content: /*
   *  This file is part of AndroidIDE.
   *
   *  AndroidIDE is free software: you can redistribute it and/or modify
   *  it under the terms of the GNU General Public License as published by
   *  the Free Software Foundation, either version 3 of the License, or
   *  (at your option) any later version.
   *
   *  AndroidIDE is distributed in the hope that it will be useful,
   *  but WITHOUT ANY WARRANTY; without even the implied warranty of
   *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   *  GNU General Public License for more details.
   *
   *  You should have received a copy of the GNU General Public License
   *   along with AndroidIDE.  If not, see <https://www.gnu.org/licenses/>.
   */
  
  /*
   * reserved comment block
   * DO NOT REMOVE OR ALTER!
   */
  /*
   * Copyright 1999-2004 The Apache Software Foundation.
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *     http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  /*
   * $Id: UnImplNode.java,v
   */
  package jaxp.sun.org.apache.xml.internal.utils;
  
  import jaxp.sun.org.apache.xml.internal.res.XMLErrorResources;
  import jaxp.sun.org.apache.xml.internal.res.XMLMessages;
  
  import org.w3c.dom.Attr;
  import org.w3c.dom.CDATASection;
  import org.w3c.dom.Comment;
  import org.w3c.dom.DOMException;
  import org.w3c.dom.DOMImplementation;
  import org.w3c.dom.Document;
  import org.w3c.dom.DocumentFragment;
  import org.w3c.dom.DocumentType;
  import org.w3c.dom.Element;
  import org.w3c.dom.EntityReference;
  import org.w3c.dom.NamedNodeMap;
  import org.w3c.dom.Node;
  import org.w3c.dom.NodeList;
  import org.w3c.dom.ProcessingInstruction;
  import org.w3c.dom.Text;
  
  import org.w3c.dom.UserDataHandler;
  import org.w3c.dom.DOMConfiguration;
  import org.w3c.dom.TypeInfo;
  
  /**
   * <meta name="usage" content="internal"/>
   * To be subclassed by classes that wish to fake being nodes.
   */
  public class UnImplNode implements Node, Element, NodeList, Document
  {
  
    /**
     * Constructor UnImplNode
     *
     */
    public UnImplNode(){}
  
    /**
     * Throw an error.
     *
     * @param msg Message Key for the error
     */
    public void error(String msg)
    {
  
      System.out.println("DOM ERROR! class: " + this.getClass().getName());
  
      throw new RuntimeException(XMLMessages.createXMLMessage(msg, null));
    }
  
    /**
     * Throw an error.
     *
     * @param msg Message Key for the error
     * @param args Array of arguments to be used in the error message
     */
    public void error(String msg, Object[] args)
    {
  
      System.out.println("DOM ERROR! class: " + this.getClass().getName());
  
      throw new RuntimeException(XMLMessages.createXMLMessage(msg, args));  //"UnImplNode error: "+msg);
    }
  
    /**
     * Unimplemented. See org.w3c.dom.Node
     *
     * @param newChild New node to append to the list of this node's children
     *
     * @return null
     *
     * @throws DOMException
     */
    public Node appendChild(Node newChild) throws DOMException
    {
  
      error(XMLErrorResources.ER_FUNCTION_NOT_SUPPORTED);  //"appendChild not supported!");
  
      return null;
    }
  
    /**
     * Unimplemented. See org.w3c.dom.Node
     *
     * @return false
     */
    public boolean hasChildNodes()
    {
  
      error(XMLErrorResources.ER_FUNCTION_NOT_SUPPORTED);  //"hasChildNodes not supported!");
  
      return false;
    }
  
    /**
     * Unimplemented. See org.w3c.dom.Node
     *
     * @return 0
     */
    public short getNodeType()
    {
  
      error(XMLErrorResources.ER_FUNCTION_NOT_SUPPORTED);  //"getNodeType not supported!");
  
      return 0;
    }
  
    /**
     * Unimplemented. See org.w3c.dom.Node
     *
     * @return null
     */
    public Node getParentNode()
    {
  
      error(XMLErrorResources.ER_FUNCTION_NOT_SUPPORTED);  //"getParentNode not supported!");
  
      return null;
    }
  
    /**
     * Unimplemented. See org.w3c.dom.Node
     *
     * @return null
     */
    public NodeList getChildNodes()
    {
  
      error(XMLErrorResources.ER_FUNCTION_NOT_SUPPORTED);  //"getChildNodes not supported!");
  
      return null;
    }
  
    /**
     * Unimplemented. See org.w3c.dom.Node
     *
     * @return null
     */
    public Node getFirstChild()
    {
  
      error(XMLErrorResources.ER_FUNCTION_NOT_SUPPORTED);  //"getFirstChild not supported!");
  
      return null;
    }
  
    /**
     * Unimplemented. See org.w3c.dom.Node
     *
     * @return null
     */
    public Node getLastChild()
    {
  
      error(XMLErrorResources.ER_FUNCTION_NOT_SUPPORTED);  //"getLastChild not supported!");
  
      return null;
    }
  
    /**
     * Unimplemented. See org.w3c.dom.Node
     *
     * @return null
     */
    public Node getNextSibling()
    {
  
      error(XMLErrorResources.ER_FUNCTION_NOT_SUPPORTED);  //"getNextSibling not supported!");
  
      return null;
    }
  
    /**
     * Unimplemented. See org.w3c.dom.NodeList
     *
     * @return 0
     */
    public int getLength()
    {
  
      error(XMLErrorResources.ER_FUNCTION_NOT_SUPPORTED);  //"getLength not supported!");
  
      return 0;
    }  // getLength():int
  
    /**
     * Unimplemented. See org.w3c.dom.NodeList
     *
     * @param index index of a child of this node in its list of children
     *
     * @return null
     */
    public Node item(int index)
    {
  
      error(XMLErrorResources.ER_FUNCTION_NOT_SUPPORTED);  //"item not supported!");
  
      return null;
    }  // item(int):Node
  
    /**
     * Unimplemented. See org.w3c.dom.Node
     *
     * @return null
     */
    public Document getOwnerDocument()
    {
  
      error(XMLErrorResources.ER_FUNCTION_NOT_SUPPORTED);  //"getOwnerDocument not supported!");
  
      return null;
    }
  
    /**
     * Unimplemented. See org.w3c.dom.Node
     *
     * @return null
     */
    public String getTagName()
    {
  
      error(XMLErrorResources.ER_FUNCTION_NOT_SUPPORTED);  //"getTagName not supported!");
  
      return null;
    }
  
    /**
     * Unimplemented. See org.w3c.dom.Node
     *
     * @return null
     */
    public String getNodeName()
    {
  
      error(XMLErrorResources.ER_FUNCTION_NOT_SUPPORTED);  //"getNodeName not supported!");
  
      return null;
    }
  
    /** Unimplemented. See org.w3c.dom.Node */
    public void normalize()
    {
      error(XMLErrorResources.ER_FUNCTION_NOT_SUPPORTED);  //"normalize not supported!");
    }
  
