/*
 * 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 org.apache.xerces.impl.xs.util;

import java.util.ArrayList;

import org.apache.xerces.impl.xs.SchemaGrammar;
import org.apache.xerces.impl.xs.XSModelImpl;
import org.apache.xerces.util.XMLGrammarPoolImpl;
import org.apache.xerces.xni.grammars.XMLGrammarDescription;
import org.apache.xerces.xs.XSModel;

/**
 * Add a method that return an <code>XSModel</code> that represents components in
 * the schema grammars in this pool implementation.
 * 
 * @xerces.internal  
 * 
 * @version $Id: XSGrammarPool.java 446723 2006-09-15 20:37:45Z mrglavas $
 */
public class XSGrammarPool extends XMLGrammarPoolImpl {
    /**
     * Return an <code>XSModel</code> that represents components in
     * the schema grammars in this pool implementation.
     *
     * @return  an <code>XSModel</code> representing this schema grammar
     */
    public XSModel toXSModel() {
        ArrayList list = new ArrayList();
        for (int i = 0; i < fGrammars.length; i++) {
            for (Entry entry = fGrammars[i] ; entry != null ; entry = entry.next) {
                if (entry.desc.getGrammarType().equals(XMLGrammarDescription.XML_SCHEMA))
                    list.add(entry.grammar);
            }
        }

        int size = list.size();
        if (size == 0) {
            return null;
        }
        SchemaGrammar[] gs = (SchemaGrammar[])list.toArray(new SchemaGrammar[size]);
        return new XSModelImpl(gs);
    }


} // class XSGrammarPool