1 | #region License Information
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2 | /* HeuristicLab
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3 | * Copyright (C) 2002-2008 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
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4 | *
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5 | * This file is part of HeuristicLab.
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6 | *
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7 | * HeuristicLab is free software: you can redistribute it and/or modify
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8 | * it under the terms of the GNU General Public License as published by
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9 | * the Free Software Foundation, either version 3 of the License, or
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10 | * (at your option) any later version.
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11 | *
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12 | * HeuristicLab is distributed in the hope that it will be useful,
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13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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15 | * GNU General Public License for more details.
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16 | *
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17 | * You should have received a copy of the GNU General Public License
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18 | * along with HeuristicLab. If not, see <http://www.gnu.org/licenses/>.
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19 | */
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20 | #endregion
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21 |
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22 | using System;
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23 | using System.Collections.Generic;
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24 | using System.Linq;
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25 | using System.Reflection;
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26 |
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27 | using HeuristicLab.Core;
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28 | using HeuristicLab.DataAnalysis;
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29 | using HeuristicLab.Data;
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30 | using System.Data.Linq;
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31 |
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32 | namespace HeuristicLab.Modeling.Database.SQLServerCompact {
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33 | public class DatabaseService : IModelingDatabase {
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34 |
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35 | private readonly string connection;
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36 | public DatabaseService(string connection) {
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37 | this.connection = connection;
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38 | Connect();
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39 | if (!ctx.DatabaseExists())
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40 | ctx.CreateDatabase();
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41 | }
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42 |
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43 | public void EmptyDatabase() {
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44 | ctx.Connection.Dispose();
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45 | ctx.DeleteDatabase();
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46 | Connect();
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47 | ctx.CreateDatabase();
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48 | }
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49 |
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50 | private ModelingDataContext ctx;
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51 | public void Connect() {
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52 | if (ctx != null)
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53 | Disconnect();
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54 |
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55 | ctx = new ModelingDataContext(connection);
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56 | DataLoadOptions dlo = new DataLoadOptions();
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57 | dlo.LoadWith<ModelResult>(mr => mr.Result);
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58 | dlo.LoadWith<ModelMetaData>(mmd => mmd.MetaData);
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59 | dlo.LoadWith<InputVariableResult>(ir => ir.Variable);
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60 | dlo.LoadWith<InputVariableResult>(ir => ir.Result);
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61 | dlo.LoadWith<Model>(m => m.TargetVariable);
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62 | dlo.LoadWith<Model>(m => m.Algorithm);
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63 | ctx.LoadOptions = dlo;
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64 | }
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65 |
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66 | public void Disconnect() {
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67 | if (ctx == null)
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68 | return;
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69 | ctx.Connection.Dispose();
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70 | ctx.Dispose();
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71 | ctx = null;
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72 | }
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73 |
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74 | public IModel Persist(HeuristicLab.Modeling.IAlgorithm algorithm) {
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75 | GetOrCreateProblem(algorithm.Dataset);
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76 | return Persist(algorithm.Model, algorithm.Name, algorithm.Description);
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77 | }
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78 |
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79 | public IModel Persist(HeuristicLab.Modeling.IAnalyzerModel model, string algorithmName, string algorithmDescription) {
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80 | Dictionary<string, Variable> variables = GetAllVariables();
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81 | Algorithm algo = GetOrCreateAlgorithm(algorithmName, algorithmDescription);
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82 | Variable target = variables[model.TargetVariable];
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83 | Model m;
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84 |
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85 | using (ModelingDataContext ctx = new ModelingDataContext(connection)) {
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86 | m = new Model(target, algo);
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87 | m.TrainingSamplesStart = model.TrainingSamplesStart;
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88 | m.TrainingSamplesEnd = model.TrainingSamplesEnd;
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89 | m.ValidationSamplesStart = model.ValidationSamplesStart;
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90 | m.ValidationSamplesEnd = model.ValidationSamplesEnd;
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91 | m.TestSamplesStart = model.TestSamplesStart;
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92 | m.TestSamplesEnd = model.TestSamplesEnd;
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93 |
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94 | ctx.Models.InsertOnSubmit(m);
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95 |
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96 | ctx.SubmitChanges();
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97 | }
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98 |
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99 | using (ModelingDataContext ctx = new ModelingDataContext(connection)) {
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100 | ctx.ModelData.InsertOnSubmit(new ModelData(m, PersistenceManager.SaveToGZip(model.Predictor)));
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101 | ctx.SubmitChanges();
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102 | }
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103 |
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104 | using (ModelingDataContext ctx = new ModelingDataContext(connection)) {
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105 | foreach (string inputVariable in model.InputVariables) {
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106 | ctx.InputVariables.InsertOnSubmit(new InputVariable(m, variables[inputVariable]));
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107 | }
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108 | ctx.SubmitChanges();
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109 | }
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110 |
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111 | using (ModelingDataContext ctx = new ModelingDataContext(connection)) {
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112 | foreach (KeyValuePair<ModelingResult, double> pair in model.Results) {