    /**
     * Unimplemented. See org.w3c.dom.Element
     *
     * @param name Name of the element
     *
     * @return null
     */
    public NodeList getElementsByTagName(String name)
    {
  
      error(XMLErrorResources.ER_FUNCTION_NOT_SUPPORTED);  //"getElementsByTagName not supported!");
  
      return null;
    }
  
    /**
     * Unimplemented. See org.w3c.dom.Element
     *
     * @param oldAttr Attribute to be removed from this node's list of attributes
     *
     * @return null
     *
     * @throws DOMException
     */
    public Attr removeAttributeNode(Attr oldAttr) throws DOMException
    {
  
      error(XMLErrorResources.ER_FUNCTION_NOT_SUPPORTED);  //"removeAttributeNode not supported!");
  
      return null;
    }
  
    /**
     * Unimplemented. See org.w3c.dom.Element
     *
     * @param newAttr Attribute node to be added to this node's list of attributes
     *
     * @return null
     *
     * @throws DOMException
     */
    public Attr setAttributeNode(Attr newAttr) throws DOMException
    {
  
      error(XMLErrorResources.ER_FUNCTION_NOT_SUPPORTED);  //"setAttributeNode not supported!");
  
      return null;
    }
  
    /**
     * Unimplemented. See org.w3c.dom.Element
     *
     *
     * @param name Name of an attribute
     *
     * @return false
     */
    public boolean hasAttribute(String name)
    {
  
      error(XMLErrorResources.ER_FUNCTION_NOT_SUPPORTED);  //"hasAttribute not supported!");
  
      return false;
    }
  
    /**
     * Unimplemented. See org.w3c.dom.Element
     *
     *
     * @param name
     * @param x
     *
     * @return false
     */
    public boolean hasAttributeNS(String name, String x)
    {
  
      error(XMLErrorResources.ER_FUNCTION_NOT_SUPPORTED);  //"hasAttributeNS not supported!");
  
      return false;
    }
  
    /**
     * Unimplemented. See org.w3c.dom.Element
     *
     *
     * @param name Attribute node name
     *
     * @return null
     */
    public Attr getAttributeNode(String name)
    {
  
      error(XMLErrorResources.ER_FUNCTION_NOT_SUPPORTED);  //"getAttributeNode not supported!");
  
      return null;
    }
  
    /**
     * Unimplemented. See org.w3c.dom.Element
     *
     * @param name Attribute node name to remove from list of attributes
     *
     * @throws DOMException
     */
    public void removeAttribute(String name) throws DOMException
    {
      error(XMLErrorResources.ER_FUNCTION_NOT_SUPPORTED);  //"removeAttribute not supported!");
    }
  
    /**
     * Unimplemented. See org.w3c.dom.Element
     *
     * @param name Name of attribute to set
     * @param value Value of attribute
     *
     * @throws DOMException
     */
    public void setAttribute(String name, String value) throws DOMException
    {
      error(XMLErrorResources.ER_FUNCTION_NOT_SUPPORTED);  //"setAttribute not supported!");
    }
  
    /**
     * Unimplemented. See org.w3c.dom.Element
     *
     * @param name Name of attribute to get
     *
     * @return null
     */
    public String getAttribute(String name)
    {
  
      error(XMLErrorResources.ER_FUNCTION_NOT_SUPPORTED);  //"getAttribute not supported!");
  
      return null;
    }
  
    /**
     * Unimplemented. Introduced in DOM Level 2.
     *
     * @return false
     */
    public boolean hasAttributes()
    {
  
      error(XMLErrorResources.ER_FUNCTION_NOT_SUPPORTED);  //"hasAttributes not supported!");
  
      return false;
    }
  
    /**
     * Unimplemented. See org.w3c.dom.Element
     *
     * @param namespaceURI Namespace URI of the element
     * @param localName Local part of qualified name of the element
     *
     * @return null
     */
    public NodeList getElementsByTagNameNS(String namespaceURI,
                                           String localName)
    {
  
      error(XMLErrorResources.ER_FUNCTION_NOT_SUPPORTED);  //"getElementsByTagNameNS not supported!");
  
      return null;
    }
  
    /**
     * Unimplemented. See org.w3c.dom.Element
     *
     * @param newAttr Attribute to set
     *
     * @return null
     *
     * @throws DOMException
     */
    public Attr setAttributeNodeNS(Attr newAttr) throws DOMException
    {
  
      error(XMLErrorResources.ER_FUNCTION_NOT_SUPPORTED);  //"setAttributeNodeNS not supported!");
  
      return null;
    }
  
    /**
     * Unimplemented. See org.w3c.dom.Element
     *
     * @param namespaceURI Namespace URI of attribute node to get
     * @param localName Local part of qualified name of attribute node to get
     *
     * @return null
     */
    public Attr getAttributeNodeNS(String namespaceURI, String localName)
    {
  
      error(XMLErrorResources.ER_FUNCTION_NOT_SUPPORTED);  //"getAttributeNodeNS not supported!");
  
      return null;
    }
  
    /**
     * Unimplemented. See org.w3c.dom.Element
     *
     * @param namespaceURI Namespace URI of attribute node to remove
     * @param localName Local part of qualified name of attribute node to remove
     *
     * @throws DOMException
     */
    public void removeAttributeNS(String namespaceURI, String localName)
            throws DOMException
    {
      error(XMLErrorResources.ER_FUNCTION_NOT_SUPPORTED);  //"removeAttributeNS not supported!");
    }
  
    /**
     * Unimplemented. See org.w3c.dom.Element
     *
     * @param namespaceURI Namespace URI of attribute node to set
     * @param qualifiedName qualified name of attribute
     * @param value value of attribute
     *
     * @throws DOMException
     */
    public void setAttributeNS(
            String namespaceURI, String qualifiedName, String value)
              throws DOMException
    {
      error(XMLErrorResources.ER_FUNCTION_NOT_SUPPORTED);  //"setAttributeNS not supported!");
    }
  
    /**
     * Unimplemented. See org.w3c.dom.Element
     *
     * @param namespaceURI Namespace URI of attribute node to get
     * @param localName Local part of qualified name of attribute node to get
     *
     * @return null
     */
    public String getAttributeNS(String namespaceURI, String localName)
    {
  
      error(XMLErrorResources.ER_FUNCTION_NOT_SUPPORTED);  //"getAttributeNS not supported!");
  
      return null;
    }
  
    /**
     * Unimplemented. See org.w3c.dom.Node
     *
     * @return null
     */
    public Node getPreviousSibling()
    {
  
      error(XMLErrorResources.ER_FUNCTION_NOT_SUPPORTED);  //"getPreviousSibling not supported!");
  
      return null;
    }
  
    /**
     * Unimplemented. See org.w3c.dom.Node
     *
     * @param deep Flag indicating whether to clone deep (clone member variables)
     *
     * @return null
     */
    public Node cloneNode(boolean deep)
    {
  
      error(XMLErrorResources.ER_FUNCTION_NOT_SUPPORTED);  //"cloneNode not supported!");
  
      return null;
    }
  
    /**
     * Unimplemented. See org.w3c.dom.Node
     *
     * @return null
     *
     * @throws DOMException
     */
    public String getNodeValue() throws DOMException
    {
  
      error(XMLErrorResources.ER_FUNCTION_NOT_SUPPORTED);  //"getNodeValue not supported!");
  
      return null;
    }
  
    /**
     * Unimplemented. See org.w3c.dom.Node
     *
     * @param nodeValue Value to set this node to
     *
     * @throws DOMException
     */
    public void setNodeValue(String nodeValue) throws DOMException
    {
      error(XMLErrorResources.ER_FUNCTION_NOT_SUPPORTED);  //"setNodeValue not supported!");
    }
  
