1/*
2 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
3 *
4 * This code is free software; you can redistribute it and/or modify it
5 * under the terms of the GNU General Public License version 2 only, as
6 * published by the Free Software Foundation.  Oracle designates this
7 * particular file as subject to the "Classpath" exception as provided
8 * by Oracle in the LICENSE file that accompanied this code.
9 *
10 * This code is distributed in the hope that it will be useful, but WITHOUT
11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
13 * version 2 for more details (a copy is included in the LICENSE file that
14 * accompanied this code).
15 *
16 * You should have received a copy of the GNU General Public License version
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18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
19 *
20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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23 */
24
25/*
26 * This file is available under and governed by the GNU General Public
27 * License version 2 only, as published by the Free Software Foundation.
28 * However, the following notice accompanied the original version of this
29 * file and, per its terms, should not be removed:
30 *
31 * Copyright (c) 2004 World Wide Web Consortium,
32 *
33 * (Massachusetts Institute of Technology, European Research Consortium for
34 * Informatics and Mathematics, Keio University). All Rights Reserved. This
35 * work is distributed under the W3C(r) Software License [1] in the hope that
36 * it will be useful, but WITHOUT ANY WARRANTY; without even the implied
37 * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
38 *
39 * [1] http://www.w3.org/Consortium/Legal/2002/copyright-software-20021231
40 */
41
42package org.w3c.dom;
43
44/**
45 * The <code>Node</code> interface is the primary datatype for the entire
46 * Document Object Model. It represents a single node in the document tree.
47 * While all objects implementing the <code>Node</code> interface expose
48 * methods for dealing with children, not all objects implementing the
49 * <code>Node</code> interface may have children. For example,
50 * <code>Text</code> nodes may not have children, and adding children to
51 * such nodes results in a <code>DOMException</code> being raised.
52 * <p>The attributes <code>nodeName</code>, <code>nodeValue</code> and
53 * <code>attributes</code> are included as a mechanism to get at node
54 * information without casting down to the specific derived interface. In
55 * cases where there is no obvious mapping of these attributes for a
56 * specific <code>nodeType</code> (e.g., <code>nodeValue</code> for an
57 * <code>Element</code> or <code>attributes</code> for a <code>Comment</code>
58 * ), this returns <code>null</code>. Note that the specialized interfaces
59 * may contain additional and more convenient mechanisms to get and set the
60 * relevant information.
61 * <p>The values of <code>nodeName</code>,
62 * <code>nodeValue</code>, and <code>attributes</code> vary according to the
63 * node type as follows:
64 * <table class="striped">
65 * <caption style="display:none">Interface table</caption>
66 * <thead>
67 * <tr>
68 * <th scope="col">Interface</th>
69 * <th scope="col">nodeName</th>
70 * <th scope="col">nodeValue</th>
71 * <th scope="col">attributes</th>
72 * </tr>
73 * </thead>
74 * <tbody>
75 * <tr>
76 * <th scope="row">
77 * <code>Attr</code></th>
78 * <td>same as <code>Attr.name</code></td>
79 * <td>same as
80 * <code>Attr.value</code></td>
81 * <td><code>null</code></td>
82 * </tr>
83 * <tr>
84 * <th scope="row"><code>CDATASection</code></th>
85 * <td>
86 * <code>"#cdata-section"</code></td>
87 * <td>same as <code>CharacterData.data</code>, the
88 * content of the CDATA Section</td>
89 * <td><code>null</code></td>
90 * </tr>
91 * <tr>
92 * <th scope="row"><code>Comment</code></th>
93 * <td>
94 * <code>"#comment"</code></td>
95 * <td>same as <code>CharacterData.data</code>, the
96 * content of the comment</td>
97 * <td><code>null</code></td>
98 * </tr>
99 * <tr>
100 * <th scope="row"><code>Document</code></th>
101 * <td>
102 * <code>"#document"</code></td>
103 * <td><code>null</code></td>
104 * <td><code>null</code></td>
105 * </tr>
106 * <tr>
107 * <th scope="row">
108 * <code>DocumentFragment</code></th>
109 * <td><code>"#document-fragment"</code></td>
110 * <td>
111 * <code>null</code></td>
112 * <td><code>null</code></td>
113 * </tr>
114 * <tr>
115 * <th scope="row"><code>DocumentType</code></th>
116 * <td>same as
117 * <code>DocumentType.name</code></td>
118 * <td><code>null</code></td>
119 * <td><code>null</code></td>
120 * </tr>
121 * <tr>
122 * <th scope="row">
123 * <code>Element</code></th>
124 * <td>same as <code>Element.tagName</code></td>
125 * <td><code>null</code></td>
126 * <td>
127 * <code>NamedNodeMap</code></td>
128 * </tr>
129 * <tr>
130 * <th scope="row"><code>Entity</code></th>
131 * <td>entity name</td>
132 * <td><code>null</code></td>
133 * <td>
134 * <code>null</code></td>
135 * </tr>
136 * <tr>
137 * <th scope="row"><code>EntityReference</code></th>
138 * <td>name of entity referenced</td>
139 * <td>
140 * <code>null</code></td>
141 * <td><code>null</code></td>
142 * </tr>
143 * <tr>
144 * <th scope="row"><code>Notation</code></th>
145 * <td>notation name</td>
146 * <td>
147 * <code>null</code></td>
148 * <td><code>null</code></td>
149 * </tr>
150 * <tr>
151 * <th scope="row"><code>ProcessingInstruction</code></th>
152 * <td>same
153 * as <code>ProcessingInstruction.target</code></td>
154 * <td>same as
155 * <code>ProcessingInstruction.data</code></td>
156 * <td><code>null</code></td>
157 * </tr>
158 * <tr>
159 * <th scope="row"><code>Text</code></th>
160 * <td>
161 * <code>"#text"</code></td>
162 * <td>same as <code>CharacterData.data</code>, the content
163 * of the text node</td>
164 * <td><code>null</code></td>
165 * </tr>
166 * </tbody>
167 * </table>
168 * <p>See also the <a href='http://www.w3.org/TR/2004/REC-DOM-Level-3-Core-20040407'>Document Object Model (DOM) Level 3 Core Specification</a>.
