/* 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 static org.geoserver.ows.util.ResponseUtils.*;
import java.io.IOException;
import java.io.OutputStream;
import java.nio.charset.Charset;
import java.util.Arrays;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Set;
import net.opengis.wfs.BaseRequestType;
import net.opengis.wfs.GetFeatureType;
import net.opengis.wfs.ResultTypeType;
import net.opengis.wfsv.VersionedFeatureCollectionType;
import org.geoserver.catalog.Catalog;
import org.geoserver.catalog.FeatureTypeInfo;
import org.geoserver.config.GeoServer;
import org.geoserver.config.GeoServerInfo;
import org.geoserver.ows.Response;
import org.geoserver.ows.URLMangler.URLType;
import org.geoserver.ows.util.OwsUtils;
import org.geoserver.ows.util.RequestUtils;
import org.geoserver.ows.util.ResponseUtils;
import org.geoserver.platform.Operation;
import org.geoserver.platform.ServiceException;
import org.geoserver.wfs.WFSException;
import org.geoserver.wfs.WFSInfo;
import org.geoserver.wfs.xml.GML3OutputFormat;
import org.geoserver.wfsv.xml.v1_1_0.WFSVConfiguration;
import org.geotools.feature.FeatureCollection;
import org.geotools.xml.Encoder;
import org.opengis.feature.simple.SimpleFeature;
import org.opengis.feature.simple.SimpleFeatureType;
/**
* Works just like {@link GML3OutputFormat}, but refers to DescribeVersionedFeatureType and encodes
* a VersionedFeatureCollection
*
* @author Andrea Aime
*
*/
public class VersionedGML3OutputFormat extends Response {
private WFSInfo wfs;
private Catalog catalog;
private WFSVConfiguration configuration;
public VersionedGML3OutputFormat(GeoServer gs,
WFSVConfiguration configuration) {
super(VersionedFeatureCollectionType.class,
new HashSet<String>(Arrays.asList(new String[] { "gml3",
"text/xml; subtype=gml/3.1.1" })));
this.wfs = gs.getService( WFSInfo.class );
this.catalog = gs.getCatalog();
this.configuration = configuration;
}
public String getMimeType(Object value, Operation operation) {
return "text/xml; subtype=gml/3.1.1";
}
public void write(Object value, OutputStream output, Operation getFeature)
throws ServiceException, IOException {
VersionedFeatureCollectionType results = (VersionedFeatureCollectionType) value;
List featureCollections = results.getFeature();
// round up the info objects for each feature collection
HashMap /* <String,Set> */ns2metas = new HashMap();
for (Iterator fc = featureCollections.iterator(); fc.hasNext();) {
FeatureCollection<SimpleFeatureType, SimpleFeature> features = (FeatureCollection) fc.next();
SimpleFeatureType featureType = features.getSchema();
// load the metadata for the feature type
String namespaceURI = featureType.getName().getNamespaceURI();
FeatureTypeInfo meta = catalog.getFeatureTypeByName(namespaceURI, featureType.getTypeName() );
if (meta == null)
throw new WFSException("Could not find feature type "
+ namespaceURI + ":" + featureType.getTypeName()
+ " in the GeoServer catalog");
// add it to the map
Set metas = (Set) ns2metas.get(namespaceURI);
if (metas == null) {
metas = new HashSet();
ns2metas.put(namespaceURI, metas);
}
metas.add(meta);
}
GeoServerInfo global = wfs.getGeoServer().getGlobal();
Encoder encoder = new Encoder(configuration, configuration.schema());
encoder.setEncoding(Charset.forName( global.getCharset() ));
// declare wfs schema location
BaseRequestType gft = (BaseRequestType) getFeature.getParameters()[0];
encoder.setSchemaLocation(org.geoserver.wfsv.xml.v1_1_0.WFSV.NAMESPACE,
buildSchemaURL(gft.getBaseUrl(), "wfs/1.1.0/wfs.xsd"));
// declare application schema namespaces
for (Iterator i = ns2metas.entrySet().iterator(); i.hasNext();) {
Map.Entry entry = (Map.Entry) i.next();
String namespaceURI = (String) entry.getKey();
Set metas = (Set) entry.getValue();
StringBuffer typeNames = new StringBuffer();
for (Iterator m = metas.iterator(); m.hasNext();) {
FeatureTypeInfo meta = (FeatureTypeInfo) m.next();
typeNames.append(meta.getName());
if (m.hasNext()) {
typeNames.append(",");
}
}
// set the schema location
Map<String, String> params = params("service", "WFS",
"version", "1.1.0",
"request", "DescribeFeatureType",
"typeName", typeNames.toString());
encoder.setSchemaLocation(namespaceURI, buildURL(gft.getBaseUrl(), "wfs", params, URLType.SERVICE));
}
encoder.encode(results,
org.geoserver.wfs.xml.v1_1_0.WFS.FEATURECOLLECTION, output);
}
public boolean canHandle(Operation operation) {
// GetVersionedFeature operation?
if ("GetVersionedFeature".equalsIgnoreCase(operation.getId())) {
// also check that the resultType is "results"
GetFeatureType request = (GetFeatureType) OwsUtils.parameter(
operation.getParameters(), GetFeatureType.class);
if (request.getResultType() == ResultTypeType.RESULTS_LITERAL) {
return true;
}
}
return false;
}
}