Mercurial > dive4elements > river
annotate gwt-client/src/main/java/org/dive4elements/river/client/server/DischargeInfoXML.java @ 6837:9da2298ae380
(issue1353) Add river name to query for discharge Info
The previous assumption was that the official number is unique
for a gauge. This assumption is broken by having multiple variants
of a river in the database, like Donau (schleusenkanäle)
author | Andre Heinecke <aheinecke@intevation.de> |
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date | Thu, 15 Aug 2013 15:57:13 +0200 |
parents | ea9eef426962 |
children | 086efb4196d7 |
rev | line source |
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1 /* Copyright (C) 2011, 2012, 2013 by Bundesanstalt für Gewässerkunde |
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2 * Software engineering by Intevation GmbH |
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3 * |
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4 * This file is Free Software under the GNU AGPL (>=v3) |
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5 * and comes with ABSOLUTELY NO WARRANTY! Check out the |
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6 * documentation coming with Dive4Elements River for details. |
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7 */ |
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8 |
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9 package org.dive4elements.river.client.server; |
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10 |
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11 import java.io.InputStream; |
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12 import java.io.IOException; |
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13 import java.io.OutputStream; |
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14 |
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15 import org.w3c.dom.Document; |
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16 import org.w3c.dom.Element; |
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17 |
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18 import org.apache.log4j.Logger; |
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19 |
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20 import javax.servlet.http.HttpServlet; |
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21 import javax.servlet.http.HttpServletRequest; |
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22 import javax.servlet.http.HttpServletResponse; |
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23 |
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24 import org.dive4elements.artifacts.common.ArtifactNamespaceContext; |
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25 import org.dive4elements.artifacts.common.utils.XMLUtils; |
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26 |
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27 import org.dive4elements.artifacts.httpclient.exceptions.ConnectionException; |
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28 import org.dive4elements.artifacts.httpclient.http.HttpClient; |
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29 import org.dive4elements.artifacts.httpclient.http.HttpClientImpl; |
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30 import org.dive4elements.artifacts.httpclient.http.response.StreamResponseHandler; |
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31 |
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32 |
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33 /** |
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34 * @author <a href="mailto:raimund.renkert@intevation.de">Raimund Renkert</a> |
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35 */ |
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36 public class DischargeInfoXML |
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37 extends HttpServlet |
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38 { |
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39 private static final Logger logger = Logger.getLogger(DischargeInfoXML.class); |
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40 |
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41 |
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42 public static final String ERROR_NO_DISTANCEINFO_FOUND = |
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43 "error_no_dischargeinfo_found"; |
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44 |
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45 |
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46 public void doGet(HttpServletRequest req, HttpServletResponse resp) { |
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47 logger.info("DischargeInfoXML.doGet"); |
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48 |
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49 String url = getServletContext().getInitParameter("server-url"); |
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50 |
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51 String gauge = req.getParameter("gauge"); |
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52 |
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53 String river = req.getParameter("river"); |
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54 |
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55 Document doc = XMLUtils.newDocument(); |
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56 |
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57 XMLUtils.ElementCreator ec = new XMLUtils.ElementCreator( |
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58 doc, |
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59 ArtifactNamespaceContext.NAMESPACE_URI, |
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60 ArtifactNamespaceContext.NAMESPACE_PREFIX); |
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61 |
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62 Element gaugeEl = ec.create("gauge"); |
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63 gaugeEl.setTextContent(gauge); |
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64 |
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65 if (river != null && !river.isEmpty()) { |
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66 riverEl.setTextContent(river); |
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67 gaugeEl.appendChild(riverEl); |
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68 } |
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69 |
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70 doc.appendChild(gaugeEl); |
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71 |
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72 HttpClient client = new HttpClientImpl(url); |
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73 |
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74 try { |
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75 InputStream in = (InputStream) client.callService( |
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76 url, "dischargeinfo", doc, new StreamResponseHandler()); |
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77 |
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78 OutputStream out = resp.getOutputStream(); |
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79 |
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80 byte[] b = new byte[4096]; |
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81 int i; |
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82 while ((i = in.read(b)) >= 0) { |
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83 out.write(b, 0, i); |
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84 } |
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85 |
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86 out.flush(); |
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87 out.close(); |
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88 } |
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89 catch (ConnectionException ce) { |
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90 logger.error(ce, ce); |
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91 } |
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92 catch (IOException ioe) { |
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93 logger.error(ioe, ioe); |
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94 } |
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95 } |
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96 } |
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97 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : |