Mercurial > dive4elements > river

annotate artifacts/src/main/java/org/dive4elements/river/artifacts/datacage/Recommendations.java @ 9726:0a5239a1e46e 3.2.x

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Upgrade to Log4j 2
author Tom Gottfried <tom@intevation.de>
date Wed, 02 Mar 2022 10:26:50 +0100
parents 468d9ebda4ce
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.artifacts.datacage;
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10
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11 import java.util.Map;
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12 import java.util.HashMap;
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13 import java.util.List;
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14 import java.util.ArrayList;
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15
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16 import java.io.InputStream;
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17 import java.io.IOException;
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18 import java.io.File;
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19
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20 import java.io.FileInputStream;
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21
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22 import java.sql.Connection;
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23 import java.sql.SQLException;
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24
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25 import org.apache.logging.log4j.Logger;
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26 import org.apache.logging.log4j.LogManager;
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27
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28 import org.w3c.dom.Document;
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29 import org.w3c.dom.Node;
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30
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31 import org.hibernate.Session;
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32 import org.hibernate.SessionFactory;
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33
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34 import org.hibernate.jdbc.Work;
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35
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36 import org.dive4elements.artifacts.common.utils.Config;
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37 import org.dive4elements.artifacts.common.utils.XMLUtils;
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38 import org.dive4elements.artifacts.common.utils.StringUtils;
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39
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40 import org.dive4elements.river.artifacts.D4EArtifact;
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41
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42 import org.dive4elements.river.backend.SessionFactoryProvider;
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43 import org.dive4elements.river.backend.SessionHolder;
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44
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45 import org.dive4elements.artifactdatabase.data.StateData;
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46
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47 import org.dive4elements.river.artifacts.datacage.templating.Builder;
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48 import org.dive4elements.river.artifacts.datacage.templating.BuilderPool;
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49 import org.dive4elements.river.artifacts.model.OfficialLineFinder;
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50
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51
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52 /**
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53 * Also accessible as Singleton with getInstance().
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54 */
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55 public class Recommendations
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56 {
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57 public static final String CONNECTION_USER = "user";
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58 public static final String CONNECTION_SYSTEM = "system";
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59 public static final String CONNECTION_SEDDB = "seddb";
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60
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61 public static final String DEFAULT_CONNECTION_NAME = CONNECTION_SYSTEM;
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62
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63 private static Logger log = LogManager.getLogger(Recommendations.class);
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64
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65 private static final boolean DEVELOPMENT_MODE =
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66 Boolean.getBoolean("flys.datacage.recommendations.development");
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67
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68 public static final String XPATH_TEMPLATE =
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69 "/artifact-database/metadata/template/text()";
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70
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71 public static final String DEFAULT_TEMPLATE_PATH =
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72 "${artifacts.config.dir}/meta-data.xml";
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73
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74 private static Recommendations INSTANCE;
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75
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76 public static class BuilderPoolProvider
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77 {
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78 protected BuilderPool builderPool;
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79
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80 public BuilderPoolProvider() {
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81 }
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82
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83 public BuilderPoolProvider(BuilderPool builderPool) {
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84 this.builderPool = builderPool;
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85 }
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86
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87 public BuilderPool getBuilderPool() {
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88 return builderPool;
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89 }
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90 } // class BuilderProvider
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91
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92 public static class FileBuilderPoolProvider
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93 extends BuilderPoolProvider
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94 {
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95 protected File file;
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96 protected long lastModified;
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97
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98 public FileBuilderPoolProvider() {
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99 }
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100
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101 public FileBuilderPoolProvider(File file) {
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102 this.file = file;
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103 lastModified = Long.MIN_VALUE;
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104 }
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105
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106 @Override
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107 public synchronized BuilderPool getBuilderPool() {
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108 long modified = file.lastModified();
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109 if (modified > lastModified) {
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110 lastModified = modified;
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111 try {
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112 Document template = loadTemplate(file);
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113 builderPool = new BuilderPool(template);
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114 }
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115 catch (IOException ioe) {
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116 log.error(ioe);
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117 }
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118 }
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119 return builderPool;
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120 }
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121
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122 public BuilderPoolProvider toStaticProvider() {
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123 return new BuilderPoolProvider(builderPool);
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124 }
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125 } // class BuilderProvider
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126
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127 protected BuilderPoolProvider builderPoolProvider;
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128
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129 public Recommendations() {
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130 }
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131
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132 public Recommendations(BuilderPoolProvider builderPoolProvider) {
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133 this.builderPoolProvider = builderPoolProvider;
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134 }
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135
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136 public BuilderPool getBuilderPool() {
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137 return builderPoolProvider.getBuilderPool();
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138 }
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139
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140 protected static void artifactToParameters(
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141 D4EArtifact artifact,
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142 Map<String, Object> parameters
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143 ) {
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144 parameters.put("CURRENT-STATE-ID", artifact.getCurrentStateId());
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145 parameters.put("ARTIFACT-ID", artifact.identifier());
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146 parameters.put("ARTIFACT-NAME", artifact.getName());
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147
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148 for (StateData sd: artifact.getAllData()) {
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149 Object value = sd.getValue();
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150 if (value == null) {
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151 continue;
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152 }
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153 String key = sd.getName().replace('.', '-').toUpperCase();
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154 parameters.put(key, value);
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155 }
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156
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157 // XXX: THIS IS THE HACK TO BRING THE OFFICIAL LINES INTO THE DATACAGE!
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158 parameters.put(
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159 "OFFICIAL-LINES", OfficialLineFinder.findOfficialLines(artifact));
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160 }
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161
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162 /**
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163 * Put Key/Values from \param src to \param dst, but uppercase
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164 * both Keys and Values.
