1 | #region License Information
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2 | /* HeuristicLab
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3 | * Copyright (C) 2002-2012 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 | namespace HeuristicLab.Persistence {
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28 | [Transformer("78556C88-0FEE-4602-95C7-A469B2DDB468", 100)]
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29 | [StorableType("3a578289-43ca-40f8-9f1e-2bdd255cb8fb")]
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30 | internal sealed class StorableClassBoxTransformer : BoxTransformer<object> {
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31 | public override bool CanTransformType(Type type) {
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32 | return StorableTypeAttribute.IsStorableType(type) && !type.IsValueType && !type.IsEnum || // don't transform structs or enums
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33 | type.BaseType != null && CanTransformType(type.BaseType);
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34 | }
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35 |
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36 | protected override void Populate(Box.Builder box, object value, Mapper mapper) {
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37 | var b = StorableClassBox.CreateBuilder();
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38 | var type = value.GetType();
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39 | var typeInfo = Mapper.StaticCache.GetTypeInfo(type);
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40 |
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41 | var emptyArgs = new object[0];
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42 | foreach (var hook in typeInfo.BeforeSerializationHooks) {
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43 | hook.Invoke(value, emptyArgs);
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44 | }
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45 |
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46 | var components = new Dictionary<uint, uint>();
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47 | foreach (var componentInfo in typeInfo.Fields) {
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48 | var field = (FieldInfo)componentInfo.MemberInfo;
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49 | var component = mapper.GetBoxId(field.GetValue(value));
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50 | components.Add(mapper.GetStringId(componentInfo.Name), component);
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51 | }
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52 |
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53 | foreach (var componentInfo in typeInfo.Properties.Where(x => x.Readable)) {
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54 | var property = (PropertyInfo)componentInfo.MemberInfo;
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55 | var component = mapper.GetBoxId(property.GetValue(value, null));
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56 | components.Add(mapper.GetStringId(componentInfo.Name), component);
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57 | }
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58 |
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59 | b.AddRangeKeyIds(components.Keys);
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60 | b.AddRangeValueIds(components.Values);
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61 |
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62 | box.SetExtension(StorableClassBox.StorableClass, b.Build());
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63 | }
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64 |
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65 | protected override object Extract(Box box, Type type, Mapper mapper) {
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66 | return mapper.CreateInstance(type);
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67 | }
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68 | public override void FillFromBox(object obj, Box box, Mapper mapper) {
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69 | var data = box.GetExtension(StorableClassBox.StorableClass);
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70 | var type = obj.GetType();
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71 | var typeInfo = Mapper.StaticCache.GetTypeInfo(type);
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72 | var typeBox = mapper.GetBox(box.TypeId).GetExtension(TypeBox.Type);
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73 | var version = typeBox.HasVersion ? typeBox.Version : 1;
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74 | var typeGuid = typeInfo.StorableTypeAttribute.Guid;
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75 |
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76 | var components = new Dictionary<uint, uint>();
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77 | for (int i = 0; i < data.KeyIdsList.Count; i++) {
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78 | components.Add(data.KeyIdsList[i], data.ValueIdsList[i]);
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79 | }
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80 |
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81 | var conversionMethods =
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82 | type.Assembly.GetTypes().SelectMany(t =>
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83 | t.GetMethods(BindingFlags.NonPublic | BindingFlags.Static)
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84 | .Where(StorableConversionAttribute.IsStorableConversionMethod)
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85 | .Where(mi => StorableConversionAttribute.GetGuid(mi) == typeGuid &&
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86 | StorableConversionAttribute.GetVersion(mi) >= version))
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87 | .OrderBy(StorableConversionAttribute.GetVersion)
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88 | .ToArray();
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89 |
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90 | // put all objects into dictionary for conversion
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91 | var dict = new Dictionary<string, object>();
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92 | foreach (var component in components) {
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93 | dict.Add(mapper.GetString(component.Key), mapper.GetObject(component.Value));
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94 | }
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95 |
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96 | Dictionary<string, object> lastDict = new Dictionary<string, object>();
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97 | foreach (var convMeth in conversionMethods) {
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98 | if (StorableConversionAttribute.GetVersion(convMeth) != version)
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99 | throw new PersistenceException(string.Format("No conversion method defined for type {0} version {1}", typeGuid, version));
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100 | lastDict = (Dictionary<string, object>)convMeth.Invoke(null, new object[] { dict });
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101 | foreach (var kvp in lastDict) {
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102 | dict[kvp.Key] = kvp.Value;
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103 | }
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104 | version++;
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105 | }
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106 | if (version != typeInfo.StorableTypeAttribute.Version)
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107 | throw new PersistenceException(string.Format("Missing one or more conversion methods for type {0} version {1}",
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108 | typeGuid, typeInfo.StorableTypeAttribute.Version));
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109 |
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110 | // set default values for all fields and properties
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111 | foreach (var componentInfo in typeInfo.Fields) {
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112 | var field = (FieldInfo)componentInfo.MemberInfo;
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113 | if (componentInfo.StorableAttribute != null && componentInfo.StorableAttribute.DefaultValue != null)
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114 | field.SetValue(obj, componentInfo.StorableAttribute.DefaultValue);
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115 | }
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116 | foreach (var componentInfo in typeInfo.Properties.Where(x => x.Writeable)) {
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117 | var property = (PropertyInfo)componentInfo.MemberInfo;
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118 | if (componentInfo.StorableAttribute != null && componentInfo.StorableAttribute.DefaultValue != null)
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119 | property.SetValue(obj, componentInfo.StorableAttribute.DefaultValue, null);
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120 | }
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121 |
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122 | // set all members as generated by conversion method chain
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123 | foreach (var kvp in dict) {
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124 | var key = kvp.Key;
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125 | var val = kvp.Value;
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126 | var fieldInfo = typeInfo.Fields.FirstOrDefault(fi => fi.Name == key);
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127 | if (fieldInfo != null) {
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128 | var field = (FieldInfo)fieldInfo.MemberInfo;
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129 | field.SetValue(obj, val);
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130 | lastDict.Remove(fieldInfo.Name); // only for consistency check
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131 | continue;
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132 | }
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133 | var propInfo = typeInfo.Properties.Where(x => x.Writeable).FirstOrDefault(pi => pi.Name == key);
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134 | if (propInfo != null) {
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135 | var prop = (PropertyInfo)propInfo.MemberInfo;
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136 | prop.SetValue(obj, val, null);
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137 | lastDict.Remove(propInfo.Name); // only for consistency check
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138 | continue;
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139 | }
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140 | }
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141 |
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142 | if (lastDict.Any())
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143 | throw new PersistenceException(string.Format("Invalid conversion method. The following members are undefined in type {0} version {1}: {2}",
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144 | typeGuid, typeInfo.StorableTypeAttribute.Version,
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145 | string.Join(", ", lastDict.Keys)));
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146 |
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147 | var emptyArgs = new object[0];
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148 | foreach (var hook in typeInfo.AfterDeserializationHooks) {
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149 | hook.Invoke(obj, emptyArgs);
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150 | }
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151 | }
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152 | }
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153 | }
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