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source: branches/PersistenceOverhaul/HeuristicLab.Persistence/4.0/Transformers/KeyValuePairTransformer.cs @ 13326

Last change on this file since 13326 was 13326, checked in by swagner, 7 years ago

#2520: Created plugin for new persistence implementation

File size: 2.0 KB
Line 
1#region License Information
2/* HeuristicLab
3 * Copyright (C) 2002-2012 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
4 *
5 * This file is part of HeuristicLab.
6 *
7 * HeuristicLab is free software: you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation, either version 3 of the License, or
10 * (at your option) any later version.
11 *
12 * HeuristicLab is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with HeuristicLab. If not, see <http://www.gnu.org/licenses/>.
19 */
20#endregion
21
22using System;
23using System.Collections.Generic;
24using HeuristicLab.Persistence.Data;
25
26namespace HeuristicLab.Persistence {
27  [Transformer("97B5CFC8-CDFA-4EB5-B4CD-5B3CFA5CD844", 219)]
28  internal sealed class KeyValuePairTransformer : TransformerBase {
29    public override bool CanTransformType(Type type) {
30      return type.IsGenericType && (type.GetGenericTypeDefinition() == typeof(KeyValuePair<,>));
31    }
32    public override PersistenceData ToData(object o, PersistenceMapper mapper) {
33      var data = new ArrayData<uint>(Id);
34      var type = o.GetType();
35      data.TypeId = mapper.GetTypeId(type);
36      data.Values = new uint[2];
37      data.Values[0] = mapper.GetDataId(type.GetProperty("Key").GetValue(o, null));
38      data.Values[1] = mapper.GetDataId(type.GetProperty("Value").GetValue(o, null));
39      return data;
40    }
41
42    public override object ToObject(PersistenceData data, PersistenceMapper mapper) {
43      var composite = (ArrayData<uint>)data;
44      var key = mapper.GetObject(composite.Values[0]);
45      var value = mapper.GetObject(composite.Values[1]);
46      return Activator.CreateInstance(mapper.GetType(composite.TypeId), key, value);
47    }
48  }
49}
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