NamedNodeMapImpl


1   /*
2    * @(#)HashMapNode.java 1.36 02/03/21
3    *
4    * Copyright 2002 Sun Microsystems, Inc. All rights reserved.
5    * SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
6    */
7   package org.enhydra.xml;
8   
9   import java.util.Iterator  ;
10  import java.util.List  ;
11  
12  import org.w3c.dom.DOMException  ;
13  import org.w3c.dom.NamedNodeMap  ;
14  import org.w3c.dom.Node  ;
15  
16  
17  /**
18   * A class representing a node in a meta-data tree, which implements
19   * the <a HREF="../../../../api/org/w3c/dom/NamedNodeMap.html">
20   *
21   * @version 1.0
22   */
23  class NamedNodeMapImpl implements NamedNodeMap   {
24  
25      /**
26       * List of <code>Node</code>s.
27       */
28      List   nodes;
29  
30  
31      /**
32       * Constructs new <code>NamedNodeMapImpl</code> with the given list of nodes.
33       * 
34       * @param nodes list of nodes.
35       */
36      public NamedNodeMapImpl(List   nodes) {
37          this.nodes = nodes;
38      }
39  
40      /**
41       * Returns the count of nodes.
42       * 
43       * @return the count of nodes.
44       */
45      public int getLength() {
46          return nodes.size();
47      }
48  
49  
50      /**
51       * Returns the <code>Node</code> with the given name.
52       * 
53       * @param name the node name.
54       * 
55       * @return the <code>Node</code> with the given name.
56       */
57      public Node   getNamedItem(String   name) {
58          Iterator   iter = nodes.iterator();
59          while (iter.hasNext()) {
60              Node   node = (Node  )iter.next();
61              if (name.equals(node.getNodeName())) {
62                  return node;
63              }
64          }
65  
66          return null;
67      }
68  
69      /**
70       * Returns the <code>Node</code> with the given index.
71       * 
72       * @param index index of a node.
73       * @return the <code>Node</code> with the given index.
74       */
75      public Node   item(int index) {
76          Node   node = (Node  ) nodes.get(index);
77          return node;
78      }
79  
80  
81      /**
82       * Modification of the items is not allowed !
83       * Removes the item with the given name.
84       * 
85       * @param name item name.
86       * @return the <code>Node</code> with the given name.
87       */
88      public Node   removeNamedItem(java.lang.String   name) {
89          throw new DOMException  (DOMException.NO_MODIFICATION_ALLOWED_ERR, "This NamedNodeMap is read-only!");
90      }
91  
92  
93      /**
94       * Modification of the items is not allowed !
95       * Sets the item with the given name.
96       * 
97       * @param arg <code>Node</code>.
98       * @return Sets the item with the given name.
99       */
100     public Node   setNamedItem(Node   arg) {
101         throw new DOMException  (DOMException.NO_MODIFICATION_ALLOWED_ERR, "This NamedNodeMap is read-only!");
102     }
103 
104 
105     /**
106      * Equivalent to <code>getNamedItem(localName)</code>.
107      */
108     public Node   getNamedItemNS(String   namespaceURI, String   localName) {
109         return getNamedItem(localName);
110     }
111 
112 
113     /**
114      * Equivalent to <code>setNamedItem(arg)</code>.
115      */
116     public Node   setNamedItemNS(Node   arg) {
117         return setNamedItem(arg);
118     }
119 
120 
121     /**
122      * Equivalent to <code>removeNamedItem(localName)</code>.
123      */
124     public Node   removeNamedItemNS(String   namespaceURI, String   localName) {
125         return removeNamedItem(localName);
126     }
127     
128 }
129
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