01: /*
02: * Copyright (c) 1998-2008 Caucho Technology -- all rights reserved
03: *
04: * This file is part of Resin(R) Open Source
05: *
06: * Each copy or derived work must preserve the copyright notice and this
07: * notice unmodified.
08: *
09: * Resin Open Source is free software; you can redistribute it and/or modify
10: * it under the terms of the GNU General Public License as published by
11: * the Free Software Foundation; either version 2 of the License, or
12: * (at your option) any later version.
13: *
14: * Resin Open Source is distributed in the hope that it will be useful,
15: * but WITHOUT ANY WARRANTY; without even the implied warranty of
16: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, or any warranty
17: * of NON-INFRINGEMENT. See the GNU General Public License for more
18: * details.
19: *
20: * You should have received a copy of the GNU General Public License
21: * along with Resin Open Source; if not, write to the
22: * Free Software Foundation, Inc.
23: * 59 Temple Place, Suite 330
24: * Boston, MA 02111-1307 USA
25: *
26: * @author Scott Ferguson
27: */
28:
29: package com.caucho.amber.query;
30:
31: import com.caucho.amber.entity.Entity;
32:
33: /**
34: * Callback when an entity is created, destroyed or modified.
35: */
36: abstract public class CacheUpdate {
37: private CachedQuery _query;
38:
39: protected CacheUpdate(CachedQuery query) {
40: _query = query;
41: }
42:
43: /**
44: * Called when an entity is added.
45: */
46: public void add(Entity obj) {
47: update();
48: }
49:
50: /**
51: * Called when an entity is deleted.
52: */
53: public void delete(Object key) {
54: update();
55: }
56:
57: /**
58: * Called when an entity is deleted.
59: */
60: public void update(Entity object) {
61: update();
62: }
63:
64: /**
65: * Update the query.
66: */
67: protected void update() {
68: _query.update();
69: }
70: }
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