169 */
170public interface Node {
171    // NodeType
172    /**
173     * The node is an <code>Element</code>.
174     */
175    public static final short ELEMENT_NODE              = 1;
176    /**
177     * The node is an <code>Attr</code>.
178     */
179    public static final short ATTRIBUTE_NODE            = 2;
180    /**
181     * The node is a <code>Text</code> node.
182     */
183    public static final short TEXT_NODE                 = 3;
184    /**
185     * The node is a <code>CDATASection</code>.
186     */
187    public static final short CDATA_SECTION_NODE        = 4;
188    /**
189     * The node is an <code>EntityReference</code>.
190     */
191    public static final short ENTITY_REFERENCE_NODE     = 5;
192    /**
193     * The node is an <code>Entity</code>.
194     */
195    public static final short ENTITY_NODE               = 6;
196    /**
197     * The node is a <code>ProcessingInstruction</code>.
198     */
199    public static final short PROCESSING_INSTRUCTION_NODE = 7;
200    /**
201     * The node is a <code>Comment</code>.
202     */
203    public static final short COMMENT_NODE              = 8;
204    /**
205     * The node is a <code>Document</code>.
206     */
207    public static final short DOCUMENT_NODE             = 9;
208    /**
209     * The node is a <code>DocumentType</code>.
210     */
211    public static final short DOCUMENT_TYPE_NODE        = 10;
212    /**
213     * The node is a <code>DocumentFragment</code>.
214     */
215    public static final short DOCUMENT_FRAGMENT_NODE    = 11;
216    /**
217     * The node is a <code>Notation</code>.
218     */
219    public static final short NOTATION_NODE             = 12;
220
221    /**
222     * The name of this node, depending on its type; see the table above.
223     */
224    public String getNodeName();
225
226    /**
227     * The value of this node, depending on its type; see the table above.
228     * When it is defined to be <code>null</code>, setting it has no effect,
229     * including if the node is read-only.
230     * @exception DOMException
231     *   DOMSTRING_SIZE_ERR: Raised when it would return more characters than
232     *   fit in a <code>DOMString</code> variable on the implementation
233     *   platform.
234     */
235    public String getNodeValue()
236                              throws DOMException;
237    /**
238     * The value of this node, depending on its type; see the table above.
239     * When it is defined to be <code>null</code>, setting it has no effect,
240     * including if the node is read-only.
241     * @exception DOMException
242     *   NO_MODIFICATION_ALLOWED_ERR: Raised when the node is readonly and if
243     *   it is not defined to be <code>null</code>.
244     */
245    public void setNodeValue(String nodeValue)
246                              throws DOMException;
247
248    /**
249     * A code representing the type of the underlying object, as defined above.
250     */
251    public short getNodeType();
252
253    /**
254     * The parent of this node. All nodes, except <code>Attr</code>,
255     * <code>Document</code>, <code>DocumentFragment</code>,
256     * <code>Entity</code>, and <code>Notation</code> may have a parent.
257     * However, if a node has just been created and not yet added to the
258     * tree, or if it has been removed from the tree, this is
259     * <code>null</code>.
260     */
261    public Node getParentNode();
262
263    /**
264     * A <code>NodeList</code> that contains all children of this node. If
265     * there are no children, this is a <code>NodeList</code> containing no
266     * nodes.
267     */
268    public NodeList getChildNodes();
269
270    /**
271     * The first child of this node. If there is no such node, this returns
272     * <code>null</code>.
273     */
274    public Node getFirstChild();
275
276    /**
277     * The last child of this node. If there is no such node, this returns
278     * <code>null</code>.
279     */
280    public Node getLastChild();
281
282    /**
283     * The node immediately preceding this node. If there is no such node,
284     * this returns <code>null</code>.
285     */
286    public Node getPreviousSibling();
287
288    /**
289     * The node immediately following this node. If there is no such node,
290     * this returns <code>null</code>.
291     */
292    public Node getNextSibling();
293
294    /**
295     * A <code>NamedNodeMap</code> containing the attributes of this node (if
296     * it is an <code>Element</code>) or <code>null</code> otherwise.
