StateImpl.java

/*
 * Copyright (c) 2002, 2003, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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package org.jboss.com.sun.corba.se.spi.orbutil.fsm;

import java.util.HashMap;
import java.util.HashSet;
import java.util.Map;
import java.util.Set;

import org.jboss.com.sun.corba.se.impl.orbutil.fsm.GuardedAction;
import org.jboss.com.sun.corba.se.impl.orbutil.fsm.NameBase;

/**
 * Base class for all states in a StateEngine. This must be used as the base class for all states in transitions added
 * to a StateEngine.
 */
public class StateImpl extends NameBase implements State
{
    private Action defaultAction;

    private State defaultNextState;

    private Map<Input, Set<GuardedAction>> inputToGuardedActions;

    public StateImpl(String name)
    {
        super(name);
        defaultAction = null;
        inputToGuardedActions = new HashMap<Input, Set<GuardedAction>>();
    }

    public void preAction(FSM fsm)
    {
    }

    public void postAction(FSM fsm)
    {
    }

    // Methods for use only by StateEngineImpl.

    public State getDefaultNextState()
    {
        return defaultNextState;
    }

    public void setDefaultNextState(State defaultNextState)
    {
        this.defaultNextState = defaultNextState;
    }

    public Action getDefaultAction()
    {
        return defaultAction;
    }

    public void setDefaultAction(Action defaultAction)
    {
        this.defaultAction = defaultAction;
    }

    public void addGuardedAction(Input in, GuardedAction ga)
    {
        Set<GuardedAction> gas = inputToGuardedActions.get(in);
        if (gas == null)
        {
            gas = new HashSet<GuardedAction>();
            inputToGuardedActions.put(in, gas);
        }

        gas.add(ga);
    }

    public Set<GuardedAction> getGuardedActions(Input in)
    {
        return inputToGuardedActions.get(in);
    }
}