.evalRValue(ASSIGN.java:193)
	at org.apache.ode.bpel.runtime.ASSIGN.copy(ASSIGN.java:356)
	at org.apache.ode.bpel.runtime.ASSIGN.run(ASSIGN.java:79)
	at sun.reflect.GeneratedMethodAccessor20.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:585)
	at org.apache.ode.jacob.vpu.JacobVPU$JacobThreadImpl.run(JacobVPU.java:451)
	at org.apache.ode.jacob.vpu.JacobVPU.execute(JacobVPU.java:139)
	at org.apache.ode.bpel.engine.BpelRuntimeContextImpl.execute(BpelRuntimeContextImpl.java:836)
	at org.apache.ode.bpel.engine.BpelProcess.handleWorkEvent(BpelProcess.java:336)
	at org.apache.ode.bpel.engine.BpelEngineImpl.onScheduledJob(BpelEngineImpl.java:318)
	at org.apache.ode.bpel.engine.BpelServerImpl.onScheduledJob(BpelServerImpl.java:364)
	at org.apache.ode.scheduler.simple.SimpleScheduler$4$1.call(SimpleScheduler.java:335)
	at org.apache.ode.scheduler.simple.SimpleScheduler$4$1.call(SimpleScheduler.java:334)
	at org.apache.ode.scheduler.simple.SimpleScheduler.execTransaction(SimpleScheduler.java:173)
	at org.apache.ode.scheduler.simple.SimpleScheduler$4.call(SimpleScheduler.java:333)
	at org.apache.ode.scheduler.simple.SimpleScheduler$4.call(SimpleScheduler.java:330)
	at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:269)
	at java.util.concurrent.FutureTask.run(FutureTask.java:123)
	at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:650)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:675)
	at java.lang.Thread.run(Thread.java:595)
DEBUG - GeronimoLog.debug(66) | Processing an async reply from service
{http://helloworld}HelloWorldService
Status: FAULT

-- 
Luciano Resende
Apache Tuscany Committer
http://people.apache.org/~lresende
http://lresende.blogspot.com/

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