297     */
298    public NamedNodeMap getAttributes();
299
300    /**
301     * The <code>Document</code> object associated with this node. This is
302     * also the <code>Document</code> object used to create new nodes. When
303     * this node is a <code>Document</code> or a <code>DocumentType</code>
304     * which is not used with any <code>Document</code> yet, this is
305     * <code>null</code>.
306     *
307     * @since 1.4, DOM Level 2
308     */
309    public Document getOwnerDocument();
310
311    /**
312     * Inserts the node <code>newChild</code> before the existing child node
313     * <code>refChild</code>. If <code>refChild</code> is <code>null</code>,
314     * insert <code>newChild</code> at the end of the list of children.
315     * <br>If <code>newChild</code> is a <code>DocumentFragment</code> object,
316     * all of its children are inserted, in the same order, before
317     * <code>refChild</code>. If the <code>newChild</code> is already in the
318     * tree, it is first removed.
319     * <p ><b>Note:</b>  Inserting a node before itself is implementation
320     * dependent.
321     * @param newChild The node to insert.
322     * @param refChild The reference node, i.e., the node before which the
323     *   new node must be inserted.
324     * @return The node being inserted.
325     * @exception DOMException
326     *   HIERARCHY_REQUEST_ERR: Raised if this node is of a type that does not
327     *   allow children of the type of the <code>newChild</code> node, or if
328     *   the node to insert is one of this node's ancestors or this node
329     *   itself, or if this node is of type <code>Document</code> and the
330     *   DOM application attempts to insert a second
331     *   <code>DocumentType</code> or <code>Element</code> node.
332     *   <br>WRONG_DOCUMENT_ERR: Raised if <code>newChild</code> was created
333     *   from a different document than the one that created this node.
334     *   <br>NO_MODIFICATION_ALLOWED_ERR: Raised if this node is readonly or
335     *   if the parent of the node being inserted is readonly.
336     *   <br>NOT_FOUND_ERR: Raised if <code>refChild</code> is not a child of
337     *   this node.
338     *   <br>NOT_SUPPORTED_ERR: if this node is of type <code>Document</code>,
339     *   this exception might be raised if the DOM implementation doesn't
340     *   support the insertion of a <code>DocumentType</code> or
341     *   <code>Element</code> node.
342     *
343     * @since 1.4, DOM Level 3
344     */
345    public Node insertBefore(Node newChild,
346                             Node refChild)
347                             throws DOMException;
348
349    /**
350     * Replaces the child node <code>oldChild</code> with <code>newChild</code>
351     *  in the list of children, and returns the <code>oldChild</code> node.
352     * <br>If <code>newChild</code> is a <code>DocumentFragment</code> object,
353     * <code>oldChild</code> is replaced by all of the
354     * <code>DocumentFragment</code> children, which are inserted in the
355     * same order. If the <code>newChild</code> is already in the tree, it
356     * is first removed.
357     * <p ><b>Note:</b>  Replacing a node with itself is implementation
358     * dependent.
359     * @param newChild The new node to put in the child list.
360     * @param oldChild The node being replaced in the list.
361     * @return The node replaced.
362     * @exception DOMException
363     *   HIERARCHY_REQUEST_ERR: Raised if this node is of a type that does not
364     *   allow children of the type of the <code>newChild</code> node, or if
365     *   the node to put in is one of this node's ancestors or this node
366     *   itself, or if this node is of type <code>Document</code> and the
367     *   result of the replacement operation would add a second
368     *   <code>DocumentType</code> or <code>Element</code> on the
369     *   <code>Document</code> node.
370     *   <br>WRONG_DOCUMENT_ERR: Raised if <code>newChild</code> was created
371     *   from a different document than the one that created this node.
372     *   <br>NO_MODIFICATION_ALLOWED_ERR: Raised if this node or the parent of
373     *   the new node is readonly.
374     *   <br>NOT_FOUND_ERR: Raised if <code>oldChild</code> is not a child of
375     *   this node.
376     *   <br>NOT_SUPPORTED_ERR: if this node is of type <code>Document</code>,
377     *   this exception might be raised if the DOM implementation doesn't
378     *   support the replacement of the <code>DocumentType</code> child or
379     *   <code>Element</code> child.
380     *
381     * @since 1.4, DOM Level 3
382     */
383    public Node replaceChild(Node newChild,
384                             Node oldChild)
385                             throws DOMException;
386
387    /**
388     * Removes the child node indicated by <code>oldChild</code> from the list
389     * of children, and returns it.
390     * @param oldChild The node being removed.
391     * @return The node removed.
392     * @exception DOMException
393     *   NO_MODIFICATION_ALLOWED_ERR: Raised if this node is readonly.
394     *   <br>NOT_FOUND_ERR: Raised if <code>oldChild</code> is not a child of
395     *   this node.
396     *   <br>NOT_SUPPORTED_ERR: if this node is of type <code>Document</code>,
397     *   this exception might be raised if the DOM implementation doesn't
398     *   support the removal of the <code>DocumentType</code> child or the
399     *   <code>Element</code> child.
