Following is our main jPDL xml
<?xml version="1.0" encoding="UTF-8"?>
<process name="PresenceWorkflow" xmlns="http://jbpm.org/4.3/jpdl">
<start g="-9,225,80,40">
<transition to="wait for presence of user" />
</start>
<sub-process name="wait for presence of user" sub-process-key="waitForPresence" g="603,195,177,70">
<parameter-in subvar="userDetailsInstance" var="user"/><parameter-in subvar="timeoutPeriod" var="timeoutPeriodMain"/>
<parameter-out subvar="userDetailsInstance" var="user"/><parameter-out subvar="subinstanceid" var="subinstanceidMain"/>
<transition name="timeout" to="state1" g="-47,-20"/>
<transition name="success" to="state1" g="369,51:-28,-24"/>
</sub-process>
<end g="220,486,48,48" name="end1"/>
<end-error g="140,488,80,40" name="internal error"/>
<state g="649,418,92,52" name="state1" state="naas-wait">
</state> </process>
xml version="1.0" encoding="UTF-8"?>
<
process name="waitForPresence" xmlns=http://jbpm.org/4.3/jpdl>
<
start g="8,103,80,40">
<transition to="wait for presence"/></
start>
<
custom class="com.task.WaitForPresenceTask" g="121,105,100,52" name="wait for presence">
<transition to="task completion check for wait presnce"/></
custom>
<
decision expr="#{TaskCompletionStatus}" name="task completion check for wait presence" g="287,117,110,92">
<transition name="Success" to="wait for presence update" g="-46,-20"/>
<transition name="Failure" to="failure" g="-40,-20"/></
decision>
<
state name="wait for presence update" g="482,114,210,40">
<on event="timeout">
<timer duedate="5 seconds"/>
<event-listener class="com.task.WaitStateTimeoutListener">
</on>
<on event="start">
<event-listener class="com.eventlistener.WaitForPresenceStartEventListener">
<field name="subscriberVariableName"><object expr="#{userDetailsInstance}"/></field>
</event-listener>
</on>
<on event="end">
<event-listener class="com.eventlistener.WaitForPresenceCompletionEndEventListener">
<field name="subscriberVariableName"><object expr="#{userDetailsInstance}"/></field>
</event-listener>
</on>
<transition name="WAIT_STATE_TIMED_OUT" to="timeout" g="-142,-20"/>
<transition name="AVAILABLE" to="test" g="-64,-9"/>
</
state>
<
end name="success" g="666,410,80,40"/>
<end name="failure" g="277,415,80,40"/><
end name="timeout" g="445,414,48,84"/>
</
process>
Sample test case extract:
// start the main process
final ProcessInstance processInstance = executionService.startProcessInstanceByKey("PresenceWorkflow", variables,processInstanceKey);
// send signal to subprocess to get out of "wait for presence update" state.
executionService.signalExecutionById(processInstance.getId(),"AVAILABLE");
Problem faced:
1) Once execution resumes after sending the above signal workflow exists the subprocess without executing any subsequent tasks. For example, the end event listener is not invoked.
2) Unable to get the subprocess execution id. Even if we get the execution id via a hack, we get an exception sending the signal.
Any help would be very much appreciated.
Following is the subprocess jPDL