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113 | Result result = GetOrCreateResult(pair.Key.ToString());
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114 | ctx.ModelResults.InsertOnSubmit(new ModelResult(m, result, pair.Value));
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115 | }
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116 | ctx.SubmitChanges();
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117 | }
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118 |
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119 | // code to store meta-information for models (gkronber (8.9.09))
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120 | using (ModelingDataContext ctx = new ModelingDataContext(connection)) {
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121 | foreach (KeyValuePair<string, double> pair in model.MetaData) {
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122 | MetaData metaData = GetOrCreateMetaData(pair.Key);
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123 | ctx.ModelMetaData.InsertOnSubmit(new ModelMetaData(m, metaData, pair.Value));
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124 | }
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125 | ctx.SubmitChanges();
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126 | }
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127 |
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128 | using (ModelingDataContext ctx = new ModelingDataContext(connection)) {
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129 | foreach (InputVariable variable in ctx.InputVariables.Where(iv => iv.Model == m)) {
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130 | foreach (KeyValuePair<ModelingResult, double> variableResult in model.GetVariableResults(variable.Variable.Name)) {
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131 | Result result = GetOrCreateResult(variableResult.Key.ToString());
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132 | ctx.InputVariableResults.InsertOnSubmit(new InputVariableResult(variable, result, variableResult.Value));
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133 | }
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134 | }
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135 | ctx.SubmitChanges();
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136 | }
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137 |
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138 | //if connected to database return inserted model
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139 | if (this.ctx != null)
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140 | return this.ctx.Models.Where(x => x.Id == m.Id).Single();
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141 | return null;
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142 | }
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143 |
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144 | #region Problem
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145 |
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146 | public Dataset GetDataset() {
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147 | if (ctx.Problems.Count() != 1)
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148 | throw new InvalidOperationException("Could not get dataset. No or more than one problems are persisted in the database.");
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149 |
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150 | Problem problem = ctx.Problems.Single();
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151 | return problem.Dataset;
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152 |
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153 | }
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154 |
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155 | public IProblem GetOrCreateProblem(Dataset dataset) {
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156 | IProblem problem;
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157 | if (ctx.Problems.Count() == 0)
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158 | problem = PersistProblem(dataset);
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159 | else
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160 | problem = ctx.Problems.Single();
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161 | if (problem.Dataset.ToString() != dataset.ToString())
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162 | throw new InvalidOperationException("Could not persist dataset. The database already contains a different dataset.");
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163 | return problem;
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164 | }
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165 |
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166 | public IProblem PersistProblem(Dataset dataset) {
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167 | Problem problem;
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168 | using (ModelingDataContext ctx = new ModelingDataContext(connection)) {
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169 | if (ctx.Problems.Count() != 0)
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170 | throw new InvalidOperationException("Could not persist dataset. A dataset is already saved in the database.");
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171 | problem = new Problem(dataset);
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172 | ctx.Problems.InsertOnSubmit(problem);
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173 | foreach (string variable in dataset.VariableNames) {
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174 | ctx.Variables.InsertOnSubmit(new Variable(variable));
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175 | }
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176 | ctx.SubmitChanges();
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177 | }
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178 | return problem;
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179 | }
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180 |
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181 | #endregion
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182 |
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183 | #region Algorithm
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184 | public Algorithm GetOrCreateAlgorithm(string name, string description) {
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185 | Algorithm algorithm;
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186 | using (ModelingDataContext ctx = new ModelingDataContext(connection)) {
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187 | var algorithms = from algo in ctx.Algorithms
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188 | where algo.Name == name && algo.Description == description
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189 | select algo;
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190 | if (algorithms.Count() == 0) {
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191 | algorithm = new Algorithm(name, description);
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192 | ctx.Algorithms.InsertOnSubmit(algorithm);
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193 | ctx.SubmitChanges();
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194 | } else if (algorithms.Count() == 1)
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195 | algorithm = algorithms.Single();
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196 | else
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197 | throw new ArgumentException("Could not get Algorithm. More than one algorithm with the name " + name + " are saved in database.");
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198 | }
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199 | return algorithm;
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200 | }
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201 |
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202 | public IEnumerable<IAlgorithm> GetAllAlgorithms() {
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203 | return ctx.Algorithms.ToList().Cast<IAlgorithm>();
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204 | }
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205 | #endregion
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206 |
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207 | #region Variables
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208 | public Dictionary<string, Variable> GetAllVariables() {
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209 | Dictionary<string, Variable> dict = new Dictionary<string, Variable>();
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210 | dict = ctx.Variables.ToDictionary<Variable, string>(delegate(Variable v) { return v.Name; });
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211 | return dict;
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212 | }
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213 | #endregion
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214 |
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215 | #region Result
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216 | public Result GetOrCreateResult(string name) {
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217 | Result result;
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218 | using (ModelingDataContext ctx = new ModelingDataContext(connection)) {
