[JBoss jBPM] - Problem with transition
by roberto
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
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17 years, 6 months