Mercurial > dive4elements > river

annotate flys-artifacts/src/main/java/de/intevation/flys/artifacts/datacage/Recommendations.java @ 1017:8637756275e5

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Added a <dc:comment> tag to place comments in the meta data templates. flys-artifacts/trunk@2463 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Sascha L. Teichmann <sascha.teichmann@intevation.de>
date Thu, 04 Aug 2011 10:58:00 +0000
parents 9a1a3080ad98
children d42fa223be48
rev   line source
1015
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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 javax.sql.DataSource;
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18
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19 import org.apache.log4j.Logger;
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20
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21 import org.w3c.dom.Document;
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22 import org.w3c.dom.Node;
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23
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24 import org.hibernate.Session;
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25
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26 import org.hibernate.jdbc.Work;
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27
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28 import de.intevation.artifacts.common.utils.Config;
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29 import de.intevation.artifacts.common.utils.XMLUtils;
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30
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31 import de.intevation.flys.artifacts.FLYSArtifact;
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32
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33 import de.intevation.flys.backend.SessionHolder;
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34
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35 import de.intevation.artifactdatabase.data.StateData;
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36
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37 import de.intevation.flys.artifacts.datacage.templating.Builder;
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38
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39 public class Recommendations
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40 {
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41 private static Logger log = Logger.getLogger(Recommendations.class);
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42
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43 public static final String XPATH_SYSTEM_TEMPLATE =
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44 "/artifact-database/metadata/system/@template";
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45
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46 public static final String XPATH_USER_TEMPLATE =
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47 "/artifact-database/metadata/user/@template";
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48
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49 private static Recommendations INSTANCE;
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50
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51 protected Builder systemBuilder;
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52 protected Builder userBuilder;
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53
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54 public Recommendations() {
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55 }
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56
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57 public Recommendations(Builder systemBuilder, Builder userBuilder) {
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58 this.systemBuilder = systemBuilder;
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59 this.userBuilder = userBuilder;
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60 }
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61
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62 public Builder getUserBuilder() {
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63 return userBuilder;
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64 }
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65
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66 public Builder getSystemBuilder() {
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67 return systemBuilder;
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68 }
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69
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70 protected static void artifactToParameters(
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71 FLYSArtifact artifact,
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72 Map<String, Object> parameters
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73 ) {
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74 parameters.put("current-state-id", artifact.getCurrentStateId());
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75
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76 for (StateData sd: artifact.getAllData()) {
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77 Object value = sd.getValue();
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78 if (value == null) {
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79 continue;
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80 }
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81 String key = sd.getName().replace('.', '-');
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82 parameters.put(key, value);
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83 }
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84 }
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85
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86 public void recommend(
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87 FLYSArtifact artifact,
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88 String userId,
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89 String [] outs,
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90 Map<String, Object> extraParameters,
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91 Node result
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92 ) {
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93 Map<String, Object> parameters = new HashMap<String, Object>();
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94
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95 if (extraParameters != null) {
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96 parameters.putAll(extraParameters);
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97 }
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98
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99 if (userId != null) {
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100 parameters.put("user-id", userId);
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101 }
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102
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103 if (artifact != null) {
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104 artifactToParameters(artifact, parameters);
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105 }
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106
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107 parameters.put("artifact-outs", outs);
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108
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109 parameters.put("parameters", parameters);
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110
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111 recommend(parameters, userId, result);
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112 }
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113
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114 public void recommend(
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115 Map<String, Object> parameters,
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116 String userId,
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117 Node result
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118 ) {
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119 recommend(parameters, userId, result, SessionHolder.HOLDER.get());
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120 }
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121
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122 public void recommend(
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123 final Map<String, Object> parameters,
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124 final String userId,
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125 final Node result,
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126 Session session
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127 ) {
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128 if (systemBuilder == null || userBuilder == null) {
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129 log.error("builder not configured properly.");
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130 return;
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131 }
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132
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diff changeset
133 session.doWork(new Work() {
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diff changeset
134 @Override
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135 public void execute(Connection systemConnection)
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136 throws SQLException
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137 {
9a1a3080ad98 Bring user specific meta data service to life.
