org.camunda.bpm.data
Class ActivityGuard

java.lang.Object
  org.camunda.bpm.data.ActivityGuard

All Implemented Interfaces:

Serializable, Guard, org.camunda.bpm.engine.delegate.ExecutionListener

public abstract class ActivityGuard
extends Object
implements org.camunda.bpm.engine.delegate.ExecutionListener, Serializable, Guard

Activity guard base.
Is intended to be used as a base class for pre- and post-condition guard on regular activities. This class is intended to be subclassed and the subclass should be registered as an execution listener for start and end events on the activity.

Author:

Simon Zambrovski, holisticon AG.

See Also:

Serialized Form

Field Summary

Fields inherited from interface org.camunda.bpm.engine.delegate.ExecutionListener

EVENTNAME_END, EVENTNAME_START, EVENTNAME_TAKE

Constructor Summary

ActivityGuard()

Method Summary

void	checkPostconditions(org.camunda.bpm.engine.delegate.DelegateExecution execution) Empty implementation of pre-condition checks.
void	checkPreconditions(org.camunda.bpm.engine.delegate.DelegateExecution execution) Empty implementation of post-condition checks.
void	notify(org.camunda.bpm.engine.delegate.DelegateExecution delegateExecution) Implementation of the event dispatching.

Methods inherited from class java.lang.Object

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

Constructor Detail

ActivityGuard

public ActivityGuard()

Method Detail

checkPostconditions

public void checkPostconditions(org.camunda.bpm.engine.delegate.DelegateExecution execution)
                         throws IllegalStateException

Empty implementation of pre-condition checks.
Override this method to implement your own. Please throw IllegalStateException on contract violations.

Specified by:

checkPostconditions in interface Guard

Parameters:

execution - current execution.

Throws:

IllegalStateException - thrown if post-condition is not met.

checkPreconditions

public void checkPreconditions(org.camunda.bpm.engine.delegate.DelegateExecution execution)
                        throws IllegalStateException

Empty implementation of post-condition checks.
Override this method to implement your own. Please throw IllegalStateException on contract violations.

Specified by:

checkPreconditions in interface Guard

Parameters:

execution - current execution.

Throws:

IllegalStateException - thrown if pre-condition is not met.

notify

public final void notify(org.camunda.bpm.engine.delegate.DelegateExecution delegateExecution)
                  throws Exception

Implementation of the event dispatching.

Specified by:

notify in interface org.camunda.bpm.engine.delegate.ExecutionListener

Parameters:

delegateExecution - process execution

Throws:

Exception