/* XMLConstants.java --
   Copyright (C) 2004, 2005, 2006  Free Software Foundation, Inc.

This file is part of GNU Classpath.

GNU Classpath is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
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General Public License for more details.

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02110-1301 USA.

Linking this library statically or dynamically with other modules is
making a combined work based on this library.  Thus, the terms and
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As a special exception, the copyright holders of this library give you
permission to link this library with independent modules to produce an
executable, regardless of the license terms of these independent
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package javax.xml;

/**
 * Repository for well-known XML constants.
 *
 * @author (a href='mailto:dog@gnu.org'>Chris Burdess</a)
 * @since 1.5
 */
public final class XMLConstants
{

  private XMLConstants()
  {
    // to prevent instantiation
  }

  /**
   * Dummy namespace URI indicating that there is no namespace.
   * @see http://www.w3.org/TR/REC-xml-names/#defaulting
   */
  public static final String NULL_NS_URI = "";

  /**
   * Dummy namespace prefix indicating that there is no namespace.
   * @see http://www.w3.org/TR/REC-xml-names/#ns-qualnames
   */
  public static final String DEFAULT_NS_PREFIX = "";

  /**
   * The XML Namespace URI.
   * @see http://www.w3.org/TR/REC-xml-names/#ns-qualnames
   */
  public static final String XML_NS_URI =
                "http://www.w3.org/XML/1998/namespace";

  /**
   * The XML Namespace prefix.
   * @see http://www.w3.org/TR/REC-xml-names/#ns-qualnames
   */
  public static final String XML_NS_PREFIX = "xml";

  /**
   * The XML Namespace declaration URI.
   * @see http://www.w3.org/TR/REC-xml-names/#ns-qualnames
   */
  public static final String XMLNS_ATTRIBUTE_NS_URI =
                "http://www.w3.org/2000/xmlns/";

  /**
   * The XML Namespace declaration attribute.
   * @see http://www.w3.org/TR/REC-xml-names/#ns-qualnames
   */
  public static final String XMLNS_ATTRIBUTE = "xmlns";

  /**
   * The XML Schema (XSD) namespace URI.
   * @see http://www.w3.org/TR/xmlschema-1/#Instance_Document_Constructions
   */
  public static final String W3C_XML_SCHEMA_NS_URI =
                "http://www.w3.org/2001/XMLSchema";

  /**
   * The XML Schema Instance (XSI) namespace URI.
   * @see http://www.w3.org/TR/xmlschema-1/#Instance_Document_Constructions
   */
  public static final String W3C_XML_SCHEMA_INSTANCE_NS_URI =
                "http://www.w3.org/2001/XMLSchema-instance";

  /**
   * The XPath 2.0 datatypes namespace URI.
   * @see http://www.w3.org/TR/xpath-datamodel
   */
  public static final String W3C_XPATH_DATATYPE_NS_URI =
                "http://www.w3.org/2003/11/xpath-datatypes";

  /**
   * The XML DTD namespace URI.
   */
  public static final String XML_DTD_NS_URI = "http://www.w3.org/TR/REC-xml";

  /**
   * The RELAX NG Namespace URI.
   * @see http://relaxng.org/spec-20011203.html
   */
  public static final String RELAXNG_NS_URI =
                "http://relaxng.org/ns/structure/1.0";

  /**
   * DOM feature for secure processing.
   */
  public static final String FEATURE_SECURE_PROCESSING =
                "http://javax.xml.XMLConstants/feature/secure-processing";

}