Source Code Cross Referenced for ParameterMap.java in  » Web-Server » Rimfaxe-Web-Server » org » apache » catalina » util » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Web Server » Rimfaxe Web Server » org.apache.catalina.util 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         * $Header: /home/cvs/jakarta-tomcat-4.0/catalina/src/share/org/apache/catalina/util/ParameterMap.java,v 1.2 2001/07/22 20:25:13 pier Exp $
003:         * $Revision: 1.2 $
004:         * $Date: 2001/07/22 20:25:13 $
005:         *
006:         * ====================================================================
007:         *
008:         * The Apache Software License, Version 1.1
009:         *
010:         * Copyright (c) 1999 The Apache Software Foundation.  All rights
011:         * reserved.
012:         *
013:         * Redistribution and use in source and binary forms, with or without
014:         * modification, are permitted provided that the following conditions
015:         * are met:
016:         *
017:         * 1. Redistributions of source code must retain the above copyright
018:         *    notice, this list of conditions and the following disclaimer.
019:         *
020:         * 2. Redistributions in binary form must reproduce the above copyright
021:         *    notice, this list of conditions and the following disclaimer in
022:         *    the documentation and/or other materials provided with the
023:         *    distribution.
024:         *
025:         * 3. The end-user documentation included with the redistribution, if
026:         *    any, must include the following acknowlegement:
027:         *       "This product includes software developed by the
028:         *        Apache Software Foundation (http://www.apache.org/)."
029:         *    Alternately, this acknowlegement may appear in the software itself,
030:         *    if and wherever such third-party acknowlegements normally appear.
031:         *
032:         * 4. The names "The Jakarta Project", "Tomcat", and "Apache Software
033:         *    Foundation" must not be used to endorse or promote products derived
034:         *    from this software without prior written permission. For written
035:         *    permission, please contact apache@apache.org.
036:         *
037:         * 5. Products derived from this software may not be called "Apache"
038:         *    nor may "Apache" appear in their names without prior written
039:         *    permission of the Apache Group.
040:         *
041:         * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
042:         * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
043:         * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
044:         * DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
045:         * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
046:         * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
047:         * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
048:         * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
049:         * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
050:         * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
051:         * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
052:         * SUCH DAMAGE.
053:         * ====================================================================
054:         *
055:         * This software consists of voluntary contributions made by many
056:         * individuals on behalf of the Apache Software Foundation.  For more
057:         * information on the Apache Software Foundation, please see
058:         * <http://www.apache.org/>.
059:         *
060:         * [Additional notices, if required by prior licensing conditions]
061:         *
062:         */
063:
064:        package org.apache.catalina.util;
065:
066:        import java.util.HashMap;
067:        import java.util.Map;
068:
069:        /**
070:         * Extended implementation of <strong>HashMap</strong> that includes a
071:         * <code>locked</code> property.  This class can be used to safely expose
072:         * Catalina internal parameter map objects to user classes without having
073:         * to clone them in order to avoid modifications.  When first created, a
074:         * <code>ParmaeterMap</code> instance is not locked.
075:         *
076:         * @author Craig R. McClanahan
077:         * @version $Revision: 1.2 $ $Date: 2001/07/22 20:25:13 $
078:         */
079:
080:        public final class ParameterMap extends HashMap {
081:
082:            // ----------------------------------------------------------- Constructors
083:
084:            /**
085:             * Construct a new, empty map with the default initial capacity and
086:             * load factor.
087:             */
088:            public ParameterMap() {
089:
090:                super ();
091:
092:            }
093:
094:            /**
095:             * Construct a new, empty map with the specified initial capacity and
096:             * default load factor.
097:             *
098:             * @param initialCapacity The initial capacity of this map
099:             */
100:            public ParameterMap(int initialCapacity) {
101:
102:                super (initialCapacity);
103:
104:            }
105:
106:            /**
107:             * Construct a new, empty map with the specified initial capacity and
108:             * load factor.
109:             *
110:             * @param initialCapacity The initial capacity of this map
111:             * @param loadFactor The load factor of this map
112:             */
113:            public ParameterMap(int initialCapacity, float loadFactor) {
114:
115:                super (initialCapacity, loadFactor);
116:
117:            }
118:
119:            /**
120:             * Construct a new map with the same mappings as the given map.
121:             *
122:             * @param map Map whose contents are dupliated in the new map
123:             */
124:            public ParameterMap(Map map) {
125:
126:                super (map);
127:
128:            }
129:
130:            // ------------------------------------------------------------- Properties
131:
132:            /**
133:             * The current lock state of this parameter map.
134:             */
135:            private boolean locked = false;
136:
137:            /**
138:             * Return the locked state of this parameter map.
139:             */
140:            public boolean isLocked() {
141:
142:                return (this .locked);
143:
144:            }
145:
146:            /**
147:             * Set the locked state of this parameter map.
148:             *
149:             * @param locked The new locked state
150:             */
151:            public void setLocked(boolean locked) {
152:
153:                this .locked = locked;
154:
155:            }
156:
157:            /**
158:             * The string manager for this package.
159:             */
160:            private static final StringManager sm = StringManager
161:                    .getManager("org.apache.catalina.util");
162:
163:            // --------------------------------------------------------- Public Methods
164:
165:            /**
166:             * Remove all mappings from this map.
167:             *
168:             * @exception IllegalStateException if this map is currently locked
169:             */
170:            public void clear() {
171:
172:                if (locked)
173:                    throw new IllegalStateException(sm
174:                            .getString("parameterMap.locked"));
175:                super .clear();
176:
177:            }
178:
179:            /**
180:             * Associate the specified value with the specified key in this map.  If
181:             * the map previously contained a mapping for this key, the old value is
182:             * replaced.
183:             *
184:             * @param key Key with which the specified value is to be associated
185:             * @param value Value to be associated with the specified key
186:             *
187:             * @return The previous value associated with the specified key, or
188:             *  <code>null</code> if there was no mapping for key
189:             *
190:             * @exception IllegalStateException if this map is currently locked
191:             */
192:            public Object put(Object key, Object value) {
193:
194:                if (locked)
195:                    throw new IllegalStateException(sm
196:                            .getString("parameterMap.locked"));
197:                return (super .put(key, value));
198:
199:            }
200:
201:            /**
202:             * Copy all of the mappings from the specified map to this one.  These
203:             * mappings replace any mappings that this map had for any of the keys
204:             * currently in the specified Map.
205:             *
206:             * @param map Mappings to be stored into this map
207:             *
208:             * @exception IllegalStateException if this map is currently locked
209:             */
210:            public void putAll(Map map) {
211:
212:                if (locked)
213:                    throw new IllegalStateException(sm
214:                            .getString("parameterMap.locked"));
215:                super .putAll(map);
216:
217:            }
218:
219:            /**
220:             * Remove the mapping for this key from the map if present.
221:             *
222:             * @param key Key whose mapping is to be removed from the map
223:             *
224:             * @return The previous value associated with the specified key, or
225:             *  <code>null</code> if there was no mapping for that key
226:             *
227:             * @exception IllegalStateException if this map is currently locked
228:             */
229:            public Object remove(Object key) {
230:
231:                if (locked)
232:                    throw new IllegalStateException(sm
233:                            .getString("parameterMap.locked"));
234:                return (super.remove(key));
235:
236:            }
237:
238:        }
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