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org.apache.lenya.cms.usecase
Class StateMachine

java.lang.Object
  org.apache.lenya.cms.usecase.StateMachine

public class StateMachine
extends java.lang.Object

A simple state machine.

Nested Class Summary

static class	StateMachine.Model A state machine model.
static class	StateMachine.Transition A transition switches from a source state to a destination state if an event is invoked.

Constructor Summary

StateMachine(StateMachine.Model model)

Method Summary

protected boolean	canFire(StateMachine.Transition t, java.lang.String event)
protected void	checkTransition(java.lang.String event, StateMachine.Transition transition)
protected StateMachine.Transition	getTransition(java.lang.String event)

Methods inherited from class java.lang.Object

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

Constructor Detail

StateMachine

public StateMachine(StateMachine.Model model)

Parameters:

model - The model to use.

Method Detail

getTransition

protected StateMachine.Transition getTransition(java.lang.String event)

canFire

protected boolean canFire(StateMachine.Transition t,
                          java.lang.String event)

checkTransition

protected void checkTransition(java.lang.String event,
                               StateMachine.Transition transition)