400     *
401     * @since 1.4, DOM Level 3
402     */
403    public Node removeChild(Node oldChild)
404                            throws DOMException;
405
406    /**
407     * Adds the node <code>newChild</code> to the end of the list of children
408     * of this node. If the <code>newChild</code> is already in the tree, it
409     * is first removed.
410     * @param newChild The node to add.If it is a
411     *   <code>DocumentFragment</code> object, the entire contents of the
412     *   document fragment are moved into the child list of this node
413     * @return The node added.
414     * @exception DOMException
415     *   HIERARCHY_REQUEST_ERR: Raised if this node is of a type that does not
416     *   allow children of the type of the <code>newChild</code> node, or if
417     *   the node to append is one of this node's ancestors or this node
418     *   itself, or if this node is of type <code>Document</code> and the
419     *   DOM application attempts to append a second
420     *   <code>DocumentType</code> or <code>Element</code> node.
421     *   <br>WRONG_DOCUMENT_ERR: Raised if <code>newChild</code> was created
422     *   from a different document than the one that created this node.
423     *   <br>NO_MODIFICATION_ALLOWED_ERR: Raised if this node is readonly or
424     *   if the previous parent of the node being inserted is readonly.
425     *   <br>NOT_SUPPORTED_ERR: if the <code>newChild</code> node is a child
426     *   of the <code>Document</code> node, this exception might be raised
427     *   if the DOM implementation doesn't support the removal of the
428     *   <code>DocumentType</code> child or <code>Element</code> child.
429     *
430     * @since 1.4, DOM Level 3
431     */
432    public Node appendChild(Node newChild)
433                            throws DOMException;
434
435    /**
436     * Returns whether this node has any children.
437     * @return Returns <code>true</code> if this node has any children,
438     *   <code>false</code> otherwise.
439     */
440    public boolean hasChildNodes();
441
442    /**
443     * Returns a duplicate of this node, i.e., serves as a generic copy
444     * constructor for nodes. The duplicate node has no parent (
445     * <code>parentNode</code> is <code>null</code>) and no user data. User
446     * data associated to the imported node is not carried over. However, if
447     * any <code>UserDataHandlers</code> has been specified along with the
448     * associated data these handlers will be called with the appropriate
449     * parameters before this method returns.
450     * <br>Cloning an <code>Element</code> copies all attributes and their
451     * values, including those generated by the XML processor to represent
452     * defaulted attributes, but this method does not copy any children it
453     * contains unless it is a deep clone. This includes text contained in
454     * an the <code>Element</code> since the text is contained in a child
455     * <code>Text</code> node. Cloning an <code>Attr</code> directly, as
456     * opposed to be cloned as part of an <code>Element</code> cloning
457     * operation, returns a specified attribute (<code>specified</code> is
458     * <code>true</code>). Cloning an <code>Attr</code> always clones its
459     * children, since they represent its value, no matter whether this is a
460     * deep clone or not. Cloning an <code>EntityReference</code>
461     * automatically constructs its subtree if a corresponding
462     * <code>Entity</code> is available, no matter whether this is a deep
463     * clone or not. Cloning any other type of node simply returns a copy of
464     * this node.
465     * <br>Note that cloning an immutable subtree results in a mutable copy,
466     * but the children of an <code>EntityReference</code> clone are readonly
467     * . In addition, clones of unspecified <code>Attr</code> nodes are
468     * specified. And, cloning <code>Document</code>,
469     * <code>DocumentType</code>, <code>Entity</code>, and
470     * <code>Notation</code> nodes is implementation dependent.
471     * @param deep If <code>true</code>, recursively clone the subtree under
472     *   the specified node; if <code>false</code>, clone only the node
473     *   itself (and its attributes, if it is an <code>Element</code>).
474     * @return The duplicate node.
475     */
476    public Node cloneNode(boolean deep);
477
478    /**
479     *  Puts all <code>Text</code> nodes in the full depth of the sub-tree
480     * underneath this <code>Node</code>, including attribute nodes, into a
481     * "normal" form where only structure (e.g., elements, comments,
482     * processing instructions, CDATA sections, and entity references)
483     * separates <code>Text</code> nodes, i.e., there are neither adjacent
484     * <code>Text</code> nodes nor empty <code>Text</code> nodes. This can
485     * be used to ensure that the DOM view of a document is the same as if
486     * it were saved and re-loaded, and is useful when operations (such as
487     * XPointer [<a href='http://www.w3.org/TR/2003/REC-xptr-framework-20030325/'>XPointer</a>]
488     *  lookups) that depend on a particular document tree structure are to
489     * be used. If the parameter "normalize-characters" of the
490     * <code>DOMConfiguration</code> object attached to the
491     * <code>Node.ownerDocument</code> is <code>true</code>, this method
492     * will also fully normalize the characters of the <code>Text</code>
493     * nodes.
494     * <p ><b>Note:</b> In cases where the document contains
495     * <code>CDATASections</code>, the normalize operation alone may not be
496     * sufficient, since XPointers do not differentiate between
497     * <code>Text</code> nodes and <code>CDATASection</code> nodes.
