org.camunda.bpm.data
Class TaskGuard

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

All Implemented Interfaces:

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

public class TaskGuard
extends Object
implements org.camunda.bpm.engine.delegate.TaskListener, Guard, Serializable

Task guard base.
Is intended to be used as a base class for pre- and post-condition guard on user tasks. This class is intended to be subclassed and the subclass should be registered as a task listener for start and end events on the user task.

Author:

Simon Zambrovski, holisticon AG.

See Also:

Serialized Form

Field Summary

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

EVENTNAME_ASSIGNMENT, EVENTNAME_COMPLETE, EVENTNAME_CREATE, EVENTNAME_DELETE

Constructor Summary

TaskGuard()

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.DelegateTask delegateTask) 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

TaskGuard

public TaskGuard()

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.DelegateTask delegateTask)

Implementation of the event dispatching.

Specified by:

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

Parameters:

delegateExecution - process execution