    /**
     * Unimplemented. See org.w3c.dom.Node
     *
     *
     * NEEDSDOC @param value
     * @return value Node value
     *
     * @throws DOMException
     */
  
    // public String getValue ()
    // {
    //  error(XMLErrorResources.ER_FUNCTION_NOT_SUPPORTED); //"getValue not supported!");
    //  return null;
    // }
  
    /**
     * Unimplemented. See org.w3c.dom.Node
     *
     * @param value Value to set this node to
     *
     * @throws DOMException
     */
    public void setValue(String value) throws DOMException
    {
      error(XMLErrorResources.ER_FUNCTION_NOT_SUPPORTED);  //"setValue not supported!");
    }
  
    /**
     *  Returns the name of this attribute.
     *
     * @return the name of this attribute.
     */
  
    // public String getName()
    // {
    //  return this.getNodeName();
    // }
  
    /**
     * Unimplemented. See org.w3c.dom.Node
     *
     * @return null
     */
    public Element getOwnerElement()
    {
  
      error(XMLErrorResources.ER_FUNCTION_NOT_SUPPORTED);  //"getOwnerElement not supported!");
  
      return null;
    }
  
    /**
     * Unimplemented. See org.w3c.dom.Node
     *
     * @return False
     */
    public boolean getSpecified()
    {
  
      error(XMLErrorResources.ER_FUNCTION_NOT_SUPPORTED);  //"setValue not supported!");
  
      return false;
    }
  
    /**
     * Unimplemented. See org.w3c.dom.Node
     *
     * @return null
     */
    public NamedNodeMap getAttributes()
    {
  
      error(XMLErrorResources.ER_FUNCTION_NOT_SUPPORTED);  //"getAttributes not supported!");
  
      return null;
    }
  
    /**
     * Unimplemented. See org.w3c.dom.Node
     *
     * @param newChild New child node to insert
     * @param refChild Insert in front of this child
     *
     * @return null
     *
     * @throws DOMException
     */
    public Node insertBefore(Node newChild, Node refChild) throws DOMException
    {
  
      error(XMLErrorResources.ER_FUNCTION_NOT_SUPPORTED);  //"insertBefore not supported!");
  
      return null;
    }
  
    /**
     * Unimplemented. See org.w3c.dom.Node
     *
     * @param newChild Replace existing child with this one
     * @param oldChild Existing child to be replaced
     *
     * @return null
     *
     * @throws DOMException
     */
    public Node replaceChild(Node newChild, Node oldChild) throws DOMException
    {
  
      error(XMLErrorResources.ER_FUNCTION_NOT_SUPPORTED);  //"replaceChild not supported!");
  
      return null;
    }
  
    /**
     * Unimplemented. See org.w3c.dom.Node
     *
     * @param oldChild Child to be removed
     *
     * @return null
     *
     * @throws DOMException
     */
    public Node removeChild(Node oldChild) throws DOMException
    {
  
      error(XMLErrorResources.ER_FUNCTION_NOT_SUPPORTED);  //"replaceChild not supported!");
  
      return null;
    }
  
    /**
     * Tests whether the DOM implementation implements a specific feature and
     * that feature is supported by this node.
     * @param feature The name of the feature to test. This is the same name
     *   which can be passed to the method <code>hasFeature</code> on
     *   <code>DOMImplementation</code>.
     * @param version This is the version number of the feature to test. In
     *   Level 2, version 1, this is the string "2.0". If the version is not
     *   specified, supporting any version of the feature will cause the
     *   method to return <code>true</code>.
     *
     * @return Returns <code>false</code>
     * @since DOM Level 2
     */
    public boolean isSupported(String feature, String version)
    {
      return false;
    }
  
    /**
     * Unimplemented. See org.w3c.dom.Node
     *
     * @return null
     */
    public String getNamespaceURI()
    {
  
      error(XMLErrorResources.ER_FUNCTION_NOT_SUPPORTED);  //"getNamespaceURI not supported!");
  
      return null;
    }
  
    /**
     * Unimplemented. See org.w3c.dom.Node
     *
     * @return null
     */
    public String getPrefix()
    {
  
      error(XMLErrorResources.ER_FUNCTION_NOT_SUPPORTED);  //"getPrefix not supported!");
  
      return null;
    }
  
    /**
     * Unimplemented. See org.w3c.dom.Node
     *
     * @param prefix Prefix to set for this node
     *
     * @throws DOMException
     */
    public void setPrefix(String prefix) throws DOMException
    {
      error(XMLErrorResources.ER_FUNCTION_NOT_SUPPORTED);  //"setPrefix not supported!");
    }
  
    /**
     * Unimplemented. See org.w3c.dom.Node
     *
     * @return null
     */
    public String getLocalName()
    {
  
      error(XMLErrorResources.ER_FUNCTION_NOT_SUPPORTED);  //"getLocalName not supported!");
  
      return null;
    }
  
    /**
     * Unimplemented. See org.w3c.dom.Document
     *
     * @return null
     */
    public DocumentType getDoctype()
    {
  
      error(XMLErrorResources.ER_FUNCTION_NOT_SUPPORTED);
  
      return null;
    }
  
    /**
     * Unimplemented. See org.w3c.dom.Document
     *
     * @return null
     */
    public DOMImplementation getImplementation()
    {
  
      error(XMLErrorResources.ER_FUNCTION_NOT_SUPPORTED);
  
      return null;
    }
  
    /**
     * Unimplemented. See org.w3c.dom.Document
     *
     * @return null
     */
    public Element getDocumentElement()
    {
  
      error(XMLErrorResources.ER_FUNCTION_NOT_SUPPORTED);
  
      return null;
    }
  
    /**
     * Unimplemented. See org.w3c.dom.Document
     *
     * @param tagName Element tag name
     *
     * @return null
     *
     * @throws DOMException
     */
    public Element createElement(String tagName) throws DOMException
    {
  
      error(XMLErrorResources.ER_FUNCTION_NOT_SUPPORTED);
  
      return null;
    }
  
    /**
     * Unimplemented. See org.w3c.dom.Document
     *
     * @return null
     */
    public DocumentFragment createDocumentFragment()
    {
  
      error(XMLErrorResources.ER_FUNCTION_NOT_SUPPORTED);
  
      return null;
    }
  
    /**
     * Unimplemented. See org.w3c.dom.Document
     *
     * @param data Data for text node
     *
     * @return null
     */
    public Text createTextNode(String data)
    {
  
      error(XMLErrorResources.ER_FUNCTION_NOT_SUPPORTED);
  
      return null;
    }
  
    /**
     * Unimplemented. See org.w3c.dom.Document
     *
     * @param data Data for comment
     *
     * @return null
     */
    public Comment createComment(String data)
    {
  
      error(XMLErrorResources.ER_FUNCTION_NOT_SUPPORTED);
  
      return null;
    }
  
    /**
     * Unimplemented. See org.w3c.dom.Document
     *
     * @param data Data for CDATA section
     *
     * @return null
     *
     * @throws DOMException
     */
    public CDATASection createCDATASection(String data) throws DOMException
    {
  
      error(XMLErrorResources.ER_FUNCTION_NOT_SUPPORTED);
  
