1 | #region License Information
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2 | /* HeuristicLab
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3 | * Copyright (C) 2002-2015 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 Google.Protobuf;
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26 |
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27 | namespace HeuristicLab.Persistence {
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28 | public sealed class Mapper {
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29 | internal class MappingEqualityComparer : IEqualityComparer<object> {
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30 | bool IEqualityComparer<object>.Equals(object x, object y) {
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31 | if (x == null && y == null) return true;
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32 | if (x == null ^ y == null) return false;
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33 | if (x.GetType() != y.GetType()) return false;
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34 |
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35 | var type = x.GetType();
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36 | if (type.IsValueType || type == typeof(string)) return x.Equals(y);
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37 | return object.ReferenceEquals(x, y);
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38 | }
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39 |
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40 | int IEqualityComparer<object>.GetHashCode(object obj) {
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41 | return obj == null ? 0 : obj.GetHashCode();
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42 | }
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43 | }
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44 |
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45 | private static StaticCache staticCache;
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46 | private static object locker = new object();
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47 | public static StaticCache StaticCache {
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48 | get {
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49 | lock (locker) {
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50 | if (staticCache == null) staticCache = new StaticCache();
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51 | return staticCache;
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52 | }
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53 | }
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54 | }
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55 |
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56 | private Index<ITransformer> transformers;
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57 | private Index<Type> types;
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58 |
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59 | private Dictionary<uint, Box> boxId2Box;
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60 | private Dictionary<object, uint> object2BoxId;
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61 | private Dictionary<uint, object> boxId2Object;
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62 | private Index<TypeBox> typeBoxes;
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63 |
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64 | private Index<string> strings;
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65 |
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66 | private Index<BoolArrayBox> boolArrayBoxes;
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67 | private Index<IntArrayBox> intArrayBoxes;
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68 | private Index<UnsignedIntArrayBox> unsignedIntArrayBoxes;
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69 | private Index<LongArrayBox> longArrayBoxes;
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70 | private Index<UnsignedLongArrayBox> unsignedLongArrayBoxes;
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71 | private Index<FloatArrayBox> floatArrayBoxes;
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72 | private Index<DoubleArrayBox> doubleArrayBoxes;
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73 |
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74 | private Index<DictionaryBox> dictionaryBoxes;
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75 | private Index<StorableClassBox> storableClassBoxes;
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76 |
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77 | public uint BoxCount { get; private set; }
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78 |
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79 |
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80 | public Mapper() {
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81 | transformers = new Index<ITransformer>();
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82 | types = new Index<Type>();
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83 |
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84 | boxId2Box = new Dictionary<uint, Box>();
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85 | object2BoxId = new Dictionary<object, uint>(new MappingEqualityComparer());
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86 | boxId2Object = new Dictionary<uint, object>();
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87 | typeBoxes = new Index<TypeBox>();
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88 |
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89 | strings = new Index<string>();
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90 |
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91 | boolArrayBoxes = new Index<BoolArrayBox>();
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92 | intArrayBoxes = new Index<IntArrayBox>();
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93 | unsignedIntArrayBoxes = new Index<UnsignedIntArrayBox>();
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94 | longArrayBoxes = new Index<LongArrayBox>();
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95 | unsignedLongArrayBoxes = new Index<UnsignedLongArrayBox>();
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96 | floatArrayBoxes = new Index<FloatArrayBox>();
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97 | doubleArrayBoxes = new Index<DoubleArrayBox>();
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98 |
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99 | dictionaryBoxes = new Index<DictionaryBox>();
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100 | storableClassBoxes = new Index<StorableClassBox>();
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101 |
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102 | BoxCount = 0;
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103 | }
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104 |
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105 | #region Transformers
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106 | public uint GetTransformerId(ITransformer transformer) {
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107 | return transformers.GetIndex(transformer);
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108 | }
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109 |
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110 | public ITransformer GetTransformer(uint transformerId) {
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111 | return transformers.GetValue(transformerId);
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112 | }
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113 | #endregion
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114 |
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115 | #region Types
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116 | public uint GetTypeId(Type type) {
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117 | return types.GetIndex(type);
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118 | }
