Mercurial > dive4elements > river

annotate artifacts/src/main/java/org/dive4elements/river/artifacts/services/MetaDataService.java @ 8870:c26fb37899ca

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Introduced groups for modules. Modules marked with the same group-id, will be put together in the ui. Also using now the localization info from the server instead of localizing the modules again on the client side.
author gernotbelger
date Wed, 07 Feb 2018 11:59:13 +0100
parents 5e38e2924c07
children 5030c46d8cb4 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.artifacts.services;
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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 java.util.Map;
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16 import java.util.HashMap;
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17
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18 import org.dive4elements.artifacts.Artifact;
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19 import org.dive4elements.artifacts.CallMeta;
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20 import org.dive4elements.artifacts.GlobalContext;
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21 import org.dive4elements.artifacts.ArtifactDatabase;
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22 import org.dive4elements.artifacts.ArtifactDatabaseException;
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23
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24 import org.dive4elements.artifacts.common.utils.XMLUtils;
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25 import org.dive4elements.artifacts.common.utils.StringUtils;
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26
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27 import org.dive4elements.artifacts.common.ArtifactNamespaceContext;
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28
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29 import org.dive4elements.river.artifacts.datacage.Recommendations;
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30
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31 import org.dive4elements.river.artifacts.D4EArtifact;
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32
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33
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34 /**
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35 * Following XPaths are evaluated on the incoming document.
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36 *
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37 * "/art:meta/art:artifact-id/@value" The UUID of the artifact. Optional.
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38 * Used to fill the template enviroment.
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39 * "/art:meta/art:user-id/@value" The UUID of the user. Optional.
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40 * If given the user specific template is
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41 * filled.
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42 * "/art:meta/art:outs/@value" The list of outs used to recommend
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43 * for the
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44 * various outputs.
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45 * "/art:meta/art:parameters/@value" A list of key/value pairs to inject more
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46 * filters to the templating, as
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47 * "key:value;key2:value2"
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48 */
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49 public class MetaDataService
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50 extends D4EService
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51 {
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52 private static Logger log = Logger.getLogger(MetaDataService.class);
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53
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54 public static final String XPATH_ARTIFACT_ID =
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55 "/art:meta/art:artifact-id/@value";
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56 public static final String XPATH_USER_ID =
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57 "/art:meta/art:user-id/@value";
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58 public static final String XPATH_OUTS =
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59 "/art:meta/art:outs/@value";
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60 public static final String XPATH_PARAMETERS =
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61 "/art:meta/art:parameters/@value";
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62
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63 /** The global context key of the artifact database. */
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64 public static final String ARTIFACT_DATA_BASE_KEY =
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65 "global.artifact.database";
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66
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67 public MetaDataService() {
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68 }
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69
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70 @Override
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71 protected Document doProcess(
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72 Document data,
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73 GlobalContext globalContext,
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74 CallMeta callMeta
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75 ) {
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76 log.debug("MetaDataService.process");
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77
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78 String artifactId = XMLUtils.xpathString(
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79 data, XPATH_ARTIFACT_ID, ArtifactNamespaceContext.INSTANCE);
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80
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81 if (artifactId != null
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82 && (artifactId = artifactId.trim()).length() == 0) {
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83 artifactId = null;
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84 }
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85
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86 String userId = XMLUtils.xpathString(
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87 data, XPATH_USER_ID, ArtifactNamespaceContext.INSTANCE);
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88
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89 if (userId != null
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90 && (userId = userId.trim()).length() == 0) {
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91 userId = null;
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92 }
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93
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94 String outs = XMLUtils.xpathString(
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95 data, XPATH_OUTS, ArtifactNamespaceContext.INSTANCE);
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96
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97 String parameters = XMLUtils.xpathString(
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98 data, XPATH_PARAMETERS, ArtifactNamespaceContext.INSTANCE);
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99
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100 return doService(
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101 artifactId, userId, outs, parameters, globalContext);
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102 }
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103
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104
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105 /**
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106 * Split parameterstring in the form of key1:value1;key2:value2
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107 * into hash (key1->value1, key2->value2).
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108 * @param parameters "key1:value1;key2:value2"
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109 * @param data Map into wich to put parameter hash and return.
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110 * @return parameter data
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111 */
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112 protected static Map<String, Object> splitParameters(
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113 String parameters,
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114 Map<String, Object> data
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115 ) {
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116 if (parameters != null) {
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117 String [] parts = parameters.split("\\s*;\\s*");
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118 for (String part: parts) {
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119 String [] kv = part.split("\\s*:\\s*");
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120 if (kv.length < 2 || (kv[0] = kv[0].trim()).length() == 0) {
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121 continue;
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122 }
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123 String [] values = kv[1].split("\\s*,\\s*");
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124 data.put(kv[0], values.length == 1 ? values[0] : values);
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125 }
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126 }
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127 return data;
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128 }
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129
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130 /** Return the document containing matched stuff from meta-data.xml. */
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131 protected Document doService(
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132 String artifactId,
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133 String userId,
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134 String outsString,
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135 String parameters,
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136 GlobalContext globalContext
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137 ) {
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138 Document result = XMLUtils.newDocument();
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139
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140 D4EArtifact flysArtifact;
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141
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142 if (log.isDebugEnabled()) {
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143 log.debug("artifact : " + artifactId);
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144 log.debug("user : " + userId);
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145 log.debug("outs : " + outsString);
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146 log.debug("parameters: " + parameters);
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147 }
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148
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149 if (userId != null && !StringUtils.checkUUID(userId)) {
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150 log.warn("'" + userId + "' is not a UUID");
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151 return result;
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152 }
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153
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154 if (artifactId != null) {
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155 if (!StringUtils.checkUUID(artifactId)) {
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156 log.warn("'" + artifactId + "' is not a UUID");
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157 return result;
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158 }
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159
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160 Object dbObject =
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161 (ArtifactDatabase)globalContext.get(ARTIFACT_DATA_BASE_KEY);
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162
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163 if (!(dbObject instanceof ArtifactDatabase)) {
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164 log.error("Cannot find artifact database");
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165 return result;
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166 }
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167
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168 ArtifactDatabase db = (ArtifactDatabase)dbObject;
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169
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170 Artifact artifact;
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171
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172 try {
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173 artifact = db.getRawArtifact(artifactId);
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174 }
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175 catch (ArtifactDatabaseException adbe) {
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176 log.warn("fetching artifact failed", adbe);
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177 return result;
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178 }
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179
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180 if (!(artifact instanceof D4EArtifact)) {
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181 log.warn("artifact is not a D4E artifact.");
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182 return result;
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183 }
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184
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185 flysArtifact = (D4EArtifact)artifact;
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186 }
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187 else {
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188 flysArtifact = null;
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189 }
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190
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191
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192 Map<String, Object> data = splitParameters(
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193 parameters, new HashMap<String, Object>());
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194
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195 String [] outs = outsString == null
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196 ? new String [0]
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197 : outsString.split("\\s*,\\s*");
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198
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199 Recommendations rec = Recommendations.getInstance();
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200 rec.recommend(
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201 flysArtifact, userId, outs, data, result);
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202
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203 return result;
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204 }
372
fc3cf0ef777e Added meta data service.
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parents:
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205 }
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206 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org