Mercurial > dive4elements > river

annotate flys-artifacts/src/main/java/de/intevation/flys/artifacts/datacage/Recommendations.java @ 4255:670e98f5a441

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Fixed leak while merging facets. The ThemeList that is used by OutputHelper to sort the Facets for an Output now uses a list to store the ManagedFacets. The correct order is made up by sorting the List using Collections.sort() function of the Java JDK. Therfore, the ManagedFacet class implements the Comparable interface. The return value of its compareTo(other) method depends on the value of the 'position' field.
author Ingo Weinzierl <weinzierl.ingo@googlemail.com>
date Thu, 25 Oct 2012 14:01:46 +0200
parents 2b3c4abe034f
children cbd0fafcb26b
rev   line source
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1 package de.intevation.flys.artifacts.datacage;
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2
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3 import java.util.Map;
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4 import java.util.HashMap;
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5 import java.util.List;
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6 import java.util.ArrayList;
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7
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8 import java.io.InputStream;
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9 import java.io.IOException;
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10 import java.io.File;
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11
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12 import java.io.FileInputStream;
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13
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14 import java.sql.Connection;
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15 import java.sql.SQLException;
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16
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17 import org.apache.log4j.Logger;
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18
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19 import org.w3c.dom.Document;
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20 import org.w3c.dom.Node;
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21
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22 import org.hibernate.Session;
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23
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24 import org.hibernate.jdbc.Work;
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25
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26 import de.intevation.artifacts.common.utils.Config;
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27 import de.intevation.artifacts.common.utils.XMLUtils;
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28 import de.intevation.artifacts.common.utils.StringUtils;
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29
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30 import de.intevation.flys.artifacts.FLYSArtifact;
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31
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32 import de.intevation.flys.backend.SessionHolder;
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33
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34 import de.intevation.artifactdatabase.data.StateData;
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35
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36 import de.intevation.flys.artifacts.datacage.templating.Builder;
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37
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38
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39 /**
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40 * Also accessible as Singleton with getInstance().
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41 */
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42 public class Recommendations
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43 {
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44 private static Logger log = Logger.getLogger(Recommendations.class);
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45
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46 private static final boolean DEVELOPMENT_MODE =
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47 Boolean.getBoolean("flys.datacage.recommendations.development");
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48
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49 public static final String XPATH_TEMPLATE =
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50 "/artifact-database/metadata/template/text()";
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51
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52 public static final String DEFAULT_TEMPLATE_PATH =
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53 "${artifacts.config.dir}/meta-data.xml";
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54
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55 private static Recommendations INSTANCE;
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56
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57 public static class BuilderProvider
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58 {
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59 protected Builder builder;
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60
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61 public BuilderProvider() {
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62 }
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64 public BuilderProvider(Builder builder) {
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65 this.builder = builder;
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66 }
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67
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68 public Builder getBuilder() {
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69 return builder;
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70 }
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71 } // class BuilderProvider
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72
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73 public static class FileBuilderProvider
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74 extends BuilderProvider
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75 {
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76 protected File file;
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77 protected long lastModified;
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78
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79 public FileBuilderProvider() {
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80 }
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81
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82 public FileBuilderProvider(File file) {
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83 this.file = file;
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84 lastModified = Long.MIN_VALUE;
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85 }
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86
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87 @Override
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88 public synchronized Builder getBuilder() {
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89 long modified = file.lastModified();
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90 if (modified > lastModified) {
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91 lastModified = modified;
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92 try {
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93 Document template = loadTemplate(file);
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94 builder = new Builder(template);
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95 }
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96 catch (IOException ioe) {
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97 log.error(ioe);
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98 }
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99 }
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100 return builder;
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101 }
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102
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103 public BuilderProvider toStaticProvider() {
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104 return new BuilderProvider(builder);
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105 }
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106 } // class BuilderProvider
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107
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108 protected BuilderProvider builderProvider;
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109
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110 public Recommendations() {
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111 }
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112
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113 public Recommendations(BuilderProvider builderProvider) {
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114 this.builderProvider = builderProvider;
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115 }
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116
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117 public Builder getBuilder() {
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118 return builderProvider.getBuilder();
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119 }
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120
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121 protected static void artifactToParameters(
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122 FLYSArtifact artifact,
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123 Map<String, Object> parameters
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124 ) {
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125 parameters.put("CURRENT-STATE-ID", artifact.getCurrentStateId());
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126 parameters.put("ARTIFACT-ID", artifact.identifier());
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127
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128 for (StateData sd: artifact.getAllData()) {
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129 Object value = sd.getValue();
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parents:
diff changeset
130 if (value == null) {
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parents:
diff changeset
131 continue;
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parents:
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132 }
1716
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133 String key = sd.getName().replace('.', '-').toUpperCase();
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134 parameters.put(key, value);
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135 }
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parents:
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136 }
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137
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138 public static void convertKeysToUpperCase(
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139 Map<String, Object> src,
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140 Map<String, Object> dst
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141 ) {
3ca999f507b7 flys/issue314: Variables in datacage are now case insensitive.
