Source Code Cross Referenced for QName.java in  » EJB-Server-resin-3.1.5 » resin » com » caucho » naming » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » EJB Server resin 3.1.5 » resin » com.caucho.naming 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         * Copyright (c) 1998-2008 Caucho Technology -- all rights reserved
003:         *
004:         * This file is part of Resin(R) Open Source
005:         *
006:         * Each copy or derived work must preserve the copyright notice and this
007:         * notice unmodified.
008:         *
009:         * Resin Open Source is free software; you can redistribute it and/or modify
010:         * it under the terms of the GNU General Public License as published by
011:         * the Free Software Foundation; either version 2 of the License, or
012:         * (at your option) any later version.
013:         *
014:         * Resin Open Source is distributed in the hope that it will be useful,
015:         * but WITHOUT ANY WARRANTY; without even the implied warranty of
016:         * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, or any warranty
017:         * of NON-INFRINGEMENT.  See the GNU General Public License for more
018:         * details.
019:         *
020:         * You should have received a copy of the GNU General Public License
021:         * along with Resin Open Source; if not, write to the
022:         *   Free SoftwareFoundation, Inc.
023:         *   59 Temple Place, Suite 330
024:         *   Boston, MA 02111-1307  USA
025:         *
026:         * @author Scott Ferguson
027:         */
028:
029:        package com.caucho.naming;
030:
031:        import com.caucho.util.L10N;
032:
033:        import javax.naming.Context;
034:        import javax.naming.InvalidNameException;
035:        import javax.naming.Name;
036:        import javax.naming.NamingException;
037:        import java.util.ArrayList;
038:        import java.util.Collections;
039:        import java.util.Enumeration;
040:
041:        /**
042:         * Represents a parsed JNDI name.
043:         */
044:        public class QName implements  Name {
045:            private static L10N L = new L10N(QName.class);
046:
047:            // The owning root context.
048:            protected Context _context;
049:
050:            // The name items
051:            private ArrayList<String> _items = new ArrayList<String>();
052:
053:            /**
054:             * Creates a root name based on a context.
055:             *
056:             * @param context the root context
057:             */
058:            public QName(Context context) {
059:                _context = context;
060:            }
061:
062:            /**
063:             * Creates a new name with a single component.
064:             *
065:             * @param context the root context
066:             * @param first the first name component
067:             */
068:            public QName(Context context, String first) {
069:                _context = context;
070:
071:                if (first != null)
072:                    _items.add(first);
073:            }
074:
075:            /**
076:             * Creates a new name with two components
077:             *
078:             * @param context the root context
079:             * @param first the first name component
080:             * @param tail the tail name component
081:             */
082:            public QName(Context context, String first, String rest) {
083:                _context = context;
084:
085:                if (first != null)
086:                    _items.add(first);
087:                if (rest != null)
088:                    _items.add(rest);
089:            }
090:
091:            /**
092:             * Clones the name.
093:             */
094:            public Object clone() {
095:                QName name = new QName(_context);
096:
097:                for (int i = 0; i < _items.size(); i++)
098:                    name._items.add(_items.get(i));
099:
100:                return name;
101:            }
102:
103:            public int size() {
104:                return _items.size();
105:            }
106:
107:            public boolean isEmpty() {
108:                return _items.size() == 0;
109:            }
110:
111:            public Enumeration getAll() {
112:                return Collections.enumeration(_items);
113:            }
114:
115:            public String get(int pos) {
116:                if (pos < _items.size())
117:                    return (String) _items.get(pos);
118:                else
119:                    return null;
120:            }
121:
122:            public Name getPrefix(int posn) {
123:                QName name = new QName(_context);
124:
125:                for (int i = 0; i < posn; i++)
126:                    name._items.add(_items.get(i));
127:
128:                return name;
129:            }
130:
131:            public Name getSuffix(int posn) {
132:                Context subcontext = _context;
133:
134:                for (int i = 0; i < posn; i++) {
135:                    String item = (String) _items.get(i);
136:                    try {
137:                        Object obj = subcontext.lookup(item);
138:                        if (obj instanceof  Context)
139:                            subcontext = (Context) obj;
140:                        else
141:                            break;
142:                    } catch (NamingException e) {
143:                        break;
144:                    }
145:                }
146:
147:                QName name = new QName(subcontext);
148:                for (int i = posn; i < _items.size(); i++) {
149:                    String item = (String) _items.get(i);
150:
151:                    name._items.add(_items.get(i));
152:                }
153:
154:                return name;
155:            }
156:
157:            /**
158:             * Returns true if the argument is a prefix of the name.
