/*
 * The Apache Software License, Version 1.1
 *
 *
 * Copyright (c) 2000-2002 The Apache Software Foundation.  All rights 
 * reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer. 
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *
 * 3. The end-user documentation included with the redistribution,
 *    if any, must include the following acknowledgment:  
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowledgment may appear in the software itself,
 *    if and wherever such third-party acknowledgments normally appear.
 *
 * 4. The names "Xerces" and "Apache Software Foundation" must
 *    not be used to endorse or promote products derived from this
 *    software without prior written permission. For written 
 *    permission, please contact apache@apache.org.
 *
 * 5. Products derived from this software may not be called "Apache",
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 *
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 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation and was
 * originally based on software copyright (c) 1999, International
 * Business Machines, Inc., http://www.apache.org.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 */

package com.sun.org.apache.xerces.internal.xni.grammars;

import com.sun.org.apache.xerces.internal.xni.XMLResourceIdentifier;

/**
 * <p> This interface describes basic attributes of XML grammars--their
 * physical location and their type. </p>
 *
 * @author Neil Graham, IBM
 * @version $Id: XMLGrammarDescription.java,v 1.6 2003/11/14 16:54:05 mrglavas Exp $
 */
public interface XMLGrammarDescription extends XMLResourceIdentifier {

    // initial set of grammar constants that some configurations will recognize;user
    // components which create and/or recognize other types of grammars may
    // certainly use their own constants in place of these (so long as
    // their Grammar objects implement this interface).

    /**
     * The grammar type constant for XML Schema grammars. When getGrammarType()
     * method returns this constant, the object should be an instance of
     * the XMLSchemaDescription interface.
     */
    public static final String XML_SCHEMA = "http://www.w3.org/2001/XMLSchema";
    
    /**
     * The grammar type constant for DTD grammars. When getGrammarType()
     * method returns this constant, the object should be an instance of
     * the XMLDTDDescription interface.
     */
    public static final String XML_DTD = "http://www.w3.org/TR/REC-xml";

    /**
     * Return the type of this grammar.
     * 
     * @return  the type of this grammar
     */
    public String getGrammarType();

} // interface XMLGrammarDescription