/**
* The contents of this file are subject to the license and copyright
* detailed in the LICENSE and NOTICE files at the root of the source
* tree and available online at
*
* http://www.dspace.org/license/
*/
/**
* This class provides a set of static methods to load and transform XML
* documents. It supports parameter-aware stylesheets (XSLT).
*
* @author Miguel Ferreira
*
*/
import java.io.StringWriter;
import java.util.Map;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.dom.DOMSource;
import javax.xml.transform.stream.StreamResult;
import javax.xml.transform.stream.StreamSource;
import org.w3c.dom.Document;
public class Util{
/**
* Applies a stylesheet (that receives parameters) to a given xml document.
* The resulting XML document is converted to a string after transformation.
*
* @param xmlDocument
* the xml document to be transformed
* @param parameters
* the hashtable with the parameters to be passed to the
* stylesheet
* @param xsltFilename
* the filename of the stylesheet
* @return the transformed xml document as a string
* @throws Exception
*/
public static String transformDocumentAsString(Document xmlDocument, Map<String, String> parameters, String xsltFilename) throws Exception
{
// Generate a Transformer.
Transformer transformer = TransformerFactory.newInstance()
.newTransformer(new StreamSource(xsltFilename));
// set transformation parameters
if (parameters != null)
{
for (Map.Entry<String, String> param : parameters.entrySet())
{
transformer.setParameter(param.getKey(), param.getValue());
}
}
StringWriter stringWriter = new StringWriter();
StreamResult streamResult = new StreamResult(stringWriter);
// Perform the transformation.
transformer.transform(new DOMSource(xmlDocument), streamResult);
// Now you can get the output Node from the DOMResult.
return stringWriter.toString();
}
}
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