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119 |
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120 | public Type GetType(uint typeId) {
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121 | return types.GetValue(typeId);
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122 | }
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123 | #endregion
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124 |
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125 | #region Boxes
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126 | public uint GetBoxId(object o) {
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127 | uint boxId;
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128 |
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129 | if (o == null)
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130 | boxId = 0;
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131 | else {
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132 | if (object2BoxId.TryGetValue(o, out boxId)) return boxId;
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133 | var type = o.GetType();
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134 | var typeInfo = StaticCache.GetTypeInfo(type);
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135 | if (typeInfo.Transformer == null) throw new ArgumentException("Cannot serialize object of type " + o.GetType());
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136 | boxId = ++BoxCount;
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137 | typeInfo.Used++;
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138 | object2BoxId.Add(o, boxId);
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139 | boxId2Box.Add(boxId, typeInfo.Transformer.ToBox(o, this));
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140 | }
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141 | return boxId;
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142 | }
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143 |
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144 | public Box GetBox(uint boxId) {
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145 | return boxId2Box[boxId];
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146 | }
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147 |
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148 | public object GetObject(uint boxId) {
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149 | object o;
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150 | if (boxId2Object.TryGetValue(boxId, out o)) return o;
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151 |
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152 | Box box;
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153 | boxId2Box.TryGetValue(boxId, out box);
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154 |
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155 | if (box == null)
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156 | o = null;
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157 | else {
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158 | var transformer = transformers.GetValue(box.TransformerId);
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159 | o = transformer.ToObject(box, this);
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160 | boxId2Object.Add(boxId, o);
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161 | transformer.FillFromBox(o, box, this);
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162 | }
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163 |
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164 | return o;
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165 | }
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166 |
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167 | #region Referenced Boxes
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168 | #region TypeBoxes
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169 | public uint GetTypeBoxId(TypeBox typeBox) { return typeBoxes.GetIndex(typeBox); }
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170 | public TypeBox GetTypeBox(uint typeBoxId) { return typeBoxes.GetValue(typeBoxId); }
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171 | #endregion
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172 |
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173 | #region BoolArrayBox
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174 | public uint GetBoolArrayBoxId(BoolArrayBox boolArrayBox) { return boolArrayBoxes.GetIndex(boolArrayBox); }
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175 | public BoolArrayBox GetBoolArrayBox(uint boolArrayBoxId) { return boolArrayBoxes.GetValue(boolArrayBoxId); }
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176 | #endregion
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177 |
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178 | #region IntArrayBox
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179 | public uint GetIntArrayBoxId(IntArrayBox intArrayBox) { return intArrayBoxes.GetIndex(intArrayBox); }
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180 | public IntArrayBox GetIntArrayBox(uint intArrayBoxId) { return intArrayBoxes.GetValue(intArrayBoxId); }
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181 | #endregion
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182 |
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183 | #region UnsignedIntArrayBox
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184 | public uint GetUnsignedIntArrayBoxId(UnsignedIntArrayBox unsignedIntArrayBox) { return unsignedIntArrayBoxes.GetIndex(unsignedIntArrayBox); }
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185 | public UnsignedIntArrayBox GetUnsignedIntArrayBox(uint unsignedIntArrayBoxId) { return unsignedIntArrayBoxes.GetValue(unsignedIntArrayBoxId); }
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186 | #endregion
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187 |
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188 | #region LongArrayBox
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189 | public uint GetLongArrayBoxId(LongArrayBox longArrayBox) { return longArrayBoxes.GetIndex(longArrayBox); }
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190 | public LongArrayBox GetLongArrayBox(uint longArrayBoxId) { return longArrayBoxes.GetValue(longArrayBoxId); }
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191 | #endregion
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192 |
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193 | #region UnsignedLongArrayBox
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194 | public uint GetUnsignedLongArrayBoxId(UnsignedLongArrayBox unsignedLongArrayBox) { return unsignedLongArrayBoxes.GetIndex(unsignedLongArrayBox); }
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195 | public UnsignedLongArrayBox GetUnsignedLongArrayBox(uint unsignedLongArrayBoxId) { return unsignedLongArrayBoxes.GetValue(unsignedLongArrayBoxId); }
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196 | #endregion
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197 |
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198 | #region FloatArrayBox
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199 | public uint GetFloatArrayBoxId(FloatArrayBox floatArrayBox) { return floatArrayBoxes.GetIndex(floatArrayBox); }
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200 | public FloatArrayBox GetFloatArrayBox(uint floatArrayBoxId) { return floatArrayBoxes.GetValue(floatArrayBoxId); }
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201 | #endregion
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202 |
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203 | #region DoubleArrayBox
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204 | public uint GetDoubleArrayBoxId(DoubleArrayBox doubleArrayBox) { return doubleArrayBoxes.GetIndex(doubleArrayBox); }
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205 | public DoubleArrayBox GetDoubleArrayBox(uint doubleArrayBoxId) { return doubleArrayBoxes.GetValue(doubleArrayBoxId); }
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206 | #endregion
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207 |
