Mercurial > dive4elements > river
annotate flys-client/src/main/java/de/intevation/flys/client/server/ThemeListingServiceImpl.java @ 3826:7a34af684ed4
Add station info to the gauges
flys-client/trunk@5521 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author | Bjoern Ricks <bjoern.ricks@intevation.de> |
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date | Wed, 19 Sep 2012 12:41:48 +0000 |
parents | 37dce0f2f63b |
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1 package de.intevation.flys.client.server; |
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2 |
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3 import com.google.gwt.user.server.rpc.RemoteServiceServlet; |
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4 |
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5 import de.intevation.artifacts.common.utils.XMLUtils; |
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6 |
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7 import de.intevation.artifacts.httpclient.exceptions.ConnectionException; |
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8 |
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9 import de.intevation.artifacts.httpclient.http.HttpClient; |
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10 import de.intevation.artifacts.httpclient.http.HttpClientImpl; |
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11 |
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12 import de.intevation.flys.client.client.services.ThemeListingService; |
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13 |
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14 import de.intevation.flys.client.shared.exceptions.ServerException; |
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15 |
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16 import de.intevation.flys.client.shared.model.Style; |
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17 |
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18 import java.util.HashMap; |
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19 import java.util.Map; |
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20 |
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21 import javax.xml.xpath.XPathConstants; |
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22 |
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23 import org.apache.log4j.Logger; |
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24 |
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25 import org.w3c.dom.Document; |
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26 import org.w3c.dom.Element; |
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27 import org.w3c.dom.NodeList; |
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28 |
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29 /** |
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30 * This interface provides a method to list themes filtered by name. |
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31 * |
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32 * @author <a href="mailto:raimund.renkert@intevation.de">Raimund Renkert</a> |
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33 */ |
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34 public class ThemeListingServiceImpl |
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35 extends RemoteServiceServlet |
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36 implements ThemeListingService |
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37 { |
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38 private static final Logger logger = |
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39 Logger.getLogger(ThemeListingServiceImpl.class); |
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40 |
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41 |
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42 private static final String XPATH_THEME_GROUPS = "/themes/themegroup"; |
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43 /** The error message key that is thrown if an error occured while reading |
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44 * the supported rivers from server.*/ |
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45 public static final String ERROR_NO_GROUPS_FOUND = "error_no_groups_found"; |
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46 |
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47 |
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48 public Map<String, Style> list(String locale, String name) |
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49 throws ServerException |
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50 { |
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51 String url = getServletContext().getInitParameter("server-url"); |
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52 |
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53 Document doc = XMLUtils.newDocument(); |
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54 |
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55 XMLUtils.ElementCreator ec = new XMLUtils.ElementCreator( |
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56 doc, |
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57 null, |
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58 null); |
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59 |
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60 Element e = ec.create("theme"); |
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61 ec.addAttr(e, "name", name); |
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62 doc.appendChild(e); |
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63 HttpClient client = new HttpClientImpl(url, locale); |
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64 |
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65 try { |
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66 Document res = client.callService(url, "themelisting", doc); |
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67 |
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68 NodeList themeGroups = (NodeList) XMLUtils.xpath( |
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69 res, |
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70 XPATH_THEME_GROUPS, |
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71 XPathConstants.NODESET, |
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72 null); |
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73 |
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74 if (themeGroups == null || themeGroups.getLength() == 0) { |
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75 throw new ServerException(ERROR_NO_GROUPS_FOUND); |
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76 } |
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77 |
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78 int count = themeGroups.getLength(); |
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79 |
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80 Map<String, Style> theStyles = new HashMap<String, Style>(count); |
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81 |
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82 for (int i = 0; i < count; i++) { |
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83 Element tmp = (Element)themeGroups.item(i); |
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84 |
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85 String groupName = tmp.getAttribute("name"); |
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86 NodeList theTheme = (NodeList) XMLUtils.xpath( |
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87 tmp, |
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88 "theme", |
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89 XPathConstants.NODESET, |
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90 null); |
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91 |
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92 for (int j = 0; j < theTheme.getLength(); j++) { |
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93 Element elem = (Element) theTheme.item(j); |
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94 theStyles.put(groupName, StyleHelper.getStyle(elem)); |
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95 } |
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96 } |
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97 |
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98 return theStyles; |
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99 } |
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100 catch (ConnectionException ce) { |
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101 logger.error(ce, ce); |
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102 } |
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103 |
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104 throw new ServerException(ERROR_NO_GROUPS_FOUND); |
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105 } |
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106 } |
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107 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : |