Mercurial > dive4elements > river
annotate gwt-client/src/main/java/org/dive4elements/river/client/server/MetaDataServiceImpl.java @ 6837:9da2298ae380
(issue1353) Add river name to query for discharge Info
The previous assumption was that the official number is unique
for a gauge. This assumption is broken by having multiple variants
of a river in the database, like Donau (schleusenkanäle)
author | Andre Heinecke <aheinecke@intevation.de> |
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date | Thu, 15 Aug 2013 15:57:13 +0200 |
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children | 4b29bb2c785f |
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 import org.w3c.dom.Element; |
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13 |
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14 import org.apache.log4j.Logger; |
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15 |
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16 import com.google.gwt.user.server.rpc.RemoteServiceServlet; |
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17 |
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18 import org.dive4elements.artifacts.common.ArtifactNamespaceContext; |
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19 |
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20 import org.dive4elements.artifacts.common.utils.XMLUtils; |
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21 |
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22 import org.dive4elements.river.client.shared.exceptions.ServerException; |
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23 |
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24 import org.dive4elements.river.client.client.services.MetaDataService; |
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25 |
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26 import org.dive4elements.artifacts.httpclient.exceptions.ConnectionException; |
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27 |
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28 import org.dive4elements.artifacts.httpclient.http.HttpClient; |
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29 import org.dive4elements.artifacts.httpclient.http.HttpClientImpl; |
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30 |
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31 import org.dive4elements.river.client.shared.model.DataCageTree; |
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32 |
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33 import org.dive4elements.river.client.server.meta.Converter; |
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34 |
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35 /** |
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36 * Service that returns certain meta-data from the backends data, polished to |
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37 * inclusion into current project. |
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38 */ |
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39 public class MetaDataServiceImpl |
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40 extends RemoteServiceServlet |
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41 implements MetaDataService |
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42 { |
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43 /** Our very own logger. */ |
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44 private static final Logger logger = |
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45 Logger.getLogger(MetaDataServiceImpl.class); |
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46 |
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47 public static final String ERROR_NO_META_DATA_FOUND = |
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48 "error_no_meta_data_found"; |
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49 |
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50 |
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51 /** |
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52 * @param locale needed for i18n. |
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53 * @param artifactId ID of masterartifact (can be null) |
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54 * @param userId can be null |
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55 * @param outs can be null |
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56 * @param parameters can be null or parameters like "load-system:true;key:value" |
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57 */ |
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58 @Override |
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59 public DataCageTree getMetaData( |
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60 String locale, |
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61 String artifactId, |
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62 String userId, |
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63 String outs, |
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64 String parameters |
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65 ) throws ServerException |
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66 { |
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67 logger.info("MetaDataService.getMetaData"); |
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68 |
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69 // Create the query document. |
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70 String url = getServletContext().getInitParameter("server-url"); |
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71 |
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72 Document doc = XMLUtils.newDocument(); |
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73 |
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74 XMLUtils.ElementCreator ec = new XMLUtils.ElementCreator( |
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75 doc, |
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76 ArtifactNamespaceContext.NAMESPACE_URI, |
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77 ArtifactNamespaceContext.NAMESPACE_PREFIX); |
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78 |
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79 Element meta = ec.create("meta"); |
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80 |
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81 if (artifactId != null) { |
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82 Element artifactEl = ec.create("artifact-id"); |
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83 artifactEl.setAttribute("value", artifactId); |
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84 meta.appendChild(artifactEl); |
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85 } |
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86 |
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87 if (userId != null) { |
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88 Element userEl = ec.create("user-id"); |
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89 userEl.setAttribute("value", userId); |
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90 meta.appendChild(userEl); |
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91 } |
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92 |
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93 if (outs != null) { |
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94 Element outsEl = ec.create("outs"); |
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95 outsEl.setAttribute("value", outs); |
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96 meta.appendChild(outsEl); |
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97 } |
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98 |
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99 if (parameters != null) { |
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100 Element paramsEl = ec.create("parameters"); |
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101 paramsEl.setAttribute("value", parameters); |
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102 meta.appendChild(paramsEl); |
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103 } |
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104 |
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105 doc.appendChild(meta); |
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106 |
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107 // Fire. |
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108 HttpClient client = new HttpClientImpl(url, locale); |
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109 |
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110 try { |
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111 Converter converter = new Converter(); |
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112 return converter.convert(client.callService(url, "metadata", doc)); |
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113 } |
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114 catch (ConnectionException ce) { |
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115 ce.printStackTrace(); |
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116 } |
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117 |
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118 throw new ServerException(ERROR_NO_META_DATA_FOUND); |
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119 } |
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120 } |
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121 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : |