https://xerces.apache.org/xerces2-j/: Xerces2 is the next generation of high performance, fully compliant XML parsers in the Apache Xerces family. This new version of Xerces introduces the Xerces Native Interface (XNI), a complete framework for building parser components and configurations that is extremely modular and easy to program. The Apache Xerces2 parser is the reference implementation of XNI but other parser components, configurations, and parsers can be written using the Xerces Native Interface. For complete design and implementation documents, refer to the XNI Manual. Xerces2 is a fully conforming XML Schema 1.0 processor. A partial experimental implementation of the XML Schema 1.1 Structures and Datatypes Working Drafts (December 2009) and an experimental implementation of the XML Schema Definition Language (XSD): Component Designators (SCD) Candidate Recommendation (January 2010) are provided for evaluation. For more information, refer to the XML Schema page. Xerces2 also provides a complete implementation of the Document Object Model Level 3 Core and Load/Save W3C Recommendations and provides a complete implementation of the XML Inclusions (XInclude) W3C Recommendation. It also provides support for OASIS XML Catalogs v1.1. Xerces2 is able to parse documents written according to the XML 1.1 Recommendation, except that it does not yet provide an option to enable normalization checking as described in section 2.13 of this specification. It also handles namespaces according to the XML Namespaces 1.1 Recommendation, and will correctly serialize XML 1.1 documents if the DOM level 3 load/save APIs are in use. 
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 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
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 * The ASF licenses this file to You under the Apache License, Version 2.0
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 *      http://www.apache.org/licenses/LICENSE-2.0
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package org.apache.xerces.xni.grammars;

import org.apache.xerces.xni.XMLResourceIdentifier;


 This interface describes basic attributes of XML grammars--their
physical location and their type. 


Author:Neil Graham, IBM
Version:$Id: XMLGrammarDescription.java 447245 2006-09-18 05:22:10Z mrglavas $
/**
 * <p> This interface describes basic attributes of XML grammars--their
 * physical location and their type. </p>
 *
 * @author Neil Graham, IBM
 * @version $Id: XMLGrammarDescription.java 447245 2006-09-18 05:22:10Z mrglavas $
 */
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.

/**
     * 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.

/**
     * 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.

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

} // interface XMLGrammarDescription