498     *
499     * @since 1.4, DOM Level 3
500     */
501    public void normalize();
502
503    /**
504     *  Tests whether the DOM implementation implements a specific feature and
505     * that feature is supported by this node, as specified in .
506     * @param feature  The name of the feature to test.
507     * @param version  This is the version number of the feature to test.
508     * @return Returns <code>true</code> if the specified feature is
509     *   supported on this node, <code>false</code> otherwise.
510     *
511     * @since 1.4, DOM Level 2
512     */
513    public boolean isSupported(String feature,
514                               String version);
515
516    /**
517     * The namespace URI of this node, or <code>null</code> if it is
518     * unspecified (see ).
519     * <br>This is not a computed value that is the result of a namespace
520     * lookup based on an examination of the namespace declarations in
521     * scope. It is merely the namespace URI given at creation time.
522     * <br>For nodes of any type other than <code>ELEMENT_NODE</code> and
523     * <code>ATTRIBUTE_NODE</code> and nodes created with a DOM Level 1
524     * method, such as <code>Document.createElement()</code>, this is always
525     * <code>null</code>.
526     * <p ><b>Note:</b> Per the <em>Namespaces in XML</em> Specification [<a href='http://www.w3.org/TR/1999/REC-xml-names-19990114/'>XML Namespaces</a>]
527     *  an attribute does not inherit its namespace from the element it is
528     * attached to. If an attribute is not explicitly given a namespace, it
529     * simply has no namespace.
530     *
531     * @since 1.4, DOM Level 2
532     */
533    public String getNamespaceURI();
534
535    /**
536     * The namespace prefix of this node, or <code>null</code> if it is
537     * unspecified. When it is defined to be <code>null</code>, setting it
538     * has no effect, including if the node is read-only.
539     * <br>Note that setting this attribute, when permitted, changes the
540     * <code>nodeName</code> attribute, which holds the qualified name, as
541     * well as the <code>tagName</code> and <code>name</code> attributes of
542     * the <code>Element</code> and <code>Attr</code> interfaces, when
543     * applicable.
544     * <br>Setting the prefix to <code>null</code> makes it unspecified,
545     * setting it to an empty string is implementation dependent.
546     * <br>Note also that changing the prefix of an attribute that is known to
547     * have a default value, does not make a new attribute with the default
548     * value and the original prefix appear, since the
549     * <code>namespaceURI</code> and <code>localName</code> do not change.
550     * <br>For nodes of any type other than <code>ELEMENT_NODE</code> and
551     * <code>ATTRIBUTE_NODE</code> and nodes created with a DOM Level 1
552     * method, such as <code>createElement</code> from the
553     * <code>Document</code> interface, this is always <code>null</code>.
554     *
555     * @since 1.4, DOM Level 2
556     */
557    public String getPrefix();
558    /**
559     * The namespace prefix of this node, or <code>null</code> if it is
560     * unspecified. When it is defined to be <code>null</code>, setting it
561     * has no effect, including if the node is read-only.
562     * <br>Note that setting this attribute, when permitted, changes the
563     * <code>nodeName</code> attribute, which holds the qualified name, as
564     * well as the <code>tagName</code> and <code>name</code> attributes of
565     * the <code>Element</code> and <code>Attr</code> interfaces, when
566     * applicable.
567     * <br>Setting the prefix to <code>null</code> makes it unspecified,
568     * setting it to an empty string is implementation dependent.
569     * <br>Note also that changing the prefix of an attribute that is known to
570     * have a default value, does not make a new attribute with the default
571     * value and the original prefix appear, since the
572     * <code>namespaceURI</code> and <code>localName</code> do not change.
573     * <br>For nodes of any type other than <code>ELEMENT_NODE</code> and
574     * <code>ATTRIBUTE_NODE</code> and nodes created with a DOM Level 1
575     * method, such as <code>createElement</code> from the
576     * <code>Document</code> interface, this is always <code>null</code>.
577     * @exception DOMException
578     *   INVALID_CHARACTER_ERR: Raised if the specified prefix contains an
579     *   illegal character according to the XML version in use specified in
580     *   the <code>Document.xmlVersion</code> attribute.
581     *   <br>NO_MODIFICATION_ALLOWED_ERR: Raised if this node is readonly.
582     *   <br>NAMESPACE_ERR: Raised if the specified <code>prefix</code> is
583     *   malformed per the Namespaces in XML specification, if the
584     *   <code>namespaceURI</code> of this node is <code>null</code>, if the
585     *   specified prefix is "xml" and the <code>namespaceURI</code> of this
586     *   node is different from "<a href='http://www.w3.org/XML/1998/namespace'>
587     *   http://www.w3.org/XML/1998/namespace</a>", if this node is an attribute and the specified prefix is "xmlns" and
588     *   the <code>namespaceURI</code> of this node is different from "<a href='http://www.w3.org/2000/xmlns/'>http://www.w3.org/2000/xmlns/</a>", or if this node is an attribute and the <code>qualifiedName</code> of
589     *   this node is "xmlns" [<a href='http://www.w3.org/TR/1999/REC-xml-names-19990114/'>XML Namespaces</a>]
590     *   .
