Package org.geoserver.wfs.response

Source Code of org.geoserver.wfs.response.GeometryResponse

package org.geoserver.wfs.response;

import java.io.IOException;
import java.io.OutputStream;
import java.nio.charset.Charset;

import org.geoserver.config.GeoServer;
import org.geoserver.ows.Response;
import org.geoserver.platform.Operation;
import org.geoserver.platform.ServiceException;
import org.geoserver.wfs.WFSException;
import org.geotools.gml3.GML;
import org.geotools.gml3.GMLConfiguration;
import org.geotools.xml.Encoder;

import com.vividsolutions.jts.geom.Geometry;
import com.vividsolutions.jts.geom.LineString;
import com.vividsolutions.jts.geom.MultiLineString;
import com.vividsolutions.jts.geom.MultiPoint;
import com.vividsolutions.jts.geom.MultiPolygon;
import com.vividsolutions.jts.geom.Point;
import com.vividsolutions.jts.geom.Polygon;

/**
* Response which handles an individual {@link Geometry} and encodes it as gml.
*
* @author Justin Deoliveira, The Open Planning Project, jdeolive@openplans.org
*
*/
public class GeometryResponse extends WFSResponse {

    public GeometryResponse(GeoServer gs) {
        super( gs, Geometry.class );
    }
   
    public String getMimeType(Object value, Operation operation)
            throws ServiceException {

        return "text/xml; subtype=gml/3.1.1";
    }

    public void write(Object value, OutputStream output, Operation operation)
            throws IOException, ServiceException {
   
        Encoder encoder = new Encoder( new GMLConfiguration() );
        encoder.setEncoding(Charset.forName( getInfo().getGeoServer().getGlobal().getCharset() ));
       
        if ( value instanceof Point ) {
            encoder.encode( value, GML.Point, output );
        }
        else if ( value instanceof MultiPoint ) {
            encoder.encode( value, GML.MultiPoint, output );
        }
        else if ( value instanceof LineString ) {
            encoder.encode( value, GML.LineString, output );
        }
        else if ( value instanceof MultiLineString ) {
            encoder.encode( value, GML.MultiLineString, output );
        }
        else if ( value instanceof Polygon ) {
            encoder.encode( value, GML.Polygon, output );
        }
        else if ( value instanceof MultiPolygon ) {
            encoder.encode( value, GML.MultiPolygon, output );
        }
        else {
            throw new WFSException( "Cannot encode geometry of type: " + value.getClass() );
        }
     }
}
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