BPEL process doesn't respond

[kantti_]

Hello.

I'm farely new to BPEL and WS but I have managed to get the BPEL tutorials up and running.

I'm using:
JBoss AS 4.0.5.GA
JBossWS 1.2.1.GA
jbpm-bpel 1.1.Beta5

I have done the HelloWorld process with BPEL Designer 0.2.0.

The files I've made are (otherwise the code is from the original tutorial):

HELLO.BPEL:

<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<bpws:process xmlns:bpws="http://schemas.xmlsoap.org/ws/2004/03/business-process/" xmlns:tns="http://jbpm.org/examples/hello" exitOnStandardFault="yes" name="HelloWorld" suppressJoinFailure="yes" targetNamespace="http://jbpm.org/examples/hello">
 <bpws:import importType="http://schemas.xmlsoap.org/wsdl/" location="hello.wsdl" namespace="http://jbpm.org/examples/hello"/>
 <bpws:partnerLinks>
 <bpws:partnerLink myRole="Greeter" name="caller" partnerLinkType="tns:Caller-Greeter"/>
 </bpws:partnerLinks>
 <bpws:variables>
 <bpws:variable messageType="tns:nameMessage" name="request"/>
 <bpws:variable messageType="tns:greetingMessage" name="response"/>
 </bpws:variables>
 <bpws:sequence>
 <bpws:receive name="Receive" operation="sayHello" partnerLink="caller" portType="tns:Greeter" variable="request"/>
 <bpws:assign name="Assign" validate="no">
 <bpws:copy>
 <bpws:from><![CDATA[concat('Hello, ', bpws:getVariableData('request', 'name'), '!')]]></bpws:from>
 <bpws:to part="greeting" variable="response"/>
 </bpws:copy>
 </bpws:assign>
 <bpws:reply name="Reply" operation="sayHello" partnerLink="caller" portType="tns:Greeter" variable="response"/>
 </bpws:sequence>
</bpws:process>

HELLO.WSDL:

<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<wsdl:definitions xmlns:tns="http://jbpm.org/examples/hello" xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/" xmlns:xsd="http://www.w3.org/2001/XMLSchema" name="hello" targetNamespace="http://jbpm.org/examples/hello" xmlns:p="http://schemas.xmlsoap.org/ws/2004/03/partner-link/">
 <wsdl:message name="nameMessage">
 <wsdl:part name="name" type="xsd:string"></wsdl:part>
 </wsdl:message>
 <wsdl:message name="greetingMessage">
 <wsdl:part name="greeting" type="xsd:string"></wsdl:part>
 </wsdl:message>
 <wsdl:portType name="Greeter">
 <wsdl:operation name="sayHello">
 <wsdl:input message="tns:nameMessage"></wsdl:input>
 <wsdl:output message="tns:greetingMessage"></wsdl:output>
 </wsdl:operation>
 </wsdl:portType>
 <p:partnerLinkType name="Caller-Greeter">
 <p:role portType="tns:Greeter" name="Greeter"></p:role>
 </p:partnerLinkType>
</wsdl:definitions>

Could the problem be in the code above? The war-file deploys nicely but the junit test just freezes. The ws is called but it doesn't send a response.

Thanks for the help.

[kantti_]

Hello again.

I noticed that I had forgotten to add the createInstance attribute to the receive.

The server sayes the following when I execute the redeploy command:

