http://xml.apache.org/commons/components/external/: xml-commons provides an Apache-hosted set of DOM, SAX, and JAXP interfaces for use in other xml-based projects. Our hope is that we can standardize on both a common version and packaging scheme for these critical XML standards interfaces to make the lives of both our developers and users easier. The External Components portion of xml-commons contains interfaces that are defined by external standards organizations. For DOM, that's the W3C; for SAX it's David Megginson and sax.sourceforge.net; for JAXP it's Sun. 
/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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.
 */

// $Id: SAXTransformerFactory.java 446598 2006-09-15 12:55:40Z jeremias $

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.

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.


/**
 * 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>
 */
public abstract class SAXTransformerFactory extends TransformerFactory {

    
If TransformerFactory.getFeature returns true when passed this value as an argument, the TransformerFactory returned from TransformerFactory.newInstance may be safely cast to a SAXTransformerFactory. 
/** 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 TransformerFactory.getFeature returns true when passed this value as an argument, the newXMLFilter(Source src) and newXMLFilter(Templates templates) methods are supported. 
/** 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.

/**
     * 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.

Params:
  • src – The Source of the transformation instructions.
Throws:
Returns:TransformerHandler ready to transform SAX events.
/**
     * 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.

Params:
  • templates – The compiled transformation instructions.
Throws:
Returns:TransformerHandler ready to transform SAX events.
/**
     * 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.

Throws:
Returns:A non-null reference to a TransformerHandler, that may
be used as a ContentHandler for SAX parse events.
/**
     * 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.

Throws:
Returns:A non-null reference to a TransformerHandler, that may
be used as a ContentHandler for SAX parse events.
/**
     * 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.

Params:
  • src – The Source of the transformation instructions.
Throws:
Returns:An XMLFilter object, or null if this feature is not supported.
/**
     * 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..

Params:
  • templates – The compiled transformation instructions.
Throws:
Returns:An XMLFilter object, or null if this feature is not supported.
/**
     * 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;
}