Assigning to one of many elements (maxOccurs="unbounded")
miket Nov 1, 2006 7:57 AMI've just started to investigating the JBoss jBPM/BPEL piece (so please excuse me if my use of the terminology is a little flaky) and I'm trying to adapt it to work with the following complex message type (SWMSubmission):
<types> <schema targetNamespace="urn:samples:swmessage" xmlns="http://www.w3.org/2001/XMLSchema"> <complexType name="SWMKeyValuePair"> <sequence> <element name="swmName" type="xsd:string" minOccurs="1" maxOccurs="1"/> <element name="swmValue" type="xsd:string" minOccurs="1" maxOccurs="1"/> </sequence> </complexType> <complexType name="SWMSubmission"> <sequence> <element name="swmEventName" type="xsd:string" minOccurs="1" maxOccurs="1"/> <element name="swmEventData" type="typ:SWMKeyValuePair" minOccurs="1" maxOccurs="unbounded"/> </sequence> </complexType> </schema> </types>
In my bpel process document I declare a variable:
<variable name="swmSubmission" messageType="swm:swmSubmission" />
and attempt to assign values to it:
<assign name="fillSWMessage"> <copy> <from variable="balanceChange" part="customerName" /> <to variable="swmSubmission" part="body" query="/body/swmEventName" /> </copy> <copy> <from variable="balanceChange" part="customerName"/> <to variable="swmSubmission" part="body" query="/body/swmEventData[1]/swmName" /> </copy> <copy> <from variable="balanceChange" part="customerName" /> <to variable="swmSubmission" part="body" query="/body/swmEventData[1]/swmValue" /> </copy> </assign>
When fully deployed and the service invoked I get an error. If I remove the parts of the 'assign' that access the (possible) multiple elements then everything works:
<assign name="fillSWMessage"> <copy> <from variable="balanceChange" part="customerName" /> <to variable="swmSubmission" part="body" query="/body/swmEventName" /> </copy> </assign>
so I'm assuming I've made some basic error in my use of this complex type somewhere. The error I get is shown below:
2006-11-01 10:47:00,462 DEBUG [org.jboss.ws.server.ServiceEndpoint] Outgoing SOAPMessage <env:Envelope xmlns:env='http://schemas.xmlsoap.org/soap/envelope/'> <env:Header/> <env:Body> <env:Fault> <faultcode>env:Server</faultcode> <faultstring>The service is not in an appropiate state for the requested operation</faultstring> </env:Fault> </env:Body> </env:Envelope> 2006-11-01 10:47:00,462 ERROR [org.jboss.ws.server.ServiceEndpoint] Cannot process metrics java.lang.ClassCastException: org.jboss.ws.soap.SOAPBodyElementDoc at org.jboss.ws.soap.SOAPBodyImpl.getFault(SOAPBodyImpl.java:121) at org.jboss.ws.server.ServiceEndpoint.handleRequest(ServiceEndpoint.java:262) at org.jboss.ws.server.ServiceEndpointServlet.doPost(ServiceEndpointServlet.java:120) at javax.servlet.http.HttpServlet.service(HttpServlet.java:717) at javax.servlet.http.HttpServlet.service(HttpServlet.java:810) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173) at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178) at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:175) at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:74) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148) at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:869) at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:664) at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527) at org.apache.tomcat.util.net.MasterSlaveWorkerThread.run(MasterSlaveWorkerThread.java:112) at java.lang.Thread.run(Thread.java:595)
but this seems to be the response to any kind of problem (in fact I get this error intermittently using the tutorial as boxed).
I wasn't sure whether indexing of swmEventData should start at 0 or 1 so I tried them both with no joy. Is there some sort of intialisation I should be doing? Any help would be appreciated.