Mercurial > dive4elements > river

annotate flys-artifacts/src/main/java/de/intevation/flys/artifacts/datacage/Recommendations.java @ 2089:0da8874bd378

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Added initial state to map artifact to be able to advance and step back. The map artifact overrides describe() to have the complete UI information in the describe response document. flys-artifacts/trunk@3613 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Raimund Renkert <raimund.renkert@intevation.de>
date Fri, 06 Jan 2012 12:02:10 +0000
parents 3ca999f507b7
children 5642a83420f2
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 public class Recommendations
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39 {
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40 private static Logger log = Logger.getLogger(Recommendations.class);
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41
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42 private static final boolean DEVELOPMENT_MODE =
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43 Boolean.getBoolean("flys.datacage.recommendations.development");
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44
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45 public static final String XPATH_TEMPLATE =
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46 "/artifact-database/metadata/template/text()";
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47
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48 public static final String DEFAULT_TEMPLATE_PATH =
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49 "${artifacts.config.dir}/meta-data.xml";
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50
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51 private static Recommendations INSTANCE;
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52
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53 public static class BuilderProvider
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54 {
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55 protected Builder builder;
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56
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57 public BuilderProvider() {
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58 }
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59
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60 public BuilderProvider(Builder builder) {
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61 this.builder = builder;
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62 }
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63
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64 public Builder getBuilder() {
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65 return builder;
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66 }
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67 } // class BuilderProvider
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68
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69 public static class FileBuilderProvider
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70 extends BuilderProvider
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71 {
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72 protected File file;
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73 protected long lastModified;
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74
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75 public FileBuilderProvider() {
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76 }
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77
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78 public FileBuilderProvider(File file) {
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79 this.file = file;
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80 lastModified = Long.MIN_VALUE;
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81 }
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82
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83 @Override
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84 public synchronized Builder getBuilder() {
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85 long modified = file.lastModified();
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86 if (modified > lastModified) {
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87 lastModified = modified;
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88 try {
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89 Document template = loadTemplate(file);
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90 builder = new Builder(template);
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91 }
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92 catch (IOException ioe) {
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93 log.error(ioe);
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94 }
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95 }
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96 return builder;
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97 }
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98
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99 public BuilderProvider toStaticProvider() {
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100 return new BuilderProvider(builder);
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101 }
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102 } // class BuilderProvider
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103
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104 protected BuilderProvider builderProvider;
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105
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106 public Recommendations() {
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107 }
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108
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109 public Recommendations(BuilderProvider builderProvider) {
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110 this.builderProvider = builderProvider;
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111 }
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112
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113 public Builder getBuilder() {
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114 return builderProvider.getBuilder();
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115 }
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116
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117 protected static void artifactToParameters(
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118 FLYSArtifact artifact,
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119 Map<String, Object> parameters
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120 ) {
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121 parameters.put("CURRENT-STATE-ID", artifact.getCurrentStateId());
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122 parameters.put("ARTIFACT-ID", artifact.identifier());
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123
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124 for (StateData sd: artifact.getAllData()) {
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125 Object value = sd.getValue();
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126 if (value == null) {
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127 continue;
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128 }
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129 String key = sd.getName().replace('.', '-').toUpperCase();
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130 parameters.put(key, value);
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131 }
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132 }
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133
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134 public static void convertKeysToUpperCase(
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135 Map<String, Object> src,
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136 Map<String, Object> dst
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137 ) {
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138 for (Map.Entry<String, Object> entry: src.entrySet()) {
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139 dst.put(entry.getKey().toUpperCase(), entry.getValue());
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140 }
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141 }
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142
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143 public void recommend(
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144 FLYSArtifact artifact,
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145 String userId,
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146 String [] outs,
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147 Map<String, Object> extraParameters,
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148 Node result
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149 ) {
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150 Map<String, Object> parameters = new HashMap<String, Object>();
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151
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152 if (extraParameters != null) {
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153 convertKeysToUpperCase(extraParameters, parameters);
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154 }
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155
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156 if (userId != null) {
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157 parameters.put("USER-ID", userId);
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158 }
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159
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160 if (artifact != null) {
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161 artifactToParameters(artifact, parameters);
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162 }
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163
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164 parameters.put("ARTIFACT-OUTS", StringUtils.toUpperCase(outs));
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165
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166 parameters.put("PARAMETERS", parameters);
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167
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168 recommend(parameters, userId, result);
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169 }
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170
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171 public void recommend(
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172 Map<String, Object> parameters,
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173 String userId,
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174 Node result
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175 ) {
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176 recommend(parameters, userId, result, SessionHolder.HOLDER.get());
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177 }
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178
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179 public void recommend(
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180 final Map<String, Object> parameters,
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181 final String userId,
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182 final Node result,
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183 Session session
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184 ) {
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185 session.doWork(new Work() {
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186 @Override
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187 public void execute(Connection systemConnection)
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188 throws SQLException
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189 {
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190 List<Builder.NamedConnection> connections =
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191 new ArrayList<Builder.NamedConnection>(2);
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192
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193 Connection userConnection = userId != null
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194 ? DBConfig
1015
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195 .getInstance()
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196 .getDBConnection()
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197 .getDataSource()
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198 .getConnection()
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199 : null;
1015
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200
1046
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diff changeset
201 try {
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diff changeset
202 if (userConnection != null) {
1015
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diff changeset
203 connections.add(new Builder.NamedConnection(
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930a9ce24294 Datacage: Fixed caching issue leading to incorrect results.
