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Java > Open Source Codes > org > apache > commons > jxpath > ri > model > beans > BeanAttributeIterator


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.beans;
17
18 import org.apache.commons.jxpath.ri.QName;
19 import org.apache.commons.jxpath.ri.model.NodePointer;
20
21 /**
22  * An iterator of attributes of a JavaBean. Returns bean properties as
23  * well as the "xml:lang" attribute.
24  *
25  * @author Dmitri Plotnikov
26  * @version $Revision: 1.8 $ $Date: 2004/02/29 14:17:41 $
27  */
28 public class BeanAttributeIterator extends PropertyIterator {
29     private NodePointer parent;
30     private int position = 0;
31     private boolean includeXmlLang;
32
33     public BeanAttributeIterator(PropertyOwnerPointer parent, QName name) {
34         super(
35             parent,
36             (name.getPrefix() == null
37                 && (name.getName() == null || name.getName().equals("*")))
38                 ? null
39                 : name.toString(),
40             false,
41             null);
42         this.parent = parent;
43         includeXmlLang =
44             (name.getPrefix() != null && name.getPrefix().equals("xml"))
45                 && (name.getName().equals("lang")
46                 || name.getName().equals("*"));
47     }
48
49     public NodePointer getNodePointer() {
50         if (includeXmlLang && position == 1) {
51             return new LangAttributePointer(parent);
52         }
53         else {
54             return super.getNodePointer();
55         }
56     }
57
58     public int getPosition() {
59         return position;
60     }
61
62     public boolean setPosition(int position) {
63         this.position = position;
64         if (includeXmlLang) {
65             if (position == 1) {
66                 return true;
67             }
68             else {
69                 return super.setPosition(position - 1);
70             }
71         }
72         else {
73             this.position = position;
74             return super.setPosition(position);
75         }
76     }
77 }
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