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: Templates.java 570103 2007-08-27 13:24:55Z mrglavas $

package javax.xml.transform;

import java.util.Properties;


An object that implements this interface is the runtime representation of processed
transformation instructions.

Templates must be thread-safe for a given instance
over multiple threads running concurrently, and may
be used multiple times in a given session.


/**
 * An object that implements this interface is the runtime representation of processed
 * transformation instructions.
 *
 * <p>Templates must be thread-safe for a given instance
 * over multiple threads running concurrently, and may
 * be used multiple times in a given session.</p>
 */
public interface Templates {

    
Create a new transformation context for this Templates object.

Throws:
Returns:A valid non-null instance of a Transformer.
/**
     * Create a new transformation context for this Templates object.
     *
     * @return A valid non-null instance of a Transformer.
     *
     * @throws TransformerConfigurationException if a Transformer can not be created.
     */
    Transformer newTransformer() throws TransformerConfigurationException;

    
Get the properties corresponding to the effective xsl:output element. The object returned will be a clone of the internal values. Accordingly, it can be mutated without mutating the Templates object, and then handed in to Transformer.setOutputProperties. 
The properties returned should contain properties set by the stylesheet,
and these properties are "defaulted" by default properties specified by
section 16 of the
XSL Transformations (XSLT) W3C Recommendation.  The properties that
were specifically set by the stylesheet should be in the base
Properties list, while the XSLT default properties that were not
specifically set should be in the "default" Properties list.  Thus,
getOutputProperties().getProperty(String key) will obtain any
property in that was set by the stylesheet, or the default
properties, while
getOutputProperties().get(String key) will only retrieve properties
that were explicitly set in the stylesheet.


For XSLT,
Attribute
Value Templates attribute values will
be returned unexpanded (since there is no context at this point).  The
namespace prefixes inside Attribute Value Templates will be unexpanded,
so that they remain valid XPath values.


Returns:A Properties object, never null.
/**
     * Get the properties corresponding to the effective xsl:output element.
     * The object returned will
     * be a clone of the internal values. Accordingly, it can be mutated
     * without mutating the Templates object, and then handed in to
     * {@link javax.xml.transform.Transformer#setOutputProperties}.
     *
     * <p>The properties returned should contain properties set by the stylesheet,
     * and these properties are "defaulted" by default properties specified by
     * <a href="http://www.w3.org/TR/xslt#output">section 16 of the
     * XSL Transformations (XSLT) W3C Recommendation</a>.  The properties that
     * were specifically set by the stylesheet should be in the base
     * Properties list, while the XSLT default properties that were not
     * specifically set should be in the "default" Properties list.  Thus,
     * getOutputProperties().getProperty(String key) will obtain any
     * property in that was set by the stylesheet, <em>or</em> the default
     * properties, while
     * getOutputProperties().get(String key) will only retrieve properties
     * that were explicitly set in the stylesheet.</p>
     *
     * <p>For XSLT,
     * <a href="http://www.w3.org/TR/xslt#attribute-value-templates">Attribute
     * Value Templates</a> attribute values will
     * be returned unexpanded (since there is no context at this point).  The
     * namespace prefixes inside Attribute Value Templates will be unexpanded,
     * so that they remain valid XPath values.</p>
     *
     * @return A Properties object, never null.
     */
    Properties getOutputProperties();
}