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

Class Guard.Complement

java.lang.Object

com.sun.corba.se.impl.orbutil.fsm.NameBase

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

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

All Implemented Interfaces:

Guard

Enclosing interface:

Guard

public static final class Guard.Complement
extends GuardBase

Nested Class Summary

Nested classes/interfaces inherited from interface com.sun.corba.se.spi.orbutil.fsm.Guard

Guard.Complement, Guard.Result

Constructor Summary

Constructors

Constructor and Description
Guard.Complement(GuardBase guard)

Method Summary

Methods

Modifier and Type	Method and Description
Guard.Result	evaluate(FSM fsm, Input in) Called by the state engine to determine whether a transition is enabled, defered, or disabled.

Methods inherited from class com.sun.corba.se.impl.orbutil.fsm.NameBase

getName, toString

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

Guard.Complement

public Guard.Complement(GuardBase guard)

Method Detail

evaluate

public Guard.Result evaluate(FSM fsm,
                    Input in)

Description copied from interface: Guard

Called by the state engine to determine whether a transition is enabled, defered, or disabled. The result is interpreted as follows:

• ENABLED if the transition is ready to proceed
• DISABLED if the transition is not ready to proceed
• DEFERED if the action associated with the transition is to be deferred. This means that the input will not be acted upon, but rather it will be saved for later execution. Typically this is implemented using a CondVar wait, and the blocked thread represents the defered input. The defered input is retried when the thread runs again.

Parameters:

fsm - the state machine causing this action.

in - the input that caused the transition.