[jboss-user] [JBoss jBPM] - Simple task-graph exception
Hello jBPM community
So, I've run the demos in the Getting Started links,
and in particular, the demo that designs the task-graph
for item return, with task assignments to ernie and grover
via swimlanes.
However, I would like to create a simple task-graph that
simply assigns a variable, increments it, and then, decides
if the resultant integer is even or odd and as a result performs
one of two tasks, say, display "result is even" or display
"result is odd".
I attemped to create such a simple graph as
the above. But I keep getting an exception, presumably
because of my ignorance here.
Questions:
Is an assignment (to a person) always required for any task ?
Aren't expressions (javascript-like) allowed ?
Are these of the form "a=a+1" or "#{a=a+1}" ?
Most likely, I'm doing several things wrong - omissions,
errors in my understanding of items, etc.
What pieces of the picture am I missing that are obvious
to you all ?
(processdefinition.xml, without decision, and exception included below)
Maurice Yarrow
SplashNote Systems
<process-definition
xmlns="urn:jbpm.org:jpdl-3.1" name="TestProj1">
<start-state name="start">
</start-state>
<task-node name="task1">
</task-node>
<task-node name="task2">
</task-node>
<end-state name="end1"></end-state>
</process-definition>
javax.servlet.ServletException: Error calling action method of component with id
taskform:transitionButton
javax.faces.webapp.FacesServlet.service(FacesServlet.java:109)
org.jbpm.webapp.filter.AuthenticationFilter.doFilter(AuthenticationFilter.java:56)
org.jbpm.web.JbpmContextFilter.doFilter(JbpmContextFilter.java:83)
org.jbpm.webapp.filter.LogFilter.doFilter(LogFilter.java:59)
org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:81)
root cause
javax.faces.FacesException: Error calling action method of component with id
taskform:transitionButton
org.apache.myfaces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:74)
javax.faces.component.UICommand.broadcast(UICommand.java:106)
javax.faces.component.UIViewRoot._broadcastForPhase(UIViewRoot.java:90)
javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:164)
org.apache.myfaces.lifecycle.LifecycleImpl.invokeApplication(LifecycleImpl.java:271)
org.apache.myfaces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:86)
javax.faces.webapp.FacesServlet.service(FacesServlet.java:94)
org.jbpm.webapp.filter.AuthenticationFilter.doFilter(AuthenticationFilter.java:56)
org.jbpm.web.JbpmContextFilter.doFilter(JbpmContextFilter.java:83)
org.jbpm.webapp.filter.LogFilter.doFilter(LogFilter.java:59)
org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:81)
note The full stack trace of the root cause is available in the Apache Tomcat/5.5 logs.
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