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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.dynabeans;
17  
18  import java.util.Locale;
19  
20  import org.apache.commons.beanutils.DynaBean;
21  import org.apache.commons.jxpath.ri.QName;
22  import org.apache.commons.jxpath.ri.model.NodePointer;
23  import org.apache.commons.jxpath.ri.model.beans.PropertyOwnerPointer;
24  import org.apache.commons.jxpath.ri.model.beans.PropertyPointer;
25  
26  
27  /***
28   * A Pointer that points to a DynaBean.
29   *
30   * @author Dmitri Plotnikov
31   * @version $Revision: 1.6 $ $Date: 2004/02/29 14:17:40 $
32   */
33  public class DynaBeanPointer extends PropertyOwnerPointer {
34      private QName name;
35      private DynaBean dynaBean;
36  
37      public DynaBeanPointer(QName name, DynaBean dynaBean, Locale locale) {
38          super(null, locale);
39          this.name = name;
40          this.dynaBean = dynaBean;
41      }
42  
43      /***
44       * @param name is the name given to the first node
45       */
46      public DynaBeanPointer(NodePointer parent, QName name, DynaBean dynaBean) {
47          super(parent);
48          this.name = name;
49          this.dynaBean = dynaBean;
50      }
51  
52      public PropertyPointer getPropertyPointer() {
53          return new DynaBeanPropertyPointer(this, dynaBean);
54      }
55  
56      public QName getName() {
57          return name;
58      }
59  
60      /***
61       * Returns the bean itself
62       */
63      public Object getBaseValue() {
64          return dynaBean;
65      }
66  
67      public Object getImmediateNode() {
68          return dynaBean;
69      }
70  
71      public boolean isCollection() {
72          return false;
73      }
74  
75      /***
76       * Returns 1.
77       */
78      public int getLength() {
79          return 1;
80      }
81  
82      public boolean isLeaf() {
83          return false;
84      }
85  
86      public int hashCode() {
87          return name == null ? 0 : name.hashCode();
88      }
89  
90      public boolean equals(Object object) {
91          if (object == this) {
92              return true;
93          }
94  
95          if (!(object instanceof DynaBeanPointer)) {
96              return false;
97          }
98  
99          DynaBeanPointer other = (DynaBeanPointer) object;
100         if (parent != other.parent) {
101             if (parent == null || !parent.equals(other.parent)) {
102                 return false;
103             }
104         }
105 
106         if ((name == null && other.name != null)
107             || (name != null && !name.equals(other.name))) {
108             return false;
109         }
110 
111         int iThis = (index == WHOLE_COLLECTION ? 0 : index);
112         int iOther = (other.index == WHOLE_COLLECTION ? 0 : other.index);
113         if (iThis != iOther) {
114             return false;
115         }
116 
117         return dynaBean == other.dynaBean;
118     }
119 
120     /***
121      * If there's a parent - parent's path, otherwise "/".
122      */
123     public String asPath() {
124         if (parent != null) {
125             return super.asPath();
126         }
127         return "/";
128     }
129 }