com.sun.corba.se.spi.orbutil.fsm

Interface State

All Known Implementing Classes:

StateImpl

public interface State

This interface must be implemented by any class that is used as a state in a FSM. The FSM only needs the identity of this object, so all that is really needs is the default equals implementation. The toString() method should also be overridden to give a concise description or name of the state. The StateImpl class handles this.

Pre- and post- actions are taken only on completed transitions between different states. Assume that the FSM is in state A, and the FSM will transition to state B under input I with action X. If A != B and X completes successfully, then after X completes execution, A.postAction is executed, followed by B.preAction.

Author:

Ken Cavanaugh

Method Summary

Modifier and Type	Method and Description
void	postAction(FSM fsm) Method that defines action that occurs whenever this state is exited.
void	preAction(FSM fsm) Method that defines action that occurs whenever this state is entered.

Method Detail

preAction

void preAction(FSM fsm)

Method that defines action that occurs whenever this state is entered. Any exceptions thrown by this method are ignored.

postAction

void postAction(FSM fsm)

Method that defines action that occurs whenever this state is exited. Any exceptions thrown by this method are ignored.