01: /* ====================================================================
02: The Jicarilla Software License
03:
04: Copyright (c) 2003 Leo Simons.
05: All rights reserved.
06:
07: Permission is hereby granted, free of charge, to any person obtaining
08: a copy of this software and associated documentation files (the
09: "Software"), to deal in the Software without restriction, including
10: without limitation the rights to use, copy, modify, merge, publish,
11: distribute, sublicense, and/or sell copies of the Software, and to
12: permit persons to whom the Software is furnished to do so, subject to
13: the following conditions:
14:
15: The above copyright notice and this permission notice shall be
16: included in all copies or substantial portions of the Software.
17:
18: THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
19: EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20: MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
21: IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
22: CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
23: TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
24: SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
25: ==================================================================== */
26: package org.jicarilla.container.selectors;
27:
28: import org.jicarilla.container.util.ReflectionUtil;
29: import org.jicarilla.lang.Assert;
30: import org.jicarilla.lang.CriterionExposingSelector;
31:
32: /**
33: * @author <a href="lsimons at jicarilla dot org">Leo Simons</a>
34: * @version $Id: ClassSelector.java,v 1.7 2004/03/23 13:37:52 lsimons Exp $
35: */
36: public class ClassSelector implements CriterionExposingSelector {
37: protected final Class m_class;
38:
39: public ClassSelector(final Class clazz) {
40: Assert.assertNotNull("clazz argument may not be null", clazz);
41: m_class = clazz;
42: }
43:
44: public boolean select(final Object object) {
45: if (object == null)
46: return false;
47:
48: if (object instanceof Class) {
49: final Class clazz = (Class) object;
50: return clazz.isAssignableFrom(m_class);
51: }
52:
53: if (object instanceof String) {
54: try {
55: final Class clazz = ReflectionUtil
56: .loadClass((String) object);
57: return clazz.isAssignableFrom(m_class);
58: } catch (ClassNotFoundException e) {
59: return String.class.isAssignableFrom(m_class);
60: }
61: }
62:
63: return false;
64: }
65:
66: public Object getCriterion() {
67: return m_class;
68: }
69:
70: public boolean equals(final Object o) {
71: if (o == this )
72: return true;
73:
74: if (!(o instanceof ClassSelector))
75: return false;
76:
77: return getCriterion()
78: .equals(((ClassSelector) o).getCriterion());
79: }
80:
81: public int hashCode() {
82: return getCriterion().hashCode() + 50;
83: }
84: }
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