01: /*
02: * JBoss, Home of Professional Open Source
03: * Copyright 2005, JBoss Inc., and individual contributors as indicated
04: * by the @authors tag. See the copyright.txt in the distribution for a
05: * full listing of individual contributors.
06: *
07: * This is free software; you can redistribute it and/or modify it
08: * under the terms of the GNU Lesser General Public License as
09: * published by the Free Software Foundation; either version 2.1 of
10: * the License, or (at your option) any later version.
11: *
12: * This software is distributed in the hope that it will be useful,
13: * but WITHOUT ANY WARRANTY; without even the implied warranty of
14: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15: * Lesser General Public License for more details.
16: *
17: * You should have received a copy of the GNU Lesser General Public
18: * License along with this software; if not, write to the Free
19: * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
20: * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
21: */
22: package org.jbpm.util;
23:
24: public abstract class EqualsUtil {
25:
26: public static boolean equals(Object this Object, Object otherObject) {
27: if ((this Object == null) || (otherObject == null))
28: return false;
29:
30: if (isProxy(otherObject)) {
31: return otherObject.equals(this Object);
32: } else {
33: return otherObject == this Object;
34: }
35: }
36:
37: static boolean isInitialized = false;
38: static boolean isHibernateInClasspth = true;
39: static Class hibernateProxyClass = null;
40:
41: static boolean isProxy(Object otherObject) {
42: boolean isProxy = false;
43: if (!isInitialized)
44: initializeHibernateProxyClass();
45:
46: if (isHibernateInClasspth) {
47: return hibernateProxyClass.isAssignableFrom(otherObject
48: .getClass());
49: }
50: return isProxy;
51: }
52:
53: static synchronized void initializeHibernateProxyClass() {
54: try {
55: hibernateProxyClass = ClassLoaderUtil.getClassLoader()
56: .loadClass("org.hibernate.proxy.HibernateProxy");
57: } catch (ClassNotFoundException e) {
58: isHibernateInClasspth = false;
59: }
60: isInitialized = true;
61: }
62: }
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