001    /* XMLConstants.java -- 
002       Copyright (C) 2004, 2005, 2006  Free Software Foundation, Inc.
003    
004    This file is part of GNU Classpath.
005    
006    GNU Classpath is free software; you can redistribute it and/or modify
007    it under the terms of the GNU General Public License as published by
008    the Free Software Foundation; either version 2, or (at your option)
009    any later version.
010    
011    GNU Classpath is distributed in the hope that it will be useful, but
012    WITHOUT ANY WARRANTY; without even the implied warranty of
013    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
014    General Public License for more details.
015    
016    You should have received a copy of the GNU General Public License
017    along with GNU Classpath; see the file COPYING.  If not, write to the
018    Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
019    02110-1301 USA.
020    
021    Linking this library statically or dynamically with other modules is
022    making a combined work based on this library.  Thus, the terms and
023    conditions of the GNU General Public License cover the whole
024    combination.
025    
026    As a special exception, the copyright holders of this library give you
027    permission to link this library with independent modules to produce an
028    executable, regardless of the license terms of these independent
029    modules, and to copy and distribute the resulting executable under
030    terms of your choice, provided that you also meet, for each linked
031    independent module, the terms and conditions of the license of that
032    module.  An independent module is a module which is not derived from
033    or based on this library.  If you modify this library, you may extend
034    this exception to your version of the library, but you are not
035    obligated to do so.  If you do not wish to do so, delete this
036    exception statement from your version. */
037    
038    package javax.xml;
039    
040    /**
041     * Repository for well-known XML constants.
042     *
043     * @author (a href='mailto:dog@gnu.org'>Chris Burdess</a)
044     * @since 1.5
045     */
046    public final class XMLConstants
047    {
048      
049      private XMLConstants()
050      {
051        // to prevent instantiation
052      }
053    
054      /**
055       * Dummy namespace URI indicating that there is no namespace.
056       * @see http://www.w3.org/TR/REC-xml-names/#defaulting
057       */
058      public static final String NULL_NS_URI = "";
059    
060      /**
061       * Dummy namespace prefix indicating that there is no namespace.
062       * @see http://www.w3.org/TR/REC-xml-names/#ns-qualnames
063       */
064      public static final String DEFAULT_NS_PREFIX = "";
065    
066      /**
067       * The XML Namespace URI.
068       * @see http://www.w3.org/TR/REC-xml-names/#ns-qualnames
069       */
070      public static final String XML_NS_URI =
071                    "http://www.w3.org/XML/1998/namespace";
072    
073      /**
074       * The XML Namespace prefix.
075       * @see http://www.w3.org/TR/REC-xml-names/#ns-qualnames
076       */
077      public static final String XML_NS_PREFIX = "xml";
078    
079      /**
080       * The XML Namespace declaration URI.
081       * @see http://www.w3.org/TR/REC-xml-names/#ns-qualnames
082       */
083      public static final String XMLNS_ATTRIBUTE_NS_URI =
084                    "http://www.w3.org/2000/xmlns/";
085    
086      /**
087       * The XML Namespace declaration attribute.
088       * @see http://www.w3.org/TR/REC-xml-names/#ns-qualnames
089       */
090      public static final String XMLNS_ATTRIBUTE = "xmlns";
091    
092      /**
093       * The XML Schema (XSD) namespace URI.
094       * @see http://www.w3.org/TR/xmlschema-1/#Instance_Document_Constructions
095       */
096      public static final String W3C_XML_SCHEMA_NS_URI =
097                    "http://www.w3.org/2001/XMLSchema";
098    
099      /**
100       * The XML Schema Instance (XSI) namespace URI.
101       * @see http://www.w3.org/TR/xmlschema-1/#Instance_Document_Constructions
102       */
103      public static final String W3C_XML_SCHEMA_INSTANCE_NS_URI =
104                    "http://www.w3.org/2001/XMLSchema-instance";
105    
106      /**
107       * The XPath 2.0 datatypes namespace URI.
108       * @see http://www.w3.org/TR/xpath-datamodel
109       */
110      public static final String W3C_XPATH_DATATYPE_NS_URI =
111                    "http://www.w3.org/2003/11/xpath-datatypes";
112    
113      /**
114       * The XML DTD namespace URI.
115       */
116      public static final String XML_DTD_NS_URI = "http://www.w3.org/TR/REC-xml";
117    
118      /**
119       * The RELAX NG Namespace URI.
120       * @see http://relaxng.org/spec-20011203.html
121       */
122      public static final String RELAXNG_NS_URI =
123                    "http://relaxng.org/ns/structure/1.0";
124    
125      /**
126       * DOM feature for secure processing.
127       */
128      public static final String FEATURE_SECURE_PROCESSING =
129                    "http://javax.xml.XMLConstants/feature/secure-processing";
130      
131    }