token.signal() throwing DelegationException

[klsateesh]

Hi,

I have a Simple ProcessDefinition . I have loaded the Process Definition into the DB and when i created a process Instance and called the token.signal() it is throwing this Exception..

ProcessInstance processInstance = new ProcessInstance(processDefinition);

 processInstance.getContextInstance().setVariable("UserId",((UserInfoBean)this.getSession().getValue("User")).getUserId());

 Token token = processInstance.getRootToken();
 System.out.println("Root Node Name :"+token.getNode().getName());

 token.signal();

And my Process Definition looks like..

<process-definition name="DispAgreement">

 <start-state name="Start">
 <transition name="start" to="Draft Disp Agreement"></transition>
 </start-state>

 <task-node name="Draft Disp Agreement">
 <task name="Create Draft">
 <assignment class="DraftAssignmentHandler"></assignment>
 </task>
 <transition to="Request Comments">
 </transition>
 </task-node>

 ....

</process-definition>

Root Node Name :Start
[/jBPMWeb] Unhandled exception caught in Global.app:
org.jbpm.graph.def.DelegationException
at org.jbpm.graph.def.GraphElement.raiseException(Ljava.lang.Throwable;L
org.jbpm.graph.exe.ExecutionContext;)V(GraphElement.java:299)
at org.jbpm.graph.def.GraphElement.raiseException(Ljava.lang.Throwable;L
org.jbpm.graph.exe.ExecutionContext;)V(GraphElement.java:293)
at org.jbpm.graph.def.GraphElement.raiseException(Ljava.lang.Throwable;L
org.jbpm.graph.exe.ExecutionContext;)V(GraphElement.java:293)
at org.jbpm.taskmgmt.exe.TaskMgmtInstance.invokeAssignmentHandler(Lorg.j
bpm.instantiation.Delegation;Lorg.jbpm.taskmgmt.exe.Assignable;Lorg.jbpm.graph.e
xe.ExecutionContext;)V(TaskMgmtInstance.java:149)
at org.jbpm.taskmgmt.exe.TaskInstance.assign(Lorg.jbpm.graph.exe.Executi
onContext;)V(TaskInstance.java:138)
at org.jbpm.taskmgmt.exe.TaskMgmtInstance.createTaskInstance(Lorg.jbpm.t
askmgmt.def.Task;Lorg.jbpm.graph.exe.ExecutionContext;)Lorg.jbpm.taskmgmt.exe.Ta
skInstance;(TaskMgmtInstance.java:102)
at org.jbpm.graph.node.TaskNode.execute(Lorg.jbpm.graph.exe.ExecutionCon
text;)V(TaskNode.java:136)
at org.jbpm.graph.def.Node.enter(Lorg.jbpm.graph.exe.ExecutionContext;)V
(Node.java:284)
at org.jbpm.graph.def.Transition.take(Lorg.jbpm.graph.exe.ExecutionConte
xt;)V(Transition.java:92)
at org.jbpm.graph.def.Node.leave(Lorg.jbpm.graph.exe.ExecutionContext;Lo
rg.jbpm.graph.def.Transition;)V(Node.java:349)
at org.jbpm.graph.node.StartState.leave(Lorg.jbpm.graph.exe.ExecutionCon
text;Lorg.jbpm.graph.def.Transition;)V(StartState.java:73)
at org.jbpm.graph.exe.Token.signal(Lorg.jbpm.graph.def.Transition;)V(Tok
en.java:127)
at org.jbpm.graph.exe.Token.signal()V(Token.java:92)
at Controller.createDispositionAgreement()Lcom.bea.wlw.netui.pageflow.Fo
rward;(Controller.jpf:276)
at jrockit.reflect.NativeMethodInvoker.invoke0(Ljava.lang.Object;ILjava.
lang.Object;[Ljava.lang.Object;)Ljava.lang.Object;(Unknown Source)
at jrockit.reflect.NativeMethodInvoker.invoke(Ljava.lang.Object;[Ljava.l
