Mercurial > dive4elements > river

annotate flys-client/src/main/java/de/intevation/flys/client/server/MetaDataServiceImpl.java @ 5818:a4ff4167be1e

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Request feature info on all layers and show it as html if the server does not return valid gml. Non queryable layers produce an error message when the request fails. This is good enough
author Andre Heinecke <aheinecke@intevation.de>
date Wed, 24 Apr 2013 17:33:27 +0200
parents 2dac0e5b927e
children
rev   line source
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1 package de.intevation.flys.client.server;
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3 import org.w3c.dom.Document;
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4 import org.w3c.dom.Element;
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5
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6 import org.apache.log4j.Logger;
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8 import com.google.gwt.user.server.rpc.RemoteServiceServlet;
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10 import de.intevation.artifacts.common.ArtifactNamespaceContext;
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11
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12 import de.intevation.artifacts.common.utils.XMLUtils;
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13
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14 import de.intevation.flys.client.shared.exceptions.ServerException;
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15
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16 import de.intevation.flys.client.client.services.MetaDataService;
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18 import de.intevation.artifacts.httpclient.exceptions.ConnectionException;
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19
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20 import de.intevation.artifacts.httpclient.http.HttpClient;
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21 import de.intevation.artifacts.httpclient.http.HttpClientImpl;
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23 import de.intevation.flys.client.shared.model.DataCageTree;
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25 import de.intevation.flys.client.server.meta.Converter;
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26
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27 /**
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28 * Service that returns certain meta-data from the backends data, polished to
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29 * inclusion into current project.
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30 */
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31 public class MetaDataServiceImpl
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32 extends RemoteServiceServlet
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33 implements MetaDataService
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34 {
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35 /** Our very own logger. */
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36 private static final Logger logger =
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37 Logger.getLogger(MetaDataServiceImpl.class);
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39 public static final String ERROR_NO_META_DATA_FOUND =
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40 "error_no_meta_data_found";
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41
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42
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43 /**
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44 * @param locale needed for i18n.
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45 * @param artifactId ID of masterartifact (can be null)
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46 * @param userId can be null
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47 * @param outs can be null
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48 * @param parameters can be null or parameters like "load-system:true;key:value"
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49 */
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50 @Override
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51 public DataCageTree getMetaData(
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52 String locale,
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53 String artifactId,
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54 String userId,
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55 String outs,
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56 String parameters
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57 ) throws ServerException
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58 {
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59 logger.info("MetaDataService.getMetaData");
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60
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61 // Create the query document.
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62 String url = getServletContext().getInitParameter("server-url");
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63
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64 Document doc = XMLUtils.newDocument();
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65
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66 XMLUtils.ElementCreator ec = new XMLUtils.ElementCreator(
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67 doc,
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68 ArtifactNamespaceContext.NAMESPACE_URI,
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69 ArtifactNamespaceContext.NAMESPACE_PREFIX);
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70
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71 Element meta = ec.create("meta");
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72
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73 if (artifactId != null) {
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74 Element artifactEl = ec.create("artifact-id");
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75 artifactEl.setAttribute("value", artifactId);
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76 meta.appendChild(artifactEl);
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77 }
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78
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79 if (userId != null) {
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80 Element userEl = ec.create("user-id");
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81 userEl.setAttribute("value", userId);
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82 meta.appendChild(userEl);
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83 }
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84
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85 if (outs != null) {
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86 Element outsEl = ec.create("outs");
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87 outsEl.setAttribute("value", outs);
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88 meta.appendChild(outsEl);
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89 }
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90
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91 if (parameters != null) {
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92 Element paramsEl = ec.create("parameters");
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93 paramsEl.setAttribute("value", parameters);
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94 meta.appendChild(paramsEl);
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95 }
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96
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97 doc.appendChild(meta);
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98
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99 // Fire.
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100 HttpClient client = new HttpClientImpl(url, locale);
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101
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102 try {
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103 Converter converter = new Converter();
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104 return converter.convert(client.callService(url, "metadata", doc));
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105 }
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106 catch (ConnectionException ce) {
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107 ce.printStackTrace();
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108 }
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109
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110 throw new ServerException(ERROR_NO_META_DATA_FOUND);
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111 }
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112 }
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113 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org