/* Copyright (c) 2001, 2003 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.vfny.geoserver.wfs.requests.readers;
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;
import org.vfny.geoserver.Request;
import org.vfny.geoserver.util.requests.readers.XmlRequestReader;
import org.vfny.geoserver.wfs.WfsException;
import org.vfny.geoserver.wfs.requests.DescribeHandler;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;
import org.xml.sax.helpers.ParserAdapter;
/**
* reads in a DescribeFeatureType WFS request from a XML stream
*
* @author Rob Hranac, TOPP
* @author Chris Holmes, TOPP
* @version 0.1
*/
public class DescribeXmlReader extends XmlRequestReader {
/**
* Creates a new DescribeXmlReader object.
*/
public DescribeXmlReader() {
}
/**
* DOCUMENT ME!
*
* @param reader DOCUMENT ME!
*
* @return DOCUMENT ME!
*
* @throws WfsException DOCUMENT ME!
*/
public Request read(Reader reader, HttpServletRequest req) throws WfsException {
/** create a describe feature type request class to return */
InputSource requestSource = new InputSource(reader);
// instantiante parsers and content handlers
DescribeHandler contentHandler = new DescribeHandler();
// read in XML file and parse to content handler
try {
SAXParserFactory factory = SAXParserFactory.newInstance();
SAXParser parser = factory.newSAXParser();
ParserAdapter adapter = new ParserAdapter(parser.getParser());
adapter.setContentHandler(contentHandler);
adapter.parse(requestSource);
LOGGER.finer("just parsed: " + requestSource);
} catch (SAXException e) {
throw new WfsException(e, "XML describe request parsing error",
getClass().getName());
} catch (IOException e) {
throw new WfsException(e, "XML describe request input error",
getClass().getName());
} catch (ParserConfigurationException e) {
throw new WfsException(e, "Some sort of issue creating parser",
getClass().getName());
}
LOGGER.finer("about to return ");
LOGGER.finer("returning " + contentHandler.getRequest(req));
Request r = contentHandler.getRequest(req);
return r;
}
}