1 | using HeuristicLab.Common;
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2 | using HeuristicLab.Core;
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3 | using HeuristicLab.Data;
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4 | using HeuristicLab.Parameters;
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5 | using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
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6 | using System;
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7 | using System.Collections.Generic;
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8 | using System.Globalization;
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9 | using System.IO;
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10 | using System.Linq;
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11 | using System.Text;
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12 | using System.Text.RegularExpressions;
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13 | using YamlDotNet.RepresentationModel;
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14 |
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15 | namespace HeuristicLab.BioBoost.Data {
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16 |
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17 | [StorableClass]
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18 | [Item("DataItem", "Generic Item for holding various pieces of information")]
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19 | public abstract class DataItem : ParameterizedNamedItem {
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20 |
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21 | #region Construction & Cloning
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22 | [StorableConstructor]
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23 | protected DataItem(bool isDeserializing) : base(isDeserializing) {}
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24 | protected DataItem(DataItem orig, Cloner cloner) : base(orig, cloner) {}
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25 | protected DataItem() {}
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26 | #endregion
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27 |
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28 | public static IEnumerable<DataItem> ParseFile(string filename) {
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29 | using (var reader = File.OpenText(filename)) {
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30 | return ParseStream(reader);
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31 | }
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32 | }
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33 |
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34 | public abstract bool IsEquivalentTo(DataItem other);
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35 |
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36 | public static IEnumerable<DataItem> ParseStream(TextReader reader) {
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37 | var yaml = new YamlStream();
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38 | yaml.Load(reader);
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39 | if (yaml.Documents.Count == 0) return Enumerable.Empty<DataItem>();
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40 | var root = yaml.Documents[0].RootNode as YamlMappingNode;
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41 | if (root == null) return Enumerable.Empty<DataItem>();
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42 | return ParseItems(root);
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43 | }
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44 |
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45 | private static IEnumerable<DataItem> ParseItems(YamlMappingNode root) {
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46 | foreach (var child in root.Children) {
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47 | var type = child.Key as YamlScalarNode;
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48 | var value = child.Value as YamlSequenceNode;
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49 | if (type == null || value == null) {
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50 | // ignore or error?
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51 | } else {
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52 | switch (((string) type).ToLowerInvariant()) {
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53 | case "products":
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54 | foreach (var item in ParseSequence<Product>(value))
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55 | yield return item;
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56 | break;
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57 | case "logistics":
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58 | foreach (var item in ParseSequence<Logistic>(value))
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59 | yield return item;
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60 | break;
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61 | case "conversions":
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62 | foreach (var item in ParseSequence<Conversion>(value))
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63 | yield return item;
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64 | break;
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65 | case "cost-factors":
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66 | foreach (var item in ParseSequence<CostFactors>(value))
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67 | yield return item;
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68 | break;
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69 | }
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70 | }
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71 | }
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72 | }
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73 |
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74 | public static IEnumerable<T> ParseSequence<T>(YamlSequenceNode seq) where T : DataItem, new() {
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75 | foreach (var node in seq.Children) {
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76 | var mappingNode = node as YamlMappingNode;
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77 | if (mappingNode == null) continue;
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78 | var item = new T();
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79 | item.Parse(mappingNode);
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80 | yield return item;
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81 | }
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82 | }
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83 |
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84 | protected virtual void Parse(YamlMappingNode node) {
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85 | foreach (var child in node) {
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86 | var parameterNode = child.Key as YamlScalarNode;
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87 | if (parameterNode == null) continue;
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88 | var parameterName = ConvertNameYAML2NET(parameterNode.ToString());
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89 | IParameter param;
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90 | if (Parameters.TryGetValue(parameterName, out param) && param is IValueParameter) {
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91 | SetParameter(param, child.Value);
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92 | }
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93 | }
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94 | // TODO: check that all parameters have been filled
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95 | }
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96 |
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97 | private static void SetParameter(IParameter param, YamlNode node) {
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98 | if (node is YamlScalarNode) {
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99 | SetScalarParameter((IValueParameter) param, (YamlScalarNode) node);
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100 | } else if (node is YamlMappingNode) {
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101 | SetMappingParameter((IValueParameter) param, (YamlMappingNode) node);
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102 | } else {
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103 | // TODO: parse error/warning?
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104 | }
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105 | }
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106 |
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107 | private static void SetScalarParameter(IValueParameter param, YamlScalarNode node) {
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108 | if (param.DataType == typeof(StringValue)) {
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109 | param.Value = new StringValue(node.ToString());
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110 | } else if (param.DataType == typeof(DoubleValue)) {
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111 | param.Value = new DoubleValue(Double.Parse(node.ToString(), CultureInfo.InvariantCulture));
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112 | } else {
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113 | // TODO: parse error/warning?
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114 | }
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115 | }
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116 |
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117 | private static void SetMappingParameter(IValueParameter param, YamlMappingNode node) {
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118 | if (typeof (DataItem).IsAssignableFrom(param.DataType)) {
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119 | var constructorInfo = param.DataType.GetConstructor(Type.EmptyTypes);
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120 | if (constructorInfo != null) {
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121 | var item = (DataItem) constructorInfo.Invoke(new object[0]);
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122 | item.Parse(node);
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123 | param.Value = item;
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124 | return;
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125 | }
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126 | } else if (param.DataType.IsAssignableFrom(typeof(ValueParameterCollection))) {
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127 | var dict = new ValueParameterCollection();
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128 | foreach (var child in node.Children) {
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129 | var key = child.Key as YamlScalarNode;
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130 | if (key != null) {
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131 | var p = new ValueParameter<DoubleValue>(key.ToString());
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132 | SetParameter(p, child.Value);
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133 | dict.Add(p);
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134 | } else {
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135 | // TODO: parse error/warning?
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136 | }
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137 | }
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138 | param.Value = dict;
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139 | }
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140 | // TODO: parse error? warning?
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141 | }
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142 |
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143 | public static IItem CreateItem(YamlNode node) {
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144 | var n = node as YamlScalarNode;
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145 | if (n == null) return null;
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146 | double d;
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147 | string s = n.ToString();
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148 | if (Double.TryParse(s, NumberStyles.Float, CultureInfo.InvariantCulture, out d)) {
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149 | return new DoubleValue(d);
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150 | } else {
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151 | return new StringValue(s);
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152 | }
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153 | }
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154 |
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155 | #region Auxiliary Methods
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156 | public static string ConvertNameYAML2NET(string s) {
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157 | var sb = new StringBuilder();
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158 | foreach (var word in s.Split('-')) {
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159 | sb.Append(CultureInfo.InvariantCulture.TextInfo.ToTitleCase(word.ToLower()));
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160 | }
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161 | return sb.ToString();
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162 | }
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163 |
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164 | public static string ConvertNameNET2YAML(string s) {
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165 | return Regex.Replace(s, "([A-Z])", "-$1", RegexOptions.Compiled).Trim().ToLower();
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166 | }
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167 | #endregion
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168 |
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169 | }
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170 | }
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