StateImpl.java revision 608:7e06bf1dcb09 
1/*
2 * Copyright (c) 2002, 2003, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.  Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26package com.sun.corba.se.spi.orbutil.fsm ;
27
28import com.sun.corba.se.impl.orbutil.fsm.NameBase ;
29
30import java.util.Map ;
31import java.util.HashMap ;
32import java.util.Set ;
33import java.util.HashSet ;
34
35import com.sun.corba.se.impl.orbutil.fsm.GuardedAction ;
36import com.sun.corba.se.impl.orbutil.fsm.NameBase ;
37
38/** Base class for all states in a StateEngine.  This must be used
39* as the base class for all states in transitions added to a StateEngine.
40*/
41public class StateImpl extends NameBase implements State {
42    private Action defaultAction ;
43    private State defaultNextState ;
44    private Map inputToGuardedActions ;
45
46    public StateImpl( String name )
47    {
48        super( name ) ;
49        defaultAction = null ;
50        inputToGuardedActions = new HashMap() ;
51    }
52
53    public void preAction( FSM fsm )
54    {
55    }
56
57    public void postAction( FSM fsm )
58    {
59    }
60
61    // Methods for use only by StateEngineImpl.
62
63    public State getDefaultNextState()
64    {
65        return defaultNextState ;
66    }
67
68    public void setDefaultNextState( State defaultNextState )
69    {
70        this.defaultNextState = defaultNextState ;
71    }
72
73    public Action getDefaultAction()
74    {
75        return defaultAction ;
76    }
77
78    public void setDefaultAction( Action defaultAction )
79    {
80        this.defaultAction = defaultAction ;
81    }
82
83    public void addGuardedAction( Input in, GuardedAction ga )
84    {
85        Set gas = (Set)inputToGuardedActions.get( in ) ;
86        if (gas == null) {
87            gas = new HashSet() ;
88            inputToGuardedActions.put( in, gas ) ;
89        }
90
91        gas.add( ga ) ;
92    }
93
94    public Set getGuardedActions( Input in )
95    {
96        return (Set)inputToGuardedActions.get( in ) ;
97    }
98}
99