Mercurial > dive4elements > river

annotate gwt-client/src/main/java/org/dive4elements/river/client/server/ThemeListingServiceImpl.java @ 9726:0a5239a1e46e 3.2.x

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Upgrade to Log4j 2
author Tom Gottfried <tom@intevation.de>
date Wed, 02 Mar 2022 10:26:50 +0100
parents 238fc722f87a
children
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.logging.log4j.Logger;
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32 import org.apache.logging.log4j.LogManager;
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33
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34 import org.w3c.dom.Document;
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35 import org.w3c.dom.Element;
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36 import org.w3c.dom.NodeList;
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37
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38 /**
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39 * This interface provides a method to list themes filtered by name.
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40 *
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41 * @author <a href="mailto:raimund.renkert@intevation.de">Raimund Renkert</a>
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42 */
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43 public class ThemeListingServiceImpl
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44 extends RemoteServiceServlet
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45 implements ThemeListingService
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46 {
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47 private static final Logger log =
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48 LogManager.getLogger(ThemeListingServiceImpl.class);
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49
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50
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51 private static final String XPATH_THEME_GROUPS = "/themes/themegroup";
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52 /** The error message key that is thrown if an error occured while reading
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53 * the supported rivers from server.*/
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54 public static final String ERROR_NO_GROUPS_FOUND = "error_no_groups_found";
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55
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56
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57 public Map<String, Style> list(String locale, String name)
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58 throws ServerException
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59 {
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60 String url = getServletContext().getInitParameter("server-url");
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61
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62 Document doc = XMLUtils.newDocument();
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63
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64 XMLUtils.ElementCreator ec = new XMLUtils.ElementCreator(
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65 doc,
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66 null,
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67 null);
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68
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69 Element e = ec.create("theme");
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70 ec.addAttr(e, "name", name);
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71 doc.appendChild(e);
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72 HttpClient client = new HttpClientImpl(url, locale);
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73
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74 try {
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75 Document res = client.callService(url, "themelisting", doc);
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76
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77 NodeList themeGroups = (NodeList) XMLUtils.xpath(
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78 res,
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79 XPATH_THEME_GROUPS,
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80 XPathConstants.NODESET,
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81 null);
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82
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83 if (themeGroups == null || themeGroups.getLength() == 0) {
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84 throw new ServerException(ERROR_NO_GROUPS_FOUND);
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85 }
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86
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87 int count = themeGroups.getLength();
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88
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89 Map<String, Style> theStyles = new HashMap<String, Style>(count);
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90
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91 for (int i = 0; i < count; i++) {
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92 Element tmp = (Element)themeGroups.item(i);
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93
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94 String groupName = tmp.getAttribute("name");
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95 NodeList theTheme = (NodeList) XMLUtils.xpath(
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96 tmp,
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97 "theme",
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98 XPathConstants.NODESET,
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99 null);
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100
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101 for (int j = 0; j < theTheme.getLength(); j++) {
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102 Element elem = (Element) theTheme.item(j);
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103 theStyles.put(groupName, StyleHelper.getStyle(elem));
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104 }
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105 }
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106
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107 return theStyles;
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108 }
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109 catch (ConnectionException ce) {
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110 log.error(ce, ce);
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111 }
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112
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113 throw new ServerException(ERROR_NO_GROUPS_FOUND);
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114 }
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115 }
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116 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org