org.camunda.bpm.engine.impl.pvm.runtime
Class AtomicOperationCancelScope

java.lang.Object
  org.camunda.bpm.engine.impl.pvm.runtime.AtomicOperationCancelScope

All Implemented Interfaces:

AtomicOperation

Direct Known Subclasses:

AtomicOperationActivityStartCancelScope, AtomicOperationTransitionCancelScope

public abstract class AtomicOperationCancelScope
extends Object
implements AtomicOperation

Base class for implementing an atomic operation which performs cancel scope behavior.

Cancel scope behavior is different from "destroy scope" behavior. Destroy scope will delete the scope execution for the current scope. cancel scope will not delete the scope execution itself but will rather

• find the scope execution for the current scope,
• perform an interrupt: this will delete any executions / subprocess instances etc which are child executions of the scope
• set the scope execution to the cancelling activity and move forward.

So as opposed to destroy scope we will not delete the current scope execution but cancel anything that is happening in the current scope and then, still in the current scope, execute the canceling activity.

Usage in BPMN:

In the context of BPMN this behavior is required for interrupting constructs like

• boundary events with cancelActivity="true"
• interrupting event subprocesses,
• terminate end events etc..

Author:

Daniel Meyer, Roman Smirnov

Field Summary

Fields inherited from interface org.camunda.bpm.engine.impl.pvm.runtime.AtomicOperation

ACTIVITY_END, ACTIVITY_EXECUTE, ACTIVITY_START, ACTIVITY_START_CANCEL_SCOPE, ACTIVITY_START_CONCURRENT, DELETE_CASCADE, DELETE_CASCADE_FIRE_ACTIVITY_END, PROCESS_END, PROCESS_START, PROCESS_START_INITIAL, TRANSITION_CANCEL_SCOPE, TRANSITION_CREATE_SCOPE, TRANSITION_DESTROY_SCOPE, TRANSITION_NOTIFY_LISTENER_END, TRANSITION_NOTIFY_LISTENER_START, TRANSITION_NOTIFY_LISTENER_TAKE

Constructor Summary

AtomicOperationCancelScope()

Method Summary

void	execute(InterpretableExecution execution)
protected abstract PvmActivity	getCancellingActivity(InterpretableExecution execution)
boolean	isAsync(InterpretableExecution execution)
protected abstract void	scopeCancelled(InterpretableExecution execution)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.camunda.bpm.engine.impl.pvm.runtime.AtomicOperation

getCanonicalName

Constructor Detail

AtomicOperationCancelScope

public AtomicOperationCancelScope()

Method Detail

execute

public void execute(InterpretableExecution execution)

Specified by:

execute in interface AtomicOperation

scopeCancelled

protected abstract void scopeCancelled(InterpretableExecution execution)

getCancellingActivity

protected abstract PvmActivity getCancellingActivity(InterpretableExecution execution)

isAsync

public boolean isAsync(InterpretableExecution execution)

Specified by:

isAsync in interface AtomicOperation