Mercurial > dive4elements > river

annotate gwt-client/src/main/java/org/dive4elements/river/client/server/ThemeListingServiceImpl.java @ 5838:5aa05a7a34b7

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Rename modules to more fitting names.
author Sascha L. Teichmann <teichmann@intevation.de>
date Thu, 25 Apr 2013 15:23:37 +0200
parents flys-client/src/main/java/org/dive4elements/river/client/server/ThemeListingServiceImpl.java@821a02bbfb4e
children 172338b1407f
rev   line source
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821a02bbfb4e Fixed internal java dependencies
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1 package org.dive4elements.river.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 org.dive4elements.artifacts.common.utils.XMLUtils;
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6
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7 import org.dive4elements.artifacts.httpclient.exceptions.ConnectionException;
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8
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9 import org.dive4elements.artifacts.httpclient.http.HttpClient;
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10 import org.dive4elements.artifacts.httpclient.http.HttpClientImpl;
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11
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12 import org.dive4elements.river.client.client.services.ThemeListingService;
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13
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14 import org.dive4elements.river.client.shared.exceptions.ServerException;
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15
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16 import org.dive4elements.river.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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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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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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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 :
http://dive4elements.wald.intevation.org