Dynamically Setting PartnerLink Endpoint Address (HTTP) - Null Pointer

Question

I am trying to dynamically set a partner link address in my synchronous bpel process. I am getting a NullPointerException when assigning variable of type EndpointReference to the partner link.
I followed the example on the BPEL forum here (which describes dynamically setting the address):
Re: How can I change my ip adresses from a expression?
In this case, we only need to reset the address.
My partner link wsdl file contains this service defn:
<service name="Service1">
<port name="HTTPPost" binding="tns:HTTPPost">
<http:address location="http://test"/>
</port>
My assign syntax is as follows:
<copy>
<from variable="endPointRef" query="/wsa:EndpointReference/wsa:Address"/>
<to partnerLink="PartnerLink_1"/>
</copy>
I printed out my endPointRef variable here after assigning the values:
06/02/22 19:13:03 endPointRef: <EndpointReference xmlns="http://schemas.xmlsoap
.org/ws/2003/03/addressing"><Address>http://otn.oracle.com/Test.integration.servlet.WMServlet</Address><ReferenceProperties/><PortType/>
<ServiceName>ns2:Service1</ServiceName></EndpointReference>
Here is the error:
06/02/22 19:13:03 java.lang.NullPointerException
06/02/22 19:13:03 at com.collaxa.cube.engine.types.bpel.CXPartnerLink.copy
(CXPartnerLink.java:247)
I tried to explicitly set the PortType as well, but I got the same error.
thanks,nhi

Answer 1

Try with a 'Dynamic publish to service' action with:
<ctx:route isProxy="false">
<ctx:service>{ $yourBusinessService }</ctx:service>
</ctx:route>
where $yourBusinessService is the variable hosting the uri of your business service.
Regards
ferp