http://xml.apache.org/commons/components/external/: xml-commons provides an Apache-hosted set of DOM, SAX, and JAXP interfaces for use in other xml-based projects. Our hope is that we can standardize on both a common version and packaging scheme for these critical XML standards interfaces to make the lives of both our developers and users easier. The External Components portion of xml-commons contains interfaces that are defined by external standards organizations. For DOM, that's the W3C; for SAX it's David Megginson and sax.sourceforge.net; for JAXP it's Sun. 
/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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
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// $Id: XPathConstants.java 446598 2006-09-15 12:55:40Z jeremias $

package javax.xml.xpath;

import javax.xml.namespace.QName;


XPath constants.


Author:Norman Walsh, Jeff Suttor
See Also:
Version:$Revision: 446598 $, $Date: 2006-09-15 08:55:40 -0400 (Fri, 15 Sep 2006) $
Since:1.5
/**
 * <p>XPath constants.</p>
 *
 * @author <a href="mailto:Norman.Walsh@Sun.COM">Norman Walsh</a>
 * @author <a href="mailto:Jeff.Suttor@Sun.COM">Jeff Suttor</a>
 * @version $Revision: 446598 $, $Date: 2006-09-15 08:55:40 -0400 (Fri, 15 Sep 2006) $
 * @see <a href="http://www.w3.org/TR/xpath">XML Path Language (XPath) Version 1.0</a>
 * @since 1.5
 */
public class XPathConstants {
      
    
Private constructor to prevent instantiation.


/**
     * <p>Private constructor to prevent instantiation.</p>
     */
    private XPathConstants() { }
  
    
The XPath 1.0 number data type.


Maps to Java Double.


/**
     * <p>The XPath 1.0 number data type.</p>
     * 
     * <p>Maps to Java {@link Double}.</p>
     */
    public static final QName NUMBER = new QName("http://www.w3.org/1999/XSL/Transform", "NUMBER");

    
The XPath 1.0 string data type.


Maps to Java String.


/**
     * <p>The XPath 1.0 string data type.</p>
     * 
     * <p>Maps to Java {@link String}.</p>
     */
    public static final QName STRING = new QName("http://www.w3.org/1999/XSL/Transform", "STRING");

    
The XPath 1.0 boolean data type.


Maps to Java Boolean.


/**
     * <p>The XPath 1.0 boolean data type.</p>
     * 
     * <p>Maps to Java {@link Boolean}.</p>
     */
    public static final QName BOOLEAN = new QName("http://www.w3.org/1999/XSL/Transform", "BOOLEAN");

    
The XPath 1.0 NodeSet data type.


Maps to Java NodeList.


/**
     * <p>The XPath 1.0 NodeSet data type.</p>
     * 
     * <p>Maps to Java {@link org.w3c.dom.NodeList}.</p>
     */
    public static final QName NODESET = new QName("http://www.w3.org/1999/XSL/Transform", "NODESET");

    
The XPath 1.0 NodeSet data type.

Maps to Java Node.


/**
     * <p>The XPath 1.0 NodeSet data type.
     * 
     * <p>Maps to Java {@link org.w3c.dom.Node}.</p>
     */
    public static final QName NODE = new QName("http://www.w3.org/1999/XSL/Transform", "NODE");

    
The URI for the DOM object model, "http://java.sun.com/jaxp/xpath/dom".


/**
     * <p>The URI for the DOM object model, "http://java.sun.com/jaxp/xpath/dom".</p>
     */
    public static final String DOM_OBJECT_MODEL = "http://java.sun.com/jaxp/xpath/dom";
}