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138 List<Builder.NamedConnection> connections =
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diff changeset
139 new ArrayList<Builder.NamedConnection>(2);
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140
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141 if (userId != null) { // system and user templates
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142 connections.add(new Builder.NamedConnection(
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143 Builder.CONNECTION_USER, systemConnection));
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144
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145 // get connection to datacage db
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146 DataSource dataSource = DBConfig
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147 .getInstance()
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148 .getDBConnection()
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149 .getDataSource();
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150
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151 Connection userConnection = dataSource.getConnection();
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152 try {
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153 connections.add(new Builder.NamedConnection(
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154 Builder.CONNECTION_SYSTEM, userConnection, false));
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155
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156 userBuilder.build(connections, result, parameters);
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157 }
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158 finally {
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159 userConnection.close();
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160 }
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161 }
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162 else { // system template only
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163 connections.add(new Builder.NamedConnection(
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164 Builder.CONNECTION_SYSTEM, systemConnection));
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165
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166 systemBuilder.build(connections, result, parameters);
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167 }
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168 }
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169 });
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170 }
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171
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172 public static synchronized Recommendations getInstance() {
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173 if (INSTANCE == null) {
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174 INSTANCE = createRecommendations();
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175 }
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176 return INSTANCE;
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177 }
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178
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179 protected static Document loadTemplate(File file) throws IOException {
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180 InputStream in = null;
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diff changeset
181
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182 try {
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183 in = new FileInputStream(file);
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184
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185 Document template = XMLUtils.parseDocument(in);
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186
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187 if (template == null) {
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188 throw new IOException("cannot load template");
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189 }
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190 return template;
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191 }
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192 finally {
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193 if (in != null) {
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diff changeset
194 try {
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195 in.close();
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196 }
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197 catch (IOException ioe) {
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198 log.error(ioe);
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diff changeset
199 }
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parents:
diff changeset
200 }
9a1a3080ad98 Bring user specific meta data service to life.
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parents:
diff changeset
201 }
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parents:
diff changeset
202 }
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diff changeset
203
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204 public static Recommendations createRecommendations(
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diff changeset
205 File systemFile,
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
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diff changeset
206 File userFile
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207 ) {
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diff changeset
208 log.debug("Recommendations.createBuilder");
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diff changeset
209
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diff changeset
210 if (!systemFile.isFile() || !systemFile.canRead()) {
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diff changeset
211 log.error("Cannot open template file '" + systemFile + "'");
9a1a3080ad98 Bring user specific meta data service to life.
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diff changeset
212 return null;
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diff changeset
213 }
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parents:
diff changeset
214
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diff changeset
215 if (!userFile.isFile() || !userFile.canRead()) {
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diff changeset
216 log.error("Cannot open template file '" + userFile + "'");
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diff changeset
217 return null;
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parents:
diff changeset
218 }
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
219
9a1a3080ad98 Bring user specific meta data service to life.
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diff changeset
220 try {
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diff changeset
221 Document systemTemplate = loadTemplate(systemFile);
9a1a3080ad98 Bring user specific meta data service to life.
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diff changeset
222 Document userTemplate = loadTemplate(userFile);
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diff changeset
223 return new Recommendations(
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
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diff changeset
224 new Builder(systemTemplate),
9a1a3080ad98 Bring user specific meta data service to life.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
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diff changeset
225 new Builder(userTemplate));
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
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diff changeset
226 }
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diff changeset
227 catch (IOException ioe) {
9a1a3080ad98 Bring user specific meta data service to life.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
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diff changeset
228 log.error(ioe);
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
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diff changeset
229 return null;
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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.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
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diff changeset
232
9a1a3080ad98 Bring user specific meta data service to life.
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diff changeset
233 protected static Recommendations createRecommendations() {
9a1a3080ad98 Bring user specific meta data service to life.
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parents:
diff changeset
234 log.debug("Recommendations.createRecommendations");
9a1a3080ad98 Bring user specific meta data service to life.
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parents:
diff changeset
235
9a1a3080ad98 Bring user specific meta data service to life.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
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diff changeset
236 String systemPath = Config.getStringXPath(XPATH_SYSTEM_TEMPLATE);
9a1a3080ad98 Bring user specific meta data service to life.
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diff changeset
237 String userPath = Config.getStringXPath(XPATH_USER_TEMPLATE);
9a1a3080ad98 Bring user specific meta data service to life.
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parents:
diff changeset
238
9a1a3080ad98 Bring user specific meta data service to life.
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parents:
diff changeset
239 if (systemPath == null || userPath == null) {
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parents:
diff changeset
240 log.error("no path to template file given");
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parents:
diff changeset
241 return null;
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
242 }
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
243
9a1a3080ad98 Bring user specific meta data service to life.
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diff changeset
244 systemPath = Config.replaceConfigDir(systemPath);
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parents:
diff changeset
245 userPath = Config.replaceConfigDir(userPath);
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parents:
diff changeset
246
9a1a3080ad98 Bring user specific meta data service to life.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
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diff changeset
247 return createRecommendations(
9a1a3080ad98 Bring user specific meta data service to life.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
248 new File(systemPath),
9a1a3080ad98 Bring user specific meta data service to life.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
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diff changeset
249 new File(userPath));
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
250 }
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
251 }
9a1a3080ad98 Bring user specific meta data service to life.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
252 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf-8 :
http://dive4elements.wald.intevation.org