/* Copyright (c) 2001 - 2007 TOPP - www.openplans.org. All rights reserved.
* This code is licensed under the GPL 2.0 license, availible at the root
* application directory.
*/
package org.geoserver.wms.map;
import java.io.IOException;
import java.io.OutputStream;
import java.util.Set;
import javax.xml.transform.TransformerException;
import org.geoserver.ows.Response;
import org.geoserver.platform.Operation;
import org.geoserver.platform.ServiceException;
import org.geotools.xml.transform.TransformerBase;
import org.springframework.util.Assert;
/**
* An OWS {@link Response} handler that knows how to encode a {@link XMLTransformerMap}
*
* @author Gabriel Roldan
* @see XMLTransformerMap
*/
public class XMLTransformerMapResponse extends AbstractMapResponse {
public XMLTransformerMapResponse() {
super(XMLTransformerMap.class, (Set<String>) null);
}
/**
* Encodes the {@link XMLTransformerMap} down to the given destination output stream.
*
* @param value
* an {@link XMLTransformerMap}
* @param output
* xml stream destination
* @param operation
* operation descriptor for which the map was produced; not used at all.
*/
@Override
public void write(Object value, OutputStream output, Operation operation) throws IOException,
ServiceException {
write(value, output);
}
public void write(Object value, OutputStream output) throws IOException, ServiceException {
Assert.isInstanceOf(XMLTransformerMap.class, value);
XMLTransformerMap map = (XMLTransformerMap) value;
TransformerBase transformer = map.getTransformer();
Object transformerSubject = map.getTransformerSubject();
try {
transformer.transform(transformerSubject, output);
} catch (TransformerException e) {
// TransformerException do not respect the Exception.getCause() contract
Throwable cause = e.getCause() != null ? e.getCause() : e.getException();
// we need to propagate the RuntimeException
if (cause instanceof RuntimeException) {
throw (RuntimeException) cause;
}
throw new ServiceException("getmap operation failed.", cause != null ? cause : e);
} finally {
map.dispose();
}
}
}