Mercurial > dive4elements > river

annotate flys-client/src/main/java/de/intevation/flys/client/server/ModuleServiceImpl.java @ 3690:558c5463ceca

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Tagged 'flys-client' as 2.9 flys-client/trunk@5373 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Ingo Weinzierl <ingo.weinzierl@intevation.de>
date Fri, 07 Sep 2012 09:21:25 +0000
parents 98fac4872ae6
children fed914a42a10
rev   line source
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1 package de.intevation.flys.client.server;
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2
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3 import de.intevation.artifacts.common.ArtifactNamespaceContext;
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4 import de.intevation.artifacts.common.utils.XMLUtils;
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5 import de.intevation.artifacts.httpclient.exceptions.ConnectionException;
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6 import de.intevation.artifacts.httpclient.http.HttpClient;
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7 import de.intevation.artifacts.httpclient.http.HttpClientImpl;
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8 import de.intevation.flys.client.client.services.ModuleService;
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9 import de.intevation.flys.client.client.services.RemoteServiceServlet;
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10 import de.intevation.flys.client.server.auth.User;
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11 import de.intevation.flys.client.shared.exceptions.ServerException;
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12 import de.intevation.flys.client.shared.model.DefaultModule;
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13 import de.intevation.flys.client.shared.model.Module;
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14
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15 import java.util.ArrayList;
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16 import java.util.List;
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17
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18 import javax.xml.xpath.XPathConstants;
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19
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20 import org.apache.log4j.Logger;
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21 import org.w3c.dom.Document;
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22 import org.w3c.dom.Element;
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23 import org.w3c.dom.NodeList;
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24
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25 public class ModuleServiceImpl
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26 extends RemoteServiceServlet
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27 implements ModuleService
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28 {
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29 private static final Logger logger =
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30 Logger.getLogger(ModuleServiceImpl.class);
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31
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32 public static final String XPATH_MODULES = "/art:modules/art:module";
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33
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34 public static final String ERROR_NO_MODULES_FOUND =
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35 "error_no_module_found";
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36
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37 @Override
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38 public Module[] list(String locale) throws ServerException {
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39 User user = this.getUser();
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40
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41 logger.info("ModuleService.list");
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42
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43 String url = getServletContext().getInitParameter("server-url");
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44
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45 // create dummy xml
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46 Document doc = XMLUtils.newDocument();
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47
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48 XMLUtils.ElementCreator ec = new XMLUtils.ElementCreator(
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49 doc,
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50 ArtifactNamespaceContext.NAMESPACE_URI,
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51 ArtifactNamespaceContext.NAMESPACE_PREFIX);
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52
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53 Element dummy = ec.create("modules");
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54 doc.appendChild(dummy);
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55
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56 HttpClient client = new HttpClientImpl(url, locale);
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57 try {
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58 Document result = client.callService(url, "modules", doc);
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59
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60 NodeList list = (NodeList) XMLUtils.xpath(
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61 result,
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62 XPATH_MODULES,
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63 XPathConstants.NODESET,
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64 ArtifactNamespaceContext.INSTANCE);
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65
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66 if (list == null) {
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67 logger.warn("No modules found.");
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68
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69 throw new ServerException(ERROR_NO_MODULES_FOUND);
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70 }
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71
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72 int num = list.getLength();
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73
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74 List<Module> modules = new ArrayList<Module>(list.getLength());
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75 for(int i =0; i < num; i++) {
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76 Element em = (Element)list.item(i);
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77 String name = em.getAttributeNS(
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78 ArtifactNamespaceContext.NAMESPACE_URI, "name");
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79 String localname = em.getAttributeNS(
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80 ArtifactNamespaceContext.NAMESPACE_URI, "localname");
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81 String strselected = em.getAttributeNS(
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82 ArtifactNamespaceContext.NAMESPACE_URI, "selected");
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83 boolean selected = strselected == null ? false :
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84 strselected.equalsIgnoreCase("true");
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85 logger.debug("Found module " + name + " " + localname);
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86 if (user == null || user.canUseFeature("module:" + name)) {
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87 modules.add(new DefaultModule(name, localname, selected));
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88 }
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89 }
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90 return modules.toArray(new Module[modules.size()]);
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91 }
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92 catch (ConnectionException ce) {
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93 logger.error(ce, ce);
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94 }
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95
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96 throw new ServerException(ERROR_NO_MODULES_FOUND);
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97 }
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98 }
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99
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100 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 tw=80 :
http://dive4elements.wald.intevation.org