[jboss-user] [jBPM Users] - event listener expression
Hi,
=== Environment ==============================
- jBPM Version : 4.1
- JDK : 1.6
- Configuration : SeamConfiguration/SpringConfiguration
=== Process ==================================
<on event="end">
| <event-listener expr="#{processEndLogActivityHandler}">
| <property name="processEndStatus"><string
value="successful"/></property>
| </event-listener>
| </on>
=== Stacktrace ================================
java.lang.NullPointerException
at
org.jbpm.pvm.internal.model.op.ExecuteEventListener.perform(ExecuteEventListener.java:81)
at
org.jbpm.pvm.internal.model.ExecutionImpl.performAtomicOperationSync(ExecutionImpl.java:637)
at
org.jbpm.pvm.internal.model.ExecutionImpl.performAtomicOperation(ExecutionImpl.java:597)
at org.jbpm.pvm.internal.model.ExecutionImpl.signal(ExecutionImpl.java:398)
at org.jbpm.pvm.internal.cmd.SignalCmd.execute(SignalCmd.java:61)
at org.jbpm.pvm.internal.cmd.SignalCmd.execute(SignalCmd.java:35)
at
org.jbpm.pvm.internal.svc.DefaultCommandService.execute(DefaultCommandService.java:42)
at
org.jbpm.pvm.internal.tx.SeamTransactionInterceptor.execute(SeamTransactionInterceptor.java:40)
at
org.jbpm.pvm.internal.svc.EnvironmentInterceptor.execute(EnvironmentInterceptor.java:46)
at org.jbpm.pvm.internal.svc.RetryInterceptor.execute(RetryInterceptor.java:55)
at
org.jbpm.pvm.internal.svc.ExecutionServiceImpl.signalExecutionById(ExecutionServiceImpl.java:84)
=== Problem description =========================
According to jbpdl-4.0.xsl an event-listener can have an 'expr' attribute instead
of an 'class' attribute. But why I get an exception if I use the 'expr'
attribute. The 'expr' works fine in java and custom activities.
As I have seen it is not considered in
EventListenerBinding->JpdlParser->parseObjectDescriptor(...)
Am I right, or is it in any way possible to use expression here?
kind regards,
tony
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