Mercurial > dive4elements > river

annotate gwt-client/src/main/java/org/dive4elements/river/client/server/MetaDataServiceImpl.java @ 9709:b74f817435fe

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comment removed
author dnt_bjoernsen <d.tironi@bjoernsen.de>
date Wed, 27 Jan 2021 11:47:38 +0100
parents b188255f08b3
children
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 java.util.Iterator;
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12 import java.util.List;
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13
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14 import org.apache.log4j.Logger;
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15 import org.dive4elements.artifacts.common.ArtifactNamespaceContext;
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16 import org.dive4elements.artifacts.common.utils.XMLUtils;
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17 import org.dive4elements.artifacts.httpclient.exceptions.ConnectionException;
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18 import org.dive4elements.artifacts.httpclient.http.HttpClient;
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19 import org.dive4elements.artifacts.httpclient.http.HttpClientImpl;
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20 import org.dive4elements.river.client.client.services.MetaDataService;
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21 import org.dive4elements.river.client.server.auth.User;
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22 import org.dive4elements.river.client.server.meta.Converter;
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23 import org.dive4elements.river.client.shared.exceptions.ServerException;
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24 import org.dive4elements.river.client.shared.model.AttrList;
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25 import org.dive4elements.river.client.shared.model.DataCageNode;
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26 import org.dive4elements.river.client.shared.model.DataCageTree;
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27 import org.w3c.dom.Document;
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28 import org.w3c.dom.Element;
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29
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30 /**
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31 * Service that returns certain meta-data from the backends data, polished to
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32 * inclusion into current project.
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33 */
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34 public class MetaDataServiceImpl extends RemoteServiceServlet implements MetaDataService {
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35
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36 private static final long serialVersionUID = 1L;
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37
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38 /** Our very own log. */
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39 private static final Logger log = Logger.getLogger(MetaDataServiceImpl.class);
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40
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41 private static final String ERROR_NO_META_DATA_FOUND = "error_no_meta_data_found";
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42
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43 private static final class Prune {
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44 private final User user;
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45
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46 public Prune(final User user) {
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47 this.user = user;
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48 }
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49
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50 void execute(final DataCageTree tree) {
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51
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52 final DataCageNode root = tree.getRoot();
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53
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54 if (root == null || !root.hasChildren())
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55 return;
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56
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57 recursivePrune(root);
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58 }
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59
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60 private boolean recursivePrune(final DataCageNode node) {
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61
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62 /* filter by user - features */
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63 if (!acceptUserFeatures(node))
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64 return false;
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65
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66 /* recursively check all leafs, we only accepts real ones that have a factory */
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67 if (!node.hasChildren())
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68 return acceptLeaf(node);
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69
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70 final List<DataCageNode> children = node.getChildren();
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71
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72 for (final Iterator<DataCageNode> iterator = children.iterator(); iterator.hasNext();) {
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73 final DataCageNode dataCageNode = iterator.next();
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74
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75 if (!recursivePrune(dataCageNode))
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76 iterator.remove();
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77 }
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78
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79 return !children.isEmpty();
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80 }
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81
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82 private boolean acceptUserFeatures(final DataCageNode node) {
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83 final AttrList al = node.getAttributes();
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84 if (al == null)
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85 return true;
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86
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87 final String module = al.getValue("module");
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88 if (module == null)
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89 return true;
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90
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91 if (this.user == null || this.user.canUseFeature("module:" + module))
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92 return true;
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93
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94 return false;
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95 }
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96
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97 private boolean acceptLeaf(final DataCageNode node) {
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98 final AttrList al = node.getAttributes();
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99 if (al == null)
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100 return false;
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101
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102 return al.hasAttribute("factory");
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103 }
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104 }
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105
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106 /**
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107 * @param locale
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108 * needed for i18n.
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109 * @param artifactId
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110 * ID of masterartifact (can be null)
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111 * @param userId
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112 * can be null
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113 * @param outs
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114 * can be null
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115 * @param parameters
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116 * can be null or parameters like
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117 * "load-system:true;key:value"
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118 */
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119 @Override
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120 public DataCageTree getMetaData(final String locale, final String artifactId, final String userId, final String outs, final String parameters)
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121 throws ServerException {
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122 log.info("MetaDataService.getMetaData");
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123
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124 // Create the query document.
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125 final String url = getServletContext().getInitParameter("server-url");
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126
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127 final Document doc = XMLUtils.newDocument();
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128
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129 final XMLUtils.ElementCreator ec = new XMLUtils.ElementCreator(doc, ArtifactNamespaceContext.NAMESPACE_URI, ArtifactNamespaceContext.NAMESPACE_PREFIX);
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130
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131 final Element meta = ec.create("meta");
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132
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133 if (artifactId != null) {
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134 final Element artifactEl = ec.create("artifact-id");
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135 artifactEl.setAttribute("value", artifactId);
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136 meta.appendChild(artifactEl);
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137 }
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138
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139 if (userId != null) {
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140 final Element userEl = ec.create("user-id");
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141 userEl.setAttribute("value", userId);
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142 meta.appendChild(userEl);
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143 }
276
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144
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145 if (outs != null) {
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146 final Element outsEl = ec.create("outs");
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147 outsEl.setAttribute("value", outs);
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148 meta.appendChild(outsEl);
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149 }
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150
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151 if (parameters != null) {
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152 final Element paramsEl = ec.create("parameters");
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153 paramsEl.setAttribute("value", parameters);
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154 meta.appendChild(paramsEl);
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155 }
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156
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157 doc.appendChild(meta);
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158
1442
4a6814be92ba Cosmetics, doc.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
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159 // Fire.
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160 final HttpClient client = new HttpClientImpl(url, locale);
276
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161
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162 try {
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163 final User user = getUser();
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164
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165 final Converter converter = new Converter();
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166 final DataCageTree tree = converter.convert(client.callService(url, "metadata", doc));
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167
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168 new Prune(user).execute(tree);
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169
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170 return tree;
276
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171 }
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172 catch (final ConnectionException ce) {
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173 ce.printStackTrace();
276
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174 }
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175
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176 throw new ServerException(ERROR_NO_META_DATA_FOUND);
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parents:
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177 }
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178 }
http://dive4elements.wald.intevation.org