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.entity;
30:
31: import com.caucho.amber.query.ResultSetCacheChunk;
32: import com.caucho.amber.type.EntityType;
33: import com.caucho.util.L10N;
34: import com.caucho.util.Log;
35:
36: import java.util.logging.Logger;
37:
38: /**
39: * Code to update the cache value on the completion of a transaction.
40: */
41: public class TableInvalidateCompletion implements AmberCompletion {
42: private static final L10N L = new L10N(
43: TableInvalidateCompletion.class);
44: private static final Logger log = Log
45: .open(TableInvalidateCompletion.class);
46:
47: private String _table;
48:
49: public TableInvalidateCompletion(String table) {
50: if (table == null)
51: throw new NullPointerException();
52:
53: _table = table;
54: }
55:
56: /**
57: * Code when the transaction completes.
58: *
59: * @return true if the entry should be deleted.
60: */
61: public boolean complete(EntityType rootType, Object key,
62: EntityItem entityItem) {
63: if (rootType.getTable().getName().equals(_table)) {
64: // jpa/0k20
65: entityItem.expire();
66: } else {
67: entityItem.getEntity().__caucho_invalidate_foreign(_table,
68: null);
69: }
70:
71: return false;
72: }
73:
74: /**
75: * Code to invalidate the query.
76: *
77: * @return true if the entry should be deleted.
78: */
79: public boolean complete(ResultSetCacheChunk chunk) {
80: return chunk.invalidate(_table, null);
81: }
82:
83: /**
84: * Returns true for equality.
85: */
86: public boolean equals(Object o) {
87: if (this == o)
88: return true;
89: else if (o == null || o.getClass() != getClass())
90: return false;
91:
92: TableInvalidateCompletion comp = (TableInvalidateCompletion) o;
93:
94: return _table.equals(comp._table);
95: }
96: }
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