591     *
592     * @since 1.4, DOM Level 2
593     */
594    public void setPrefix(String prefix)
595                               throws DOMException;
596
597    /**
598     * Returns the local part of the qualified name of this node.
599     * <br>For nodes of any type other than <code>ELEMENT_NODE</code> and
600     * <code>ATTRIBUTE_NODE</code> and nodes created with a DOM Level 1
601     * method, such as <code>Document.createElement()</code>, this is always
602     * <code>null</code>.
603     *
604     * @since 1.4, DOM Level 2
605     */
606    public String getLocalName();
607
608    /**
609     * Returns whether this node (if it is an element) has any attributes.
610     * @return Returns <code>true</code> if this node has any attributes,
611     *   <code>false</code> otherwise.
612     *
613     * @since 1.4, DOM Level 2
614     */
615    public boolean hasAttributes();
616
617    /**
618     * The absolute base URI of this node or <code>null</code> if the
619     * implementation wasn't able to obtain an absolute URI. This value is
620     * computed as described in . However, when the <code>Document</code>
621     * supports the feature "HTML" [<a href='http://www.w3.org/TR/2003/REC-DOM-Level-2-HTML-20030109'>DOM Level 2 HTML</a>]
622     * , the base URI is computed using first the value of the href
623     * attribute of the HTML BASE element if any, and the value of the
624     * <code>documentURI</code> attribute from the <code>Document</code>
625     * interface otherwise.
626     *
627     * @since 1.5, DOM Level 3
628     */
629    public String getBaseURI();
630
631    // DocumentPosition
632    /**
633     * The two nodes are disconnected. Order between disconnected nodes is
634     * always implementation-specific.
635     */
636    public static final short DOCUMENT_POSITION_DISCONNECTED = 0x01;
637    /**
638     * The second node precedes the reference node.
639     */
640    public static final short DOCUMENT_POSITION_PRECEDING = 0x02;
641    /**
642     * The node follows the reference node.
643     */
644    public static final short DOCUMENT_POSITION_FOLLOWING = 0x04;
645    /**
646     * The node contains the reference node. A node which contains is always
647     * preceding, too.
648     */
649    public static final short DOCUMENT_POSITION_CONTAINS = 0x08;
650    /**
651     * The node is contained by the reference node. A node which is contained
652     * is always following, too.
653     */
654    public static final short DOCUMENT_POSITION_CONTAINED_BY = 0x10;
655    /**
656     * The determination of preceding versus following is
657     * implementation-specific.
658     */
659    public static final short DOCUMENT_POSITION_IMPLEMENTATION_SPECIFIC = 0x20;
660
661    /**
662     * Compares the reference node, i.e. the node on which this method is
663     * being called, with a node, i.e. the one passed as a parameter, with
664     * regard to their position in the document and according to the
665     * document order.
666     * @param other The node to compare against the reference node.
667     * @return Returns how the node is positioned relatively to the reference
668     *   node.
669     * @exception DOMException
670     *   NOT_SUPPORTED_ERR: when the compared nodes are from different DOM
671     *   implementations that do not coordinate to return consistent
672     *   implementation-specific results.
673     *
674     * @since 1.5, DOM Level 3
675     */
676    public short compareDocumentPosition(Node other)
677                                         throws DOMException;
678
679    /**
680     * This attribute returns the text content of this node and its
681     * descendants. When it is defined to be <code>null</code>, setting it
682     * has no effect. On setting, any possible children this node may have
683     * are removed and, if it the new string is not empty or
684     * <code>null</code>, replaced by a single <code>Text</code> node
685     * containing the string this attribute is set to.
686     * <br> On getting, no serialization is performed, the returned string
687     * does not contain any markup. No whitespace normalization is performed
688     * and the returned string does not contain the white spaces in element
689     * content (see the attribute
690     * <code>Text.isElementContentWhitespace</code>). Similarly, on setting,
691     * no parsing is performed either, the input string is taken as pure
692     * textual content.
693     * <br>The string returned is made of the text content of this node
694     * depending on its type, as defined below:
695     * <table class="striped">
696     * <caption style="display:none">Node/Content table</caption>
697     * <thead>
698     * <tr>
699     * <th scope="col">Node type</th>
700     * <th scope="col">Content</th>
701     * </tr>
702     * </thead>
703     * <tbody>
704     * <tr>
705     * <th scope="row">
706     * ELEMENT_NODE, ATTRIBUTE_NODE, ENTITY_NODE, ENTITY_REFERENCE_NODE,
707     * DOCUMENT_FRAGMENT_NODE</th>
708     * <td>concatenation of the <code>textContent</code>
709     * attribute value of every child node, excluding COMMENT_NODE and
710     * PROCESSING_INSTRUCTION_NODE nodes. This is the empty string if the
711     * node has no children.</td>
712     * </tr>
713     * <tr>
714     * <th scope="row">TEXT_NODE, CDATA_SECTION_NODE, COMMENT_NODE,
715     * PROCESSING_INSTRUCTION_NODE</th>
716     * <td><code>nodeValue</code></td>
717     * </tr>
718     * <tr>
719     * <th scope="row">DOCUMENT_NODE,
720     * DOCUMENT_TYPE_NODE, NOTATION_NODE</th>
721     * <td><em>null</em></td>
722     * </tr>
723     * </tbody>
724     * </table>
725     * @exception DOMException
726     *   DOMSTRING_SIZE_ERR: Raised when it would return more characters than
727     *   fit in a <code>DOMString</code> variable on the implementation
728     *   platform.
