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 SoftwareFoundation, Inc.
23: * 59 Temple Place, Suite 330
24: * Boston, MA 02111-1307 USA
25: *
26: * @author Scott Ferguson
27: */
28:
29: package com.caucho.ejb.entity;
30:
31: /**
32: * Key to handle the merged identity hash code.
33: */
34: public class EntityKey {
35: private EntityServer _server;
36: private Object _primaryKey;
37:
38: public EntityKey() {
39: }
40:
41: public EntityKey(EntityServer server, Object key) {
42: _server = server;
43: _primaryKey = key;
44: }
45:
46: public void init(EntityServer server, Object key) {
47: _server = server;
48: _primaryKey = key;
49: }
50:
51: /**
52: * Returns the hash.
53: */
54: public int hashCode() {
55: return 65521 * System.identityHashCode(_server)
56: + _primaryKey.hashCode();
57: }
58:
59: /**
60: * Returns equality.
61: */
62: public boolean equals(Object o) {
63: if (this == o)
64: return true;
65:
66: if (o == null || getClass() != o.getClass())
67: return false;
68:
69: EntityKey key = (EntityKey) o;
70:
71: return _server == key._server
72: && _primaryKey.equals(key._primaryKey);
73: }
74:
75: public String toString() {
76: return "EntityKey[]";
77: }
78: }
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