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Java > Open Source Codes > com > caucho > config > jaxb > BeanField


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  * afloat with Resin Open Source; if not, write to the
22  *
23  * Free Software Foundation, Inc.
24  * 59 Temple Place, Suite 330
25  * Boston, MA 02111-1307 USA
26  *
27  * @author Scott Ferguson
28  */
29
30 package com.caucho.config.jaxb;
31
32 import com.caucho.config.ConfigException;
33 import com.caucho.config.NodeBuilder;
34 import com.caucho.config.TypeStrategy;
35 import com.caucho.config.TypeStrategyFactory;
36 import com.caucho.xml.QName;
37
38 import org.w3c.dom.Node JavaDoc;
39
40 import java.lang.reflect.Field JavaDoc;
41 import java.lang.reflect.InvocationTargetException JavaDoc;
42
43 public class BeanField extends JaxbProperty {
44   private final Class JavaDoc _type;
45   private final Field JavaDoc _field;
46   private TypeStrategy _typeStrategy;
47   
48   public BeanField(Field JavaDoc field, Class JavaDoc type)
49   {
50     if (type == null)
51       throw new NullPointerException JavaDoc();
52     
53     _type = type;
54     _field = field;
55   }
56  
57   /**
58    * Configures the parent object with the given node.
59    *
60    * @param builder the calling node builder (context)
61    * @param bean the bean to be configured
62    * @param name the name of the property
63    * @param node the configuration node for the value
64    */
65   public void configureAttribute(NodeBuilder builder,
66                  Object JavaDoc bean,
67                  QName name,
68                  String JavaDoc value)
69     throws ConfigException
70   {
71   }
72  
73   /**
74    * Configures the parent object with the given node.
75    *
76    * @param builder the calling node builder (context)
77    * @param bean the bean to be configured
78    * @param name the name of the property
79    * @param node the configuration node for the value
80    */
81   public void configureElement(NodeBuilder builder,
82                    Object JavaDoc bean,
83                    QName name,
84                    Node JavaDoc node)
85     throws ConfigException
86   {
87     try {
88       Object JavaDoc value = _type.newInstance();
89
90       if (_typeStrategy == null)
91     _typeStrategy = TypeStrategyFactory.getTypeStrategy(_type);
92
93       _typeStrategy.configureBean(builder, value, node);
94       
95       _field.set(bean, value);
96     } catch (RuntimeException JavaDoc e) {
97       throw e;
98     } catch (InvocationTargetException JavaDoc e) {
99       throw builder.error(e.getCause(), node);
100     } catch (Exception JavaDoc e) {
101       throw builder.error(e, node);
102     }
103   }
104 }
105
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