/* 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.vfny.geoserver.wcs.requests.readers;
import java.io.IOException;
import java.io.Reader;
import java.util.logging.Level;
import javax.servlet.http.HttpServletRequest;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.parsers.SAXParser;
import javax.xml.parsers.SAXParserFactory;
import org.geoserver.wcs.WCSInfo;
import org.vfny.geoserver.Request;
import org.vfny.geoserver.util.requests.readers.XmlRequestReader;
import org.vfny.geoserver.wcs.WcsException;
import org.vfny.geoserver.wcs.requests.CoverageHandler;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;
import org.xml.sax.helpers.ParserAdapter;
/**
* DOCUMENT ME!
*
* @author $Author: Alessio Fabiani (alessio.fabiani@gmail.com) $ (last modification)
* @author $Author: Simone Giannecchini (simboss1@gmail.com) $ (last modification)
*/
public class GetCoverageXmlReader extends XmlRequestReader {
public GetCoverageXmlReader(WCSInfo wcs) {
super(wcs);
}
public Request read(Reader reader, HttpServletRequest req)
throws WcsException {
// translate string into a proper SAX input source
InputSource requestSource = new InputSource(reader);
// instantiante parsers and content handlers
CoverageHandler contentHandler = new CoverageHandler((WCSInfo)getService());
// read in XML file and parse to content handler
try {
if (LOGGER.isLoggable(Level.FINEST)) {
LOGGER.finest("about to create parser");
}
SAXParserFactory factory = SAXParserFactory.newInstance();
SAXParser parser = factory.newSAXParser();
ParserAdapter adapter = new ParserAdapter(parser.getParser());
if (LOGGER.isLoggable(Level.FINEST)) {
LOGGER.finest("setting the content handler");
}
if (LOGGER.isLoggable(Level.FINEST)) {
LOGGER.finest("content handler = " + contentHandler);
}
adapter.setContentHandler(contentHandler);
if (LOGGER.isLoggable(Level.FINEST)) {
LOGGER.finest("about to parse");
}
if (LOGGER.isLoggable(Level.FINEST)) {
LOGGER.finest("calling parse on " + requestSource);
}
adapter.parse(requestSource);
if (LOGGER.isLoggable(Level.FINEST)) {
LOGGER.fine("just parsed: " + requestSource);
}
} catch (SAXException e) {
throw new WcsException(e, "XML getCoverage request SAX parsing error",
XmlRequestReader.class.getName());
} catch (IOException e) {
throw new WcsException(e, "XML get coverage request input error",
XmlRequestReader.class.getName());
} catch (ParserConfigurationException e) {
throw new WcsException(e, "Some sort of issue creating parser",
XmlRequestReader.class.getName());
}
Request r = contentHandler.getRequest(req);
if (r.getService() != null) {
final String service = r.getService();
if (!service.trim().toUpperCase().startsWith("WCS")) {
throw new WcsException("SERVICE parameter is wrong.");
}
} else {
throw new WcsException("SERVICE parameter is mandatory.");
}
if (r.getVersion() != null) {
final String version = r.getVersion();
if (!version.equals("1.0.0")) {
throw new WcsException("VERSION parameter is wrong.");
}
} else {
throw new WcsException("VERSION parameter is mandatory.");
}
if (r.getRequest() != null) {
final String requestType = r.getRequest();
if (!requestType.equalsIgnoreCase("GetCoverage")) {
throw new WcsException("REQUEST parameter is wrong.");
}
} else {
throw new WcsException("REQUEST parameter is mandatory.");
}
return r;
}
}