Invoking BPEL Process as a Web Service via AJAX / JavaScript

Question

So, I am able to invoke the BPEL process using the console with a nice XML SOAP fragment. If I take the same fragment and try to invoke the process using JavaScript, I get a NullPointerException:
<2007-04-03 08:31:24,433> <DEBUG> <default.collaxa.cube.ws> SOAPRequestProvider
java.lang.NullPointerException
     at com.collaxa.cube.ws.soap.oc4j.SOAPRequestProviderHelper.getSOAPAction(SOAPRequestProviderHelper.java:431)
     at com.collaxa.cube.ws.soap.oc4j.SOAPRequestProvider.processBPELMessage(SOAPRequestProvider.java:231)
     at com.collaxa.cube.ws.soap.oc4j.SOAPRequestProvider.processMessage(SOAPRequestProvider.java:129)
     at oracle.j2ee.ws.server.provider.ProviderProcessor.doEndpointProcessing(ProviderProcessor.java:869)
     at oracle.j2ee.ws.server.WebServiceProcessor.invokeEndpointImplementation(WebServiceProcessor.java:349)
     at oracle.j2ee.ws.server.provider.ProviderProcessor.doRequestProcessing(ProviderProcessor.java:460)
     at oracle.j2ee.ws.server.WebServiceProcessor.processRequest(WebServiceProcessor.java:114)
     at oracle.j2ee.ws.server.WebServiceProcessor.doService(WebServiceProcessor.java:96)
     at oracle.j2ee.ws.server.WebServiceServlet.doPost(WebServiceServlet.java:177)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:763)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:856)
     at com.evermind.server.http.ResourceFilterChain.doFilter(ResourceFilterChain.java:64)
     at oracle.security.jazn.oc4j.JAZNFilter$1.run(JAZNFilter.java:396)
     at java.security.AccessController.doPrivileged(Native Method)
     at javax.security.auth.Subject.doAsPrivileged(Subject.java:517)
     at oracle.security.jazn.oc4j.JAZNFilter.doFilter(JAZNFilter.java:410)
     at com.evermind.server.http.ServletRequestDispatcher.invoke(ServletRequestDispatcher.java:621)
     at com.evermind.server.http.ServletRequestDispatcher.forwardInternal(ServletRequestDispatcher.java:368)
     at com.evermind.server.http.HttpRequestHandler.doProcessRequest(HttpRequestHandler.java:866)
     at com.evermind.server.http.HttpRequestHandler.processRequest(HttpRequestHandler.java:448)
     at com.evermind.server.http.AJPRequestHandler.run(AJPRequestHandler.java:302)
     at com.evermind.server.http.AJPRequestHandler.run(AJPRequestHandler.java:190)
     at oracle.oc4j.network.ServerSocketReadHandler$SafeRunnable.run(ServerSocketReadHandler.java:260)
     at com.evermind.util.ReleasableResourcePooledExecutor$MyWorker.run(ReleasableResourcePooledExecutor.java:303)
     at java.lang.Thread.run(Thread.java:595)
Am I missing something here??? I have injected TCP-Mon into the mix and it is showing me the exact same message going to the web service.
The message information that is sent looks like:
POST /orabpel/default/C3eFormInitiation/1.0 HTTP/1.1
Accept: */*
Accept-Language: en-ca
Referer: file://G:\Brad\eformInitiation\eformInitiation.html
Content-Type: text/xml; charset=UTF-8
Accept-Encoding: gzip, deflate
User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; .NET CLR 1.1.4322; InfoPath.1; FDM)
Host: d0027200.idir.bcgov:8081
Content-Length: 1264
Connection: Keep-Alive
Cache-Control: no-cache
Cookie: oracle.uix=0^^GMT-8:00
<?xml version="1.0" encoding="UTF-8"?>
<soapenv:Envelope xmlns:q0="http://pssg.gov.bc.ca/c3/eForms" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
     <soapenv:Body>
          <q0:formInitiationProcessRequest>
               <q0:locationCd>VIRCC</q0:locationCd>
               <q0:initiatorUserId>bxworsfo</q0:initiatorUserId>
               <q0:parentDocId>0</q0:parentDocId>
               <q0:submittedForms>
                    <q0:submittedForm>
                         <q0:primaryForm>Y</q0:primaryForm>
                         <q0:assignmentDetails>
                              <q0:assigneeId>bxworsfo</q0:assigneeId>
                              <q0:assigneeTypeCd>U</q0:assigneeTypeCd>
                              <q0:docTypeCd>IACF</q0:docTypeCd>
                              <q0:docTypeVersion>1.0</q0:docTypeVersion>
                         </q0:assignmentDetails>
                         <q0:workflowDetails>
                              <q0:docId>n/a</q0:docId>
                              <q0:docFolderPrefixCd>n/a</q0:docFolderPrefixCd>
                              <q0:docFolderSeq>n/a</q0:docFolderSeq>
                              <q0:docSeq>n/a</q0:docSeq>
                              <q0:workflowTaskURL>n/a</q0:workflowTaskURL>
                              <q0:workflowDisplayFormIdentifier>n/a</q0:workflowDisplayFormIdentifier>
                         </q0:workflowDetails>
                    </q0:submittedForm>
               </q0:submittedForms>
          </q0:formInitiationProcessRequest>
     </soapenv:Body>
</soapenv:Envelope>
To invoke the web service, we are just using the JavaScript code that has been generated by BPEL Process Manager. The call looks like:
function invokeSync (url, xmlDoc) {
var req = null; if (window.XMLHttpRequest) {
req = new XMLHttpRequest();
} else if (window.ActiveXObject) {
req = new ActiveXObject("Microsoft.XMLHTTP");
if (req) {
req.open("POST", url, false);
req.setRequestHeader("Content-Type", "text/xml");
req.send(xmlDoc);
return req.responseXML;
I have been able to invoke other web services using exactly the same function. They all seem fine.
I am even able to use an AXIS type client to invoke the BPEL web service from Eclipse.
Advice??? This definitely appears to be some sort of bug?
Thanks,
BradW

Answer 1

check out 102.InvokingProcess/ws tutorial .. which uses axis .. or generate the client based on the wsdl that you can retrieve from the bpel console / click on the process/ and then wsdl tab ..
hth clemens