/*

 * Copyright (c) 2017, Oracle and/or its affiliates. All rights reserved.

 */

/*

 * 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

 *

 *      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.jaxp.validation;

import com.sun.org.apache.xerces.internal.xni.grammars.Grammar;

import com.sun.org.apache.xerces.internal.xni.grammars.XMLGrammarDescription;

import com.sun.org.apache.xerces.internal.xni.grammars.XMLGrammarPool;

/**

 * <p>Implementation of Schema for W3C XML Schemas which

 * contains schema components from one target namespace.</p>

 *

 * @author Michael Glavassevich, IBM

 * @LastModified: Nov 2017

 */

final class SimpleXMLSchema extends AbstractXMLSchema implements XMLGrammarPool {

    /** Zero length grammar array. */

    private static final Grammar [] ZERO_LENGTH_GRAMMAR_ARRAY = new Grammar [0];

    private Grammar fGrammar;

    private Grammar[] fGrammars;

    private XMLGrammarDescription fGrammarDescription;

    public SimpleXMLSchema(Grammar grammar) {

        fGrammar = grammar;

        fGrammars = new Grammar[] {grammar};

        fGrammarDescription = grammar.getGrammarDescription();

    }

    /*

     * XMLGrammarPool methods

     */

    public Grammar[] retrieveInitialGrammarSet(String grammarType) {

        return XMLGrammarDescription.XML_SCHEMA.equals(grammarType) ?

                fGrammars.clone() : ZERO_LENGTH_GRAMMAR_ARRAY;

    }

    public void cacheGrammars(String grammarType, Grammar[] grammars) {}

    public Grammar retrieveGrammar(XMLGrammarDescription desc) {

        return fGrammarDescription.equals(desc) ? fGrammar : null;

    }

    public void lockPool() {}

    public void unlockPool() {}

    public void clear() {}

    /*

     * XSGrammarPoolContainer methods

     */

    public XMLGrammarPool getGrammarPool() {

        return this;

    }

    public boolean isFullyComposed() {

        return true;

    }

} // SimpleXMLSchema