/*
* 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.
*/
package org.apache.brooklyn.core.mgmt.rebind.transformer.impl;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.net.URISyntaxException;
import javax.xml.transform.Source;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerException;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.stream.StreamResult;
import javax.xml.transform.stream.StreamSource;
import org.apache.brooklyn.core.mgmt.rebind.transformer.RawDataTransformer;
import com.google.common.annotations.Beta;
@Beta
public class XsltTransformer implements RawDataTransformer {
private final TransformerFactory factory;
private final String xsltContent;
public XsltTransformer(String xsltContent) {
factory = TransformerFactory.newInstance();
this.xsltContent = xsltContent;
}
public String transform(String input) throws IOException, URISyntaxException, TransformerException {
// stream source is single-use
StreamSource xslt = new StreamSource(new ByteArrayInputStream(xsltContent.getBytes()));
Transformer transformer = factory.newTransformer(xslt);
Source text = new StreamSource(new ByteArrayInputStream(input.getBytes()));
ByteArrayOutputStream baos = new ByteArrayOutputStream(input.length());
transformer.transform(text, new StreamResult(baos));
return new String(baos.toByteArray());
}
}