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Java > Open Source Codes > com > caucho > config > SetterAttributeStrategy


1 /*
2  * Copyright (c) 1998-2006 Caucho Technology -- all rights reserved
3  *
4  * This file is part of Resin(R) Open Source
5  *
6  * Each copy or derived work must preserve the copyright notice and this
7  * notice unmodified.
8  *
9  * 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.config;
30
31 import com.caucho.log.Log;
32 import com.caucho.util.L10N;
33 import com.caucho.xml.QName;
34
35 import org.w3c.dom.Node JavaDoc;
36
37 import java.lang.reflect.Method JavaDoc;
38 import java.lang.reflect.Modifier JavaDoc;
39 import java.util.logging.Level JavaDoc;
40 import java.util.logging.Logger JavaDoc;
41
42 /**
43  * Attribute strategy for a setXXX or addXXX method.
44  */
45 public class SetterAttributeStrategy extends AttributeStrategy {
46   private static final Logger JavaDoc log = Log.open(SetterAttributeStrategy.class);
47   private static final L10N L = new L10N(SetterAttributeStrategy.class);
48
49   private final Method JavaDoc _setter;
50   private final TypeStrategy _typeStrategy;
51
52   public SetterAttributeStrategy(Method JavaDoc setter)
53          throws Exception JavaDoc
54   {
55     if (! Modifier.isPublic(setter.getModifiers()))
56       throw new IllegalStateException JavaDoc(L.l("'{0}' is not public.", setter.toString()));
57
58     Class JavaDoc []param = setter.getParameterTypes();
59     _setter = setter;
60     _typeStrategy = TypeStrategyFactory.getTypeStrategy(param[0]);
61   }
62
63   /**
64    * Configures the primitive value.
65    *
66    * @param builder the owning node builder
67    * @param bean the bean to be configured
68    * @param name the attribute name
69    * @param node the configuration node
70    */
71   public void configure(NodeBuilder builder,
72                         Object JavaDoc bean,
73                         QName name,
74                         Node JavaDoc node)
75     throws Exception JavaDoc
76   {
77     Object JavaDoc value = _typeStrategy.configure(builder, node, bean);
78
79     setAttribute(bean, name, value);
80   }
81
82   /**
83    * Sets the named attribute value.
84    *
85    * @param bean the owning bean
86    * @param name the attribute name
87    * @param value the attribute value
88    * @throws Exception
89    */
90   public void setAttribute(Object JavaDoc bean, QName name, Object JavaDoc value)
91          throws Exception JavaDoc
92   {
93     try {
94       _setter.invoke(bean, value);
95     } catch (IllegalArgumentException JavaDoc e) {
96       log.log(Level.FINE, e.toString(), e);
97
98       throw new ConfigException(L.l("Can't assign {0} ({1}) to a {2}.",
99                     value, value.getClass(), _setter.getParameterTypes()[0]));
100     }
101   }
102 }
103
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