Annotation of java/classes/org/w3c/jigsaw/servlet/JigsawHttpSession.java, revision 1.6
1.1 bmahe 1: // JigsawHttpSession.java
1.6 ! bmahe 2: // $Id: JigsawHttpSession.java,v 1.5 1998/06/08 12:06:30 bmahe Exp $
1.1 bmahe 3: // (c) COPYRIGHT MIT and INRIA, 1998.
4: // Please first read the full copyright statement in file COPYRIGHT.html
5:
6: package org.w3c.jigsaw.servlet;
7:
8: import java.io.*;
9: import javax.servlet.*;
10: import javax.servlet.http.*;
11: import java.net.*;
12: import java.util.*;
13:
14: /**
1.6 ! bmahe 15: * @version $Revision: 1.5 $
1.1 bmahe 16: * @author Benoît Mahé (bmahe@w3.org)
17: */
18: public class JigsawHttpSession implements HttpSession {
19:
20: private JigsawHttpSessionContext sc = null;
21:
22: private String id = null;
23:
24: private long creationTime = -1;
25: private long lastAccessedTime = -1;
26:
27: private boolean isValid = false;
28: private boolean isNew = false;
29:
30: private Cookie cookie = null;
31:
32: private Hashtable values = null;
33:
1.6 ! bmahe 34: private int maxidle = -1;
! 35:
1.5 bmahe 36: /**
37: * Returns the identifier assigned to this session. An HttpSession's
38: * identifier is a unique string that is created and maintained by
39: * HttpSessionContext.
40: * @return the identifier assigned to this session
41: * @exception IllegalStateException if an attempt is made to access
42: * session data after the session has been invalidated
43: */
1.1 bmahe 44: public String getId() {
45: return id;
46: }
47:
1.5 bmahe 48: /**
49: * Returns the context in which this session is bound.
50: * @return the context in which this session is bound.
51: * @exception IllegalStateException if an attempt is made to access
52: * session data after the session has been invalidated
1.6 ! bmahe 53: * @deprecated since jsdk2.1
1.5 bmahe 54: */
1.1 bmahe 55: public HttpSessionContext getSessionContext() {
56: return sc;
57: }
58:
1.5 bmahe 59: /**
60: * Returns the time at which this session representation was created,
61: * in milliseconds since midnight, January 1, 1970 UTC.
62: * @return the time when the session was created
63: * @exception IllegalStateException if an attempt is made to access
64: * session data after the session has been invalidated
65: */
1.1 bmahe 66: public long getCreationTime() {
67: return creationTime;
68: }
69:
1.5 bmahe 70: /**
71: * Returns the last time the client sent a request carrying the identifier
72: * assigned to the session. Time is expressed as milliseconds
73: * since midnight, January 1, 1970 UTC. Application level operations,
74: * such as getting or setting a value associated with the session,
75: * does not affect the access time.
76: * @return the last time the client sent a request carrying the identifier
77: * assigned to the session
78: * @exception IllegalStateException if an attempt is made to access
79: * session data after the session has been invalidated
80: */
1.1 bmahe 81: public long getLastAccessedTime() {
82: return lastAccessedTime;
83: }
84:
1.5 bmahe 85: protected void setLastAccessedTime() {
1.1 bmahe 86: lastAccessedTime = System.currentTimeMillis();
87: }
88:
1.5 bmahe 89: /**
90: * Causes this representation of the session to be invalidated and removed
91: * from its context.
92: * @exception IllegalStateException if an attempt is made to access
93: * session data after the session has been invalidated
94: */
1.1 bmahe 95: public void invalidate() {
96: isValid = false;
1.3 bmahe 97: sc.removeSession(id);
1.1 bmahe 98: }
99:
1.5 bmahe 100: /**
101: * Returns the object bound to the given name in the session's application
102: * layer data. Returns null if there is no such binding.
103: * @param name - the name of the binding to find
104: * @return the value bound to that name, or null if the binding does
105: * not exist.
106: * @exception IllegalStateException if an attempt is made to access
107: * session data after the session has been invalidated
108: */
1.1 bmahe 109: public Object getValue(String name) {
110: if (!isValid)
111: throw new IllegalStateException("Invalid session");
112: return values.get(name);
113: }
114:
1.5 bmahe 115: /**
116: * Binds the specified object into the session's application layer data
117: * with the given name. Any existing binding with the same name
118: * is replaced. New (or existing) values that implement the
119: * HttpSessionBindingListener interface will call its valueBound() method.
