Mercurial > dive4elements > river

annotate flys-client/src/main/java/de/intevation/flys/client/server/DischargeInfoXML.java @ 4798:39885bdfc6fc

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Added calculation of the "Umhuellende" to calculation of "W fuer ungleichwertige Abfluesse". This is done by figuring out the WST columns that imfold the data and then do simple "gleichwertige" calculations from the start of the interval. This is too much because only the Qs are needed for the "Umhuellende".
author Sascha L. Teichmann <teichmann@intevation.de>
date Sun, 13 Jan 2013 16:18:28 +0100
parents 67468c90ca68
children
rev   line source
1600
67468c90ca68 Added service to request discharge infos at a specific gauge.
Raimund Renkert <raimund.renkert@intevation.de>
parents:
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1 package de.intevation.flys.client.server;
67468c90ca68 Added service to request discharge infos at a specific gauge.
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2
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Raimund Renkert <raimund.renkert@intevation.de>
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3 import java.io.InputStream;
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4 import java.io.IOException;
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5 import java.io.OutputStream;
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6
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7 import org.w3c.dom.Document;
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8 import org.w3c.dom.Element;
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9
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10 import org.apache.log4j.Logger;
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11
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12 import javax.servlet.http.HttpServlet;
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13 import javax.servlet.http.HttpServletRequest;
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14 import javax.servlet.http.HttpServletResponse;
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15
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16 import de.intevation.artifacts.common.ArtifactNamespaceContext;
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17 import de.intevation.artifacts.common.utils.XMLUtils;
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18
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19 import de.intevation.artifacts.httpclient.exceptions.ConnectionException;
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20 import de.intevation.artifacts.httpclient.http.HttpClient;
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21 import de.intevation.artifacts.httpclient.http.HttpClientImpl;
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22 import de.intevation.artifacts.httpclient.http.response.StreamResponseHandler;
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23
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24
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25 /**
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26 * @author <a href="mailto:raimund.renkert@intevation.de">Raimund Renkert</a>
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27 */
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28 public class DischargeInfoXML
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29 extends HttpServlet
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30 {
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31 private static final Logger logger = Logger.getLogger(DischargeInfoXML.class);
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32
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33
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34 public static final String ERROR_NO_DISTANCEINFO_FOUND =
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35 "error_no_dischargeinfo_found";
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36
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37
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38 public void doGet(HttpServletRequest req, HttpServletResponse resp) {
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39 logger.info("DischargeInfoXML.doGet");
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40
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41 String url = getServletContext().getInitParameter("server-url");
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42
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43 String gauge = req.getParameter("gauge");
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44
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45 Document doc = XMLUtils.newDocument();
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46
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47 XMLUtils.ElementCreator ec = new XMLUtils.ElementCreator(
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48 doc,
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49 ArtifactNamespaceContext.NAMESPACE_URI,
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50 ArtifactNamespaceContext.NAMESPACE_PREFIX);
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51
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52 Element gaugeEl = ec.create("gauge");
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53 gaugeEl.setTextContent(gauge);
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54
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55 doc.appendChild(gaugeEl);
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56
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57 HttpClient client = new HttpClientImpl(url);
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58
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59 try {
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60 InputStream in = (InputStream) client.callService(
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61 url, "dischargeinfo", doc, new StreamResponseHandler());
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62
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63 OutputStream out = resp.getOutputStream();
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64
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65 byte[] b = new byte[4096];
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66 int i;
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67 while ((i = in.read(b)) >= 0) {
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68 out.write(b, 0, i);
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69 }
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70
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71 out.flush();
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72 out.close();
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73 }
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74 catch (ConnectionException ce) {
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75 logger.error(ce, ce);
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76 }
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77 catch (IOException ioe) {
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78 logger.error(ioe, ioe);
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79 }
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80 }
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81 }
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82 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org