code: /*
   * 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
   * limitations under the License.
   */
  /*
   * $Id$
   */
  package org.apache.xml.utils;
  
  /**
   * Primary constants used by the XSLT Processor
   * @xsl.usage advanced
   */
  public class Constants
  {
  
    /** 
     * Mnemonics for standard XML Namespace URIs, as Java Strings:
     * <ul>
     * <li>S_XMLNAMESPACEURI (http://www.w3.org/XML/1998/namespace) is the
     * URI permanantly assigned to the "xml:" prefix. This is used for some
     * features built into the XML specification itself, such as xml:space 
     * and xml:lang. It was defined by the W3C's XML Namespaces spec.</li>
     * <li>S_XSLNAMESPACEURL (http://www.w3.org/1999/XSL/Transform) is the
     * URI which indicates that a name may be an XSLT directive. In most
     * XSLT stylesheets, this is bound to the "xsl:" prefix. It's defined
     * by the W3C's XSLT Recommendation.</li>
     * <li>S_OLDXSLNAMESPACEURL (http://www.w3.org/XSL/Transform/1.0) was
     * used in early prototypes of XSLT processors for much the same purpose
     * as S_XSLNAMESPACEURL. It is now considered obsolete, and the version
     * of XSLT which it signified is not fully compatable with the final
     * XSLT Recommendation, so what it really signifies is a badly obsolete
     * stylesheet.</li>
     * </ul> */
    public static final String 
  	S_XMLNAMESPACEURI = "http://www.w3.org/XML/1998/namespace", 
  	S_XSLNAMESPACEURL = "http://www.w3.org/1999/XSL/Transform", 
  	S_OLDXSLNAMESPACEURL = "http://www.w3.org/XSL/Transform/1.0";
  
    /** Authorship mnemonics, as Java Strings. Not standardized, 
     * as far as I know.
     * <ul>
     * <li>S_VENDOR -- the name of the organization/individual who published
     * this XSLT processor. </li>
     * <li>S_VENDORURL -- URL where one can attempt to retrieve more
     * information about this publisher and product.</li>
     * </ul>
     */
    public static final String 
  	S_VENDOR = "Apache Software Foundation", 
  	S_VENDORURL = "http://xml.apache.org";
  
    /** S_BUILTIN_EXTENSIONS_URL is a mnemonic for the XML Namespace 
     *(http://xml.apache.org/xalan) predefined to signify Xalan's
     * built-in XSLT Extensions. When used in stylesheets, this is often 
     * bound to the "xalan:" prefix.
     */
    public static final String 
      S_BUILTIN_EXTENSIONS_URL = "http://xml.apache.org/xalan"; 
  
    /**
     * The old built-in extension url. It is still supported for
     * backward compatibility.
     */
    public static final String 
      S_BUILTIN_OLD_EXTENSIONS_URL = "http://xml.apache.org/xslt"; 
    
    /**
     * Xalan extension namespaces.
     */
    public static final String 
      // The old namespace for Java extension
      S_EXTENSIONS_OLD_JAVA_URL = "http://xml.apache.org/xslt/java",
      // The new namespace for Java extension
      S_EXTENSIONS_JAVA_URL = "http://xml.apache.org/xalan/java",
      S_EXTENSIONS_LOTUSXSL_JAVA_URL = "http://xsl.lotus.com/java",
      S_EXTENSIONS_XALANLIB_URL = "http://xml.apache.org/xalan",
      S_EXTENSIONS_REDIRECT_URL = "http://xml.apache.org/xalan/redirect",
      S_EXTENSIONS_PIPE_URL = "http://xml.apache.org/xalan/PipeDocument",
      S_EXTENSIONS_SQL_URL = "http://xml.apache.org/xalan/sql";
    
    /**
     * EXSLT extension namespaces.
     */
    public static final String
      S_EXSLT_COMMON_URL = "http://exslt.org/common",
      S_EXSLT_MATH_URL = "http://exslt.org/math",
      S_EXSLT_SETS_URL = "http://exslt.org/sets",
      S_EXSLT_DATETIME_URL = "http://exslt.org/dates-and-times",
      S_EXSLT_FUNCTIONS_URL = "http://exslt.org/functions",
      S_EXSLT_DYNAMIC_URL = "http://exslt.org/dynamic",
      S_EXSLT_STRINGS_URL = "http://exslt.org/strings";
      
      
    /**
     * The minimum version of XSLT supported by this processor.
     */
    public static final double XSLTVERSUPPORTED = 1.0;
  }
  