Mercurial > dive4elements > river

annotate flys-client/src/main/java/de/intevation/flys/client/server/RiverServiceImpl.java @ 3492:d45fcf70b994

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Don't display not allowed rivers to the user Only return rivers that the user is allowed to see. Evaluate the allowed features of the current logged in user and hide rivers which aren't mentioned in the features list. flys-client/trunk@5208 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Bjoern Ricks <bjoern.ricks@intevation.de>
date Wed, 15 Aug 2012 12:11:41 +0000
parents 0de61fc9d281
children 4825950acf1e
rev   line source
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44c63e7fd0d0 Added a service to list the supported rivers of the artifact server. The FLYS instance serves a method that retrieves this list.
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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.w3c.dom.Document;
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9 import org.w3c.dom.NodeList;
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10 import org.w3c.dom.Node;
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11
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12 import org.apache.log4j.Logger;
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15 import de.intevation.artifacts.common.ArtifactNamespaceContext;
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16 import de.intevation.artifacts.common.utils.XMLUtils;
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18 import de.intevation.artifacts.httpclient.exceptions.ConnectionException;
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19 import de.intevation.artifacts.httpclient.http.HttpClient;
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20 import de.intevation.artifacts.httpclient.http.HttpClientImpl;
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21
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22 import de.intevation.flys.client.shared.exceptions.ServerException;
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23 import de.intevation.flys.client.shared.model.DefaultRiver;
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24 import de.intevation.flys.client.shared.model.River;
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25 import de.intevation.flys.client.client.services.RiverService;
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27 import de.intevation.flys.client.server.auth.User;
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30 /**
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31 * This interface provides a method to list the supported rivers of the artifact
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32 * server.
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33 *
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34 * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a>
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35 */
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36 public class RiverServiceImpl
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37 extends RemoteServiceServlet
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38 implements RiverService
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39 {
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40 /** Private logger. */
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41 private static final Logger logger =
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42 Logger.getLogger(RiverServiceImpl.class);
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43
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44 /** The XPath string that points to the rivers in the resulting document.*/
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45 public static final String XPATH_RIVERS = "/art:rivers/art:river";
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47 /** The error message key that is thrown if an error occured while reading
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48 * the supported rivers from server.*/
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49 public static final String ERROR_NO_RIVERS_FOUND = "error_no_rivers_found";
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52 /** Get river list. */
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53 public River[] list(String locale)
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54 throws ServerException
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55 {
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56 String url = getServletContext().getInitParameter("server-url");
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57
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58 Document doc = XMLUtils.newDocument();
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60 XMLUtils.ElementCreator ec = new XMLUtils.ElementCreator(
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61 doc,
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62 ArtifactNamespaceContext.NAMESPACE_URI,
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63 ArtifactNamespaceContext.NAMESPACE_PREFIX);
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64
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65 doc.appendChild(ec.create("action"));
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66
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67 HttpClient client = new HttpClientImpl(url, locale);
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69 try {
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70 Document res = client.callService(url, "rivers", doc);
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72 NodeList rivers = (NodeList) XMLUtils.xpath(
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73 res,
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74 XPATH_RIVERS,
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75 XPathConstants.NODESET,
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76 ArtifactNamespaceContext.INSTANCE);
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77
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78 if (rivers == null || rivers.getLength() == 0) {
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79 throw new ServerException(ERROR_NO_RIVERS_FOUND);
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80 }
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81
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82 int count = rivers.getLength();
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83 int rcount = 0;
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84
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85 List<River> theRivers = new ArrayList<River>(count);
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86 User user = this.getUser();
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87
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88 for (int i = 0; i < count; i++) {
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89 Node tmp = rivers.item(i);
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90
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91 String name = XMLUtils.xpathString(
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92 tmp, "@art:name", ArtifactNamespaceContext.INSTANCE);
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93
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94 if (user.canUseFeature("river:" + name)) {
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95 theRivers.add(new DefaultRiver(name));
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96 rcount++;
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97 }
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98 }
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99
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100 return theRivers.toArray(new River[rcount]);
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101 }
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102 catch (ConnectionException ce) {
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103 logger.error(ce, ce);
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104 }
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105
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106 throw new ServerException(ERROR_NO_RIVERS_FOUND);
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44c63e7fd0d0 Added a service to list the supported rivers of the artifact server. The FLYS instance serves a method that retrieves this list.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
107 }
44c63e7fd0d0 Added a service to list the supported rivers of the artifact server. The FLYS instance serves a method that retrieves this list.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
108 }
44c63e7fd0d0 Added a service to list the supported rivers of the artifact server. The FLYS instance serves a method that retrieves this list.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
109 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org