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142 for (Map.Entry<String, Object> entry: src.entrySet()) {
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143 dst.put(entry.getKey().toUpperCase(), entry.getValue());
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144 }
3ca999f507b7 flys/issue314: Variables in datacage are now case insensitive.
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parents: 1046
diff changeset
145 }
3ca999f507b7 flys/issue314: Variables in datacage are now case insensitive.
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146
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147
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parents: 3076
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148 /**
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149 * Append recommendations to \param result.
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150 */
1015
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151 public void recommend(
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152 FLYSArtifact artifact,
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153 String userId,
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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154 String [] outs,
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parents:
diff changeset
155 Map<String, Object> extraParameters,
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
156 Node result
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parents:
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157 ) {
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158 Map<String, Object> parameters = new HashMap<String, Object>();
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parents:
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159
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diff changeset
160 if (extraParameters != null) {
1716
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parents: 1046
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161 convertKeysToUpperCase(extraParameters, parameters);
1015
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162 }
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163
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164 if (userId != null) {
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165 parameters.put("USER-ID", userId);
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166 }
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parents:
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167
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parents:
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168 if (artifact != null) {
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diff changeset
169 artifactToParameters(artifact, parameters);
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parents:
diff changeset
170 }
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parents:
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171
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172 parameters.put("ARTIFACT-OUTS", StringUtils.toUpperCase(outs));
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parents:
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173
1716
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diff changeset
174 parameters.put("PARAMETERS", parameters);
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175
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diff changeset
176 recommend(parameters, userId, result);
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
177 }
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178
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179
2b3c4abe034f Doc, TODO added.
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parents: 3076
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180 /**
2b3c4abe034f Doc, TODO added.
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parents: 3076
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181 * Append recommendations to \param result.
2b3c4abe034f Doc, TODO added.
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parents: 3076
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182 */
1015
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183 public void recommend(
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parents:
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184 Map<String, Object> parameters,
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parents:
diff changeset
185 String userId,
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
186 Node result
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parents:
diff changeset
187 ) {
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parents:
diff changeset
188 recommend(parameters, userId, result, SessionHolder.HOLDER.get());
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
189 }
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parents:
diff changeset
190
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
191 public void recommend(
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parents:
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192 final Map<String, Object> parameters,
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
193 final String userId,
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parents:
diff changeset
194 final Node result,
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diff changeset
195 Session session
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parents:
diff changeset
196 ) {
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197 session.doWork(new Work() {
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diff changeset
198 @Override
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199 public void execute(Connection systemConnection)
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parents:
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200 throws SQLException
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parents:
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201 {
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parents:
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202 List<Builder.NamedConnection> connections =
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203 new ArrayList<Builder.NamedConnection>(2);
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204
1046
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parents: 1030
diff changeset
205 Connection userConnection = userId != null
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parents: 1030
diff changeset
206 ? DBConfig
1015
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207 .getInstance()
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parents:
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208 .getDBConnection()
1046
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parents: 1030
diff changeset
209 .getDataSource()
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parents: 1030
diff changeset
210 .getConnection()
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1030
diff changeset
211 : null;
1015
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parents:
diff changeset
212
1046
0a5eff5511b1 Fixed flys/issue262: Unified user and system datacage template
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1030
diff changeset
213 try {
0a5eff5511b1 Fixed flys/issue262: Unified user and system datacage template
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parents: 1030
diff changeset
214 if (userConnection != null) {
1015
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parents:
diff changeset
215 connections.add(new Builder.NamedConnection(
1022
930a9ce24294 Datacage: Fixed caching issue leading to incorrect results.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1018
diff changeset
216 Builder.CONNECTION_USER, userConnection, false));
1046
0a5eff5511b1 Fixed flys/issue262: Unified user and system datacage template
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1030
diff changeset
217 }
1015
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
218
9a1a3080ad98 Bring user specific meta data service to life.
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parents:
diff changeset
219 connections.add(new Builder.NamedConnection(
1022
930a9ce24294 Datacage: Fixed caching issue leading to incorrect results.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1018
diff changeset
220 Builder.CONNECTION_SYSTEM, systemConnection, true));
1015
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parents:
diff changeset
221
1046
0a5eff5511b1 Fixed flys/issue262: Unified user and system datacage template
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parents: 1030
diff changeset
222 getBuilder().build(connections, result, parameters);
0a5eff5511b1 Fixed flys/issue262: Unified user and system datacage template
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1030
diff changeset
223 }
0a5eff5511b1 Fixed flys/issue262: Unified user and system datacage template
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1030
diff changeset
224 finally {
0a5eff5511b1 Fixed flys/issue262: Unified user and system datacage template
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1030
diff changeset
225 if (userConnection != null) {
0a5eff5511b1 Fixed flys/issue262: Unified user and system datacage template
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1030
diff changeset
226 userConnection.close();
0a5eff5511b1 Fixed flys/issue262: Unified user and system datacage template
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1030
diff changeset
227 }
1015
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parents:
diff changeset
228 }
9a1a3080ad98 Bring user specific meta data service to life.
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parents:
diff changeset
229 }
9a1a3080ad98 Bring user specific meta data service to life.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
230 });
9a1a3080ad98 Bring user specific meta data service to life.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
231 }
9a1a3080ad98 Bring user specific meta data service to life.
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parents:
diff changeset
232
3391
2b3c4abe034f Doc, TODO added.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents: 3076
diff changeset
233
2b3c4abe034f Doc, TODO added.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents: 3076
diff changeset
234 /** Get singleton instance. */
1015
9a1a3080ad98 Bring user specific meta data service to life.
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parents:
diff changeset
235 public static synchronized Recommendations getInstance() {
9a1a3080ad98 Bring user specific meta data service to life.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
236 if (INSTANCE == null) {
9a1a3080ad98 Bring user specific meta data service to life.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
237 INSTANCE = createRecommendations();
9a1a3080ad98 Bring user specific meta data service to life.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
238 }
9a1a3080ad98 Bring user specific meta data service to life.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
239 return INSTANCE;
9a1a3080ad98 Bring user specific meta data service to life.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
240 }
9a1a3080ad98 Bring user specific meta data service to life.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
241
3391
2b3c4abe034f Doc, TODO added.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents: 3076
diff changeset
242
1015
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
243 protected static Document loadTemplate(File file) throws IOException {
9a1a3080ad98 Bring user specific meta data service to life.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
244 InputStream in = null;
9a1a3080ad98 Bring user specific meta data service to life.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
245
9a1a3080ad98 Bring user specific meta data service to life.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
246 try {
9a1a3080ad98 Bring user specific meta data service to life.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
247 in = new FileInputStream(file);
9a1a3080ad98 Bring user specific meta data service to life.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
248
9a1a3080ad98 Bring user specific meta data service to life.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
249 Document template = XMLUtils.parseDocument(in);
9a1a3080ad98 Bring user specific meta data service to life.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
250
9a1a3080ad98 Bring user specific meta data service to life.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
251 if (template == null) {
9a1a3080ad98 Bring user specific meta data service to life.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
252 throw new IOException("cannot load template");
9a1a3080ad98 Bring user specific meta data service to life.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
253 }
9a1a3080ad98 Bring user specific meta data service to life.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
254 return template;
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parents:
diff changeset
255 }
9a1a3080ad98 Bring user specific meta data service to life.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
256 finally {
9a1a3080ad98 Bring user specific meta data service to life.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
257 if (in != null) {
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
258 try {
9a1a3080ad98 Bring user specific meta data service to life.
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parents:
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259 in.close();
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260 }
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261 catch (IOException ioe) {
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262 log.error(ioe);
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263 }
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264 }
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265 }
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266 }
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267
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268 public static Recommendations createRecommendations(File file) {
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269 log.debug("Recommendations.createBuilder");
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270
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271 if (!file.isFile() || !file.canRead()) {
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272 log.error("Cannot open template file '" + file + "'");
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273 return null;
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274 }
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275
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276 FileBuilderProvider fbp = new FileBuilderProvider(file);
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277
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278 if (fbp.getBuilder() == null) {
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279 log.error("failed loading builder");
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280 return null;
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281 }
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282
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283 BuilderProvider bp = DEVELOPMENT_MODE
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284 ? fbp
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285 : fbp.toStaticProvider();
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286
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287 return new Recommendations(bp);
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288 }
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289
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290 protected static Recommendations createRecommendations() {
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291 log.debug("Recommendations.createRecommendations");
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292
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293 String path = Config.getStringXPath(XPATH_TEMPLATE);
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294
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295 if (path == null) {
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296 path = DEFAULT_TEMPLATE_PATH;
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297 }
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298
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299 path = Config.replaceConfigDir(path);
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300
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301 log.info("Meta data template: " + path);
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302
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303 return createRecommendations(new File(path));
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304 }
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305 }
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306 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf-8 :
http://dive4elements.wald.intevation.org