120: * @param name - the name to which the data object will be bound.
121: * This parameter cannot be null.
122: * @param value - the data object to be bound. This parameter cannot
123: * be null.
124: * @exception IllegalStateException if an attempt is made to access
125: * session data after the session has been invalidated
126: */
1.1 bmahe 127: public void putValue(String name, Object value)
128: {
129: if (!isValid)
130: throw new IllegalStateException("Invalid session");
131: removeValue(name);
132: values.put(name, value);
133: if (value instanceof HttpSessionBindingListener)
134: valueBound((HttpSessionBindingListener)value, name);
135: }
136:
1.5 bmahe 137: /**
138: * Removes the object bound to the given name in the session's application
139: * layer data. Does nothing if there is no object bound to the
140: * given name. The value that implements the HttpSessionBindingListener
141: * interface will call its valueUnbound() method.
142: * @param name - the name of the object to remove
143: * @exception IllegalStateException if an attempt is made to access
144: * session data after the session has been invalidated
145: */
1.1 bmahe 146: public void removeValue(String name) {
147: if (!isValid)
148: throw new IllegalStateException("Invalid session");
149: Object value = values.get(name);
150: if (value != null) {
151: values.remove(name);
152: if (value instanceof HttpSessionBindingListener)
153: valueUnbound((HttpSessionBindingListener)value, name);
154: }
155: }
156:
157: protected void valueBound(HttpSessionBindingListener value, String name)
158: {
159: value.valueBound(new HttpSessionBindingEvent(this, name));
160: }
161:
162: protected void valueUnbound(HttpSessionBindingListener value, String name)
163: {
164: value.valueUnbound(new HttpSessionBindingEvent(this, name));
165: }
166:
1.5 bmahe 167: /**
168: * Returns an array of the names of all the application layer data objects
169: * bound into the session. For example, if you want to delete
170: * all of the data objects bound into the session, use this method to
171: * obtain their names.
172: * @return an array containing the names of all of the application layer
173: * data objects bound into the session
174: * @exception IllegalStateException if an attempt is made to access
175: * session data after the session has been invalidated
176: */
1.1 bmahe 177: public String[] getValueNames() {
178: if (!isValid)
179: throw new IllegalStateException("Invalid session");
180: String names[] = new String[values.size()];
181: Enumeration enum = values.keys();
182: int i = 0;
183: while (enum.hasMoreElements())
184: names[i++] = (String)enum.nextElement();
185: return names;
186: }
187:
1.5 bmahe 188: /**
189: * A session is considered to be "new" if it has been created by the
190: * server, but the client has not yet acknowledged joining the
191: * session. For example, if the server supported only cookie-based
192: * sessions and the client had completely disabled the use of
193: * cookies, then calls to HttpServletRequest.getSession() would always
194: * return "new" sessions.
195: * @return true if the session has been created by the server but the
196: * client has not yet acknowledged joining the session; false otherwise
197: * @exception IllegalStateException if an attempt is made to access
198: * session data after the session has been invalidated
199: */
1.1 bmahe 200: public boolean isNew() {
201: return isNew;
1.2 bmahe 202: }
203:
1.4 bmahe 204: protected void setNoMoreNew() {
1.2 bmahe 205: isNew = false;
1.1 bmahe 206: }
207:
1.5 bmahe 208: protected boolean isValid() {
1.1 bmahe 209: return isValid;
210: }
211:
1.5 bmahe 212: protected Cookie getCookie() {
1.1 bmahe 213: return cookie;
1.6 ! bmahe 214: }
! 215:
! 216: //jsdk2.1
! 217:
! 218: public void setMaxInactiveInterval(int interval) {
! 219: maxidle = interval;
! 220: }
! 221:
! 222: public int getMaxInactiveInterval() {
! 223: return maxidle;
1.1 bmahe 224: }
225:
226: public JigsawHttpSession(JigsawHttpSessionContext context, Cookie cookie) {
227: this.values = new Hashtable();
228: this.creationTime = System.currentTimeMillis();
229: this.lastAccessedTime = creationTime;
230: this.sc = context;
231: this.id = context.addSession(this);
232: this.cookie = cookie;
233: cookie.setValue(this.id);
234: isValid = true;
235: isNew = true;
236: }
237:
238: }
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