/*

 * Copyright (c) 2000, 2005, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * 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.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

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 */

package javax.xml.transform.sax;

import javax.xml.transform.*;

import org.xml.sax.XMLFilter;

/**

 * This class extends TransformerFactory to provide SAX-specific

 * factory methods.  It provides two types of ContentHandlers,

 * one for creating Transformers, the other for creating Templates

 * objects.

 *

 * <p>If an application wants to set the ErrorHandler or EntityResolver

 * for an XMLReader used during a transformation, it should use a URIResolver

 * to return the SAXSource which provides (with getXMLReader) a reference to

 * the XMLReader.</p>

 *

 * @since 1.4

 */

public abstract class SAXTransformerFactory extends TransformerFactory {

    /** If {@link javax.xml.transform.TransformerFactory#getFeature}

     * returns true when passed this value as an argument,

     * the TransformerFactory returned from

     * {@link javax.xml.transform.TransformerFactory#newInstance} may

     * be safely cast to a SAXTransformerFactory.

     */

    public static final String FEATURE =

        "http://javax.xml.transform.sax.SAXTransformerFactory/feature";

    /** If {@link javax.xml.transform.TransformerFactory#getFeature}

     * returns true when passed this value as an argument,

     * the {@link #newXMLFilter(Source src)}

     * and {@link #newXMLFilter(Templates templates)} methods are supported.

     */

    public static final String FEATURE_XMLFILTER =

        "http://javax.xml.transform.sax.SAXTransformerFactory/feature/xmlfilter";

    /**

     * The default constructor is protected on purpose.

     */

    protected SAXTransformerFactory() {}

    /**

     * Get a TransformerHandler object that can process SAX

     * ContentHandler events into a Result, based on the transformation

     * instructions specified by the argument.

     *

     * @param src The Source of the transformation instructions.

     *

     * @return TransformerHandler ready to transform SAX events.

     *

     * @throws TransformerConfigurationException If for some reason the

     * TransformerHandler can not be created.

     */

    public abstract TransformerHandler newTransformerHandler(Source src)

        throws TransformerConfigurationException;

    /**

     * Get a TransformerHandler object that can process SAX

     * ContentHandler events into a Result, based on the Templates argument.

     *

     * @param templates The compiled transformation instructions.

     *

     * @return TransformerHandler ready to transform SAX events.

     *

     * @throws TransformerConfigurationException If for some reason the

     * TransformerHandler can not be created.

     */

    public abstract TransformerHandler newTransformerHandler(

        Templates templates) throws TransformerConfigurationException;

    /**

     * Get a TransformerHandler object that can process SAX

     * ContentHandler events into a Result. The transformation

     * is defined as an identity (or copy) transformation, for example

     * to copy a series of SAX parse events into a DOM tree.

     *

     * @return A non-null reference to a TransformerHandler, that may

     * be used as a ContentHandler for SAX parse events.

     *

     * @throws TransformerConfigurationException If for some reason the

     * TransformerHandler cannot be created.

     */

    public abstract TransformerHandler newTransformerHandler()

        throws TransformerConfigurationException;

    /**

     * Get a TemplatesHandler object that can process SAX

     * ContentHandler events into a Templates object.

     *

     * @return A non-null reference to a TransformerHandler, that may

     * be used as a ContentHandler for SAX parse events.

     *

     * @throws TransformerConfigurationException If for some reason the

     * TemplatesHandler cannot be created.

     */

    public abstract TemplatesHandler newTemplatesHandler()

        throws TransformerConfigurationException;

    /**

     * Create an XMLFilter that uses the given Source as the

     * transformation instructions.

     *

     * @param src The Source of the transformation instructions.

     *

     * @return An XMLFilter object, or null if this feature is not supported.

     *

     * @throws TransformerConfigurationException If for some reason the

     * TemplatesHandler cannot be created.

     */

    public abstract XMLFilter newXMLFilter(Source src)

        throws TransformerConfigurationException;

    /**

     * Create an XMLFilter, based on the Templates argument..

     *

     * @param templates The compiled transformation instructions.

     *

     * @return An XMLFilter object, or null if this feature is not supported.

     *

     * @throws TransformerConfigurationException If for some reason the

     * TemplatesHandler cannot be created.

     */

    public abstract XMLFilter newXMLFilter(Templates templates)

        throws TransformerConfigurationException;

}