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// $Id$
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/**
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* Copyright (C) 2007 EDIT
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* European Distributed Institute of Taxonomy
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* http://www.e-taxonomy.eu
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*
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* The contents of this file are subject to the Mozilla Public License Version 1.1
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* See LICENSE.TXT at the top of this package for the full license terms.
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*/
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package eu.etaxonomy.cdm.print;
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import java.io.IOException;
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import java.io.InputStream;
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import java.net.URL;
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import javax.xml.transform.Templates;
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import javax.xml.transform.Transformer;
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import javax.xml.transform.TransformerException;
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import javax.xml.transform.TransformerFactory;
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import javax.xml.transform.stream.StreamSource;
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import org.apache.log4j.Logger;
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import org.jdom.Document;
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import org.jdom.transform.JDOMResult;
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import org.jdom.transform.JDOMSource;
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import org.jdom.transform.XSLTransformException;
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/**
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* Perform XSL transformations.
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*
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* Note: This class provides access to the JAXP XSL transformer currently active.
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*
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* @author n.hoffmann
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* @created Apr 20, 2010
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* @version 1.0
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*/
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public class Transformator {
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private static final Logger logger = Logger
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.getLogger(Transformator.class);
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private Transformer transformer;
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public Transformator(InputStream stylesheet) throws XSLTransformException{
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if(stylesheet == null){
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throw new IllegalArgumentException("Stylsheet may not be null");
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}
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try {
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TransformerFactory transformerFactory = TransformerFactory.newInstance();
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Templates templates = transformerFactory.newTemplates(new StreamSource(stylesheet));
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transformer = templates.newTransformer();
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}
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catch (TransformerException e) {
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throw new XSLTransformException("Could not construct XSLTransformer", e);
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}
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}
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public Transformator(URL stylesheet) throws XSLTransformException, IOException {
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this(stylesheet.openStream());
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}
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/**
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* Transforms the given document to an output document.
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*
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* @param inputDoc input document
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* @param resolver entity resolver for the input document
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* @return transformed output document
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* @throws XSLTransformException if there's a problem in the transformation
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*/
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public Document transform(org.jdom.Document inputDocument) throws XSLTransformException {
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JDOMSource source = new JDOMSource(inputDocument);
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JDOMResult result = new JDOMResult();
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try {
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logger.trace("Transforming input document: " + inputDocument);
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transformer.transform(source, result);
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Document resultDocument = result.getDocument();
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resultDocument.getContent();
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return resultDocument;
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}
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catch (TransformerException e) {
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logger.error(e);
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throw new XSLTransformException("Could not perform transformation", e);
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}
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}
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}
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