001: /* ====================================================================
002: * The JRefactory License, Version 1.0
003: *
004: * Copyright (c) 2001 JRefactory. All rights reserved.
005: *
006: * Redistribution and use in source and binary forms, with or without
007: * modification, are permitted provided that the following conditions
008: * are met:
009: *
010: * 1. Redistributions of source code must retain the above copyright
011: * notice, this list of conditions and the following disclaimer.
012: *
013: * 2. Redistributions in binary form must reproduce the above copyright
014: * notice, this list of conditions and the following disclaimer in
015: * the documentation and/or other materials provided with the
016: * distribution.
017: *
018: * 3. The end-user documentation included with the redistribution,
019: * if any, must include the following acknowledgment:
020: * "This product includes software developed by the
021: * JRefactory (http://www.sourceforge.org/projects/jrefactory)."
022: * Alternately, this acknowledgment may appear in the software itself,
023: * if and wherever such third-party acknowledgments normally appear.
024: *
025: * 4. The names "JRefactory" must not be used to endorse or promote
026: * products derived from this software without prior written
027: * permission. For written permission, please contact seguin@acm.org.
028: *
029: * 5. Products derived from this software may not be called "JRefactory",
030: * nor may "JRefactory" appear in their name, without prior written
031: * permission of Chris Seguin.
032: *
033: * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
034: * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
035: * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
036: * DISCLAIMED. IN NO EVENT SHALL THE CHRIS SEGUIN OR
037: * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
038: * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
039: * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
040: * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
041: * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
042: * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
043: * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
044: * SUCH DAMAGE.
045: * ====================================================================
046: *
047: * This software consists of voluntary contributions made by many
048: * individuals on behalf of JRefactory. For more information on
049: * JRefactory, please see
050: * <http://www.sourceforge.org/projects/jrefactory>.
051: */
052: package org.acm.seguin.version;
053:
054: import java.util.Hashtable;
055:
056: /**
057: * Cache of files - so that it doesn't take so long to get the menu
058: *
059: *@author Chris Seguin
060: *@created June 17, 1999
061: */
062: public class VersionControlCache {
063: // Instance Variables
064: private Hashtable cache;
065:
066: /**
067: * Description of the Field
068: */
069: public final static int ADD = 0;
070: /**
071: * Description of the Field
072: */
073: public final static int CHECK_IN = 1;
074: /**
075: * Description of the Field
076: */
077: public final static int CHECK_OUT = 2;
078: /**
079: * Description of the Field
080: */
081: public final static int CHECK_IN_PROGRESS = 3;
082: /**
083: * Description of the Field
084: */
085: public final static int CHECK_OUT_PROGRESS = 4;
086: /**
087: * Description of the Field
088: */
089: public final static int ADD_PROGRESS = 5;
090:
091: // Class Variables
092: private static VersionControlCache ssc = null;
093:
094: /**
095: * Constructor for the VersionControlCache object
096: */
097: protected VersionControlCache() {
098: cache = new Hashtable();
099: }
100:
101: /**
102: * Looks up a file in the cache
103: *
104: *@param filename Description of Parameter
105: *@return The InCache value
106: */
107: public boolean isInCache(String filename) {
108: return cache.get(filename) != null;
109: }
110:
111: /**
112: * Looks up a file in the cache
113: *
114: *@param filename Description of Parameter
115: *@return Description of the Returned Value
116: */
117: public int lookup(String filename) {
118: Integer stored = (Integer) cache.get(filename);
119: if (stored == null) {
120: return ADD;
121: }
122:
123: return stored.intValue();
124: }
125:
126: /**
127: * Add to the cache
128: *
129: *@param filename the name of the file
130: *@param type the state
131: */
132: public void add(String filename, int type) {
133: cache.put(filename, new Integer(type));
134: }
135:
136: /**
137: * Return the cache
138: *
139: *@return the cache
140: */
141: public static VersionControlCache getCache() {
142: if (ssc == null) {
143: init();
144: }
145:
146: return ssc;
147: }
148:
149: /**
150: * Create a source safe cache
151: */
152: private static synchronized void init() {
153: if (ssc == null) {
154: ssc = new VersionControlCache();
155: }
156: }
157: }
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