ang.Object;)Ljava.lang.Object;(Unknown Source)
at jrockit.reflect.VirtualNativeMethodInvoker.invoke(Ljava.lang.Object;[
Ljava.lang.Object;)Ljava.lang.Object;(Unknown Source)
at java.lang.reflect.Method.invoke(Ljava.lang.Object;[Ljava.lang.Object;
I)Ljava.lang.Object;(Unknown Source)
at com.bea.wlw.netui.pageflow.FlowController.invokeActionMethod(Ljava.la
ng.reflect.Method;Lorg.apache.struts.action.ActionForm;Ljavax.servlet.http.HttpS
ervletRequest;Lorg.apache.struts.action.ActionMapping;)Lorg.apache.struts.action
.ActionForward;(FlowController.java:1519)
at com.bea.wlw.netui.pageflow.FlowController.getActionMethodForward(Ljav
a.lang.String;Lorg.apache.struts.action.ActionForm;Ljavax.servlet.http.HttpServl
etRequest;Ljavax.servlet.http.HttpServletResponse;Lorg.apache.struts.action.Acti
onMapping;)Lorg.apache.struts.action.ActionForward;(FlowController.java:1445)
at com.bea.wlw.netui.pageflow.FlowController.internalExecute(Lorg.apache
.struts.action.ActionMapping;Lorg.apache.struts.action.ActionForm;Ljavax.servlet
.http.HttpServletRequest;Ljavax.servlet.http.HttpServletResponse;)Lorg.apache.st
ruts.action.ActionForward;(FlowController.java:776)
at com.bea.wlw.netui.pageflow.PageFlowController.internalExecute(Lorg.ap
ache.struts.action.ActionMapping;Lorg.apache.struts.action.ActionForm;Ljavax.ser
vlet.http.HttpServletRequest;Ljavax.servlet.http.HttpServletResponse;)Lorg.apach
e.struts.action.ActionForward;(PageFlowController.java:211)
at com.bea.wlw.netui.pageflow.FlowController.execute(Lorg.apache.struts.
action.ActionMapping;Lorg.apache.struts.action.ActionForm;Ljavax.servlet.http.Ht
tpServletRequest;Ljavax.servlet.http.HttpServletResponse;)Lorg.apache.struts.act
ion.ActionForward;(FlowController.java:606)
at org.apache.struts.action.RequestProcessor.processActionPerform(Ljavax
.servlet.http.HttpServletRequest;Ljavax.servlet.http.HttpServletResponse;Lorg.ap
ache.struts.action.Action;Lorg.apache.struts.action.ActionForm;Lorg.apache.strut
s.action.ActionMapping;)Lorg.apache.struts.action.ActionForward;(RequestProcesso
r.java:484)
at com.bea.wlw.netui.pageflow.PageFlowRequestProcessor.processActionPerf
orm(Ljavax.servlet.http.HttpServletRequest;Ljavax.servlet.http.HttpServletRespon
se;Lorg.apache.struts.action.Action;Lorg.apache.struts.action.ActionForm;Lorg.ap
ache.struts.action.ActionMapping;)Lorg.apache.struts.action.ActionForward;(PageF
lowRequestProcessor.java:1354)
at org.apache.struts.action.RequestProcessor.process(Ljavax.servlet.http
.HttpServletRequest;Ljavax.servlet.http.HttpServletResponse;)V(RequestProcessor.
java:274)
at com.bea.wlw.netui.pageflow.PageFlowRequestProcessor.process(Ljavax.se
rvlet.http.HttpServletRequest;Ljavax.servlet.http.HttpServletResponse;)V(PageFlo
wRequestProcessor.java:650)
at com.bea.wlw.netui.pageflow.AutoRegisterActionServlet.process(Ljavax.s
ervlet.http.HttpServletRequest;Ljavax.servlet.http.HttpServletResponse;)V(AutoRe
gisterActionServlet.java:527)
at com.bea.wlw.netui.pageflow.PageFlowActionServlet.process(Ljavax.servl
