Mercurial > dive4elements > river

annotate flys-client/src/main/java/de/intevation/flys/client/server/ModuleServiceImpl.java @ 3529:72d2ec6a471e

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Load the list of modules from the flys artifact server flys-client/trunk@5332 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Bjoern Ricks <bjoern.ricks@intevation.de>
date Fri, 31 Aug 2012 13:24:50 +0000
parents f9ef72f4c6d5
children 75a3a41a6e51
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 java.util.ArrayList;
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4 import java.util.List;
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5
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6 import javax.xml.xpath.XPathConstants;
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7
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8 import org.apache.log4j.Logger;
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9
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10 import org.w3c.dom.Document;
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11 import org.w3c.dom.Element;
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12 import org.w3c.dom.NodeList;
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13
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14 import de.intevation.artifacts.common.ArtifactNamespaceContext;
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15 import de.intevation.artifacts.common.utils.XMLUtils;
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16 import de.intevation.artifacts.httpclient.exceptions.ConnectionException;
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17 import de.intevation.artifacts.httpclient.http.HttpClient;
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18 import de.intevation.artifacts.httpclient.http.HttpClientImpl;
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19
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20 import de.intevation.flys.client.client.FLYSConstants;
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21 import de.intevation.flys.client.client.services.ModuleService;
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22 import de.intevation.flys.client.server.auth.User;
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23 import de.intevation.flys.client.shared.exceptions.ServerException;
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24 import de.intevation.flys.client.shared.model.DefaultModule;
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25 import de.intevation.flys.client.shared.model.Module;
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26
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27 public class ModuleServiceImpl
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28 extends RemoteServiceServlet
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29 implements ModuleService
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30 {
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31 private static final Logger logger =
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32 Logger.getLogger(ModuleServiceImpl.class);
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33
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34 public static final String XPATH_MODULES = "/art:modules/art:module";
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35
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36 public static final String ERROR_NO_MODULES_FOUND =
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37 "error_no_module_found";
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38
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39 @Override
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40 public Module[] list(String locale) throws ServerException {
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41 User user = this.getUser();
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42
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43 logger.info("ModuleService.list");
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44
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45 String url = getServletContext().getInitParameter("server-url");
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46
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47 // create dummy xml
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48 Document doc = XMLUtils.newDocument();
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49
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50 XMLUtils.ElementCreator ec = new XMLUtils.ElementCreator(
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51 doc,
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52 ArtifactNamespaceContext.NAMESPACE_URI,
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53 ArtifactNamespaceContext.NAMESPACE_PREFIX);
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54
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55 Element dummy = ec.create("modules");
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56 doc.appendChild(dummy);
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57
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58 HttpClient client = new HttpClientImpl(url, locale);
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59 try {
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60 Document result = client.callService(url, "modules", doc);
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61
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62 NodeList list = (NodeList) XMLUtils.xpath(
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63 result,
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64 XPATH_MODULES,
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65 XPathConstants.NODESET,
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66 ArtifactNamespaceContext.INSTANCE);
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67
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68 if (list == null) {
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69 logger.warn("No modules found.");
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70
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71 throw new ServerException(ERROR_NO_MODULES_FOUND);
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72 }
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73
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74 int num = list.getLength();
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75
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76 List<Module> modules = new ArrayList<Module>(list.getLength());
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77 for(int i =0; i < num; i++) {
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78 Element em = (Element)list.item(i);
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79 String name = em.getAttributeNS(
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80 ArtifactNamespaceContext.NAMESPACE_URI, "name");
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81 String localname = em.getAttributeNS(
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82 ArtifactNamespaceContext.NAMESPACE_URI, "localname");
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83 String strselected = em.getAttributeNS(
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84 ArtifactNamespaceContext.NAMESPACE_URI, "selected");
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85 boolean selected = strselected == null ? false :
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86 strselected.equalsIgnoreCase("true");
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87 logger.debug("Found module " + name + " " + localname);
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88 if (user == null || user.canUseFeature("module:" + name)) {
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89 modules.add(new DefaultModule(name, localname, selected));
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90 }
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91 }
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92 return modules.toArray(new Module[modules.size()]);
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93 }
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94 catch (ConnectionException ce) {
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95 logger.error(ce, ce);
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96 }
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97
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98 throw new ServerException(ERROR_NO_MODULES_FOUND);
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99 }
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100 }
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101
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102 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 tw=80 :
http://dive4elements.wald.intevation.org