ingo@274: package de.intevation.flys.client.server;
ingo@274: 
ingo@274: import java.io.OutputStream;
ingo@274: import java.io.IOException;
ingo@274: 
ingo@274: import org.w3c.dom.Document;
raimund@3499: import org.w3c.dom.Element;
ingo@274: 
ingo@1367: import org.apache.log4j.Logger;
ingo@1367: 
ingo@274: import javax.servlet.http.HttpServlet;
ingo@274: import javax.servlet.http.HttpServletRequest;
ingo@274: import javax.servlet.http.HttpServletResponse;
ingo@274: 
ingo@274: import de.intevation.artifacts.common.utils.ClientProtocolUtils;
raimund@3499: import de.intevation.artifacts.common.utils.XMLUtils;
ingo@274: 
ingo@274: import de.intevation.artifacts.httpclient.http.HttpClient;
ingo@274: import de.intevation.artifacts.httpclient.http.HttpClientImpl;
ingo@274: 
ingo@274: 
ingo@274: /**
ingo@274:  * This service is used to request a data export from the artifact server. The
ingo@274:  * response is directed directly to the output stream, so that a file dialog is
ingo@274:  * opened.
ingo@274:  *
ingo@274:  * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a>
ingo@274:  */
ingo@274: public class ExportServiceImpl
ingo@274: extends      HttpServlet
ingo@274: {
ingo@1367:     private static final Logger logger =
ingo@1367:         Logger.getLogger(ExportServiceImpl.class);
ingo@1367: 
ingo@1367: 
ingo@274:     public void doGet(HttpServletRequest req, HttpServletResponse resp) {
ingo@1367:         logger.info("ExportServiceImpl.doGet");
ingo@274: 
ingo@274:         try {
ingo@274:             OutputStream out = resp.getOutputStream();
ingo@274: 
sascha@3500:             String url    = getServletContext().getInitParameter("server-url");
sascha@3500:             String uuid   = req.getParameter("uuid");
rrenkert@4912:             String name   = req.getParameter("name");
sascha@3500:             String mode   = req.getParameter("mode");
sascha@3500:             String type   = req.getParameter("type");
sascha@3500:             String locale = req.getParameter("locale");
sascha@3500:             String km     = req.getParameter("km");
rrenkert@4912:             String fn     = name + "." + type;
ingo@274: 
ingo@274:             resp.setHeader("Content-Disposition", "attachment;filename=" + fn);
ingo@274: 
sascha@3500:             if (logger.isDebugEnabled()) {
sascha@3500:                 logger.debug("Request " + type + " export.");
sascha@3500:             }
raimund@3499: 
raimund@3499:             Document attr = null;
raimund@3499:             if (km != null && km.length() > 0) {
raimund@3499:                 attr = XMLUtils.newDocument();
raimund@3499:                 XMLUtils.ElementCreator ec =
raimund@3499:                         new XMLUtils.ElementCreator(attr, null, null);
raimund@3499:                 Element e = ec.create("km");
raimund@3499:                 e.setTextContent(km);
raimund@3499:                 attr.appendChild(e);
raimund@3499:             }
ingo@274:             Document request = ClientProtocolUtils.newOutCollectionDocument(
raimund@3499:                 uuid, mode, type, attr);
raimund@1425:             HttpClient client = new HttpClientImpl(url, locale);
ingo@274:             client.collectionOut(request, uuid, mode, out);
ingo@274: 
ingo@274:             out.close();
ingo@274:             out.flush();
ingo@274:         }
ingo@274:         catch (IOException ioe) {
ingo@1367:             logger.error(ioe, ioe);
ingo@274:         }
ingo@274:     }
ingo@274: }
ingo@274: // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :