ingo@78: package de.intevation.flys.client.server;
ingo@78: 
ingo@78: import java.io.OutputStream;
ingo@78: import java.io.IOException;
ingo@549: import java.util.HashMap;
ingo@549: import java.util.Map;
ingo@78: 
ingo@78: import org.w3c.dom.Document;
ingo@78: 
ingo@78: import javax.servlet.http.HttpServlet;
ingo@78: import javax.servlet.http.HttpServletRequest;
ingo@78: import javax.servlet.http.HttpServletResponse;
ingo@78: 
ingo@213: import de.intevation.artifacts.common.utils.ClientProtocolUtils;
ingo@213: 
ingo@78: import de.intevation.artifacts.httpclient.http.HttpClient;
ingo@78: import de.intevation.artifacts.httpclient.http.HttpClientImpl;
ingo@78: 
ingo@78: 
ingo@78: /**
ingo@78:  * This service is used to request a chart from the artifact server. The
ingo@78:  * response is directed directly to the output stream, so the image that is
ingo@78:  * retrieved is displayed in the UI afterwards.
ingo@78:  *
ingo@78:  * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a>
ingo@78:  */
ingo@78: public class ChartOutputServiceImpl
ingo@78: extends      HttpServlet
ingo@78: {
ingo@78:     public void doGet(HttpServletRequest req, HttpServletResponse resp) {
ingo@78:         System.out.println("ChartOutputServiceImpl.doGet");
ingo@78: 
ingo@78:         try {
ingo@78:             OutputStream out = resp.getOutputStream();
ingo@78: 
ingo@78:             String serverUrl = req.getParameter("server");
ingo@78:             String uuid      = req.getParameter("uuid");
ingo@213:             String type      = req.getParameter("type");
ingo@254:             String locale    = req.getParameter("locale");
ingo@78: 
ingo@213:             Document request = ClientProtocolUtils.newOutCollectionDocument(
ingo@549:                 uuid, type, type,
ingo@549:                 ChartServiceHelper.getChartAttributes(prepareChartAttributes(req)));
ingo@78: 
ingo@254:             HttpClient client = new HttpClientImpl(serverUrl, locale);
ingo@213:             client.collectionOut(request, uuid, "chart", out);
ingo@78: 
ingo@78:             out.close();
ingo@78:             out.flush();
ingo@78:         }
ingo@78:         catch (IOException ioe) {
ingo@549:             ioe.printStackTrace();
ingo@78:             System.err.println(ioe.getMessage());
ingo@78:         }
ingo@280:         catch (Exception e) {
ingo@549:             e.printStackTrace();
ingo@280:             System.err.println(e.getMessage());
ingo@280:         }
ingo@280:     }
ingo@280: 
ingo@280: 
ingo@549:     protected Map<String, String> prepareChartAttributes(HttpServletRequest req) {
ingo@549:         Map<String, String> attr = new HashMap<String, String>();
ingo@280: 
ingo@549:         Map params = req.getParameterMap();
ingo@542: 
ingo@549:         attr.put("width", req.getParameter("width"));
ingo@549:         attr.put("height", req.getParameter("height"));
ingo@549:         attr.put("minx", req.getParameter("minx"));
ingo@549:         attr.put("maxx", req.getParameter("maxx"));
ingo@549:         attr.put("miny", req.getParameter("miny"));
ingo@549:         attr.put("maxy", req.getParameter("maxy"));
ingo@542: 
ingo@549:         return attr;
ingo@78:     }
ingo@78: }
ingo@280: // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :