/* (c) 2014 Open Source Geospatial Foundation - all rights reserved
* (c) 2001 - 2013 OpenPlans
* This code is licensed under the GPL 2.0 license, available at the root
* application directory.
*/
package org.geoserver.wms.featureinfo;
import java.io.IOException;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;
import java.nio.charset.Charset;
import java.util.List;
import java.util.logging.Level;
import net.opengis.wfs.FeatureCollectionType;
import org.geoserver.platform.ServiceException;
import org.geoserver.wms.GetFeatureInfoRequest;
import org.geoserver.wms.WMS;
import org.geotools.feature.FeatureCollection;
import org.geotools.feature.FeatureIterator;
import org.opengis.feature.Feature;
import org.opengis.feature.simple.SimpleFeature;
import org.opengis.feature.simple.SimpleFeatureType;
import org.opengis.feature.type.AttributeDescriptor;
import org.opengis.feature.type.Name;
import com.vividsolutions.jts.geom.Geometry;
/**
* Generates a FeatureInfoResponse of type text. This simply reports the attributes of the feature
* requested as a text string. This class just performs the writeTo, the GetFeatureInfoDelegate and
* abstract feature info class handle the rest.
*
* @author James Macgill, PSU
* @version $Id$
*/
public class TextFeatureInfoOutputFormat extends GetFeatureInfoOutputFormat {
private WMS wms;
public TextFeatureInfoOutputFormat(final WMS wms) {
super("text/plain");
this.wms = wms;
}
/**
* Writes the feature information to the client in text/plain format.
*
* @see GetFeatureInfoOutputFormat#write
*/
//@SuppressWarnings("unchecked")
public void write(FeatureCollectionType results, GetFeatureInfoRequest request, OutputStream out)
throws ServiceException, IOException {
Charset charSet = wms.getCharSet();
OutputStreamWriter osw = new OutputStreamWriter(out, charSet);
// getRequest().getGeoServer().getCharSet());
PrintWriter writer = new PrintWriter(osw);
// DJB: this is to limit the number of features read - as per the spec
// 7.3.3.7 FEATURE_COUNT
int featuresPrinted = 0; // how many features we've actually printed
// so far!
int maxfeatures = request.getFeatureCount(); // will default to 1
// if not specified
// in the request
FeatureIterator reader = null;
try {
final List collections = results.getFeature();
final int size = collections.size();
FeatureCollection fr;
SimpleFeature f;
SimpleFeatureType schema;
List<AttributeDescriptor> types;
for (int i = 0; i < size; i++) // for each layer queried
{
fr = (FeatureCollection) collections.get(i);
reader = fr.features();
boolean startFeat = true;
while (reader.hasNext()) {
Feature feature = reader.next();
if (startFeat) {
writer.println("Results for FeatureType '" + fr.getSchema().getName()
+ "':");
startFeat = false;
}
if (featuresPrinted < maxfeatures) {
writer.println("--------------------------------------------");
if (feature instanceof SimpleFeature)
{
f = (SimpleFeature) feature;
schema = (SimpleFeatureType) f.getType();
types = schema.getAttributeDescriptors();
for (AttributeDescriptor descriptor : types) {
final Name name = descriptor.getName();
if (Geometry.class.isAssignableFrom(descriptor.getType().getBinding())) {
// writer.println(types[j].getName() + " =
// [GEOMETRY]");
// DJB: changed this to print out WKT - its very
// nice for users
// Geometry g = (Geometry)
// f.getAttribute(types[j].getName());
// writer.println(types[j].getName() + " =
// [GEOMETRY] = "+g.toText() );
// DJB: decided that all the geometry info was
// too much - they should use GML version if
// they want those details
Geometry g = (Geometry) f.getAttribute(name);
writer.println(name + " = [GEOMETRY (" + g.getGeometryType()
+ ") with " + g.getNumPoints() + " points]");
} else {
writer.println(name + " = " + f.getAttribute(name));
}
}
}
else
{
writer.println(feature.toString());
}
}
writer.println("--------------------------------------------");
featuresPrinted++;
}
}
} catch (Exception ife) {
LOGGER.log(Level.WARNING, "Error generating getFeaturInfo, HTML format", ife);
writer.println("Unable to generate information " + ife);
} finally {
if (reader != null) {
reader.close();
}
}
if (featuresPrinted == 0) {
writer.println("no features were found");
}
writer.flush();
}
@Override
public String getCharset(){
return wms.getGeoServer().getSettings().getCharset();
}
}