12:07:47,143 INFO [[/jbpm-bpel]] processDeployServlet: deploying process definition: file=file:/C:/jboss/jbpm-bpel-1.1.Beta3/examples/Omahello/target/hello-process.zip
12:07:47,611 INFO [BpelReader] read wsdl document: hello.wsdl
12:07:47,627 INFO [BpelReader] read wsdl document: hello.wsdl
12:07:47,658 INFO [BpelReader] read bpel document: hello.bpel
12:07:47,815 INFO [[/jbpm-bpel]] processDeployServlet: deployed process definition: HelloWorld
12:08:00,674 INFO [TomcatDeployer] deploy, ctxPath=/hello, warUrl=.../tmp/deploy/tmp38050hello-exp.war/
12:08:00,940 WARN [ProxyWarnLog] Narrowing proxy to class org.jbpm.bpel.graph.def.CompositeActivity - this operation breaks ==
12:08:01,018 WARN [ProxyWarnLog] Narrowing proxy to class org.jbpm.bpel.integration.def.ReceiveAction - this operation breaks ==
12:08:01,174 INFO [IntegrationConfigurator] Message reception enabled for process: HelloWorld
12:08:01,330 INFO [WSDLFilePublisher] WSDL published to: file:/C:/jboss/jboss-4.0.5.GA/server/default/data/wsdl/hello.war/hello-service.wsdl
12:08:01,409 WARN [ProxyWarnLog] Narrowing proxy to class org.jbpm.bpel.graph.def.CompositeActivity - this operation breaks ==
12:08:01,440 ERROR [StartListener] could not start process instance
org.jbpm.bpel.BpelException: could not select nodes
 at org.jbpm.bpel.sublang.xpath.XPathExpressionEvaluator.evaluate(XPathExpressionEvaluator.java:86)
 at org.jbpm.bpel.graph.basic.assign.FromExpression.extract(FromExpression.java:36)
 at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
 at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
 at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
 at java.lang.reflect.Method.invoke(Method.java:585)
 at org.hibernate.proxy.pojo.javassist.JavassistLazyInitializer.invoke(JavassistLazyInitializer.java:205)
 at org.jbpm.bpel.graph.basic.Assign$From_$$_javassist_112.extract(Assign$From_$$_javassist_112.java)
 at org.jbpm.bpel.graph.basic.Assign$Copy.copyValue(Assign.java:95)
 at org.jbpm.bpel.graph.basic.Assign.execute(Assign.java:54)
 at org.jbpm.bpel.graph.def.Activity.enter(Activity.java:105)
 at org.jbpm.graph.def.Transition.take(Transition.java:151)
 at org.jbpm.graph.def.Node.leave(Node.java:393)
 at org.jbpm.bpel.graph.def.Activity.leave(Activity.java:205)
 at org.jbpm.bpel.graph.def.ProcessInstanceStarter.visit(ProcessInstanceStarter.java:52)
 at org.jbpm.bpel.graph.basic.Receive.accept(Receive.java:96)
 at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
 at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
 at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
 at java.lang.reflect.Method.invoke(Method.java:585)
 at org.hibernate.proxy.pojo.javassist.JavassistLazyInitializer.invoke(JavassistLazyInitializer.java:205)
 at org.jbpm.bpel.graph.basic.Receive_$$_javassist_16.accept(Receive_$$_javassist_16.java)
 at org.jbpm.bpel.graph.def.ProcessInstanceStarter.visit(ProcessInstanceStarter.java:61)
 at org.jbpm.bpel.graph.struct.Sequence.accept(Sequence.java:103)
 at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
 at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
 at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
 at java.lang.reflect.Method.invoke(Method.java:585)
 at org.hibernate.proxy.pojo.javassist.JavassistLazyInitializer.invoke(JavassistLazyInitializer.java:205)
 at org.jbpm.bpel.graph.def.Activity_$$_javassist_159.accept(Activity_$$_javassist_159.java)
 at org.jbpm.bpel.graph.def.ProcessInstanceStarter.visit(ProcessInstanceStarter.java:46)
 at org.jbpm.bpel.graph.def.BpelProcessDefinition.messageReceived(BpelProcessDefinition.java:149)
 at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
 at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
 at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
 at java.lang.reflect.Method.invoke(Method.java:585)
 at org.hibernate.proxy.pojo.javassist.JavassistLazyInitializer.invoke(JavassistLazyInitializer.java:205)
 at org.jbpm.bpel.graph.def.BpelProcessDefinition_$$_javassist_84.messageReceived(BpelProcessDefinition_$$_javassist_84.java)
 at org.jbpm.bpel.integration.jms.StartListener.onMessage(StartListener.java:118)
 at org.jboss.mq.SpyMessageConsumer.run(SpyMessageConsumer.java:696)
 at java.lang.Thread.run(Thread.java:595)
Caused by: org.jaxen.UnresolvableException: No Such Function {http://schemas.xmlsoap.org/ws/2004/03/business-process/}:getVariableData
 at org.jaxen.SimpleFunctionContext.getFunction(SimpleFunctionContext.java:127)
 at org.jaxen.ContextSupport.getFunction(ContextSupport.java:239)
 at org.jaxen.Context.getFunction(Context.java:193)
 at org.jaxen.expr.DefaultFunctionCallExpr.evaluate(DefaultFunctionCallExpr.java:168)
 at org.jaxen.expr.DefaultFunctionCallExpr.evaluateParams(DefaultFunctionCallExpr.java:187)
 at org.jaxen.expr.DefaultFunctionCallExpr.evaluate(DefaultFunctionCallExpr.java:171)
 at org.jaxen.expr.DefaultXPathExpr.asList(DefaultXPathExpr.java:98)
 at org.jaxen.BaseXPath.selectNodesForContext(BaseXPath.java:674)
 at org.jaxen.BaseXPath.selectNodes(BaseXPath.java:213)
 at org.jbpm.bpel.sublang.xpath.XPathExpressionEvaluator.evaluate(XPathExpressionEvaluator.java:72)
 ... 40 more

[meghanai_99]

Hi,

The namespace I use for BPEL in my processes is

xmlns="http://schemas.xmlsoap.org/ws/2003/03/business-process/"

Also why do you have your expression in CDATA? Shouldn't that be in 'from's expression' attribute?

<assign>
 <copy>
 <from expression="concat('Hello, ',
 bpel:getVariableData('request', 'name'), '!')" />
 <to variable="response" part="greeting" />
 </copy>
 </assign>

~ Meghana.

[kantti_]

Hi.

The reason for the namespace is that the Visual Designer uses it. It won't show the graphical presentation of the prosess unless that namespace is used.

Also the expression is automaticly generated. I have tried it without it but it still doesn't work.

[kantti_]

Sorry for the trouble. This helped to my problem:

"jBPM BPEL 1.1.Beta3 implements the following sections of the BPEL4WS 1.1 specification dated May 5, 2003."