001 //$HeadURL: https://svn.wald.intevation.org/svn/deegree/base/branches/2.3_testing/src/org/deegree/security/session/Session.java $
002 /*----------------------------------------------------------------------------
003 This file is part of deegree, http://deegree.org/
004 Copyright (C) 2001-2009 by:
005 Department of Geography, University of Bonn
006 and
007 lat/lon GmbH
008
009 This library is free software; you can redistribute it and/or modify it under
010 the terms of the GNU Lesser General Public License as published by the Free
011 Software Foundation; either version 2.1 of the License, or (at your option)
012 any later version.
013 This library is distributed in the hope that it will be useful, but WITHOUT
014 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
015 FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
016 details.
017 You should have received a copy of the GNU Lesser General Public License
018 along with this library; if not, write to the Free Software Foundation, Inc.,
019 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
020
021 Contact information:
022
023 lat/lon GmbH
024 Aennchenstr. 19, 53177 Bonn
025 Germany
026 http://lat-lon.de/
027
028 Department of Geography, University of Bonn
029 Prof. Dr. Klaus Greve
030 Postfach 1147, 53001 Bonn
031 Germany
032 http://www.geographie.uni-bonn.de/deegree/
033
034 e-mail: info@deegree.org
035 ----------------------------------------------------------------------------*/
036 package org.deegree.security.session;
037
038 import java.util.Collections;
039 import java.util.HashMap;
040 import java.util.Map;
041
042 /**
043 * @author <a href="mailto:poth@lat-lon.de">Andreas Poth </a>
044 * @author last edited by: $Author: mschneider $
045 *
046 * @version $Revision: 18195 $, $Date: 2009-06-18 17:55:39 +0200 (Do, 18. Jun 2009) $
047 */
048
049 public class Session {
050
051 private SessionID sessionID = null;
052
053 private String user = null;
054
055 private Map<Object, Object> attributes = Collections.synchronizedMap( new HashMap<Object, Object>() );
056
057 /**
058 * creates a session that never expires for an anonymous user
059 */
060 public Session() {
061 this.sessionID = new SessionID( -1 );
062 }
063
064 /**
065 * creates a session that never expires
066 *
067 * @param user
068 * user the session is assigned to
069 */
070 public Session( String user ) {
071 this.sessionID = new SessionID( -1 );
072 this.user = user;
073 }
074
075 /**
076 * creates a session with a specific lifetime for an anonymous user. the expiration date will be
077 * updated each time a user accesses his session
078 *
079 * @param duration
080 */
081 public Session( int duration ) {
082 this( null, duration );
083 }
084
085 /**
086 * creates a session with a specific lifetime. the expiration date will be updated each time a
087 * uses accesses his session
088 *
089 * @param duration
090 * @param user
091 */
092 public Session( String user, int duration ) {
093 this.sessionID = new SessionID( duration );
094 this.user = user;
095 }
096
097 /**
098 * creates a session with a specific SessionID for an anonymous user. the expiration date will
099 * be updated each time a uses accesses his session
100 *
101 * @param sessionID
102 */
103 public Session( SessionID sessionID ) {
104 this( null, sessionID );
105 }
106
107 /**
108 * creates a session with a specific SessionID. the expiration date will be updated each time a
109 * uses accesses his session
110 *
111 * @param sessionID
112 * @param user
113 */
114 public Session( String user, SessionID sessionID ) {
115 super();
116 this.sessionID = sessionID;
117 this.user = user;
118 }
119
120 /**
121 * returns the name user the user who owns the session. returns null if its a session for an
122 * anonymous user
123 *
124 * @return the name user the user who owns the session. returns <code>null</code> if its a
125 * session for an anonymous user
126 *
127 */
128 public String getUser() {
129 return user;
130 }
131
132 /**
133 * adds an attribute to the session. calling this method will reset the expiration date of the
134 * encapsulated sessionID<br>
135 * this method throws an exception if the sessinID has been killed or is alive anymore
136 *
137 * @param key
138 * @param value
139 * @throws SessionStatusException
140 */
141 public void addAttribute( Object key, Object value )
142 throws SessionStatusException {
143 sessionID.reset();
144 attributes.put( key, value );
145 }
146
147 /**
148 * returns the values of the attribute identified by the passed key. calling this method will
149 * reset the expiration date of the encapsulated sessionID<br>
150 * this method throws an exception if the sessinID has been killed or is alive anymore
151 *
152 * @param key
153 * @return the values of the attribute identified by the passed key. calling this method will
154 * reset the expiration date of the encapsulated sessionID
155 * @throws SessionStatusException
156 */
157 public Object getAttribute( Object key )
158 throws SessionStatusException {
159 sessionID.reset();
160 return attributes.get( key );
161 }
162
163 /**
164 * removes the attribute identified by the passed key from the session. calling this method will
165 * reset the expiration date of the encapsulated sessionID<br>
166 * this method throws an exception if the sessinID has been killed or is alive anymore
167 *
168 * @param key
169 * @return the attribute
170 * @throws SessionStatusException
171 */
172 public Object removeAttribute( Object key )
173 throws SessionStatusException {
174 sessionID.reset();
175 return attributes.remove( key );
176 }
177
178 /**
179 * returns true if the session is still alive or false if the expiration date of the sessionID
180 * has been reached
181 *
182 * @return <code>true</code> if the session is still alive or <code>false</code> if the
183 * expiration date of the sessionID has been reached
184 */
185 public boolean isAlive() {
186 return sessionID.isAlive();
187 }
188
189 /**
190 * returns the sessionID encapsulated in this session.
191 *
192 * @return the sessionID encapsulated in this session.
193 *
194 */
195 public SessionID getSessionID() {
196 return sessionID;
197 }
198
199 /**
200 * kills a Session by marking the encapsulated SessionID as invalid. A killed SessionID can't be
201 * reseted
202 */
203 public void close() {
204 sessionID.close();
205 }
206
207 /**
208 * resets the expiration date of the session
209 *
210 * @throws SessionStatusException
211 *
212 */
213 public void reset()
214 throws SessionStatusException {
215 sessionID.reset();
216 }
217 }