Can't receive headers from JMS Adapter - "Variable is not initialized"???

Question

I'm using JDeveloper Studio 10.1.3.4.0.4270 to try to build a BPEL process that is initiated by a JMS Adapter. I want this process to access the headers of the incoming message. Despite what Adapter Technical Note #005 says, JDeveloper says I can't do it! Despite the fact that the Receive activity is set up to store the header to a variable, JDeveloper says the variable is not initialized when I try to access it. (At least this is consistent with BPEL Process Manager's behavior -- the runtime also says it's not initialized.) In the following simple code, it looks initialized to me. What am I missing? Thanks.
<?xml version = "1.0" encoding = "UTF-8" ?>
<!--
  Oracle JDeveloper BPEL Designer
  Created: Mon Jun 22 18:10:17 CDT 2009
  Author:  memeyer
  Purpose: Empty BPEL Process
-->
<process name="BPELHello3" targetNamespace="http://xmlns.oracle.com/BPELHello3"
         xmlns="http://schemas.xmlsoap.org/ws/2003/03/business-process/"
         xmlns:bpws="http://schemas.xmlsoap.org/ws/2003/03/business-process/"
         xmlns:xp20="http://www.oracle.com/XSL/Transform/java/oracle.tip.pc.services.functions.Xpath20"
         xmlns:ns1="http://xmlns.oracle.com/pcbpel/adapter/jms/ToHello3/"
         xmlns:ldap="http://schemas.oracle.com/xpath/extension/ldap"
         xmlns:xsd="http://www.w3.org/2001/XMLSchema"
         xmlns:ns2="http://xmlns.oracle.com/pcbpel/adapter/jms/"
         xmlns:bpelx="http://schemas.oracle.com/bpel/extension"
         xmlns:client="http://xmlns.oracle.com/BPELHello3"
         xmlns:ora="http://schemas.oracle.com/xpath/extension"
         xmlns:orcl="http://www.oracle.com/XSL/Transform/java/oracle.tip.pc.services.functions.ExtFunc">
  <!--
      PARTNERLINKS                                                     
      List of services participating in this BPEL process              
  -->
  <partnerLinks>
    <partnerLink myRole="Consume_Message_role" name="ToHello3"
                 partnerLinkType="ns1:Consume_Message_plt"/>
  </partnerLinks>
  <!--
      VARIABLES                                                       
      List of messages and XML documents used within this BPEL process
  -->
  <variables>
    <variable name="inputVariable"
              messageType="ns1:BPELHello2ProcessResponse_msg"/>
    <variable name="header" messageType="ns2:InboundHeader_msg"/>
  </variables>
  <!--
     ORCHESTRATION LOGIC                                              
     Set of activities coordinating the flow of messages across the   
     services integrated within this business process                 
  -->
  <sequence name="main">
    <receive name="Receive_1" partnerLink="ToHello3"
             portType="ns1:Consume_Message_ptt" operation="Consume_Message"
             variable="inputVariable" createInstance="yes"
             bpelx:headerVariable="header"/>
    <assign name="Assign_1">
      <copy>
        <from variable="header" part="inboundHeader"
              query="/ns2:JMSInboundHeadersAndProperties/ns2:JMSInboundProperties"/>
        <to variable="header" part="inboundHeader"
            query="/ns2:JMSInboundHeadersAndProperties/ns2:JMSInboundProperties"/>
      </copy>
    </assign>
    <bpelx:exec name="Java_Embedding_1" language="java" version="1.3">
      <![CDATA[/*Write your java code below e.g. 
     System.out.println("Hello, World");
System.out.println("Hello, Whatever");]]>
    </bpelx:exec>
  </sequence>
</process>

Answer 1

Hi,
Your code looks correct to me. However, you should name your durable subscriber: topicSession.createDurableSubscriber(topic, "myDurableSubscriber");
Then it should be possible to use your JMS provider administration API to check that your durable subscriber is registered with your topic. Once the durable subscriber is registered it will start receiving message.
To double check that your code is correct, you should test your code with another provide.
Hope this helps
Arnaud
www.arjuna.com