/* 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.wfsv.response.v1_1_0;
import java.io.IOException;
import java.io.OutputStream;
import java.util.Collections;
import net.opengis.wfs.FeatureCollectionType;
import net.opengis.wfs.GetFeatureType;
import net.opengis.wfs.QueryType;
import net.opengis.wfs.ResultTypeType;
import net.opengis.wfs.WfsFactory;
import net.opengis.wfsv.GetLogType;
import org.geoserver.config.GeoServer;
import org.geoserver.ows.util.OwsUtils;
import org.geoserver.platform.Operation;
import org.geoserver.platform.ServiceException;
import org.geoserver.wfs.xml.GML2OutputFormat;
import org.geotools.feature.FeatureCollection;
import org.opengis.feature.simple.SimpleFeature;
import org.opengis.feature.simple.SimpleFeatureType;
/**
* Extends GML2OutputFormat to allow GetLog output to be encoded in GML2
* @author Andrea Aime
* @author David Winslow
*
*/
public class GetLogGML2OutputFormat extends GML2OutputFormat {
public GetLogGML2OutputFormat( GeoServer geoserver) {
super(geoserver);
}
protected void write(FeatureCollectionType featureCollection, OutputStream output,
Operation getFeature) throws IOException, ServiceException {
GetLogType request = (GetLogType) getFeature.getParameters()[0];
GetFeatureType ftRequest = toGetFeatureType(featureCollection, request);
prepare(ftRequest.getOutputFormat(), featureCollection, ftRequest);
encode(output, featureCollection, ftRequest);
}
/**
* Turns a GetLogType objects into an almost equivalent GetFeatureType object s
* that the superclass can do its work
* @param featureCollection
* @param request
* @return
*/
private GetFeatureType toGetFeatureType(FeatureCollectionType featureCollection,
GetLogType request) {
FeatureCollection<SimpleFeatureType, SimpleFeature> features = (FeatureCollection) featureCollection.getFeature().get(0);
SimpleFeatureType featureType = features.getSchema();
GetFeatureType ftRequest = WfsFactory.eINSTANCE.createGetFeatureType();
QueryType query = WfsFactory.eINSTANCE.createQueryType();
query.setTypeName(Collections.singletonList(featureType.getTypeName()));
ftRequest.getQuery().add(query);
ftRequest.setBaseUrl(request.getBaseUrl());
ftRequest.setHandle(request.getHandle());
ftRequest.setMaxFeatures(request.getMaxFeatures());
ftRequest.setOutputFormat(request.getOutputFormat());
ftRequest.setResultType(ResultTypeType.RESULTS_LITERAL);
return ftRequest;
}
public boolean canHandle(Operation operation) {
// GetFeature operation?
if ("GetLog".equalsIgnoreCase(operation.getId())) {
// also check that the resultType is "results"
GetLogType request = (GetLogType) OwsUtils.parameter(operation.getParameters(),
GetLogType.class);
return request.getResultType() == ResultTypeType.RESULTS_LITERAL;
}
return false;
}
}