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208 | #region DictionaryBox
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209 | public uint GetDictionaryBoxId(DictionaryBox dictionaryBox) { return dictionaryBoxes.GetIndex(dictionaryBox); }
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210 | public DictionaryBox GetDictionaryBox(uint dictionaryBoxId) { return dictionaryBoxes.GetValue(dictionaryBoxId); }
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211 | #endregion
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212 |
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213 | #region StorableClassBox
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214 | public uint GetStorableClassBoxId(StorableClassBox storableClassBox) { return storableClassBoxes.GetIndex(storableClassBox); }
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215 | public StorableClassBox GetStorableClassBox(uint storableClassBoxId) { return storableClassBoxes.GetValue(storableClassBoxId); }
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216 | #endregion
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217 | #endregion
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218 | #endregion
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219 |
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220 | #region Strings
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221 | public uint GetStringId(string str) {
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222 | return strings.GetIndex(str);
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223 | }
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224 | public string GetString(uint stringId) {
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225 | return strings.GetValue(stringId);
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226 | }
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227 | #endregion
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228 |
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229 | public object CreateInstance(Type type) {
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230 | try {
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231 | return StaticCache.GetTypeInfo(type).GetConstructor()();
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232 | } catch (Exception e) {
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233 | throw new PersistenceException("Deserialization failed.", e);
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234 | }
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235 | }
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236 |
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237 | public static Bundle ToBundle(object o) {
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238 | var mapper = new Mapper();
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239 | var bundle = new Bundle();
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240 |
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241 | bundle.RootBoxId = mapper.GetBoxId(o);
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242 | bundle.TransformerGuids.AddRange(mapper.transformers.GetValues().Select(x => x.Guid).Select(x => ByteString.CopyFrom(x.ToByteArray())));
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243 | bundle.TypeGuids.AddRange(mapper.types.GetValues().Select(x => ByteString.CopyFrom(StaticCache.GetGuid(x).ToByteArray())));
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244 | bundle.Boxes.AddRange(mapper.boxId2Box.OrderBy(x => x.Key).Select(x => x.Value));
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245 | bundle.TypeBoxes.AddRange(mapper.typeBoxes.GetValues());
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246 |
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247 | bundle.Strings.AddRange(mapper.strings.GetValues());
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248 |
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249 | bundle.BoolArrayBoxes.AddRange(mapper.boolArrayBoxes.GetValues());
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250 | bundle.IntArrayBoxes.AddRange(mapper.intArrayBoxes.GetValues());
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251 | bundle.UnsignedIntArrayBoxes.AddRange(mapper.unsignedIntArrayBoxes.GetValues());
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252 | bundle.LongArrayBoxes.AddRange(mapper.longArrayBoxes.GetValues());
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253 | bundle.UnsignedLongArrayBoxes.AddRange(mapper.unsignedLongArrayBoxes.GetValues());
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254 | bundle.FloatArrayBoxes.AddRange(mapper.floatArrayBoxes.GetValues());
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255 | bundle.DoubleArrayBoxes.AddRange(mapper.doubleArrayBoxes.GetValues());
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256 |
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257 | bundle.DictionaryBoxes.AddRange(mapper.dictionaryBoxes.GetValues());
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258 | bundle.StorableClassBoxes.AddRange(mapper.storableClassBoxes.GetValues());
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259 |
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260 | return bundle;
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261 | }
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262 | public static object ToObject(Bundle bundle) {
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263 | var mapper = new Mapper();
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264 |
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265 | mapper.transformers = new Index<ITransformer>(bundle.TransformerGuids.Select(x => new Guid(x.ToByteArray())).Select(StaticCache.GetTransformer));
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266 | mapper.types = new Index<Type>(bundle.TypeGuids.Select(x => StaticCache.GetType(new Guid(x.ToByteArray()))));
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267 |
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268 | mapper.boxId2Box = bundle.Boxes.Select((b, i) => new { Box = b, Index = i }).ToDictionary(k => (uint)k.Index + 1, v => v.Box);
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269 | mapper.typeBoxes = new Index<TypeBox>(bundle.TypeBoxes);
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270 |
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271 | mapper.strings = new Index<string>(bundle.Strings);
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272 |
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273 | mapper.boolArrayBoxes = new Index<BoolArrayBox>(bundle.BoolArrayBoxes);
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274 | mapper.intArrayBoxes = new Index<IntArrayBox>(bundle.IntArrayBoxes);
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275 | mapper.unsignedIntArrayBoxes = new Index<UnsignedIntArrayBox>(bundle.UnsignedIntArrayBoxes);
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276 | mapper.longArrayBoxes = new Index<LongArrayBox>(bundle.LongArrayBoxes);
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277 | mapper.unsignedLongArrayBoxes = new Index<UnsignedLongArrayBox>(bundle.UnsignedLongArrayBoxes);
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278 | mapper.floatArrayBoxes = new Index<FloatArrayBox>(bundle.FloatArrayBoxes);
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279 | mapper.doubleArrayBoxes = new Index<DoubleArrayBox>(bundle.DoubleArrayBoxes);
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280 |
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281 | mapper.dictionaryBoxes = new Index<DictionaryBox>(bundle.DictionaryBoxes);
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282 | mapper.storableClassBoxes = new Index<StorableClassBox>(bundle.StorableClassBoxes);
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283 |
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284 | return mapper.GetObject(bundle.RootBoxId);
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285 | }
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286 | }
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287 | }
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