Mercurial > dive4elements > river

annotate gwt-client/src/main/java/org/dive4elements/river/client/server/ThemeListingServiceImpl.java @ 8870:c26fb37899ca

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Introduced groups for modules. Modules marked with the same group-id, will be put together in the ui. Also using now the localization info from the server instead of localizing the modules again on the client side.
author gernotbelger
date Wed, 07 Feb 2018 11:59:13 +0100
parents 238fc722f87a
children 0a5239a1e46e
rev   line source
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Sascha L. Teichmann <teichmann@intevation.de>
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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 log =
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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 log.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);
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113 }
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114 }
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115 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org