729     *
730     * @since 1.5, DOM Level 3
731     */
732    public String getTextContent()
733                                         throws DOMException;
734    /**
735     * This attribute returns the text content of this node and its
736     * descendants. When it is defined to be <code>null</code>, setting it
737     * has no effect. On setting, any possible children this node may have
738     * are removed and, if it the new string is not empty or
739     * <code>null</code>, replaced by a single <code>Text</code> node
740     * containing the string this attribute is set to.
741     * <br> On getting, no serialization is performed, the returned string
742     * does not contain any markup. No whitespace normalization is performed
743     * and the returned string does not contain the white spaces in element
744     * content (see the attribute
745     * <code>Text.isElementContentWhitespace</code>). Similarly, on setting,
746     * no parsing is performed either, the input string is taken as pure
747     * textual content.
748     * <br>The string returned is made of the text content of this node
749     * depending on its type, as defined below:
750     * <table class="striped">
751     * <caption style="display:none">Node/Content table</caption>
752     * <thead>
753     * <tr>
754     * <th scope="col">Node type</th>
755     * <th scope="col">Content</th>
756     * </tr>
757     * </thead>
758     * <tbody>
759     * <tr>
760     * <th scope="row">
761     * ELEMENT_NODE, ATTRIBUTE_NODE, ENTITY_NODE, ENTITY_REFERENCE_NODE,
762     * DOCUMENT_FRAGMENT_NODE</th>
763     * <td>concatenation of the <code>textContent</code>
764     * attribute value of every child node, excluding COMMENT_NODE and
765     * PROCESSING_INSTRUCTION_NODE nodes. This is the empty string if the
766     * node has no children.</td>
767     * </tr>
768     * <tr>
769     * <th scope="row">TEXT_NODE, CDATA_SECTION_NODE, COMMENT_NODE,
770     * PROCESSING_INSTRUCTION_NODE</th>
771     * <td><code>nodeValue</code></td>
772     * </tr>
773     * <tr>
774     * <th scope="row">DOCUMENT_NODE,
775     * DOCUMENT_TYPE_NODE, NOTATION_NODE</th>
776     * <td><em>null</em></td>
777     * </tr>
778     * </tbody>
779     * </table>
780     * @exception DOMException
781     *   NO_MODIFICATION_ALLOWED_ERR: Raised when the node is readonly.
782     *
783     * @since 1.5, DOM Level 3
784     */
785    public void setTextContent(String textContent)
786                                         throws DOMException;
787
788    /**
789     * Returns whether this node is the same node as the given one.
790     * <br>This method provides a way to determine whether two
791     * <code>Node</code> references returned by the implementation reference
792     * the same object. When two <code>Node</code> references are references
793     * to the same object, even if through a proxy, the references may be
794     * used completely interchangeably, such that all attributes have the
795     * same values and calling the same DOM method on either reference
796     * always has exactly the same effect.
797     * @param other The node to test against.
798     * @return Returns <code>true</code> if the nodes are the same,
799     *   <code>false</code> otherwise.
800     *
801     * @since 1.5, DOM Level 3
802     */
803    public boolean isSameNode(Node other);
804
805    /**
806     * Look up the prefix associated to the given namespace URI, starting from
807     * this node. The default namespace declarations are ignored by this
808     * method.
809     * <br>See  for details on the algorithm used by this method.
810     * @param namespaceURI The namespace URI to look for.
811     * @return Returns an associated namespace prefix if found or
812     *   <code>null</code> if none is found. If more than one prefix are
813     *   associated to the namespace prefix, the returned namespace prefix
814     *   is implementation dependent.
815     *
816     * @since 1.5, DOM Level 3
817     */
818    public String lookupPrefix(String namespaceURI);
819
820    /**
821     *  This method checks if the specified <code>namespaceURI</code> is the
822     * default namespace or not.
823     * @param namespaceURI The namespace URI to look for.
824     * @return Returns <code>true</code> if the specified
825     *   <code>namespaceURI</code> is the default namespace,
826     *   <code>false</code> otherwise.
827     *
828     * @since 1.5, DOM Level 3
829     */
830    public boolean isDefaultNamespace(String namespaceURI);
831
832    /**
833     * Look up the namespace URI associated to the given prefix, starting from
834     * this node.
835     * <br>See  for details on the algorithm used by this method.
836     * @param prefix The prefix to look for. If this parameter is
837     *   <code>null</code>, the method will return the default namespace URI
838     *   if any.
839     * @return Returns the associated namespace URI or <code>null</code> if
840     *   none is found.
841     *
842     * @since 1.5, DOM Level 3
843     */
844    public String lookupNamespaceURI(String prefix);
845
846    /**
847     * Tests whether two nodes are equal.
