Mercurial > dive4elements > river

annotate gwt-client/src/main/java/org/dive4elements/river/client/server/ModuleServiceImpl.java @ 5861:172338b1407f

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GWT client: Added copyright header.
author Sascha L. Teichmann <teichmann@intevation.de>
date Sun, 28 Apr 2013 14:30:15 +0200
parents 5aa05a7a34b7
children ea9eef426962
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 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 :
http://dive4elements.wald.intevation.org