non-releases/trunk_before_flattening/src/java/org/apache/cocoon/components/sax/XMLByteStreamFragment.java

/*
 * Copyright 1999-2004 The Apache Software Foundation.
 *
 * Licensed 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.cocoon.components.sax;

import org.apache.cocoon.xml.AbstractSAXFragment;
import org.apache.cocoon.xml.EmbeddedXMLPipe;
import org.xml.sax.ContentHandler;
import org.xml.sax.SAXException;

/**
 * An XMLByteStream wrapped by an XMLFragment implementation. This allows to
 * store SAX events and insert them in an XSP result using <xsp:expr>.
 *
 * @version $Id$
 */
public class XMLByteStreamFragment extends AbstractSAXFragment {

    /** The XML byte stream */
    private Object xmlBytes;

    /**
     * Creates a new <code>XMLByteStreamFragment</code> defined by the given
     * XML byte stream.
     *
     * @param bytes the XML byte stream representing the document fragment
     */
    public XMLByteStreamFragment(Object bytes) {
        this.xmlBytes = bytes;
    }

    /**
     * Output the fragment. If the fragment is a document, start/endDocument
     * events are discarded.
     */
    public void toSAX(ContentHandler ch) throws SAXException {
        // Stream bytes and discard start/endDocument
        XMLByteStreamInterpreter deserializer = new XMLByteStreamInterpreter();
        deserializer.setContentHandler(new EmbeddedXMLPipe(ch));
        deserializer.deserialize(this.xmlBytes);
    }
}