/* 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 com.orci.geoserver.wfs.getnearest;
import org.geotools.filter.FilterFilter;
import org.geotools.gml.GMLFilterDocument;
import org.geotools.gml.GMLFilterGeometry;
import org.vfny.geoserver.Request;
import org.vfny.geoserver.util.requests.readers.XmlRequestReader;
import org.vfny.geoserver.wfs.WfsException;
import org.vfny.geoserver.wfs.servlets.WFService;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;
import org.xml.sax.helpers.ParserAdapter;
import java.io.IOException;
import java.io.Reader;
import javax.servlet.http.HttpServletRequest;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.parsers.SAXParser;
import javax.xml.parsers.SAXParserFactory;
/**
* reads in a GetFeature XML WFS request from a XML stream
*
* @author Rob Hranac, TOPP
* @author Chris Holmes, TOPP
* @version $Id: GetFeatureXmlReader.java,v 1.8 2004/02/13 19:30:39 dmzwiers Exp $
*/
public class GetNearestXmlReader extends XmlRequestReader {
/**
* Creates a new GetFeatureXmlReader object.
*
* @param The WFS Service handling the request.
*/
public GetNearestXmlReader(WFService service) {
super(service);
}
/**
* Reads the GetFeature XML request into a FeatureRequest object.
*
* @param reader The plain POST text from the client.
* @param req DOCUMENT ME!
*
* @return The FeatureRequest from the xml reader.
*
* @throws WfsException For any problems reading the request.
*/
public Request read(Reader reader, HttpServletRequest req)
throws WfsException {
// translate string into a proper SAX input source
InputSource requestSource = new InputSource(reader);
// instantiante parsers and content handlers
GetNearestHandler contentHandler = new GetNearestHandler((WFService) getServiceRef());
FilterFilter filterParser = new FilterFilter(contentHandler, null);
GMLFilterGeometry geometryFilter = new GMLFilterGeometry(filterParser);
GMLFilterDocument documentFilter = new GMLFilterDocument(geometryFilter);
// read in XML file and parse to content handler
try {
LOGGER.finest("about to create parser");
SAXParserFactory factory = SAXParserFactory.newInstance();
SAXParser parser = factory.newSAXParser();
ParserAdapter adapter = new ParserAdapter(parser.getParser());
LOGGER.finest("setting the content handler");
LOGGER.finest("content handler = " + documentFilter);
adapter.setContentHandler(documentFilter);
LOGGER.finest("about to parse");
LOGGER.finest("calling parse on " + requestSource);
adapter.parse(requestSource);
LOGGER.fine("just parsed: " + requestSource);
} catch (SAXException e) {
e.printStackTrace(System.out);
throw new WfsException(e, "XML getFeature request SAX parsing error",
XmlRequestReader.class.getName());
} catch (IOException e) {
throw new WfsException(e, "XML get feature request input error",
XmlRequestReader.class.getName());
} catch (ParserConfigurationException e) {
throw new WfsException(e, "Some sort of issue creating parser",
XmlRequestReader.class.getName());
}
Request r = contentHandler.getRequest(req);
return r;
}
}