I found a fix for this. On org.jbpm.bpel.relation.jms.RelationContext, comment
out one line like following, and initialize portConsumer to null:
| public PortConsumer getPortConsumer(PartnerLinkInstance instance) {
| Long instanceId = new Long(instance.getId());
| PortConsumer portConsumer = null;
| synchronized (portConsumers) {
| //portConsumer = (PortConsumer) portConsumers.get(instanceId); --
commented out to fix the nullpointer exception.
| if (portConsumer == null) {
| EndpointReference partnerRef = instance.getPartnerReference();
| if (partnerRef == null) {
| partnerRef = createPartnerReference(instance.getDefinition());
| instance.setPartnerReference(partnerRef);
| log.debug("initialized partner reference: instance=" + instance +
| ", reference=" + partnerRef);
| }
| // select a port from the service catalog
| Port port = partnerRef.selectPort(getServiceCatalog());
| log.debug("selected partner port: instance=" + instance + ", port="
+ port.getName());
| // create a consumer for that port
| portConsumer = new PortConsumer(port);
| portConsumers.put(instanceId, portConsumer);
| }
| }
| return portConsumer;
| }
|
The problem was that somehow in my case instance.getId() always returns 0, so
the first cached portConsumer was always returned, even when a new one should
have been created.
The fix basicly bypasses the caching mechanism on portConsumers. And now
invoking one service after another works. This is probably the laziest fix.
I'll dig more into it and see why jbpm always returns instance with instance id
set to 0 in this case when I get a chance.
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