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
 * 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
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 *      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
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package org.apache.xerces.impl.dv.xs;

import org.apache.xerces.impl.dv.XSSimpleType;
import org.apache.xerces.util.SymbolHash;


the factory to create/return built-in schema 1.0 DVs and create user-defined DVs

Author:Neeraj Bajaj, Sun Microsystems, inc., Sandy Gao, IBM, Khaled Noaman, IBM
@xerces.internal
Version:$Id: SchemaDVFactoryImpl.java 710089 2008-11-03 16:01:16Z knoaman $
/**
 * the factory to create/return built-in schema 1.0 DVs and create user-defined DVs
 * 
 * @xerces.internal 
 *
 * @author Neeraj Bajaj, Sun Microsystems, inc.
 * @author Sandy Gao, IBM
 * @author Khaled Noaman, IBM
 *
 * @version $Id: SchemaDVFactoryImpl.java 710089 2008-11-03 16:01:16Z knoaman $
 */
public class SchemaDVFactoryImpl extends BaseSchemaDVFactory {

    static final SymbolHash fBuiltInTypes = new SymbolHash();
    
    static {
        createBuiltInTypes();
    }

    // create all built-in types
    static void createBuiltInTypes() {
    	createBuiltInTypes(fBuiltInTypes, XSSimpleTypeDecl.fAnySimpleType);
    	
        // TODO: move specific 1.0 DV implementation from base
    } //createBuiltInTypes()

    
Get a built-in simple type of the given name
REVISIT: its still not decided within the Schema WG how to define the
         ur-types and if all simple types should be derived from a
         complex type, so as of now we ignore the fact that anySimpleType
         is derived from anyType, and pass 'null' as the base of
         anySimpleType. It needs to be changed as per the decision taken.

Params:
  • name –  the name of the datatype
Returns:     the datatype validator of the given name
/**
     * Get a built-in simple type of the given name
     * REVISIT: its still not decided within the Schema WG how to define the
     *          ur-types and if all simple types should be derived from a
     *          complex type, so as of now we ignore the fact that anySimpleType
     *          is derived from anyType, and pass 'null' as the base of
     *          anySimpleType. It needs to be changed as per the decision taken.
     *
     * @param name  the name of the datatype
     * @return      the datatype validator of the given name
     */
    public XSSimpleType getBuiltInType(String name) {
        return (XSSimpleType)fBuiltInTypes.get(name);
    }

    
get all built-in simple types, which are stored in a hashtable keyed by
the name

Returns:     a hashtable which contains all built-in simple types
/**
     * get all built-in simple types, which are stored in a hashtable keyed by
     * the name
     *
     * @return      a hashtable which contains all built-in simple types
     */
    public SymbolHash getBuiltInTypes() {
        return (SymbolHash)fBuiltInTypes.makeClone();
    }

}//SchemaDVFactoryImpl