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/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright (c) 2004-2011 Oracle and/or its affiliates. All rights reserved.
 *
 * Oracle 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.jvnet.fastinfoset;

import java.io.InputStream;

import javax.xml.transform.sax.SAXSource;

import org.xml.sax.InputSource;
import org.xml.sax.XMLReader;

import com.sun.xml.fastinfoset.sax.SAXDocumentParser;

/**
 *  A JAXP Source implementation that supports the parsing fast
 *  infoset document for use by applications that expect a Source.
 *
 *  The derivation of FISource from SAXSource is an implementation
 *  detail.

 *
 *  
This implementation is designed for interoperation with JAXP and is not
 *  not designed with performance in mind. It is recommended that for performant
 *  interoperation alternative parser specific solutions be used.

 *
 *  
Applications shall obey the following restrictions:
 *   

 *     The setXMLReader and setInputSource shall not be called.
 *     The XMLReader object obtained by the getXMLReader method shall
 *        be used only for parsing the InputSource object returned by
 *        the getInputSource method.
 *     The InputSource object obtained by the getInputSource method shall 
 *        be used only for being parsed by the XMLReader object returned by 
 *        the getXMLReader method.
 *   
 *  
 */
public class FastInfosetSource extends SAXSource {
   
    public FastInfosetSource(InputStream inputStream) {
        super(new InputSource(inputStream));
    }

    public XMLReader getXMLReader() {
        XMLReader reader = super.getXMLReader();
        if (reader == null) {
            reader = new SAXDocumentParser();
            setXMLReader(reader);
        }
        ((SAXDocumentParser) reader).setInputStream(getInputStream());
        return reader;
    }
    
    public InputStream getInputStream() {
        return getInputSource().getByteStream();
    }
    
    public void setInputStream(InputStream inputStream) {
        setInputSource(new InputSource(inputStream));
    }
}