Class EventStateMachine

java.lang.Object

com.iantapply.orchestra.engine.EventStateMachine

public final class EventStateMachine
extends Object

Validates legal transitions between persisted execution states.

Constructor Summary

Constructors

Constructor	Description
EventStateMachine()	Creates a validator for the fixed Orchestra transition graph.

Method Summary

Modifier and Type	Method	Description
void	requireTransition(EventStatus from, EventStatus to)	Rejects a transition that is not present in the transition graph.

Methods inherited from class Object

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

Constructor Details

EventStateMachine

public EventStateMachine()

Creates a validator for the fixed Orchestra transition graph.

Method Details

requireTransition

public void requireTransition(EventStatus from,
 EventStatus to)

Rejects a transition that is not present in the transition graph.

Parameters:

from - current status

to - requested status

Throws:

IllegalStateException - when the transition is not allowed