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165 */
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166 public static void convertKeysToUpperCase(
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167 Map<String, Object> src,
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168 Map<String, Object> dst
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169 ) {
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170 for (Map.Entry<String, Object> entry: src.entrySet()) {
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171 dst.put(entry.getKey().toUpperCase(), entry.getValue());
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172 }
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173 }
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174
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175
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176 /**
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177 * Append recommendations to \param result.
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178 * @param extraParameters parameters (typical example: 'recommended')
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179 */
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180 public void recommend(
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181 D4EArtifact artifact,
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182 String userId,
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183 String [] outs,
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184 Map<String, Object> extraParameters,
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185 Node result
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186 ) {
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187 Map<String, Object> parameters = new HashMap<String, Object>();
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188
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189 if (extraParameters != null) {
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190 convertKeysToUpperCase(extraParameters, parameters);
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191 }
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192
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193 if (userId != null) {
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194 parameters.put("USER-ID", userId);
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195 }
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196
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197 if (artifact != null) {
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198 artifactToParameters(artifact, parameters);
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199 }
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200
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201 parameters.put("ARTIFACT-OUTS", StringUtils.toUpperCase(outs));
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202
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203 parameters.put("PARAMETERS", parameters);
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204
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205 recommend(parameters, userId, result);
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206 }
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207
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208
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209 /**
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210 * Append recommendations to \param result.
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211 */
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212 public void recommend(
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213 Map<String, Object> parameters,
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214 String userId,
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215 Node result
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216 ) {
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217 recommend(parameters, userId, result, SessionHolder.HOLDER.get());
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218 }
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219
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220 public void recommend(
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221 final Map<String, Object> parameters,
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222 final String userId,
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223 final Node result,
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224 Session systemSession
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225 ) {
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226 systemSession.doWork(new Work() {
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227 @Override
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228 public void execute(final Connection systemConnection)
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229 throws SQLException
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230 {
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231 SessionFactory sedDBFactory =
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232 SessionFactoryProvider.getSedDBSessionFactory();
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233
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234 Session sedDBSession = sedDBFactory.openSession();
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235 try {
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236 sedDBSession.doWork(new Work() {
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237 @Override
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238 public void execute(Connection sedDBConnection)
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239 throws SQLException
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240 {
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241 recommend(
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242 parameters, userId, result,
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243 systemConnection,
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244 sedDBConnection);
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245 }
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246 });
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247 }
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248 finally {
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249 sedDBSession.close();
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250 }
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251 }
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252 });
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253 }
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254
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255 public void recommend(
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256 Map<String, Object> parameters,
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257 String userId,
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258 Node result,
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259 Connection systemConnection,
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260 Connection seddbConnection
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261 ) throws SQLException
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262 {
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263 List<Builder.NamedConnection> connections =
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264 new ArrayList<Builder.NamedConnection>(3);
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265
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266 Connection userConnection = userId != null
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267 || parameters.containsKey("ARTIFACT-ID")
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268 ? DBConfig
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269 .getInstance()
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270 .getDBConnection()
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271 .getDataSource()
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272 .getConnection()
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273 : null;
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274
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275 try {
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276 connections.add(new Builder.NamedConnection(
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277 CONNECTION_SYSTEM, systemConnection, true));
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278
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279 if (seddbConnection != null) {
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280 connections.add(new Builder.NamedConnection(
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281 CONNECTION_SEDDB, seddbConnection, true));
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282 }
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283
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284 if (userConnection != null) {
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285 connections.add(new Builder.NamedConnection(
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286 CONNECTION_USER, userConnection, false));
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287 }
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288
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289 getBuilderPool().build(connections, result, parameters);
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290 }
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291 finally {
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292 if (userConnection != null) {
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293 userConnection.close();
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294 }
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295 }
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296 }
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297
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298 /** Get singleton instance. */
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299 public static synchronized Recommendations getInstance() {
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300 if (INSTANCE == null) {
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301 INSTANCE = createRecommendations();
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302 }
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303 return INSTANCE;
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304 }
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305
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306
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307 protected static Document loadTemplate(File file) throws IOException {
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308 InputStream in = new FileInputStream(file);
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309
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310 try {
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311 Document template = XMLUtils.parseDocument(in);
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312 if (template == null) {
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313 throw new IOException("cannot load template");
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314 }
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315 return template;
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316 }
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317 finally {
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318 in.close();
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319 }
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320 }
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321
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322 public static Recommendations createRecommendations(File file) {
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323 log.debug("Recommendations.createBuilder");
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324
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325 if (!file.isFile() || !file.canRead()) {
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326 log.error("Cannot open template file '" + file + "'");
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327 return null;
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328 }
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329
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330 FileBuilderPoolProvider fbp = new FileBuilderPoolProvider(file);
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331
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332 if (fbp.getBuilderPool() == null) {
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333 log.error("failed loading builder");
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334 return null;
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335 }
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336
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337 BuilderPoolProvider bp = DEVELOPMENT_MODE
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338 ? fbp
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339 : fbp.toStaticProvider();
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340
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341 return new Recommendations(bp);
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342 }
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343
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344 protected static Recommendations createRecommendations() {
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345 log.debug("Recommendations.createRecommendations");
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346
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347 String path = Config.getStringXPath(XPATH_TEMPLATE);
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348
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349 if (path == null) {
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350 path = DEFAULT_TEMPLATE_PATH;
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351 }
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352
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353 path = Config.replaceConfigDir(path);
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354
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355 log.info("Meta data template: " + path);
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356
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357 return createRecommendations(new File(path));
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358 }
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359 }
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360 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf-8 :
http://dive4elements.wald.intevation.org