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219 | var results = from r in ctx.Results
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220 | where r.Name == name
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221 | select r;
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222 | if (results.Count() == 0) {
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223 | result = new Result(name);
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224 | ctx.Results.InsertOnSubmit(result);
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225 | ctx.SubmitChanges();
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226 | } else if (results.Count() == 1)
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227 | result = results.Single();
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228 | else
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229 | throw new ArgumentException("Could not get result. More than one result with the name " + name + " are saved in database.");
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230 | }
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231 | return result;
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232 | }
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233 |
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234 | public IEnumerable<IResult> GetAllResults() {
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235 | return ctx.Results.ToList().Cast<IResult>();
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236 | }
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237 |
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238 | public IEnumerable<IResult> GetAllResultsForInputVariables() {
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239 | return (from ir in ctx.InputVariableResults select ir.Result).Distinct().ToList().Cast<IResult>();
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240 | }
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241 |
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242 | #endregion
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243 |
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244 | #region ModelResult
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245 | public IEnumerable<IModelResult> GetModelResults(IModel model) {
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246 | var results = from result in ctx.ModelResults
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247 | where result.Model == model
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248 | select result;
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249 | return results.ToList().Cast<IModelResult>();
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250 | }
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251 | #endregion
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252 |
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253 | #region InputVariableResults
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254 | public IEnumerable<IInputVariableResult> GetInputVariableResults(IModel model) {
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255 | var inputResults = from ir in ctx.InputVariableResults
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256 | where ir.Model == model
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257 | select ir;
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258 | return inputResults.ToList().Cast<IInputVariableResult>();
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259 | }
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260 |
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261 | #endregion
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262 |
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263 | #region ModelMetaData
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264 | public IEnumerable<IModelMetaData> GetModelMetaData(IModel model) {
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265 | var metadata = from md in ctx.ModelMetaData
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266 | where md.Model == model
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267 | select md;
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268 | return metadata.ToList().Cast<IModelMetaData>();
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269 | }
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270 | #endregion
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271 |
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272 | #region MetaData
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273 | public IEnumerable<IMetaData> GetAllMetaData() {
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274 | return ctx.MetaData.ToList().Cast<IMetaData>();
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275 | }
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276 |
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277 | public MetaData GetOrCreateMetaData(string name) {
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278 | MetaData metadata;
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279 | using (ModelingDataContext ctx = new ModelingDataContext(connection)) {
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280 | var md = from r in ctx.MetaData
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281 | where r.Name == name
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282 | select r;
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283 | if (md.Count() == 0) {
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284 | metadata = new MetaData(name);
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285 | ctx.MetaData.InsertOnSubmit(metadata);
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286 | ctx.SubmitChanges();
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287 | } else if (md.Count() == 1)
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288 | metadata = md.Single();
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289 | else
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290 | throw new ArgumentException("Could not get metadata. More than one metadata with the name " + name + " are saved in database.");
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291 | }
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292 | return metadata;
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293 | }
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294 |
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295 | #endregion
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296 |
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297 | #region Model
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298 | public IEnumerable<IModel> GetAllModels() {
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299 | return ctx.Models.ToList().Cast<IModel>();
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300 | }
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301 |
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302 | public void UpdateModel(IModel model) {
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303 | Model m = (Model)model;
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304 | Model orginal = ctx.Models.GetOriginalEntityState(m);
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305 | if (orginal == null)
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306 | ctx.Models.Attach(m);
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307 | ctx.Refresh(RefreshMode.KeepCurrentValues, m);
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308 | ctx.SubmitChanges();
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309 | }
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310 |
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311 | public byte[] GetModelData(IModel model) {
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312 | var data = (from md in ctx.ModelData
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313 | where md.Model == model
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314 | select md);
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315 | if (data.Count() == 0)
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316 | return null;
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317 | return data.Single().Data;
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318 | }
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319 |
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320 | public void UpdateModelData(IModel model, byte[] modelData) {
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321 | Model m = (Model)model;
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322 | ctx.ModelData.DeleteAllOnSubmit(ctx.ModelData.Where(x => x.Model == m));
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323 | ctx.ModelData.InsertOnSubmit(new ModelData(m, modelData));
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324 | ctx.SubmitChanges();
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325 | }
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326 |
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327 | public IPredictor GetModelPredictor(IModel model) {
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328 | byte[] data = GetModelData(model);
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329 | return (IPredictor)PersistenceManager.RestoreFromGZip(data);
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330 | }
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331 | #endregion
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332 | }
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333 | }
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