01: /*
02: * Copyright 2005 Sun Microsystems, Inc. All rights reserved.
03: *
04: * Redistribution and use in source and binary forms, with or without
05: * modification, are permitted provided that the following conditions
06: * are met:
07: *
08: * - Redistributions of source code must retain the above copyright
09: * notice, this list of conditions and the following disclaimer.
10: *
11: * - Redistribution in binary form must reproduce the above copyright
12: * notice, this list of conditions and the following disclaimer in
13: * the documentation and/or other materials provided with the
14: * distribution.
15: *
16: * Neither the name of Sun Microsystems, Inc. or the names of
17: * contributors may be used to endorse or promote products derived
18: * from this software without specific prior written permission.
19: *
20: * This software is provided "AS IS," without a warranty of any
21: * kind. ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND
22: * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY,
23: * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY
24: * EXCLUDED. SUN AND ITS LICENSORS SHALL NOT BE LIABLE FOR ANY DAMAGES
25: * SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR
26: * DISTRIBUTING THE SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN
27: * OR ITS LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR
28: * FOR DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR
29: * PUNITIVE DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY OF
30: * LIABILITY, ARISING OUT OF THE USE OF OR INABILITY TO USE SOFTWARE,
31: * EVEN IF SUN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
32: *
33: * You acknowledge that Software is not designed, licensed or intended
34: * any nuclear facility.
35: */
36:
37: package com.sun.portal.community.notification;
38:
39: import java.util.Set;
40:
41: public abstract class NotificationManagerFactory {
42:
43: //
44: // singleton
45: //
46: protected static NotificationManagerFactory _nmfactory;
47:
48: /**
49: * Get singleton factory instance.
50: *
51: * @return
52: */
53: public static NotificationManagerFactory getInstance() {
54: if (_nmfactory == null) {
55: throw new IllegalStateException("factory unavailable");
56: }
57: return _nmfactory;
58: }
59:
60: protected static void setInstance(
61: NotificationManagerFactory nmfactory) {
62: _nmfactory = nmfactory;
63: }
64:
65: public abstract NotificationManager getNotificationManager();
66:
67: }
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