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Action.javaAPI DocJava SE 5 API1314Fri Aug 26 14:54:38 BST 2005com.sun.corba.se.spi.orbutil.fsm

Action

public interface Action
Description goes here
version
@(#)Action.java 1.11 03/12/19
author
Ken Cavanaugh

Fields Summary
Constructors Summary
Methods Summary
public voiddoIt(FSM fsm, Input in)
Called by the state engine to perform an action before a state transition takes place. The FSM is passed so that the Action may set the next state in cases when that is required. FSM and Input together allow actions to be written that depend on the state and input, but this should generally be avoided, as the reason for a state machine in the first place is to cleanly separate the actions and control flow. Note that an action should complete in a timely manner. If the state machine is used for concurrency control with multiple threads, the action must not allow multiple threads to run simultaneously in the state machine, as the state could be corrupted. Any exception thrown by the Action for the transition will be propagated to doIt.

param
FSM fsm is the state machine causing this action.
param
Input in is the input that caused the transition.