Mercurial > dive4elements > river
annotate gwt-client/src/main/java/org/dive4elements/river/client/server/GetArtifactServiceImpl.java @ 8230:f54c4b858213
(issue1448) Extend SedimentLoadInfo request to handle sq time intervals
author | Andre Heinecke <andre.heinecke@intevation.de> |
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date | Mon, 08 Sep 2014 16:23:38 +0200 |
parents | 238fc722f87a |
children | 0a5239a1e46e |
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.w3c.dom.Document; |
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12 |
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13 import org.apache.log4j.Logger; |
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14 |
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15 import com.google.gwt.user.server.rpc.RemoteServiceServlet; |
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16 |
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17 import org.dive4elements.artifacts.common.ArtifactNamespaceContext; |
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18 import org.dive4elements.artifacts.common.utils.ClientProtocolUtils; |
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19 import org.dive4elements.artifacts.common.utils.XMLUtils; |
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20 |
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21 import org.dive4elements.artifacts.httpclient.exceptions.ConnectionException; |
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22 import org.dive4elements.artifacts.httpclient.http.HttpClient; |
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23 import org.dive4elements.artifacts.httpclient.http.HttpClientImpl; |
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24 import org.dive4elements.artifacts.httpclient.http.response.DocumentResponseHandler; |
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25 |
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26 import org.dive4elements.river.client.shared.exceptions.ServerException; |
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27 import org.dive4elements.river.client.shared.model.Artifact; |
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28 import org.dive4elements.river.client.client.services.GetArtifactService; |
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29 |
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30 |
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31 /** |
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32 * This service provides a method that returns an artifact based on its |
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33 * identifier. |
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34 * |
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35 * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a> |
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36 */ |
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37 public class GetArtifactServiceImpl |
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38 extends RemoteServiceServlet |
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39 implements GetArtifactService |
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40 { |
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41 private static final Logger log = |
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42 Logger.getLogger(GetArtifactServiceImpl.class); |
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43 |
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44 |
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45 public static final String ERROR_DESCRIBE_ARTIFACT = |
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46 "error_describe_artifact"; |
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47 |
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48 public static final String XPATH_RESULT = "/art:result/text()"; |
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49 |
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50 public static final String OPERATION_FAILURE = "FAILED"; |
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51 |
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52 |
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53 public Artifact getArtifact( |
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54 String locale, |
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55 String uuid, |
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56 String hash) |
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57 throws ServerException |
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58 { |
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59 log.info("GetArtifactServiceImpl.getArtifact"); |
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60 |
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61 String url = getServletContext().getInitParameter("server-url"); |
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62 |
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63 Document describe = ClientProtocolUtils.newDescribeDocument( |
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64 uuid, hash, true); |
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65 |
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66 HttpClient client = new HttpClientImpl(url, locale); |
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67 |
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68 try { |
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69 Document description = (Document) client.describe( |
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70 new org.dive4elements.artifacts.httpclient.objects.Artifact( |
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71 uuid, hash), |
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72 describe, |
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73 new DocumentResponseHandler()); |
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74 |
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75 if (description == null) { |
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76 throw new ServerException(ERROR_DESCRIBE_ARTIFACT); |
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77 } |
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78 |
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79 String result = XMLUtils.xpathString( |
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80 description, |
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81 XPATH_RESULT, |
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82 ArtifactNamespaceContext.INSTANCE); |
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83 |
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84 if (result == null || !result.equals(OPERATION_FAILURE)) { |
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85 return (Artifact) new FLYSArtifactCreator().create(description); |
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86 } |
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87 } |
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88 catch (ConnectionException ce) { |
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89 log.error(ce, ce); |
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90 } |
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91 |
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92 throw new ServerException(ERROR_DESCRIBE_ARTIFACT); |
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93 } |
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94 } |
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95 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : |