Mercurial > dive4elements > river
annotate artifacts/src/main/java/org/dive4elements/river/artifacts/datacage/Recommendations.java @ 9801:1d7a72a50183 3.2.x tip
Assume Compose V2, consistently
author | Tom Gottfried <tom@intevation.de> |
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date | Thu, 23 Nov 2023 10:14:13 +0100 |
parents | 0a5239a1e46e |
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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 |
9726 | 25 import org.apache.logging.log4j.Logger; |
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 |
9726 | 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 : |