Mercurial > dive4elements > river
annotate gwt-client/src/main/java/org/dive4elements/river/client/server/ModuleServiceImpl.java @ 7134:11106b14daf2
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author | Felix Wolfsteller <felix.wolfsteller@intevation.de> |
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date | Mon, 23 Sep 2013 11:40:11 +0200 |
parents | ea9eef426962 |
children | 350a7cf09fbc |
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 org.dive4elements.artifacts.common.ArtifactNamespaceContext; |
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12 import org.dive4elements.artifacts.common.utils.XMLUtils; |
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13 import org.dive4elements.artifacts.httpclient.exceptions.ConnectionException; |
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14 import org.dive4elements.artifacts.httpclient.http.HttpClient; |
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15 import org.dive4elements.artifacts.httpclient.http.HttpClientImpl; |
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16 import org.dive4elements.river.client.client.services.ModuleService; |
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17 import org.dive4elements.river.client.server.auth.User; |
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18 import org.dive4elements.river.client.shared.exceptions.ServerException; |
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19 import org.dive4elements.river.client.shared.model.DefaultModule; |
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20 import org.dive4elements.river.client.shared.model.Module; |
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21 |
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22 import java.util.ArrayList; |
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23 import java.util.List; |
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24 |
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25 import javax.xml.xpath.XPathConstants; |
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26 |
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27 import org.apache.log4j.Logger; |
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28 import org.w3c.dom.Document; |
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29 import org.w3c.dom.Element; |
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30 import org.w3c.dom.NodeList; |
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31 |
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32 public class ModuleServiceImpl |
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33 extends RemoteServiceServlet |
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34 implements ModuleService |
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35 { |
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36 private static final Logger logger = |
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37 Logger.getLogger(ModuleServiceImpl.class); |
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38 |
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39 public static final String XPATH_MODULES = "/art:modules/art:module"; |
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40 |
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41 public static final String ERROR_NO_MODULES_FOUND = |
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42 "error_no_module_found"; |
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43 |
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44 @Override |
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45 public Module[] list(String locale) throws ServerException { |
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46 User user = this.getUser(); |
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47 |
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48 logger.info("ModuleService.list"); |
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49 |
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50 String url = getServletContext().getInitParameter("server-url"); |
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51 |
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52 // create dummy xml |
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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 ArtifactNamespaceContext.NAMESPACE_URI, |
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58 ArtifactNamespaceContext.NAMESPACE_PREFIX); |
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59 |
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60 Element dummy = ec.create("modules"); |
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61 doc.appendChild(dummy); |
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62 |
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63 HttpClient client = new HttpClientImpl(url, locale); |
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64 try { |
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65 Document result = client.callService(url, "modules", doc); |
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66 |
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67 NodeList list = (NodeList) XMLUtils.xpath( |
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68 result, |
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69 XPATH_MODULES, |
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70 XPathConstants.NODESET, |
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71 ArtifactNamespaceContext.INSTANCE); |
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72 |
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73 if (list == null) { |
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74 logger.warn("No modules found."); |
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75 |
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76 throw new ServerException(ERROR_NO_MODULES_FOUND); |
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77 } |
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78 |
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79 int num = list.getLength(); |
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80 |
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81 List<Module> modules = new ArrayList<Module>(list.getLength()); |
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82 for(int i =0; i < num; i++) { |
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83 Element em = (Element)list.item(i); |
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84 String name = em.getAttributeNS( |
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85 ArtifactNamespaceContext.NAMESPACE_URI, "name"); |
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86 String localname = em.getAttributeNS( |
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87 ArtifactNamespaceContext.NAMESPACE_URI, "localname"); |
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88 String strselected = em.getAttributeNS( |
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89 ArtifactNamespaceContext.NAMESPACE_URI, "selected"); |
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90 boolean selected = strselected == null ? false : |
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91 strselected.equalsIgnoreCase("true"); |
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92 logger.debug("Found module " + name + " " + localname); |
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93 if (user == null || user.canUseFeature("module:" + name)) { |
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94 modules.add(new DefaultModule(name, localname, selected)); |
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95 } |
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96 } |
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97 return modules.toArray(new Module[modules.size()]); |
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98 } |
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99 catch (ConnectionException ce) { |
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100 logger.error(ce, ce); |
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101 } |
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102 |
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103 throw new ServerException(ERROR_NO_MODULES_FOUND); |
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104 } |
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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 tw=80 : |