/*
 * The Apache Software License, Version 1.1
 *
 *
 * Copyright (c) 1999 The Apache Software Foundation.  All rights 
 * reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer. 
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *
 * 3. The end-user documentation included with the redistribution,
 *    if any, must include the following acknowledgment:  
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowledgment may appear in the software itself,
 *    if and wherever such third-party acknowledgments normally appear.
 *
 * 4. The names "Xalan" and "Apache Software Foundation" must
 *    not be used to endorse or promote products derived from this
 *    software without prior written permission. For written 
 *    permission, please contact apache@apache.org.
 *
 * 5. Products derived from this software may not be called "Apache",
 *    nor may "Apache" appear in their name, without prior written
 *    permission of the Apache Software Foundation.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation and was
 * originally based on software copyright (c) 1999, Lotus
 * Development Corporation., http://www.lotus.com.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 */
/**
 * $Id: SAXResult.java,v 1.9 2001/01/05 18:27:17 sboag Exp $
 */
package javax.xml.transform.sax;

import javax.xml.transform.*;

import java.lang.String;

import java.io.OutputStream;
import java.io.Writer;

import org.xml.sax.ContentHandler;
import org.xml.sax.ext.DeclHandler;
import org.xml.sax.ext.LexicalHandler;


/**
 * Acts as an holder for a transformation Result.
 */
public class SAXResult implements Result {

    /** If {@link javax.xml.transform.TransformerFactory#getFeature}
     * returns true when passed this value as an argument,
     * the Transformer supports Result output of this type.
     */
    public static final String FEATURE =
        "http://javax.xml.transform.sax.SAXResult/feature";

    /**
     * Zero-argument default constructor.
     */
    public SAXResult() {}

    /**
     * Create a SAXResult that targets a SAX2 ContentHandler.
     *
     * @param handler Must be a non-null ContentHandler reference.
     */
    public SAXResult(ContentHandler handler) {
        setHandler(handler);
    }

    /**
     * Set the target to be a SAX2 ContentHandler.
     *
     * @param handler Must be a non-null ContentHandler reference.
     */
    public void setHandler(ContentHandler handler) {
        this.handler = handler;
    }

    /**
     * Get the ContentHandler that is the Result.
     *
     * @return The ContentHandler that is to be transformation output.
     */
    public ContentHandler getHandler() {
        return handler;
    }

    /**
     * Set the SAX2 LexicalHandler for the output.
     *
     * <p>This is needed to handle XML comments and the like.  If the
     * lexical handler is not set, an attempt should be made by the
     * transformer to cast the ContentHandler to a LexicalHandler.</p>
     *
     * @param handler A non-null LexicalHandler for
     * handling lexical parse events.
     */
    public void setLexicalHandler(LexicalHandler handler) {
        this.lexhandler = handler;
    }

    /**
     * Get a SAX2 LexicalHandler for the output.
     *
     * @return A LexicalHandler, or null.
     */
    public LexicalHandler getLexicalHandler() {
        return lexhandler;
    }

    /**
     * Method setSystemId Set the systemID that may be used in association
     * with the ContentHandler.
     *
     * @param systemId The system identifier as a URI string.
     */
    public void setSystemId(String systemId) {
        this.systemId = systemId;
    }

    /**
     * Get the system identifier that was set with setSystemId.
     *
     * @return The system identifier that was set with setSystemId, or null
     * if setSystemId was not called.
     */
    public String getSystemId() {
        return systemId;
    }

    //////////////////////////////////////////////////////////////////////
    // Internal state.
    //////////////////////////////////////////////////////////////////////

    /**
     * The handler for parse events.
     */
    private ContentHandler handler;

    /**
     * The handler for lexical events.
     */
    private LexicalHandler lexhandler;

    /**
     * The systemID that may be used in association
     * with the node.
     */
    private String systemId;
}