et.http.HttpServletRequest;Ljavax.servlet.http.HttpServletResponse;)V(PageFlowAc
tionServlet.java:152)
at org.apache.struts.action.ActionServlet.doGet(Ljavax.servlet.http.Http
ServletRequest;Ljavax.servlet.http.HttpServletResponse;)V(ActionServlet.java:507
)
at javax.servlet.http.HttpServlet.service(Ljavax.servlet.http.HttpServle
tRequest;Ljavax.servlet.http.HttpServletResponse;)V(HttpServlet.java:740)
at javax.servlet.http.HttpServlet.service(Ljavax.servlet.ServletRequest;
Ljavax.servlet.ServletResponse;)V(HttpServlet.java:853)
Caused by: java.lang.NullPointerException
at org.jbpm.taskmgmt.exe.TaskMgmtInstance.invokeAssignmentHandler(Lorg.j
bpm.instantiation.Delegation;Lorg.jbpm.taskmgmt.exe.Assignable;Lorg.jbpm.graph.e
xe.ExecutionContext;)V(TaskMgmtInstance.java:143)
at org.jbpm.taskmgmt.exe.TaskInstance.assign(Lorg.jbpm.graph.exe.Executi
onContext;)V(TaskInstance.java:138)
at org.jbpm.taskmgmt.exe.TaskMgmtInstance.createTaskInstance(Lorg.jbpm.t
askmgmt.def.Task;Lorg.jbpm.graph.exe.ExecutionContext;)Lorg.jbpm.taskmgmt.exe.Ta
skInstance;(TaskMgmtInstance.java:102)
at org.jbpm.graph.node.TaskNode.execute(Lorg.jbpm.graph.exe.ExecutionCon
text;)V(TaskNode.java:136)
at org.jbpm.graph.def.Node.enter(Lorg.jbpm.graph.exe.ExecutionContext;)V
(Node.java:284)
at org.jbpm.graph.def.Transition.take(Lorg.jbpm.graph.exe.ExecutionConte
xt;)V(Transition.java:92)
at org.jbpm.graph.def.Node.leave(Lorg.jbpm.graph.exe.ExecutionContext;Lo
rg.jbpm.graph.def.Transition;)V(Node.java:349)
at org.jbpm.graph.node.StartState.leave(Lorg.jbpm.graph.exe.ExecutionCon
text;Lorg.jbpm.graph.def.Transition;)V(StartState.java:73)
at org.jbpm.graph.exe.Token.signal(Lorg.jbpm.graph.def.Transition;)V(Tok
en.java:127)
at org.jbpm.graph.exe.Token.signal()V(Token.java:92)
at Controller.createDispositionAgreement()Lcom.bea.wlw.netui.pageflow.Fo
rward;(Controller.jpf:276)
at jrockit.reflect.NativeMethodInvoker.invoke0(Ljava.lang.Object;ILjava.
lang.Object;[Ljava.lang.Object;)Ljava.lang.Object;(Unknown Source)
at jrockit.reflect.NativeMethodInvoker.invoke(Ljava.lang.Object;[Ljava.l
ang.Object;)Ljava.lang.Object;(Unknown Source)
at jrockit.reflect.VirtualNativeMethodInvoker.invoke(Ljava.lang.Object;[
Ljava.lang.Object;)Ljava.lang.Object;(Unknown Source)
at java.lang.reflect.Method.invoke(Ljava.lang.Object;[Ljava.lang.Object;
I)Ljava.lang.Object;(Unknown Source)
at com.bea.wlw.netui.pageflow.FlowController.invokeActionMethod(Ljava.la
ng.reflect.Method;Lorg.apache.struts.action.ActionForm;Ljavax.servlet.http.HttpS
ervletRequest;Lorg.apache.struts.action.ActionMapping;)Lorg.apache.struts.action
.ActionForward;(FlowController.java:1519)
at com.bea.wlw.netui.pageflow.FlowController.getActionMethodForward(Ljav
a.lang.String;Lorg.apache.struts.action.ActionForm;Ljavax.servlet.http.HttpServl
etRequest;Ljavax.servlet.http.HttpServletResponse;Lorg.apache.struts.action.Acti
onMapping;)Lorg.apache.struts.action.ActionForward;(FlowController.java:1445)
at com.bea.wlw.netui.pageflow.FlowController.internalExecute(Lorg.apache