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parents: 1018
diff changeset
204 Builder.CONNECTION_USER, userConnection, false));
1046
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diff changeset
205 }
1015
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parents:
diff changeset
206
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207 connections.add(new Builder.NamedConnection(
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930a9ce24294 Datacage: Fixed caching issue leading to incorrect results.
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parents: 1018
diff changeset
208 Builder.CONNECTION_SYSTEM, systemConnection, true));
1015
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diff changeset
209
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diff changeset
210 getBuilder().build(connections, result, parameters);
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diff changeset
211 }
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diff changeset
212 finally {
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diff changeset
213 if (userConnection != null) {
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diff changeset
214 userConnection.close();
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diff changeset
215 }
1015
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216 }
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diff changeset
217 }
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diff changeset
218 });
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parents:
diff changeset
219 }
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diff changeset
220
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221 public static synchronized Recommendations getInstance() {
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diff changeset
222 if (INSTANCE == null) {
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223 INSTANCE = createRecommendations();
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diff changeset
224 }
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225 return INSTANCE;
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226 }
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parents:
diff changeset
227
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228 protected static Document loadTemplate(File file) throws IOException {
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diff changeset
229 InputStream in = null;
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parents:
diff changeset
230
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diff changeset
231 try {
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diff changeset
232 in = new FileInputStream(file);
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parents:
diff changeset
233
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diff changeset
234 Document template = XMLUtils.parseDocument(in);
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parents:
diff changeset
235
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diff changeset
236 if (template == null) {
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diff changeset
237 throw new IOException("cannot load template");
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diff changeset
238 }
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parents:
diff changeset
239 return template;
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parents:
diff changeset
240 }
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parents:
diff changeset
241 finally {
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parents:
diff changeset
242 if (in != null) {
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
243 try {
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diff changeset
244 in.close();
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parents:
diff changeset
245 }
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parents:
diff changeset
246 catch (IOException ioe) {
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parents:
diff changeset
247 log.error(ioe);
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parents:
diff changeset
248 }
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parents:
diff changeset
249 }
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parents:
diff changeset
250 }
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parents:
diff changeset
251 }
9a1a3080ad98 Bring user specific meta data service to life.
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parents:
diff changeset
252
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diff changeset
253 public static Recommendations createRecommendations(File file) {
1015
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diff changeset
254 log.debug("Recommendations.createBuilder");
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parents:
diff changeset
255
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diff changeset
256 if (!file.isFile() || !file.canRead()) {
0a5eff5511b1 Fixed flys/issue262: Unified user and system datacage template
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parents: 1030
diff changeset
257 log.error("Cannot open template file '" + file + "'");
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258 return null;
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259 }
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260
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261 FileBuilderProvider fbp = new FileBuilderProvider(file);
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262
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263 if (fbp.getBuilder() == null) {
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264 log.error("failed loading builder");
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265 return null;
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266 }
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267
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268 BuilderProvider bp = DEVELOPMENT_MODE
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269 ? fbp
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270 : fbp.toStaticProvider();
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271
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272 return new Recommendations(bp);
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273 }
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274
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275 protected static Recommendations createRecommendations() {
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276 log.debug("Recommendations.createRecommendations");
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277
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278 String path = Config.getStringXPath(XPATH_TEMPLATE);
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279
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280 if (path == null) {
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281 path = DEFAULT_TEMPLATE_PATH;
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282 }
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283
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284 path = Config.replaceConfigDir(path);
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285
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286 log.info("Meta data template: " + path);
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287
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288 return createRecommendations(new File(path));
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289 }
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290 }
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291 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf-8 :
http://dive4elements.wald.intevation.org