org.databene.xslt.XSLTTransformer Maven / Gradle / Ivy
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'databene webdecs' is an open source software library for
WEB Data Extraction, Conversion and Scripting, written by Volker Bergmann.
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/*
* (c) Copyright 2007 by Volker Bergmann. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, is permitted under the terms of the
* GNU General Public License.
*
* For redistributing this software or a derivative work under a license other
* than the GPL-compatible Free Software License as defined by the Free
* Software Foundation or approved by OSI, you must first obtain a commercial
* license to this software product from Volker Bergmann.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* WITHOUT A WARRANTY OF ANY KIND. ALL EXPRESS OR IMPLIED CONDITIONS,
* REPRESENTATIONS AND WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE
* HEREBY EXCLUDED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
package org.databene.xslt;
import javax.xml.transform.*;
import javax.xml.transform.stream.StreamSource;
import javax.xml.transform.stream.StreamResult;
import java.io.*;
import java.util.Map;
import java.util.HashMap;
/**
* Performs XSL transformations on XML strings and streams.
*
* Created: 26.01.2007 08:31:09
*/
public class XSLTTransformer {
private static final Map transformers = new HashMap();
private static Transformer getTransformer(String xsltString) throws TransformerConfigurationException {
Transformer transformer = transformers.get(xsltString);
if (transformer == null) {
Source xsltSource = new StreamSource(new StringReader(xsltString));
transformer = TransformerFactory.newInstance().newTransformer(xsltSource);
transformers.put(xsltString, transformer);
}
return transformer;
}
public static String transform(String xmlString, String xsltString) throws TransformerException {
Reader source = new StringReader(xmlString);
StringWriter writer = new StringWriter();
transform(source, xsltString, writer);
return writer.getBuffer().toString();
}
public static void transform(Reader reader, String xsltString, Writer writer) throws TransformerException {
Transformer transformer = getTransformer(xsltString);
transformer.transform(new StreamSource(reader), new StreamResult(writer));
}
}