Mercurial > dive4elements > river

annotate gwt-client/src/main/java/org/dive4elements/river/client/server/MetaDataServiceImpl.java @ 5861:172338b1407f

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GWT client: Added copyright header.
author Sascha L. Teichmann <teichmann@intevation.de>
date Sun, 28 Apr 2013 14:30:15 +0200
parents 5aa05a7a34b7
children ea9eef426962
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 :
http://dive4elements.wald.intevation.org