      return null;
    }
  
    /**
     * Unimplemented. See org.w3c.dom.Document
     *
     * @param target Target for Processing instruction
     * @param data Data for Processing instruction
     *
     * @return null
     *
     * @throws DOMException
     */
    public ProcessingInstruction createProcessingInstruction(
            String target, String data) throws DOMException
    {
  
      error(XMLErrorResources.ER_FUNCTION_NOT_SUPPORTED);
  
      return null;
    }
  
    /**
     * Unimplemented. See org.w3c.dom.Document
     *
     * @param name Attribute name
     *
     * @return null
     *
     * @throws DOMException
     */
    public Attr createAttribute(String name) throws DOMException
    {
  
      error(XMLErrorResources.ER_FUNCTION_NOT_SUPPORTED);
  
      return null;
    }
  
    /**
     * Unimplemented. See org.w3c.dom.Document
     *
     * @param name Entity Reference name
     *
     * @return null
     *
     * @throws DOMException
     */
    public EntityReference createEntityReference(String name)
            throws DOMException
    {
  
      error(XMLErrorResources.ER_FUNCTION_NOT_SUPPORTED);
  
      return null;
    }
  
    /**
     * Unimplemented. See org.w3c.dom.Document
     *
     * @param importedNode The node to import.
     * @param deep If <code>true</code>, recursively import the subtree under
     *   the specified node; if <code>false</code>, import only the node
     *   itself, as explained above. This has no effect on <code>Attr</code>
     *   , <code>EntityReference</code>, and <code>Notation</code> nodes.
     *
     * @return null
     *
     * @throws DOMException
     */
    public Node importNode(Node importedNode, boolean deep) throws DOMException
    {
  
      error(XMLErrorResources.ER_FUNCTION_NOT_SUPPORTED);
  
      return null;
    }
  
    /**
     * Unimplemented. See org.w3c.dom.Document
     *
     * @param namespaceURI Namespace URI for the element
     * @param qualifiedName Qualified name of the element
     *
     * @return null
     *
     * @throws DOMException
     */
    public Element createElementNS(String namespaceURI, String qualifiedName)
            throws DOMException
    {
  
      error(XMLErrorResources.ER_FUNCTION_NOT_SUPPORTED);
  
      return null;
    }
  
    /**
     * Unimplemented. See org.w3c.dom.Document
     *
     * @param namespaceURI Namespace URI of the attribute
     * @param qualifiedName Qualified name of the attribute
     *
     * @return null
     *
     * @throws DOMException
     */
    public Attr createAttributeNS(String namespaceURI, String qualifiedName)
            throws DOMException
    {
  
      error(XMLErrorResources.ER_FUNCTION_NOT_SUPPORTED);
  
      return null;
    }
  
    /**
     * Unimplemented. See org.w3c.dom.Document
     *
     * @param elementId ID of the element to get
     *
     * @return null
     */
    public Element getElementById(String elementId)
    {
  
      error(XMLErrorResources.ER_FUNCTION_NOT_SUPPORTED);
  
      return null;
    }
  
    /**
     * Set Node data
     *
     *
     * @param data data to set for this node
     *
     * @throws DOMException
     */
    public void setData(String data) throws DOMException
    {
      error(XMLErrorResources.ER_FUNCTION_NOT_SUPPORTED);
    }
  
    /**
     * Unimplemented.
     *
     * @param offset Start offset of substring to extract.
     * @param count The length of the substring to extract.
     *
     * @return null
     *
     * @throws DOMException
     */
    public String substringData(int offset, int count) throws DOMException
    {
  
      error(XMLErrorResources.ER_FUNCTION_NOT_SUPPORTED);
  
      return null;
    }
  
    /**
     * Unimplemented.
     *
     * @param arg String data to append
     *
     * @throws DOMException
     */
    public void appendData(String arg) throws DOMException
    {
      error(XMLErrorResources.ER_FUNCTION_NOT_SUPPORTED);
    }
  
    /**
     * Unimplemented.
     *
     * @param offset Start offset of substring to insert.
     * @param arg The (sub)string to insert.
     *
     * @throws DOMException
     */
    public void insertData(int offset, String arg) throws DOMException
    {
      error(XMLErrorResources.ER_FUNCTION_NOT_SUPPORTED);
    }
  
    /**
     * Unimplemented.
     *
     * @param offset Start offset of substring to delete.
     * @param count The length of the substring to delete.
     *
     * @throws DOMException
     */
    public void deleteData(int offset, int count) throws DOMException
    {
      error(XMLErrorResources.ER_FUNCTION_NOT_SUPPORTED);
    }
  
    /**
     * Unimplemented.
     *
     * @param offset Start offset of substring to replace.
     * @param count The length of the substring to replace.
     * @param arg substring to replace with
     *
     * @throws DOMException
     */
    public void replaceData(int offset, int count, String arg)
            throws DOMException
    {
      error(XMLErrorResources.ER_FUNCTION_NOT_SUPPORTED);
    }
  
    /**
     * Unimplemented.
     *
     * @param offset Offset into text to split
     *
     * @return null, unimplemented
     *
     * @throws DOMException
     */
    public Text splitText(int offset) throws DOMException
    {
  
      error(XMLErrorResources.ER_FUNCTION_NOT_SUPPORTED);
  
      return null;
    }
  
    /**
     * NEEDSDOC Method adoptNode
     *
     *
     * NEEDSDOC @param source
     *
     * NEEDSDOC (adoptNode) @return
     *
     * @throws DOMException
     */
    public Node adoptNode(Node source) throws DOMException
    {
  
      error(XMLErrorResources.ER_FUNCTION_NOT_SUPPORTED);
  
      return null;
    }
  
    /**
     * <p>EXPERIMENTAL! Based on the <a
     * href='http://www.w3.org/TR/2001/WD-DOM-Level-3-Core-20010605'>Document
     * Object Model (DOM) Level 3 Core Working Draft of 5 June 2001.</a>.
     * <p>
     * An attribute specifying, as part of the XML declaration, the encoding
     * of this document. This is <code>null</code> when unspecified.
     * @since DOM Level 3
     *
     * NEEDSDOC ($objectName$) @return
     */
    public String getInputEncoding()
    {
  
      error(XMLErrorResources.ER_FUNCTION_NOT_SUPPORTED);
  
      return null;
    }
  
    /**
     * <p>EXPERIMENTAL! Based on the <a
     * href='http://www.w3.org/TR/2001/WD-DOM-Level-3-Core-20010605'>Document
     * Object Model (DOM) Level 3 Core Working Draft of 5 June 2001.</a>.
     * <p>
     * An attribute specifying, as part of the XML declaration, the encoding
     * of this document. This is <code>null</code> when unspecified.
     * @since DOM Level 3
     *
     * NEEDSDOC @param encoding
     */
    public void setInputEncoding(String encoding)
    {
      error(XMLErrorResources.ER_FUNCTION_NOT_SUPPORTED);
    }
  
    /**
     * <p>EXPERIMENTAL! Based on the <a
     * href='http://www.w3.org/TR/2001/WD-DOM-Level-3-Core-20010605'>Document
     * Object Model (DOM) Level 3 Core Working Draft of 5 June 2001.</a>.
     * <p>
     * An attribute specifying, as part of the XML declaration, whether this
     * document is standalone.
     * @since DOM Level 3
     *
     * NEEDSDOC ($objectName$) @return
     */
    public boolean getStandalone()
    {
  
      error(XMLErrorResources.ER_FUNCTION_NOT_SUPPORTED);
  
      return false;
    }
  
    /**
     * <p>EXPERIMENTAL! Based on the <a
     * href='http://www.w3.org/TR/2001/WD-DOM-Level-3-Core-20010605'>Document
     * Object Model (DOM) Level 3 Core Working Draft of 5 June 2001.</a>.
     * <p>
     * An attribute specifying, as part of the XML declaration, whether this
     * document is standalone.
     * @since DOM Level 3
     *
     * NEEDSDOC @param standalone
     */
    public void setStandalone(boolean standalone)
    {
      error(XMLErrorResources.ER_FUNCTION_NOT_SUPPORTED);
    }
  
    /**
     * <p>EXPERIMENTAL! Based on the <a
     * href='http://www.w3.org/TR/2001/WD-DOM-Level-3-Core-20010605'>Document
     * Object Model (DOM) Level 3 Core Working Draft of 5 June 2001.</a>.
     * <p>
     * An attribute specifying whether errors checking is enforced or not.
     * When set to <code>false</code>, the implementation is free to not
     * test every possible error case normally defined on DOM operations,
     * and not raise any <code>DOMException</code>. In case of error, the
     * behavior is undefined. This attribute is <code>true</code> by
     * defaults.
     * @since DOM Level 3
     *
     * NEEDSDOC ($objectName$) @return
     */
    public boolean getStrictErrorChecking()
    {
  
      error(XMLErrorResources.ER_FUNCTION_NOT_SUPPORTED);
  
      return false;
    }
  
    /**
     * <p>EXPERIMENTAL! Based on the <a
     * href='http://www.w3.org/TR/2001/WD-DOM-Level-3-Core-20010605'>Document
     * Object Model (DOM) Level 3 Core Working Draft of 5 June 2001.</a>.
     * <p>
     * An attribute specifying whether errors checking is enforced or not.
     * When set to <code>false</code>, the implementation is free to not
     * test every possible error case normally defined on DOM operations,
     * and not raise any <code>DOMException</code>. In case of error, the
     * behavior is undefined. This attribute is <code>true</code> by
     * defaults.
     * @since DOM Level 3
     *
     * NEEDSDOC @param strictErrorChecking
     */
    public void setStrictErrorChecking(boolean strictErrorChecking)
    {
      error(XMLErrorResources.ER_FUNCTION_NOT_SUPPORTED);
    }
  
    /**
     * <p>EXPERIMENTAL! Based on the <a
     * href='http://www.w3.org/TR/2001/WD-DOM-Level-3-Core-20010605'>Document
     * Object Model (DOM) Level 3 Core Working Draft of 5 June 2001.</a>.
     * <p>
     * An attribute specifying, as part of the XML declaration, the version
     * number of this document. This is <code>null</code> when unspecified.
     * @since DOM Level 3
     *
     * NEEDSDOC ($objectName$) @return
     */
    public String getVersion()
    {
  
      error(XMLErrorResources.ER_FUNCTION_NOT_SUPPORTED);
  
      return null;
    }
  
    /**
     * <p>EXPERIMENTAL! Based on the <a
     * href='http://www.w3.org/TR/2001/WD-DOM-Level-3-Core-20010605'>Document
     * Object Model (DOM) Level 3 Core Working Draft of 5 June 2001.</a>.
     * <p>
     * An attribute specifying, as part of the XML declaration, the version
     * number of this document. This is <code>null</code> when unspecified.
     * @since DOM Level 3
     *
     * NEEDSDOC @param version
     */
    public void setVersion(String version)
    {
      error(XMLErrorResources.ER_FUNCTION_NOT_SUPPORTED);
    }
  
  
  
  //RAMESH : Pending proper implementation of DOM Level 3
  
      public Object setUserData(String key,
                                Object data,
                                UserDataHandler handler) {
          return getOwnerDocument().setUserData( key, data, handler);
      }
  
      /**
       * Retrieves the object associated to a key on a this node. The object
       * must first have been set to this node by calling
       * <code>setUserData</code> with the same key.
       * @param key The key the object is associated to.
       * @return Returns the <code>DOMObject</code> associated to the given key
       *   on this node, or <code>null</code> if there was none.
       * @since DOM Level 3
       */
      public Object getUserData(String key) {
          return getOwnerDocument().getUserData( key);
      }
  
        /**
       *  This method returns a specialized object which implements the
       * specialized APIs of the specified feature and version. The
       * specialized object may also be obtained by using binding-specific
       * casting methods but is not necessarily expected to, as discussed in Mixed DOM implementations.
       * @param feature The name of the feature requested (case-insensitive).
       * @param version  This is the version number of the feature to test. If
       *   the version is <code>null</code> or the empty string, supporting
       *   any version of the feature will cause the method to return an
       *   object that supports at least one version of the feature.
       * @return  Returns an object which implements the specialized APIs of
       *   the specified feature and version, if any, or <code>null</code> if
       *   there is no object which implements interfaces associated with that
       *   feature. If the <code>DOMObject</code> returned by this method
       *   implements the <code>Node</code> interface, it must delegate to the
       *   primary core <code>Node</code> and not return results inconsistent
       *   with the primary core <code>Node</code> such as attributes,
       *   childNodes, etc.
       * @since DOM Level 3
       */
      public Object getFeature(String feature, String version) {
          // we don't have any alternate node, either this node does the job
          // or we don't have anything that does
          return isSupported(feature, version) ? this : null;
      }
  
      /**
       * Tests whether two nodes are equal.
       * <br>This method tests for equality of nodes, not sameness (i.e.,
       * whether the two nodes are references to the same object) which can be
       * tested with <code>Node.isSameNode</code>. All nodes that are the same
       * will also be equal, though the reverse may not be true.
       * <br>Two nodes are equal if and only if the following conditions are
       * satisfied: The two nodes are of the same type.The following string
       * attributes are equal: <code>nodeName</code>, <code>localName</code>,
       * <code>namespaceURI</code>, <code>prefix</code>, <code>nodeValue</code>
       * , <code>baseURI</code>. This is: they are both <code>null</code>, or
       * they have the same length and are character for character identical.
       * The <code>attributes</code> <code>NamedNodeMaps</code> are equal.
       * This is: they are both <code>null</code>, or they have the same
       * length and for each node that exists in one map there is a node that
       * exists in the other map and is equal, although not necessarily at the
       * same index.The <code>childNodes</code> <code>NodeLists</code> are
       * equal. This is: they are both <code>null</code>, or they have the
       * same length and contain equal nodes at the same index. This is true
       * for <code>Attr</code> nodes as for any other type of node. Note that
       * normalization can affect equality; to avoid this, nodes should be
       * normalized before being compared.
       * <br>For two <code>DocumentType</code> nodes to be equal, the following
       * conditions must also be satisfied: The following string attributes
       * are equal: <code>publicId</code>, <code>systemId</code>,
       * <code>internalSubset</code>.The <code>entities</code>
       * <code>NamedNodeMaps</code> are equal.The <code>notations</code>
       * <code>NamedNodeMaps</code> are equal.
       * <br>On the other hand, the following do not affect equality: the
       * <code>ownerDocument</code> attribute, the <code>specified</code>
       * attribute for <code>Attr</code> nodes, the
       * <code>isWhitespaceInElementContent</code> attribute for
       * <code>Text</code> nodes, as well as any user data or event listeners
       * registered on the nodes.
       *
       * @param arg The node to compare equality with.
       * @return If the nodes, and possibly subtrees are equal,
       *   <code>true</code> otherwise <code>false</code>.
       * @since DOM Level 3
       */
      public boolean isEqualNode(Node arg) {
          if (arg == this) {
              return true;
          }
          if (arg.getNodeType() != getNodeType()) {
              return false;
          }
          // in theory nodeName can't be null but better be careful
          // who knows what other implementations may be doing?...
          if (getNodeName() == null) {
              if (arg.getNodeName() != null) {
                  return false;
              }
          }
          else if (!getNodeName().equals(arg.getNodeName())) {
              return false;
          }
  
          if (getLocalName() == null) {
              if (arg.getLocalName() != null) {
                  return false;
              }
          }
          else if (!getLocalName().equals(arg.getLocalName())) {
              return false;
          }
  
          if (getNamespaceURI() == null) {
              if (arg.getNamespaceURI() != null) {
                  return false;
              }
          }
          else if (!getNamespaceURI().equals(arg.getNamespaceURI())) {
              return false;
          }
  
          if (getPrefix() == null) {
              if (arg.getPrefix() != null) {
                  return false;
              }
          }
          else if (!getPrefix().equals(arg.getPrefix())) {
              return false;
          }
  
          if (getNodeValue() == null) {
              if (arg.getNodeValue() != null) {
                  return false;
              }
          }
          else if (!getNodeValue().equals(arg.getNodeValue())) {
              return false;
          }
      /*
          if (getBaseURI() == null) {
              if (((NodeImpl) arg).getBaseURI() != null) {
                  return false;
              }
          }
          else if (!getBaseURI().equals(((NodeImpl) arg).getBaseURI())) {
              return false;
          }
  */
  
               return true;
      }
  
        /**
       * DOM Level 3 - Experimental:
       * Look up the namespace URI associated to the given prefix, starting from this node.
       * Use lookupNamespaceURI(null) to lookup the default namespace
       *
       * @param namespaceURI
       * @return th URI for the namespace
       * @since DOM Level 3
       */
      public String lookupNamespaceURI(String specifiedPrefix) {
          short type = this.getNodeType();
          switch (type) {
          case Node.ELEMENT_NODE : {
  
                  String namespace = this.getNamespaceURI();
                  String prefix = this.getPrefix();
                  if (namespace !=null) {
                      // REVISIT: is it possible that prefix is empty string?
                      if (specifiedPrefix== null && prefix==specifiedPrefix) {
                          // looking for default namespace
                          return namespace;
                      } else if (prefix != null && prefix.equals(specifiedPrefix)) {
                          // non default namespace
                          return namespace;
                      }
                  }
                  if (this.hasAttributes()) {
                      NamedNodeMap map = this.getAttributes();
                      int length = map.getLength();
                      for (int i=0;i<length;i++) {
                          Node attr = map.item(i);
                          String attrPrefix = attr.getPrefix();
                          String value = attr.getNodeValue();
                          namespace = attr.getNamespaceURI();
                          if (namespace !=null && namespace.equals("http://www.w3.org/2000/xmlns/")) {
                              // at this point we are dealing with DOM Level 2 nodes only
                              if (specifiedPrefix == null &&
                                  attr.getNodeName().equals("xmlns")) {
                                  // default namespace
                                  return value;
                              } else if (attrPrefix !=null &&
                                         attrPrefix.equals("xmlns") &&
                                         attr.getLocalName().equals(specifiedPrefix)) {
                   // non default namespace
                                  return value;
                              }
                          }
                      }
                  }
                  /*
                  NodeImpl ancestor = (NodeImpl)getElementAncestor(this);
                  if (ancestor != null) {
                      return ancestor.lookupNamespaceURI(specifiedPrefix);
                  }
                  */
  
                  return null;
  
  
              }
  /*
          case Node.DOCUMENT_NODE : {
                  return((NodeImpl)((Document)this).getDocumentElement()).lookupNamespaceURI(specifiedPrefix) ;
              }
  */
          case Node.ENTITY_NODE :
          case Node.NOTATION_NODE:
          case Node.DOCUMENT_FRAGMENT_NODE:
          case Node.DOCUMENT_TYPE_NODE:
              // type is unknown
              return null;
          case Node.ATTRIBUTE_NODE:{
                  if (this.getOwnerElement().getNodeType() == Node.ELEMENT_NODE) {
                      return getOwnerElement().lookupNamespaceURI(specifiedPrefix);
  
                  }
                  return null;
              }
          default:{
             /*
                  NodeImpl ancestor = (NodeImpl)getElementAncestor(this);
                  if (ancestor != null) {
                      return ancestor.lookupNamespaceURI(specifiedPrefix);
                  }
               */
                  return null;
              }
  
          }
      }
  
  
      /**
       *  DOM Level 3: Experimental
       *  This method checks if the specified <code>namespaceURI</code> is the
       *  default namespace or not.
       *  @param namespaceURI The namespace URI to look for.
       *  @return  <code>true</code> if the specified <code>namespaceURI</code>
       *   is the default namespace, <code>false</code> otherwise.
       * @since DOM Level 3
       */
      public boolean isDefaultNamespace(String namespaceURI){
         /*
          // REVISIT: remove casts when DOM L3 becomes REC.
          short type = this.getNodeType();
          switch (type) {
          case Node.ELEMENT_NODE: {
              String namespace = this.getNamespaceURI();
              String prefix = this.getPrefix();
  
              // REVISIT: is it possible that prefix is empty string?
              if (prefix == null || prefix.length() == 0) {
                  if (namespaceURI == null) {
                      return (namespace == namespaceURI);
                  }
                  return namespaceURI.equals(namespace);
              }
              if (this.hasAttributes()) {
                  ElementImpl elem = (ElementImpl)this;
                  NodeImpl attr = (NodeImpl)elem.getAttributeNodeNS("http://www.w3.org/2000/xmlns/", "xmlns");
                  if (attr != null) {
                      String value = attr.getNodeValue();
                      if (namespaceURI == null) {
                          return (namespace == value);
                      }
                      return namespaceURI.equals(value);
                  }
              }
  
              NodeImpl ancestor = (NodeImpl)getElementAncestor(this);
              if (ancestor != null) {
                  return ancestor.isDefaultNamespace(namespaceURI);
              }
              return false;
          }
          case Node.DOCUMENT_NODE:{
                  return((NodeImpl)((Document)this).getDocumentElement()).isDefaultNamespace(namespaceURI);
              }
  
          case Node.ENTITY_NODE :
            case Node.NOTATION_NODE:
          case Node.DOCUMENT_FRAGMENT_NODE:
          case Node.DOCUMENT_TYPE_NODE:
              // type is unknown
              return false;
          case Node.ATTRIBUTE_NODE:{
                  if (this.ownerNode.getNodeType() == Node.ELEMENT_NODE) {
                      return ownerNode.isDefaultNamespace(namespaceURI);
  
                  }
                  return false;
              }
          default:{
                  NodeImpl ancestor = (NodeImpl)getElementAncestor(this);
                  if (ancestor != null) {
                      return ancestor.isDefaultNamespace(namespaceURI);
                  }
                  return false;
              }
  
          }
  */
          return false;
  
  
      }
  
        /**
       *
       * DOM Level 3 - Experimental:
       * Look up the prefix associated to the given namespace URI, starting from this node.
       *
       * @param namespaceURI
       * @return the prefix for the namespace
       */
      public String lookupPrefix(String namespaceURI){
  
          // REVISIT: When Namespaces 1.1 comes out this may not be true
          // Prefix can't be bound to null namespace
          if (namespaceURI == null) {
              return null;
          }
  
          short type = this.getNodeType();
  
          switch (type) {
  /*
          case Node.ELEMENT_NODE: {
  
                  String namespace = this.getNamespaceURI(); // to flip out children
                  return lookupNamespacePrefix(namespaceURI, (ElementImpl)this);
              }
  
          case Node.DOCUMENT_NODE:{
                  return((NodeImpl)((Document)this).getDocumentElement()).lookupPrefix(namespaceURI);
              }
  */
          case Node.ENTITY_NODE :
          case Node.NOTATION_NODE:
          case Node.DOCUMENT_FRAGMENT_NODE:
          case Node.DOCUMENT_TYPE_NODE:
              // type is unknown
              return null;
          case Node.ATTRIBUTE_NODE:{
                  if (this.getOwnerElement().getNodeType() == Node.ELEMENT_NODE) {
                      return getOwnerElement().lookupPrefix(namespaceURI);
  
                  }
                  return null;
              }
          default:{
  /*
                  NodeImpl ancestor = (NodeImpl)getElementAncestor(this);
                  if (ancestor != null) {
                      return ancestor.lookupPrefix(namespaceURI);
                  }
  */
                  return null;
              }
           }
      }
  
       /**
       * Returns whether this node is the same node as the given one.
       * <br>This method provides a way to determine whether two
       * <code>Node</code> references returned by the implementation reference
       * the same object. When two <code>Node</code> references are references
       * to the same object, even if through a proxy, the references may be
       * used completely interchangably, such that all attributes have the
       * same values and calling the same DOM method on either reference
       * always has exactly the same effect.
       * @param other The node to test against.
       * @return Returns <code>true</code> if the nodes are the same,
       *   <code>false</code> otherwise.
       * @since DOM Level 3
       */
      public boolean isSameNode(Node other) {
          // we do not use any wrapper so the answer is obvious
          return this == other;
      }
  
        /**
       * This attribute returns the text content of this node and its
       * descendants. When it is defined to be null, setting it has no effect.
       * When set, any possible children this node may have are removed and
       * replaced by a single <code>Text</code> node containing the string
       * this attribute is set to. On getting, no serialization is performed,
       * the returned string does not contain any markup. No whitespace
       * normalization is performed, the returned string does not contain the
       * element content whitespaces . Similarly, on setting, no parsing is
       * performed either, the input string is taken as pure textual content.
       * <br>The string returned is made of the text content of this node
       * depending on its type, as defined below:
       * <table border='1'>
       * <tr>
       * <th>Node type</th>
       * <th>Content</th>
       * </tr>
       * <tr>
       * <td valign='top' rowspan='1' colspan='1'>
       * ELEMENT_NODE, ENTITY_NODE, ENTITY_REFERENCE_NODE,
       * DOCUMENT_FRAGMENT_NODE</td>
       * <td valign='top' rowspan='1' colspan='1'>concatenation of the <code>textContent</code>
       * attribute value of every child node, excluding COMMENT_NODE and
       * PROCESSING_INSTRUCTION_NODE nodes</td>
       * </tr>
       * <tr>
       * <td valign='top' rowspan='1' colspan='1'>ATTRIBUTE_NODE, TEXT_NODE,
       * CDATA_SECTION_NODE, COMMENT_NODE, PROCESSING_INSTRUCTION_NODE</td>
       * <td valign='top' rowspan='1' colspan='1'>
       * <code>nodeValue</code></td>
       * </tr>
       * <tr>
       * <td valign='top' rowspan='1' colspan='1'>DOCUMENT_NODE, DOCUMENT_TYPE_NODE, NOTATION_NODE</td>
       * <td valign='top' rowspan='1' colspan='1'>
       * null</td>
       * </tr>
       * </table>
       * @exception DOMException
       *   NO_MODIFICATION_ALLOWED_ERR: Raised when the node is readonly.
       * @exception DOMException
       *   DOMSTRING_SIZE_ERR: Raised when it would return more characters than
       *   fit in a <code>DOMString</code> variable on the implementation
       *   platform.
         * @since DOM Level 3
       */
      public void setTextContent(String textContent)
          throws DOMException {
          setNodeValue(textContent);
      }
      /**
       * This attribute returns the text content of this node and its
       * descendants. When it is defined to be null, setting it has no effect.
       * When set, any possible children this node may have are removed and
       * replaced by a single <code>Text</code> node containing the string
       * this attribute is set to. On getting, no serialization is performed,
       * the returned string does not contain any markup. No whitespace
       * normalization is performed, the returned string does not contain the
       * element content whitespaces . Similarly, on setting, no parsing is
       * performed either, the input string is taken as pure textual content.
       * <br>The string returned is made of the text content of this node
       * depending on its type, as defined below:
       * <table border='1'>
       * <tr>
       * <th>Node type</th>
       * <th>Content</th>
       * </tr>
       * <tr>
       * <td valign='top' rowspan='1' colspan='1'>
       * ELEMENT_NODE, ENTITY_NODE, ENTITY_REFERENCE_NODE,
       * DOCUMENT_FRAGMENT_NODE</td>
       * <td valign='top' rowspan='1' colspan='1'>concatenation of the <code>textContent</code>
       * attribute value of every child node, excluding COMMENT_NODE and
       * PROCESSING_INSTRUCTION_NODE nodes</td>
       * </tr>
       * <tr>
       * <td valign='top' rowspan='1' colspan='1'>ATTRIBUTE_NODE, TEXT_NODE,
       * CDATA_SECTION_NODE, COMMENT_NODE, PROCESSING_INSTRUCTION_NODE</td>
       * <td valign='top' rowspan='1' colspan='1'>
       * <code>nodeValue</code></td>
       * </tr>
       * <tr>
       * <td valign='top' rowspan='1' colspan='1'>DOCUMENT_NODE, DOCUMENT_TYPE_NODE, NOTATION_NODE</td>
       * <td valign='top' rowspan='1' colspan='1'>
       * null</td>
       * </tr>
       * </table>
       * @exception DOMException
       *   NO_MODIFICATION_ALLOWED_ERR: Raised when the node is readonly.
       * @exception DOMException
       *   DOMSTRING_SIZE_ERR: Raised when it would return more characters than
       *   fit in a <code>DOMString</code> variable on the implementation
       *   platform.
       * @since DOM Level 3
       */
      public String getTextContent() throws DOMException {
          return getNodeValue();  // overriden in some subclasses
      }
  
       /**
       * Compares a node with this node with regard to their position in the
       * document.
       * @param other The node to compare against this node.
       * @return Returns how the given node is positioned relatively to this
       *   node.
       * @since DOM Level 3
       */
      public short compareDocumentPosition(Node other) throws DOMException {
          return 0;
      }
  
       /**
       * The absolute base URI of this node or <code>null</code> if undefined.
       * This value is computed according to . However, when the
       * <code>Document</code> supports the feature "HTML" , the base URI is
       * computed using first the value of the href attribute of the HTML BASE
       * element if any, and the value of the <code>documentURI</code>
       * attribute from the <code>Document</code> interface otherwise.
       * <br> When the node is an <code>Element</code>, a <code>Document</code>
       * or a a <code>ProcessingInstruction</code>, this attribute represents
       * the properties [base URI] defined in . When the node is a
       * <code>Notation</code>, an <code>Entity</code>, or an
       * <code>EntityReference</code>, this attribute represents the
       * properties [declaration base URI] in the . How will this be affected
       * by resolution of relative namespace URIs issue?It's not.Should this
       * only be on Document, Element, ProcessingInstruction, Entity, and
       * Notation nodes, according to the infoset? If not, what is it equal to
       * on other nodes? Null? An empty string? I think it should be the
       * parent's.No.Should this be read-only and computed or and actual
       * read-write attribute?Read-only and computed (F2F 19 Jun 2000 and
       * teleconference 30 May 2001).If the base HTML element is not yet
       * attached to a document, does the insert change the Document.baseURI?
       * Yes. (F2F 26 Sep 2001)
       * @since DOM Level 3
       */
      public String getBaseURI() {
          return null;
      }
  
          /**
       * DOM Level 3 WD - Experimental.
       * Renaming node
       */
      public Node renameNode(Node n,
                             String namespaceURI,
                             String name)
                             throws DOMException{
          return n;
      }
  
  
      /**
       *  DOM Level 3 WD - Experimental
       *  Normalize document.
       */
      public void normalizeDocument(){
  
      }
      /**
       *  The configuration used when <code>Document.normalizeDocument</code> is
       * invoked.
       * @since DOM Level 3
       */
      public DOMConfiguration getDomConfig(){
         return null;
      }
  
  
      /**Experimental DOM Level 3 feature: documentURI */
      protected String fDocumentURI;
  
      /**
       * DOM Level 3 WD - Experimental.
       */
      public void setDocumentURI(String documentURI){
  
          fDocumentURI= documentURI;
      }
  
          /**
       * DOM Level 3 WD - Experimental.
       * The location of the document or <code>null</code> if undefined.
       * <br>Beware that when the <code>Document</code> supports the feature
       * "HTML" , the href attribute of the HTML BASE element takes precedence
       * over this attribute.
       * @since DOM Level 3
       */
      public String getDocumentURI(){
          return fDocumentURI;
      }
  
          /**Experimental DOM Level 3 feature: Document actualEncoding */
      protected String actualEncoding;
  
       /**
       * DOM Level 3 WD - Experimental.
       * An attribute specifying the actual encoding of this document. This is
       * <code>null</code> otherwise.
       * <br> This attribute represents the property [character encoding scheme]
       * defined in .
       * @since DOM Level 3
       */
      public String getActualEncoding() {
          return actualEncoding;
      }
  
      /**
       * DOM Level 3 WD - Experimental.
       * An attribute specifying the actual encoding of this document. This is
       * <code>null</code> otherwise.
       * <br> This attribute represents the property [character encoding scheme]
       * defined in .
       * @since DOM Level 3
       */
      public void setActualEncoding(String value) {
          actualEncoding = value;
      }
  
       /**
      * DOM Level 3 WD - Experimental.
      */
      public Text replaceWholeText(String content)
                                   throws DOMException{
  /*
  
          if (needsSyncData()) {
              synchronizeData();
          }
  
          // make sure we can make the replacement
          if (!canModify(nextSibling)) {
              throw new DOMException(DOMException.NO_MODIFICATION_ALLOWED_ERR,
                  DOMMessageFormatter.formatMessage(DOMMessageFormatter.DOM_DOMAIN, "NO_MODIFICATION_ALLOWED_ERR", null));
          }
  
          Node parent = this.getParentNode();
          if (content == null || content.length() == 0) {
              // remove current node
              if (parent !=null) { // check if node in the tree
                  parent.removeChild(this);
                  return null;
              }
          }
          Text currentNode = null;
          if (isReadOnly()){
              Text newNode = this.ownerDocument().createTextNode(content);
              if (parent !=null) { // check if node in the tree
                  parent.insertBefore(newNode, this);
                  parent.removeChild(this);
                  currentNode = newNode;
              } else {
                  return newNode;
              }
          }  else {
              this.setData(content);
              currentNode = this;
          }
          Node sibling =  currentNode.getNextSibling();
          while ( sibling !=null) {
              parent.removeChild(sibling);
              sibling = currentNode.getNextSibling();
          }
  
          return currentNode;
  */
          return null; //Pending
      }
  
       /**
       * DOM Level 3 WD - Experimental.
       * Returns all text of <code>Text</code> nodes logically-adjacent text
       * nodes to this node, concatenated in document order.
       * @since DOM Level 3
       */
      public String getWholeText(){
  
  /*
          if (needsSyncData()) {
              synchronizeData();
          }
          if (nextSibling == null) {
              return data;
          }
          StringBuffer buffer = new StringBuffer();
          if (data != null && data.length() != 0) {
              buffer.append(data);
          }
          getWholeText(nextSibling, buffer);
          return buffer.toString();
  */
          return null; // PENDING
  
      }
  
        /**
      * DOM Level 3 WD - Experimental.
       * Returns whether this text node contains whitespace in element content,
       * often abusively called "ignorable whitespace".
       */
      public boolean isWhitespaceInElementContent(){
          return false;
      }
  
  
  
  
       /**
       * NON-DOM: set the type of this attribute to be ID type.
       *
       * @param id
       */
      public void setIdAttribute(boolean id){
          //PENDING
      }
  
       /**
       * DOM Level 3: register the given attribute node as an ID attribute
       */
      public void setIdAttribute(String name, boolean makeId) {
          //PENDING
      }
  
  
      /**
       * DOM Level 3: register the given attribute node as an ID attribute
       */
      public void setIdAttributeNode(Attr at, boolean makeId) {
          //PENDING
      }
  
      /**
       * DOM Level 3: register the given attribute node as an ID attribute
       */
      public void setIdAttributeNS(String namespaceURI, String localName,
                                      boolean makeId) {
          //PENDING
      }
           /**
           * Method getSchemaTypeInfo.
           * @return TypeInfo
           */
      public TypeInfo getSchemaTypeInfo(){
        return null; //PENDING
      }
  
      public boolean isId() {
          return false; //PENDING
      }
  
      private String xmlEncoding;
      public String getXmlEncoding ( ) {
          return xmlEncoding;
      }
      public void setXmlEncoding ( String xmlEncoding ) {
          this.xmlEncoding = xmlEncoding;
      }
  
      private boolean xmlStandalone;
      public boolean getXmlStandalone() {
          return xmlStandalone;
      }
  
      public void setXmlStandalone(boolean xmlStandalone) throws DOMException {
          this.xmlStandalone = xmlStandalone;
      }
  
      private String xmlVersion;
      public String getXmlVersion() {
          return xmlVersion;
      }
  
      public void setXmlVersion(String xmlVersion) throws DOMException {
          this.xmlVersion = xmlVersion;
      }
  
  
  }
  