Problem with transition
I'm rewriting a Web User Interface for JBpm to integrate it on my own application.
I have some problem using transition API
I have a definition like this:
<start-state name="Submit-SalesOrder"> <description> Sales Order General </description> <task name="SalesOrder" swimlane="DataEntry"> <description> Sales Order task </description> <controller> <variable access="read,write,required" name="Field1" mapped-name="Field1"></variable> </controller> </task> <transition to="Evaluate_Order" name="Start"></transition> </start-state> <task-node name="Evaluate_Order"> <description> Evaluate Order General </description> <task blocking="true" name="Approve" swimlane="CountryManager"> <description> Approve Task </description> <controller> <variable access="read,write" name="AdditionalDiscount" mapped-name="Additional Discount"></variable> </controller> </task> <transition to="Place-Order" name="Yes"> <description> yes! I Approve It </description> </transition> <transition to="WhyNot" name="No"> <description> No! I discart It </description> </transition> </task-node> <task-node name="WhyNot"> <task blocking="true" swimlane="CountryManager"> <controller> <variable access="read,write" name="Comment" mapped-name="Comment"></variable> </controller> </task> <transition to="ChangeBlock-CloseOrder" name="CloseOrder"></transition> </task-node> ...
I my java code i can create successful the process instance
...
JbpmContext vJbpmContext = getJbpmContext();
try
{
ProcessInstance vProcessInstance = vJbpmContext.newProcessInstanceForUpdate(aProcessDefinitionName);
vProcessInstanceId = vProcessInstance.getId();
ContextInstance vContextInstance = vProcessInstance.getContextInstance();
Token vToken = vProcessInstance.getRootToken();
vToken.signal();
}
finally
{
closeContext(vJbpmContext);
}
...
I can retrieve transition from task instance... but when I try to "invoke" the transition
...
vTaskInstance = vJbpmContext.getTaskInstance(vTaskId);
if (vTaskInstance.isBlocking())
{
if (vTaskInstance.getStart() == null)
vTaskInstance.start();
if (vTaskInstance.getEnd() == null)
vTaskInstance.end();
}
vTaskInstance.getToken().signal("Yes"); // or also ("No")
...
The signa is sent to the default transition and I recieve an exception that says "transition doesnt exists on WhyNot task.... "
I believe I dont' know exactly the correct flow.
Can someone help me ?
Or where I can found a simple example how to manage it?
thanks