159:             *
160:             * @param name the Name to start as a prefix.
161:             */
162:            public boolean startsWith(Name name) {
163:                if (name == null)
164:                    return false;
165:
166:                if (size() < name.size())
167:                    return false;
168:
169:                for (int i = 0; i < name.size(); i++) {
170:                    if (!get(i).equals(name.get(i)))
171:                        return false;
172:                }
173:
174:                return true;
175:            }
176:
177:            public boolean endsWith(Name name) {
178:                if (name == null)
179:                    return false;
180:
181:                int nameSize = name.size();
182:                if (size() < nameSize)
183:                    return false;
184:
185:                int offset = size() - nameSize;
186:                for (int i = 0; i < nameSize; i++)
187:                    if (!get(i + offset).equals(name.get(i)))
188:                        return false;
189:
190:                return true;
191:            }
192:
193:            /**
194:             * Append a name to the current name.
195:             *
196:             * @param suffix the name to add as a suffix
197:             *
198:             * @return the modified name
199:             */
200:            public Name addAll(Name suffix) throws InvalidNameException {
201:                for (int i = 0; i < suffix.size(); i++)
202:                    _items.add(suffix.get(i));
203:
204:                return this ;
205:            }
206:
207:            /**
208:             * Insert a name to the current name.
209:             *
210:             * @param suffix the name to add as a suffix
211:             *
212:             * @return the modified name
213:             */
214:            public Name addAll(int posn, Name suffix)
215:                    throws InvalidNameException {
216:                for (int i = 0; i < suffix.size(); i++)
217:                    _items.add(posn, suffix.get(i));
218:
219:                return this ;
220:            }
221:
222:            /**
223:             * Add a component to the tail of the name, returning the name.
224:             *
225:             * @param comp the new component to add.
226:             *
227:             * @return the modified name
228:             */
229:            public Name add(String comp) throws InvalidNameException {
230:                _items.add(comp);
231:
232:                return this ;
233:            }
234:
235:            /**
236:             * Add a component at a specific position, returning the name.
237:             *
238:             * @return the modified name
239:             */
240:            public Name add(int posn, String comp) throws InvalidNameException {
241:                _items.add(posn, comp);
242:
243:                return this ;
244:            }
245:
246:            public Object remove(int posn) throws InvalidNameException {
247:                _items.remove(posn);
248:
249:                return this ;
250:            }
251:
252:            /**
253:             * Returns the name's hash code.
254:             */
255:            public int hashCode() {
256:                int hashCode = 337;
257:
258:                for (int i = size() - 1; i >= 0; i--)
259:                    hashCode = 65521 * hashCode + get(i).hashCode();
260:
261:                return hashCode;
262:            }
263:
264:            /**
265:             * Returns true if the object is an equivalent name.
266:             *
267:             * @param obj the object to test for equality.
268:             */
269:            public boolean equals(Object obj) {
270:                if (!(obj instanceof  Name))
271:                    return false;
272:
273:                Name name = (Name) obj;
274:
275:                if (size() != name.size())
276:                    return false;
277:
278:                for (int i = size() - 1; i >= 0; i--) {
279:                    if (!get(i).equals(name.get(i)))
280:                        return false;
281:                }
282:
283:                return true;
284:            }
285:
286:            /**
287:             * Compares the name to another name.
288:             *
289:             * @return -1 if less than b, 0 if equal, or 1 if greater chan
290:             */
291:            public int compareTo(Object rawB) {
292:                if (!(rawB instanceof  Name))
293:                    return -1;
294:
295:                Name b = (Name) rawB;
296:
297:                for (int i = 0; i < size(); i++) {
298:                    if (i >= b.size())
299:                        return 1;
300:
301:                    String sa = (String) get(i);
302:                    String sb = (String) b.get(i);
303:
304:                    int cmp = sa.compareTo(sb);
305:                    if (cmp != 0)
306:                        return cmp;
307:                }
308:
309:                if (size() == b.size())
310:                    return 0;
311:                else
312:                    return -1;
313:            }
314:
315:            /**
316:             * Converts the name to a string.
317:             */
318:            public String toString() {
319:                String name = null;
320:
321:                for (int i = 0; i < size(); i++) {
322:                    String str = (String) get(i);
323:
324:                    if (name != null) {
325:                        try {
326:                            name = _context.composeName(str, name);
327:                        } catch (NamingException e) {
328:                            name = name + "/" + str;
329:                        }
330:                    } else
331:                        name = str;
332:                }
333:
334:                return name == null ? "" : name;
335:            }
336:        }
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