286N/A * reserved comment block 286N/A * DO NOT REMOVE OR ALTER! 286N/A * Copyright 2000-2002,2004 The Apache Software Foundation. 286N/A * Licensed under the Apache License, Version 2.0 (the "License"); 286N/A * you may not use this file except in compliance with the License. 286N/A * You may obtain a copy of the License at 286N/A * Unless required by applicable law or agreed to in writing, software 286N/A * distributed under the License is distributed on an "AS IS" BASIS, 286N/A * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 286N/A * See the License for the specific language governing permissions and 286N/A * limitations under the License. 286N/A * A generic grammar for use in validating XML documents. The Grammar 286N/A * object stores the validation information in a compiled form. Specific 286N/A * subclasses extend this class and "populate" the grammar by compiling 286N/A * the specific syntax (DTD, Schema, etc) into the data structures used 286N/A * <strong>Note:</strong> The Grammar object is not useful as a generic 286N/A * grammar access or query object. In other words, you cannot round-trip 286N/A * specific grammar syntaxes with the compiled grammar information in 286N/A * the Grammar object. You <em>can</em> create equivalent validation 286N/A * rules in your choice of grammar syntax but there is no guarantee that 286N/A * the input and output will be the same. 286N/A * <p> Right now, this class is largely a shell; eventually, 286N/A * it will be enriched by having more expressive methods added. </p> 286N/A * will be moved from dtd.Grammar here. 286N/A * @author Jeffrey Rodriguez, IBM 286N/A * @author Andy Clark, IBM 286N/A * @author Neil Graham, IBM 286N/A * get the <code>XMLGrammarDescription</code> associated with this