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/*
* reserved comment block
* DO NOT REMOVE OR ALTER!
*/
/*
* Copyright 2001, 2002,2004 The Apache Software Foundation.
*
* Licensed 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.
*/
package com.sun.org.apache.xerces.internal.impl.dv;
import java.util.Hashtable;
import com.sun.org.apache.xerces.internal.utils.ObjectFactory;
/**
* The factory to create and return DTD types. The implementation should
* store the created datatypes in static data, so that they can be shared by
* multiple parser instance, and multiple threads.
*
* @xerces.internal
*
* @author Sandy Gao, IBM
*
* @version $Id: DTDDVFactory.java,v 1.6 2010-11-01 04:39:43 joehw Exp $
*/
public abstract class DTDDVFactory {
private static final String DEFAULT_FACTORY_CLASS = "com.sun.org.apache.xerces.internal.impl.dv.dtd.DTDDVFactoryImpl";
/**
* Get an instance of the default DTDDVFactory implementation.
*
* @return an instance of DTDDVFactory implementation
* @exception DVFactoryException cannot create an instance of the specified
* class name or the default class name
*/
public static final DTDDVFactory getInstance() throws DVFactoryException {
return getInstance(DEFAULT_FACTORY_CLASS);
}
/**
* Get an instance of DTDDVFactory implementation.
*
* @param factoryClass name of the implementation to load.
* @return an instance of DTDDVFactory implementation
* @exception DVFactoryException cannot create an instance of the specified
* class name or the default class name
*/
public static final DTDDVFactory getInstance(String factoryClass) throws DVFactoryException {
try {
// if the class name is not specified, use the default one
return (DTDDVFactory)
(ObjectFactory.newInstance(factoryClass, true));
}
catch (ClassCastException e) {
throw new DVFactoryException("DTD factory class " + factoryClass + " does not extend from DTDDVFactory.");
}
}
// can't create a new object of this class
protected DTDDVFactory() {}
/**
* return a dtd type of the given name
*
* @param name the name of the datatype
* @return the datatype validator of the given name
*/
public abstract DatatypeValidator getBuiltInDV(String name);
/**
* get all built-in DVs, which are stored in a hashtable keyed by the name
*
* @return a hashtable which contains all datatypes
*/
public abstract Hashtable getBuiltInTypes();
}
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