Mercurial > dive4elements > river
annotate gwt-client/src/main/java/org/dive4elements/river/client/server/ThemeListingServiceImpl.java @ 6043:c47337657f8c
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author | Felix Wolfsteller <felix.wolfsteller@intevation.de> |
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date | Thu, 16 May 2013 17:57:55 +0200 |
parents | ea9eef426962 |
children | 238fc722f87a |
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 com.google.gwt.user.server.rpc.RemoteServiceServlet; |
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12 |
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13 import org.dive4elements.artifacts.common.utils.XMLUtils; |
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14 |
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15 import org.dive4elements.artifacts.httpclient.exceptions.ConnectionException; |
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16 |
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17 import org.dive4elements.artifacts.httpclient.http.HttpClient; |
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18 import org.dive4elements.artifacts.httpclient.http.HttpClientImpl; |
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19 |
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20 import org.dive4elements.river.client.client.services.ThemeListingService; |
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21 |
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22 import org.dive4elements.river.client.shared.exceptions.ServerException; |
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23 |
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24 import org.dive4elements.river.client.shared.model.Style; |
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25 |
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26 import java.util.HashMap; |
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27 import java.util.Map; |
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28 |
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29 import javax.xml.xpath.XPathConstants; |
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30 |
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31 import org.apache.log4j.Logger; |
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32 |
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33 import org.w3c.dom.Document; |
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34 import org.w3c.dom.Element; |
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35 import org.w3c.dom.NodeList; |
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36 |
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37 /** |
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38 * This interface provides a method to list themes filtered by name. |
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39 * |
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40 * @author <a href="mailto:raimund.renkert@intevation.de">Raimund Renkert</a> |
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41 */ |
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42 public class ThemeListingServiceImpl |
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43 extends RemoteServiceServlet |
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44 implements ThemeListingService |
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45 { |
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46 private static final Logger logger = |
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47 Logger.getLogger(ThemeListingServiceImpl.class); |
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48 |
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49 |
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50 private static final String XPATH_THEME_GROUPS = "/themes/themegroup"; |
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51 /** The error message key that is thrown if an error occured while reading |
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52 * the supported rivers from server.*/ |
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53 public static final String ERROR_NO_GROUPS_FOUND = "error_no_groups_found"; |
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54 |
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55 |
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56 public Map<String, Style> list(String locale, String name) |
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57 throws ServerException |
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58 { |
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59 String url = getServletContext().getInitParameter("server-url"); |
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60 |
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61 Document doc = XMLUtils.newDocument(); |
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62 |
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63 XMLUtils.ElementCreator ec = new XMLUtils.ElementCreator( |
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64 doc, |
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65 null, |
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66 null); |
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67 |
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68 Element e = ec.create("theme"); |
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69 ec.addAttr(e, "name", name); |
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70 doc.appendChild(e); |
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71 HttpClient client = new HttpClientImpl(url, locale); |
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72 |
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73 try { |
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74 Document res = client.callService(url, "themelisting", doc); |
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75 |
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76 NodeList themeGroups = (NodeList) XMLUtils.xpath( |
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77 res, |
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78 XPATH_THEME_GROUPS, |
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79 XPathConstants.NODESET, |
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80 null); |
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81 |
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82 if (themeGroups == null || themeGroups.getLength() == 0) { |
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83 throw new ServerException(ERROR_NO_GROUPS_FOUND); |
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84 } |
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85 |
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86 int count = themeGroups.getLength(); |
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87 |
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88 Map<String, Style> theStyles = new HashMap<String, Style>(count); |
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89 |
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90 for (int i = 0; i < count; i++) { |
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91 Element tmp = (Element)themeGroups.item(i); |
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92 |
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93 String groupName = tmp.getAttribute("name"); |
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94 NodeList theTheme = (NodeList) XMLUtils.xpath( |
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95 tmp, |
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96 "theme", |
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97 XPathConstants.NODESET, |
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98 null); |
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99 |
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100 for (int j = 0; j < theTheme.getLength(); j++) { |
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101 Element elem = (Element) theTheme.item(j); |
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102 theStyles.put(groupName, StyleHelper.getStyle(elem)); |
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103 } |
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104 } |
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105 |
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106 return theStyles; |
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107 } |
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108 catch (ConnectionException ce) { |
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109 logger.error(ce, ce); |
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110 } |
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111 |
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112 throw new ServerException(ERROR_NO_GROUPS_FOUND); |
e75b15818435
Added a style chooser to the style editor to provide predefined styles and
Raimund Renkert <raimund.renkert@intevation.de>
parents:
diff
changeset
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113 } |
e75b15818435
Added a style chooser to the style editor to provide predefined styles and
Raimund Renkert <raimund.renkert@intevation.de>
parents:
diff
changeset
|
114 } |
e75b15818435
Added a style chooser to the style editor to provide predefined styles and
Raimund Renkert <raimund.renkert@intevation.de>
parents:
diff
changeset
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115 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : |