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/**
* 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.cxf.feature.transform;
import java.io.IOException;
import java.io.InputStream;
import java.io.Reader;
import java.util.logging.Logger;
import javax.xml.stream.XMLStreamException;
import javax.xml.stream.XMLStreamReader;
import org.apache.cxf.common.logging.LogUtils;
import org.apache.cxf.interceptor.Fault;
import org.apache.cxf.interceptor.StaxInInterceptor;
import org.apache.cxf.io.CachedOutputStream;
import org.apache.cxf.message.Message;
import org.apache.cxf.phase.Phase;
import org.apache.cxf.staxutils.StaxUtils;
/** Class provides XSLT transformation of incoming message.
* Actually it breaks streaming (can be fixed in further versions when XSLT engine supports XML stream)
*/
public class XSLTInInterceptor extends AbstractXSLTInterceptor {
private static final Logger LOG = LogUtils.getL7dLogger(XSLTInInterceptor.class);
public XSLTInInterceptor(String xsltPath) {
super(Phase.POST_STREAM, StaxInInterceptor.class, null, xsltPath);
}
public XSLTInInterceptor(String phase, Class before, Class after, String xsltPath) {
super(phase, before, after, xsltPath);
}
@Override
public void handleMessage(Message message) {
if (!isRequestor(message) && isGET(message) || checkContextProperty(message)) {
return;
}
// 1. Try to get and transform XMLStreamReader message content
XMLStreamReader xReader = message.getContent(XMLStreamReader.class);
if (xReader != null) {
transformXReader(message, xReader);
} else {
// 2. Try to get and transform InputStream message content
InputStream is = message.getContent(InputStream.class);
if (is != null) {
transformIS(message, is);
} else {
// 3. Try to get and transform Reader message content (actually used for JMS TextMessage)
Reader reader = message.getContent(Reader.class);
if (reader != null) {
transformReader(message, reader);
}
}
}
}
protected void transformXReader(Message message, XMLStreamReader xReader) {
CachedOutputStream cachedOS = new CachedOutputStream();
try {
StaxUtils.copy(xReader, cachedOS);
InputStream transformedIS = XSLTUtils.transform(getXSLTTemplate(), cachedOS.getInputStream());
XMLStreamReader transformedReader = StaxUtils.createXMLStreamReader(transformedIS);
message.setContent(XMLStreamReader.class, transformedReader);
} catch (XMLStreamException e) {
throw new Fault("STAX_COPY", LOG, e, e.getMessage());
} catch (IOException e) {
throw new Fault("GET_CACHED_INPUT_STREAM", LOG, e, e.getMessage());
} finally {
try {
StaxUtils.close(xReader);
} catch (XMLStreamException ex) {
throw new Fault(ex);
}
try {
cachedOS.close();
} catch (IOException e) {
LOG.warning("Cannot close stream after transformation: " + e.getMessage());
}
}
}
protected void transformIS(Message message, InputStream is) {
try (InputStream inputStream = is) {
message.setContent(InputStream.class, XSLTUtils.transform(getXSLTTemplate(), inputStream));
} catch (IOException e) {
LOG.warning("Cannot close stream after transformation: " + e.getMessage());
}
}
protected void transformReader(Message message, Reader reader) {
try (Reader r = reader) {
message.setContent(Reader.class, XSLTUtils.transform(getXSLTTemplate(), r));
} catch (IOException e) {
LOG.warning("Cannot close stream after transformation: " + e.getMessage());
}
}
}