.struts.action.ActionMapping;Lorg.apache.struts.action.ActionForm;Ljavax.servlet
.http.HttpServletRequest;Ljavax.servlet.http.HttpServletResponse;)Lorg.apache.st
ruts.action.ActionForward;(FlowController.java:776)
at com.bea.wlw.netui.pageflow.PageFlowController.internalExecute(Lorg.ap
ache.struts.action.ActionMapping;Lorg.apache.struts.action.ActionForm;Ljavax.ser
vlet.http.HttpServletRequest;Ljavax.servlet.http.HttpServletResponse;)Lorg.apach
e.struts.action.ActionForward;(PageFlowController.java:211)
at com.bea.wlw.netui.pageflow.FlowController.execute(Lorg.apache.struts.
action.ActionMapping;Lorg.apache.struts.action.ActionForm;Ljavax.servlet.http.Ht
tpServletRequest;Ljavax.servlet.http.HttpServletResponse;)Lorg.apache.struts.act
ion.ActionForward;(FlowController.java:606)
at org.apache.struts.action.RequestProcessor.processActionPerform(Ljavax
.servlet.http.HttpServletRequest;Ljavax.servlet.http.HttpServletResponse;Lorg.ap
ache.struts.action.Action;Lorg.apache.struts.action.ActionForm;Lorg.apache.strut
s.action.ActionMapping;)Lorg.apache.struts.action.ActionForward;(RequestProcesso
r.java:484)
at com.bea.wlw.netui.pageflow.PageFlowRequestProcessor.processActionPerf
orm(Ljavax.servlet.http.HttpServletRequest;Ljavax.servlet.http.HttpServletRespon
se;Lorg.apache.struts.action.Action;Lorg.apache.struts.action.ActionForm;Lorg.ap
ache.struts.action.ActionMapping;)Lorg.apache.struts.action.ActionForward;(PageF
lowRequestProcessor.java:1354)
at org.apache.struts.action.RequestProcessor.process(Ljavax.servlet.http
.HttpServletRequest;Ljavax.servlet.http.HttpServletResponse;)V(RequestProcessor.
java:274)
at com.bea.wlw.netui.pageflow.PageFlowRequestProcessor.process(Ljavax.se
rvlet.http.HttpServletRequest;Ljavax.servlet.http.HttpServletResponse;)V(PageFlo
wRequestProcessor.java:650)
at com.bea.wlw.netui.pageflow.AutoRegisterActionServlet.process(Ljavax.s
ervlet.http.HttpServletRequest;Ljavax.servlet.http.HttpServletResponse;)V(AutoRe
gisterActionServlet.java:527)
at com.bea.wlw.netui.pageflow.PageFlowActionServlet.process(Ljavax.servl
et.http.HttpServletRequest;Ljavax.servlet.http.HttpServletResponse;)V(PageFlowAc
tionServlet.java:152)
at org.apache.struts.action.ActionServlet.doGet(Ljavax.servlet.http.Http
ServletRequest;Ljavax.servlet.http.HttpServletResponse;)V(ActionServlet.java:507
)
at javax.servlet.http.HttpServlet.service(Ljavax.servlet.http.HttpServle
tRequest;Ljavax.servlet.http.HttpServletResponse;)V(HttpServlet.java:740)
at javax.servlet.http.HttpServlet.service(Ljavax.servlet.ServletRequest;
Ljavax.servlet.ServletResponse;)V(HttpServlet.java:853)
at weblogic.servlet.internal.ServletStubImpl$ServletInvocationAction.run
()Ljava.lang.Object;(ServletStubImpl.java:1006)
at weblogic.servlet.internal.ServletStubImpl.invokeServlet(Ljavax.servle
t.ServletRequest;Ljavax.servlet.ServletResponse;Lweblogic.servlet.internal.Filte
rChainImpl;)V(ServletStubImpl.java:419)
at weblogic.servlet.internal.ServletStubImpl.invokeServlet(Ljavax.servle
t.ServletRequest;Ljavax.servlet.ServletResponse;)V(ServletStubImpl.java:315)

