Anyone to help please?
I don't succed to debug this.
This is the code of knowledgeSession producer :
log.debug("produce the KnowledgeSession ...");
KnowledgeBuilder kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder();
List<Resource> resources = getProcessDefinitionList();
for (Resource resource : resources) {
kbuilder.add(resource, ResourceType.BPMN2);
}
if ( kbuilder.hasErrors() ) {
log.error( kbuilder.getErrors().toString() );
}
KnowledgeBase kbase = kbuilder.newKnowledgeBase();
Environment env = KnowledgeBaseFactory.newEnvironment();
env.set( EnvironmentName.ENTITY_MANAGER_FACTORY, emf );
if(kbase != null){
System.out.println("knowledge base NOT null");
for(org.drools.definition.process.Process p :kbase.getProcesses()){
System.out.println(" - process "+p.getName()+" ["+p.getId()+"]");
}
}
StatefulKnowledgeSession ksession = JPAKnowledgeService.newStatefulKnowledgeSession(kbase, null, env);
System.out.println(" !!!! DEBUG SESSION PERSISTENCE : new session with id : "+ksession.getId()+" !!!!");
And the associated log :
knowledge base NOT null
- process newcpbeforem29commontrunk [com.st.ams.flows.newcpbeforem29commontrunk]
- process newcpbeforem29 [com.st.ams.flows.newcpbeforem29]
- process newfinishedgood [com.st.ams.flows.newfinishedgood]
- process DataCorrections [com.st.ams.flows.datacorrections]
- process newproductline [com.st.ams.flows.newproductline]
Hibernate:
insert
into
SessionInfo
(lastModificationDate, rulesByteArray, startDate, OPTLOCK)
values
(?, ?, ?, ?)
!!!! DEBUG SESSION PERSISTENCE : new session with id : 32 !!!!
After that I try to retrieve all tasks and display task information. This use the method below :
public Object getProcessVariable(Long processInstanceId, Long taskId, String key){
Object retObj = null;
WorkflowProcessInstance wpi = (WorkflowProcessInstance)kSession.getProcessInstance(processInstanceId);
if((wpi == null) || (wpi.getVariable(key) == null)){
System.out.println("workflow process instance is null :-(");
}else{
System.out.println("workflow process instance is NOT null :-)");
retObj = wpi.getVariable(key);
//node info
System.out.println("is knowledge runtime null? "+(kSession.getSessionClock() == null));
System.out.println("list of node instance : ");
for(NodeInstance iNode : wpi.getNodeInstances()){
Node node = iNode.getNode();
}
}
return retObj;
}
and the associated log :
workflow process instance is NOT null :-)
is knowledge runtime null? false
list of node instance :
but then I have the same error as for my first post in the ProcessInstanceImpl class
Caused by: java.lang.NullPointerException
at org.jbpm.process.instance.impl.ProcessInstanceImpl.getProcess(ProcessInstanceImpl.java:68) [jbpm-flow-5.4.0.Final.jar:5.4.0.Final]
at org.jbpm.workflow.instance.impl.WorkflowProcessInstanceImpl.getWorkflowProcess(WorkflowProcessInstanceImpl.java:181) [jbpm-flow-5.4.0.Final.jar:5.4.0.Final]
at org.jbpm.workflow.instance.impl.WorkflowProcessInstanceImpl.getNodeContainer(WorkflowProcessInstanceImpl.java:69) [jbpm-flow-5.4.0.Final.jar:5.4.0.Final]
at org.jbpm.workflow.instance.impl.NodeInstanceImpl.getNode(NodeInstanceImpl.java:103) [jbpm-flow-5.4.0.Final.jar:5.4.0.Final]
at com.st.ams.task.management.TaskManager.getProcessVariable(TaskManager.java:234) [classes:]
It may be the kruntime that is null but how it is null?