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Java > Open Source Codes > org > apache > commons > jxpath > ri > model > dynamic > DynamicPointerFactory


1 /*
2  * Copyright 1999-2004 The Apache Software Foundation
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  * http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 package org.apache.commons.jxpath.ri.model.dynamic;
17
18 import java.util.Locale JavaDoc;
19
20 import org.apache.commons.jxpath.DynamicPropertyHandler;
21 import org.apache.commons.jxpath.JXPathBeanInfo;
22 import org.apache.commons.jxpath.JXPathIntrospector;
23 import org.apache.commons.jxpath.ri.QName;
24 import org.apache.commons.jxpath.ri.model.NodePointer;
25 import org.apache.commons.jxpath.ri.model.NodePointerFactory;
26 import org.apache.commons.jxpath.ri.model.beans.NullPointer;
27 import org.apache.commons.jxpath.util.ValueUtils;
28
29 /**
30  * Implements NodePointerFactory for Dynamic classes like Map.
31  *
32  * @author Dmitri Plotnikov
33  * @version $Revision: 1.5 $ $Date: 2004/02/29 14:17:44 $
34  */
35 public class DynamicPointerFactory implements NodePointerFactory {
36
37     public static final int DYNAMIC_POINTER_FACTORY_ORDER = 800;
38
39     public int getOrder() {
40         return DYNAMIC_POINTER_FACTORY_ORDER;
41     }
42
43     public NodePointer createNodePointer(
44         QName name,
45         Object JavaDoc bean,
46         Locale JavaDoc locale)
47     {
48         JXPathBeanInfo bi = JXPathIntrospector.getBeanInfo(bean.getClass());
49         if (bi.isDynamic()) {
50             DynamicPropertyHandler handler =
51                 ValueUtils.getDynamicPropertyHandler(
52                     bi.getDynamicPropertyHandlerClass());
53             return new DynamicPointer(name, bean, handler, locale);
54         }
55         return null;
56     }
57
58     public NodePointer createNodePointer(
59         NodePointer parent,
60         QName name,
61         Object JavaDoc bean)
62     {
63         if (bean == null) {
64             return new NullPointer(parent, name);
65         }
66
67         JXPathBeanInfo bi = JXPathIntrospector.getBeanInfo(bean.getClass());
68         if (bi.isDynamic()) {
69             DynamicPropertyHandler handler =
70                 ValueUtils.getDynamicPropertyHandler(
71                     bi.getDynamicPropertyHandlerClass());
72             return new DynamicPointer(parent, name, bean, handler);
73         }
74         return null;
75     }
76 }
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