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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
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 * published by the Free Software Foundation.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
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package com.sun.xml.internal.stream.buffer;

import com.sun.xml.internal.stream.buffer.sax.SAXBufferProcessor;
import java.io.ByteArrayInputStream;
import javax.xml.transform.sax.SAXSource;
import org.xml.sax.InputSource;
import org.xml.sax.XMLReader;

A JAXP Source implementation that supports the parsing of XMLStreamBuffer for use by applications that expect a Source. 

The derivation of XMLStreamBufferSource from SAXSource is an implementation
detail.
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.

/**
 * A JAXP Source implementation that supports the parsing
 * of {@link XMLStreamBuffer} for use by applications that expect a Source.
 *
 * <p>
 * The derivation of XMLStreamBufferSource from SAXSource is an implementation
 * detail.
 *
 * <p>Applications shall obey the following restrictions:
 * <ul>
 * <li>The setXMLReader and setInputSource shall not be called.</li>
 * <li>The XMLReader object obtained by the getXMLReader method shall
 *     be used only for parsing the InputSource object returned by
 *     the getInputSource method.</li>
 * <li>The InputSource object obtained by the getInputSource method shall
 *     be used only for being parsed by the XMLReader object returned by
 *     the getXMLReader method.</li>
 * </ul>
 */
public class XMLStreamBufferSource extends SAXSource {
    protected XMLStreamBuffer _buffer;
    protected SAXBufferProcessor _bufferProcessor;

    
XMLStreamBufferSource constructor.
Params:
buffer – the XMLStreamBuffer to use./**
     * XMLStreamBufferSource constructor.
     *
     * @param buffer the {@link XMLStreamBuffer} to use.
     */
    public XMLStreamBufferSource(XMLStreamBuffer buffer) {
        super(new InputSource(
                new ByteArrayInputStream(new byte[0])));
        setXMLStreamBuffer(buffer);
    }

    
Get the XMLStreamBuffer that is used. 
Returns:
the XMLStreamBuffer./**
     * Get the {@link XMLStreamBuffer} that is used.
     *
     * @return the {@link XMLStreamBuffer}.
     */
    public XMLStreamBuffer getXMLStreamBuffer() {
        return _buffer;
    }

    
Set the XMLStreamBuffer to use. 
Params:
buffer – the XMLStreamBuffer./**
     * Set the {@link XMLStreamBuffer} to use.
     *
     * @param buffer the {@link XMLStreamBuffer}.
     */
    public void setXMLStreamBuffer(XMLStreamBuffer buffer) {
        if (buffer == null) {
            throw new NullPointerException("buffer cannot be null");
        }
        _buffer = buffer;

        if (_bufferProcessor != null) {
            _bufferProcessor.setBuffer(_buffer,false);
        }
    }

    public XMLReader getXMLReader() {
        if (_bufferProcessor == null) {
            _bufferProcessor = new SAXBufferProcessor(_buffer,false);
            setXMLReader(_bufferProcessor);
        } else if (super.getXMLReader() == null) {
            setXMLReader(_bufferProcessor);
        }

        return _bufferProcessor;
    }
}