Thanks
Sateesh

[klsateesh]

Hi,

I used the same Process Definition and ran it without DB Persistence and it ran successfully. So it has some thing to do with the way i am persisting the Process Definition....

In my Code i am deloying the same ProcessDefinition (as i am running the same Page FLow again and again) and hence it is getting stored in the DB multiple times ..

And interestingly the following method

processDefinition = jbpmSession.getGraphSession().findLatestProcessDefinition(processDefName);

is not returning the most recently stored ProcessDefinition !!!

The Process Definition i loaded when i ran my application for the first time had the invalid Assignment Handler ClassName and hence the exception..

Now tried to delete the Old Process Definitions first using the following Command

SQL> delete from JBPM_PROCESSDEFINITION;
delete from JBPM_PROCESSDEFINITION
*
ERROR at line 1:
ORA-02292: integrity constraint (JBPM.FK_DELEGATION_PRCD) violated - child
record found

i am able to delete all the old process definitions ( not only process Definitions but also all the other details that are stored in other tables..) using the script

sql > @oralce.clean.sql;

Thanks
~Sateesh

[aguizar]

So it has some thing to do with the way i am persisting the Process Definition....

Probably, but you don't specify how you do it. If you use GraphSession::saveProcessDefinition(), jBPM won't increase the version number. You ought to use any of the ProcessArchiveDeployer.deployXXX() methods.

[klsateesh]

Hi,

I Used the following Code to Store the Process Definition..

new DeployProcessDefinitions().deployProcessDefinition(processDefinition);

Thanks
Sateesh

[klsateesh]

Hi,

Yes i was using the savePorcessDefinition() of GraphSession..

DeployProcessDefinitions() is the Custom Class i wrote ..

Thanks
Sateesh

"kls_kumar" wrote:
Hi,

I Used the following Code to Store the Process Definition..

new DeployProcessDefinitions().deployProcessDefinition(processDefinition);

Thanks
Sateesh

[ranasish_tech]

I am also facing the same error.

I have used the following code to to deploy the processdefinition.

jbpmSession.getGraphSession().saveProcessDefinition(processDefinition);


And using the following code to load the processdefinition.

ProcessDefinition processDefinition =
jbpmSession.getGraphSession().loadProcessDefinition(processDefId);

Following is the code where the error is coming from.

ProcessInstance processInstance = new ProcessInstance(processDefinition);
Token token = processInstance.getRootToken();
processInstance.getContextInstance().createVariable("executionDirection","reply");
token.signal();

First few lines of the error stack is:

[exec] 17:50:03,677 INFO [STDOUT] *****In getJbpmSessionFactory
[exec] 17:50:03,677 INFO [STDOUT] *****Returning from getJbpmSessionFactory
[exec] 17:50:03,957 INFO [STDOUT] org.jbpm.graph.def.DelegationException
[exec] 17:50:03,957 INFO [STDOUT] at org.jbpm.graph.def.GraphElement.raiseException(GraphElement.java:299)
[exec] 17:50:03,957 INFO [STDOUT] at org.jbpm.graph.def.GraphElement.raiseException(GraphElement.java:293)
[exec] 17:50:03,957 INFO [STDOUT] at org.jbpm.graph.def.GraphElement.raiseException(GraphElement.java:293)
[exec] 17:50:03,957 INFO [STDOUT] at org.jbpm.taskmgmt.exe.TaskMgmtInstance.invokeAssignmentHandler(TaskMgmtInstance.java:149)
[exec] 17:50:03,957 INFO [STDOUT] at org.jbpm.taskmgmt.exe.TaskInstance.assign(TaskInstance.java:137)
[exec] 17:50:03,957 INFO [STDOUT] at org.jbpm.taskmgmt.exe.TaskMgmtInstance.createTaskInstance(TaskMgmtInstance.java:102)
[exec] 17:50:03,957 INFO [STDOUT] at org.jbpm.graph.node.TaskNode.execute(TaskNode.java:136)
[exec] 17:50:03,957 INFO [STDOUT] at org.jbpm.graph.def.Node.enter(Node.java:284)
[exec] 17:50:03,957 INFO [STDOUT] at org.jbpm.graph.def.Transition.take(Transition.java:92)
[exec] 17:50:03,957 INFO [STDOUT] at org.jbpm.graph.def.Node.leave(Node.java:349)
[exec] 17:50:03,957 INFO [STDOUT] at org.jbpm.graph.node.StartState.leave(StartState.java:73)
[exec] 17:50:03,967 INFO [STDOUT] at org.jbpm.graph.exe.Token.signal(Token.java:127)
[exec] 17:50:03,967 INFO [STDOUT] at org.jbpm.graph.exe.Token.signal(Token.java:92)

[klsateesh]

Hi,

Make sure that the Token hasn't reached the End State..

Try to print the State of the Token..

Sateesh