Mercurial > dive4elements > river

annotate flys-client/src/main/java/de/intevation/flys/client/server/BedKMChartServiceImpl.java @ 4604:488db475613d

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Add methods to hide and show the manage projects button of the header It should be possible to show the manage projects button only if the ProjectList is hidden. Therefore add methods to allow to show and hide the button.
author Björn Ricks <bjoern.ricks@intevation.de>
date Fri, 30 Nov 2012 10:00:39 +0100
parents f84ed73311f2
children
rev   line source
3705
f84ed73311f2 Added UI for minfo bed quality calculation and added new services for overview
Raimund Renkert <raimund.renkert@intevation.de>
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1 package de.intevation.flys.client.server;
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2
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3 import java.io.IOException;
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4 import java.io.InputStream;
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5 import java.io.OutputStream;
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6
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7 import javax.servlet.http.HttpServlet;
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8 import javax.servlet.http.HttpServletRequest;
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9 import javax.servlet.http.HttpServletResponse;
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10
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11 import org.apache.log4j.Logger;
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12 import org.w3c.dom.Document;
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13 import org.w3c.dom.Element;
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14 import org.w3c.dom.NodeList;
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15
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16 import de.intevation.artifacts.common.utils.XMLUtils;
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17 import de.intevation.artifacts.httpclient.exceptions.ConnectionException;
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18 import de.intevation.artifacts.httpclient.http.HttpClient;
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19 import de.intevation.artifacts.httpclient.http.HttpClientImpl;
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20 import de.intevation.artifacts.httpclient.http.response.StreamResponseHandler;
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21
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22 public class BedKMChartServiceImpl extends HttpServlet {
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23 private static final Logger log =
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24 Logger.getLogger(FixingsKMChartServiceImpl.class);
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25
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26 public static final String SERVICE_NAME = "bed-km-chart";
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27
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28 public BedKMChartServiceImpl() {
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29 }
f84ed73311f2 Added UI for minfo bed quality calculation and added new services for overview
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30
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31 public void doGet(HttpServletRequest req, HttpServletResponse resp) {
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32
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33 log.info("BedKMChartServiceImpl.doGet");
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34
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35 String url = getServletContext().getInitParameter("server-url");
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36 String locale = req.getParameter("locale");
f84ed73311f2 Added UI for minfo bed quality calculation and added new services for overview
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37 String filter = req.getParameter("filter");
f84ed73311f2 Added UI for minfo bed quality calculation and added new services for overview
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38
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39 if (filter == null || filter.length() == 0) {
f84ed73311f2 Added UI for minfo bed quality calculation and added new services for overview
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40 log.warn("Missing 'filter' parameter.");
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41 return;
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42 }
f84ed73311f2 Added UI for minfo bed quality calculation and added new services for overview
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43
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Raimund Renkert <raimund.renkert@intevation.de>
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44 if (locale == null || locale.length() == 0) {
f84ed73311f2 Added UI for minfo bed quality calculation and added new services for overview
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45 locale = "de";
f84ed73311f2 Added UI for minfo bed quality calculation and added new services for overview
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46 }
f84ed73311f2 Added UI for minfo bed quality calculation and added new services for overview
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47
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Raimund Renkert <raimund.renkert@intevation.de>
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48 Document filterDoc = XMLUtils.jsonToXML(filter);
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49
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50 if (filterDoc == null) {
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51 log.warn("Creating filter document failed.");
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52 return;
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53 }
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54
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55 InputStream in;
f84ed73311f2 Added UI for minfo bed quality calculation and added new services for overview
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56
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57 try {
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58 HttpClient client = new HttpClientImpl(url, locale);
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59 in = (InputStream)client.callService(
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60 url, // XXX: Why? The URL is passed by construction already.
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61 SERVICE_NAME,
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62 filterDoc,
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63 new StreamResponseHandler());
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Raimund Renkert <raimund.renkert@intevation.de>
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64 }
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65 catch (ConnectionException ce) {
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66 log.error(ce);
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67 return;
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68 }
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69
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70 resp.setHeader("Content-Type", guessMIMEType(filterDoc));
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71
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72 try {
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73 OutputStream out = resp.getOutputStream();
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74
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75 byte [] buf = new byte[4096];
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76 int i = -1;
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77 while ((i = in.read(buf)) >= 0) {
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78 out.write(buf, 0, i);
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79 }
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80 out.flush();
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81 }
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82 catch (IOException ioe) {
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83 log.error(ioe);
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84 }
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85 finally {
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86 try { in.close(); }
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87 catch (IOException ioe) { /* ignored */ }
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88 }
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89 }
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90
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91 protected static String guessMIMEType(Document document) {
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92
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93 NodeList formats = document.getElementsByTagName("format");
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94
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95 String format = "png";
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96
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97 if (formats.getLength() > 0) {
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98 String type = ((Element)formats.item(0)).getAttribute("type");
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99 if (type.length() > 0) {
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100 format = type;
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101 }
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102 }
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103
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104 return "image/" + format;
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105 }
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106 }
http://dive4elements.wald.intevation.org