/*
 * The Apache Software License, Version 1.1
 *
 *
 * Copyright (c) 2001 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
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 *       "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.
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 * 4. The name "Apache Software Foundation" must not be used to endorse or
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 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
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 */
package javax.xml.transform.sax;

import javax.xml.transform.Result;
import javax.xml.transform.Transformer;

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


/**
 * A TransformerHandler
 * listens for SAX ContentHandler parse events and transforms
 * them to a Result.
 */
public interface TransformerHandler
    extends ContentHandler, LexicalHandler, DTDHandler {

    /**
     * Enables the user of the TransformerHandler to set the
     * to set the Result for the transformation.
     *
     * @param result A Result instance, should not be null.
     *
     * @throws IllegalArgumentException if result is invalid for some reason.
     */
    public void setResult(Result result) throws IllegalArgumentException;

    /**
     * Set the base ID (URI or system ID) from where relative
     * URLs will be resolved.
     * @param systemID Base URI for the source tree.
     */
    public void setSystemId(String systemID);

    /**
     * Get the base ID (URI or system ID) from where relative
     * URLs will be resolved.
     * @return The systemID that was set with {@link #setSystemId}.
     */
    public String getSystemId();

    /**
     * Get the Transformer associated with this handler, which
     * is needed in order to set parameters and output properties.
     */
    public Transformer getTransformer();
}
