1 /* 2 * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved. 3 */ 4 /* 5 * Licensed to the Apache Software Foundation (ASF) under one or more 6 * contributor license agreements. See the NOTICE file distributed with 7 * this work for additional information regarding copyright ownership. 8 * The ASF licenses this file to You under the Apache License, Version 2.0 9 * (the "License"); you may not use this file except in compliance with 10 * the License. You may obtain a copy of the License at 11 * 12 * http://www.apache.org/licenses/LICENSE-2.0 13 * 14 * Unless required by applicable law or agreed to in writing, software 15 * distributed under the License is distributed on an "AS IS" BASIS, 16 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 17 * See the License for the specific language governing permissions and 18 * limitations under the License. 19 */ 20 21 package com.sun.org.apache.xerces.internal.impl.dv; 22 23 import com.sun.org.apache.xerces.internal.impl.dv.dtd.DTDDVFactoryImpl; 24 import com.sun.org.apache.xerces.internal.impl.dv.dtd.XML11DTDDVFactoryImpl; 25 import com.sun.org.apache.xerces.internal.utils.ObjectFactory; 26 import java.util.Map; 27 28 /** 29 * The factory to create and return DTD types. The implementation should 30 * store the created datatypes in static data, so that they can be shared by 31 * multiple parser instance, and multiple threads. 32 * 33 * @xerces.internal 34 * 35 * @author Sandy Gao, IBM 36 * 37 */ 38 public abstract class DTDDVFactory { 39 40 private static final String DEFAULT_FACTORY_CLASS = 41 "com.sun.org.apache.xerces.internal.impl.dv.dtd.DTDDVFactoryImpl"; 42 43 private static final String XML11_DATATYPE_VALIDATOR_FACTORY = 44 "com.sun.org.apache.xerces.internal.impl.dv.dtd.XML11DTDDVFactoryImpl"; 45 46 /** 47 * Get an instance of the default DTDDVFactory implementation. 48 * 49 * @return an instance of DTDDVFactory implementation 50 * @exception DVFactoryException cannot create an instance of the specified 51 * class name or the default class name 52 */ 53 public static final DTDDVFactory getInstance() throws DVFactoryException { 54 return getInstance(DEFAULT_FACTORY_CLASS); 55 } 56 57 /** 58 * Get an instance of DTDDVFactory implementation. 59 * 60 * @param factoryClass name of the implementation to load. 61 * @return an instance of DTDDVFactory implementation 62 * @exception DVFactoryException cannot create an instance of the specified 63 * class name or the default class name 64 */ 65 public static final DTDDVFactory getInstance(String factoryClass) throws DVFactoryException { 66 try { 67 if (DEFAULT_FACTORY_CLASS.equals(factoryClass)) { 68 return new DTDDVFactoryImpl(); 69 } else if (XML11_DATATYPE_VALIDATOR_FACTORY.equals(factoryClass)) { 70 return new XML11DTDDVFactoryImpl(); 71 } else { 72 //fall back for compatibility 73 return (DTDDVFactory) 74 (ObjectFactory.newInstance(factoryClass, true)); 75 } 76 } 77 catch (ClassCastException e) { 78 throw new DVFactoryException("DTD factory class " + factoryClass + " does not extend from DTDDVFactory."); 79 } 80 } 81 82 // can't create a new object of this class 83 protected DTDDVFactory() {} 84 85 /** 86 * return a dtd type of the given name 87 * 88 * @param name the name of the datatype 89 * @return the datatype validator of the given name 90 */ 91 public abstract DatatypeValidator getBuiltInDV(String name); 92 93 /** 94 * get all built-in DVs, which are stored in a map keyed by the name 95 * 96 * @return a map which contains all datatypes 97 */ 98 public abstract Map<String, DatatypeValidator> getBuiltInTypes(); 99 100 }