01: /*
02: * Copyright ? 2006 Sun Microsystems, Inc. All rights reserved.
03: *
04: * Sun Microsystems, Inc. has intellectual property rights relating to
05: * technology embodied in the product that is described in this document.
06: * In particular, and without limitation, these intellectual property
07: * rights may include one or more of the U.S. patents listed at
08: * http://www.sun.com/patents and one or more additional patents or
09: * pending patent applications in the U.S. and in other countries.
10: *
11: * U.S. Government Rights - Commercial software. Government users are subject
12: * to the Sun Microsystems, Inc. standard license agreement and applicable
13: * provisions of the FAR and its supplements. Use is subject to license terms.
14: * This distribution may include materials developed by third parties.
15: * Sun, Sun Microsystems, the Sun logo and Java are trademarks or registered
16: * trademarks of Sun Microsystems, Inc. in the U.S. and other countries.
17: */
18: package com.sun.portal.app.blog.env;
19:
20: import java.util.Locale;
21: import java.util.TimeZone;
22: import javax.servlet.ServletContextEvent;
23: import javax.servlet.ServletContextListener;
24:
25: /**
26: * Abstract base class for users.
27: *
28: * Implementations of this class define the concept of a user for different
29: * runtime application runtime environments.
30: */
31: public abstract class User implements ServletContextListener {
32: private static User user = null;
33:
34: public static User getInstance() {
35: // may be null
36: return user;
37: }
38:
39: public static void setInstance(User user) {
40: User.user = user;
41: }
42:
43: public void contextInitialized(ServletContextEvent event) {
44: setInstance(this );
45: }
46:
47: public void contextDestroyed(ServletContextEvent event) {
48: //nothing
49: }
50:
51: public abstract TimeZone getTimeZone();
52:
53: public abstract Locale getLocale();
54: }
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