848     * <br>This method tests for equality of nodes, not sameness (i.e.,
849     * whether the two nodes are references to the same object) which can be
850     * tested with <code>Node.isSameNode()</code>. All nodes that are the
851     * same will also be equal, though the reverse may not be true.
852     * <br>Two nodes are equal if and only if the following conditions are
853     * satisfied:
854     * <ul>
855     * <li>The two nodes are of the same type.
856     * </li>
857     * <li>The following string
858     * attributes are equal: <code>nodeName</code>, <code>localName</code>,
859     * <code>namespaceURI</code>, <code>prefix</code>, <code>nodeValue</code>
860     * . This is: they are both <code>null</code>, or they have the same
861     * length and are character for character identical.
862     * </li>
863     * <li>The
864     * <code>attributes</code> <code>NamedNodeMaps</code> are equal. This
865     * is: they are both <code>null</code>, or they have the same length and
866     * for each node that exists in one map there is a node that exists in
867     * the other map and is equal, although not necessarily at the same
868     * index.
869     * </li>
870     * <li>The <code>childNodes</code> <code>NodeLists</code> are equal.
871     * This is: they are both <code>null</code>, or they have the same
872     * length and contain equal nodes at the same index. Note that
873     * normalization can affect equality; to avoid this, nodes should be
874     * normalized before being compared.
875     * </li>
876     * </ul>
877     * <br>For two <code>DocumentType</code> nodes to be equal, the following
878     * conditions must also be satisfied:
879     * <ul>
880     * <li>The following string attributes
881     * are equal: <code>publicId</code>, <code>systemId</code>,
882     * <code>internalSubset</code>.
883     * </li>
884     * <li>The <code>entities</code>
885     * <code>NamedNodeMaps</code> are equal.
886     * </li>
887     * <li>The <code>notations</code>
888     * <code>NamedNodeMaps</code> are equal.
889     * </li>
890     * </ul>
891     * <br>On the other hand, the following do not affect equality: the
892     * <code>ownerDocument</code>, <code>baseURI</code>, and
893     * <code>parentNode</code> attributes, the <code>specified</code>
894     * attribute for <code>Attr</code> nodes, the <code>schemaTypeInfo</code>
895     *  attribute for <code>Attr</code> and <code>Element</code> nodes, the
896     * <code>Text.isElementContentWhitespace</code> attribute for
897     * <code>Text</code> nodes, as well as any user data or event listeners
898     * registered on the nodes.
899     * <p ><b>Note:</b>  As a general rule, anything not mentioned in the
900     * description above is not significant in consideration of equality
901     * checking. Note that future versions of this specification may take
902     * into account more attributes and implementations conform to this
903     * specification are expected to be updated accordingly.
904     * @param arg The node to compare equality with.
905     * @return Returns <code>true</code> if the nodes are equal,
906     *   <code>false</code> otherwise.
907     *
908     * @since 1.5, DOM Level 3
909     */
910    public boolean isEqualNode(Node arg);
911
912    /**
913     *  This method returns a specialized object which implements the
914     * specialized APIs of the specified feature and version, as specified
915     * in . The specialized object may also be obtained by using
916     * binding-specific casting methods but is not necessarily expected to,
917     * as discussed in . This method also allow the implementation to
918     * provide specialized objects which do not support the <code>Node</code>
919     *  interface.
920     * @param feature  The name of the feature requested. Note that any plus
921     *   sign "+" prepended to the name of the feature will be ignored since
922     *   it is not significant in the context of this method.
923     * @param version  This is the version number of the feature to test.
924     * @return  Returns an object which implements the specialized APIs of
925     *   the specified feature and version, if any, or <code>null</code> if
926     *   there is no object which implements interfaces associated with that
927     *   feature. If the <code>DOMObject</code> returned by this method
928     *   implements the <code>Node</code> interface, it must delegate to the
929     *   primary core <code>Node</code> and not return results inconsistent
930     *   with the primary core <code>Node</code> such as attributes,
931     *   childNodes, etc.
932     *
933     * @since 1.5, DOM Level 3
934     */
935    public Object getFeature(String feature,
936                             String version);
937
938    /**
939     * Associate an object to a key on this node. The object can later be
940     * retrieved from this node by calling <code>getUserData</code> with the
941     * same key.
942     * @param key The key to associate the object to.
943     * @param data The object to associate to the given key, or
944     *   <code>null</code> to remove any existing association to that key.
945     * @param handler The handler to associate to that key, or
946     *   <code>null</code>.
947     * @return Returns the <code>DOMUserData</code> previously associated to
948     *   the given key on this node, or <code>null</code> if there was none.
949     *
950     * @since 1.5, DOM Level 3
951     */
952    public Object setUserData(String key,
953                              Object data,
954                              UserDataHandler handler);
955
956    /**
957     * Retrieves the object associated to a key on a this node. The object
958     * must first have been set to this node by calling
959     * <code>setUserData</code> with the same key.
960     * @param key The key the object is associated to.
961     * @return Returns the <code>DOMUserData</code> associated to the given
962     *   key on this node, or <code>null</code> if there was none.
963     *
964     * @since 1.5, DOM Level 3
965     */
966    public Object getUserData(String key);
967
968}
969