[13326] | 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 HeuristicLab.Persistence.Data;
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| 26 | using HeuristicLab.PluginInfrastructure;
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| 27 |
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| 28 | namespace HeuristicLab.Persistence {
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| 29 | public sealed class PersistenceMapper {
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| 30 | private ShortIndex<ITransformer> transformers;
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| 31 | private Dictionary<Type, TypeInfo> typeInfos;
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| 32 | private ShortIndex<Type> types;
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| 33 | private Index<string> strings;
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| 34 | private Index<PersistenceData> data;
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| 35 | private Dictionary<object, uint> dataCache;
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| 36 | private Dictionary<uint, object> objectCache;
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| 37 |
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| 38 | public long Nodes { get; private set; }
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| 39 |
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| 40 | public PersistenceMapper() {
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| 41 | transformers = new ShortIndex<ITransformer>();
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| 42 | typeInfos = new Dictionary<Type, TypeInfo>();
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| 43 | types = new ShortIndex<Type>();
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| 44 | strings = new Index<string>();
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| 45 | data = new Index<PersistenceData>();
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| 46 | dataCache = new Dictionary<object, uint>(new ReferenceEqualityComparer<object>());
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| 47 | objectCache = new Dictionary<uint, object>();
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| 48 |
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| 49 | Nodes = 0;
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| 50 |
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| 51 | foreach (var transformer in ApplicationManager.Manager.GetInstances<ITransformer>().OrderBy(x => x.Order)) {
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| 52 | ushort id = transformers.GetIndex(transformer);
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| 53 | transformer.Initialize(id);
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| 54 | }
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| 55 | }
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| 56 |
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| 57 | public TypeInfo GetTypeInfo(Type type) {
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| 58 | TypeInfo typeInfo;
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| 59 | typeInfos.TryGetValue(type, out typeInfo);
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| 60 | if (typeInfo == null) {
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| 61 | var transformer = transformers.GetValues().Select(x => x.Item2).Where(x => x.CanTransformType(type)).FirstOrDefault();
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| 62 | typeInfo = new TypeInfo(type, transformer);
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| 63 | typeInfos.Add(type, typeInfo);
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| 64 | }
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| 65 | return typeInfo;
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| 66 | }
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| 67 | public IEnumerable<TypeInfo> GetTypeInfos() {
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| 68 | return typeInfos.Values;
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| 69 | }
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| 70 | public IEnumerable<Type> GetTypes() {
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| 71 | return typeInfos.Values.Select(x => x.Type);
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| 72 | }
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| 73 |
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| 74 | public ushort GetTypeId(Type type) {
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| 75 | return types.GetIndex(type);
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| 76 | }
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| 77 | public Type GetType(ushort typeId) {
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| 78 | return types.GetValue(typeId);
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| 79 | }
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| 80 |
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| 81 | public uint GetStringId(string str) {
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| 82 | return strings.GetIndex(str);
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| 83 | }
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| 84 | public string GetString(uint stringId) {
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| 85 | return strings.GetValue(stringId);
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| 86 | }
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| 87 |
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| 88 | public void Cache(object o, PersistenceData data) {
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| 89 | dataCache.Add(o, this.data.GetIndex(data));
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| 90 | }
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| 91 | public void Cache(PersistenceData data, object o) {
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| 92 | objectCache.Add(this.data.GetIndex(data), o);
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| 93 | }
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| 94 |
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| 95 | public uint GetDataId(object o) {
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| 96 | if (o == null) return 0;
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| 97 | if (dataCache.ContainsKey(o)) return dataCache[o];
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| 98 |
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| 99 | var type = o.GetType();
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| 100 | var typeInfo = GetTypeInfo(type);
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| 101 | if (typeInfo.Transformer == null) throw new ArgumentException("Cannot serialize object of type " + o.GetType());
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| 102 | Nodes++;
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| 103 | typeInfo.Used++;
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| 104 | return data.GetIndex(typeInfo.Transformer.ToData(o, this));
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| 105 | }
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| 106 | public object GetObject(uint dataId) {
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| 107 | if (dataId == 0) return null;
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| 108 | if (objectCache.ContainsKey(dataId)) return objectCache[dataId];
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| 109 | var data = this.data.GetValue(dataId);
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| 110 | var transformer = transformers.GetValue(data.TransformerId);
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| 111 | return transformer.ToObject(data, this);
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| 112 | }
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| 113 |
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| 114 | public object CreateInstance(Type type) {
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| 115 | return GetTypeInfo(type).GetConstructor()();
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| 116 | }
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| 117 |
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| 118 | public static PersistenceMapper mapper;
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| 119 | public static PersistenceBundle ToBundle(object o) {
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| 120 | mapper = new PersistenceMapper();
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| 121 | var bundle = new PersistenceBundle();
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| 122 | bundle.RootId = mapper.GetDataId(o);
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| 123 | bundle.TransformerGuids = mapper.transformers.GetValues().Select(x => new Tuple<ushort, Guid>(x.Item1, x.Item2.Guid)).ToArray();
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| 124 | bundle.TypeNames = mapper.types.GetValues().Select(x => new Tuple<ushort, string>(x.Item1, x.Item2.AssemblyQualifiedName)).ToArray();
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| 125 | bundle.Strings = mapper.strings.GetValues().ToArray();
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| 126 | bundle.Data = mapper.data.GetValues().ToArray();
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| 127 | return bundle;
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| 128 | }
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| 129 | public static object ToObject(PersistenceBundle bundle) {
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| 130 | mapper = new PersistenceMapper();
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| 131 | mapper.types = new ShortIndex<Type>(bundle.TypeNames.Select(x => new Tuple<ushort, Type>(x.Item1, Type.GetType(x.Item2, true))));
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| 132 | mapper.strings = new Index<string>(bundle.Strings);
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| 133 | mapper.data = new Index<PersistenceData>(bundle.Data);
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| 134 | mapper.transformers = new ShortIndex<ITransformer>(
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| 135 | bundle.TransformerGuids.Select(x => new Tuple<ushort, ITransformer>(
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| 136 | x.Item1,
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| 137 | mapper.transformers.GetValues().Select(y => y.Item2).Where(y => y.Guid == x.Item2).First())
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| 138 | )
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| 139 | );
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| 140 | foreach (var type in mapper.types.GetValues().Select(x => x.Item2))
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| 141 | mapper.typeInfos.Add(type, new TypeInfo(type));
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| 142 |
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| 143 | return mapper.GetObject(bundle.RootId);
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| 144 | }
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| 145 | }
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| 146 | }
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