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source: trunk/sources/HeuristicLab.Persistence/3.3/Default/CompositeSerializers/EnumerableSerializer.cs @ 15632

Last change on this file since 15632 was 15583, checked in by swagner, 7 years ago

#2640: Updated year of copyrights in license headers

File size: 2.9 KB
RevLine 
[3742]1#region License Information
2/* HeuristicLab
[15583]3 * Copyright (C) 2002-2018 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
[3742]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;
[1454]23using System.Collections;
[4068]24using System.Collections.Generic;
[1454]25using System.Reflection;
[4068]26using HeuristicLab.Persistence.Auxiliary;
[1454]27using HeuristicLab.Persistence.Core;
[4068]28using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
[1454]29using HeuristicLab.Persistence.Interfaces;
30
[1823]31namespace HeuristicLab.Persistence.Default.CompositeSerializers {
[1454]32
[3017]33  [StorableClass]
[3036]34  internal sealed class EnumerableSerializer : ICompositeSerializer {
[1454]35
[4806]36    [StorableConstructor]
37    private EnumerableSerializer(bool deserializing) { }
38    public EnumerableSerializer() { }
39
[1539]40    public int Priority {
41      get { return 100; }
42    }
43
44
[1823]45    public bool CanSerialize(Type type) {
[1454]46      return
[1705]47        ReflectionTools.HasDefaultConstructor(type) &&
[1454]48        type.GetInterface(typeof(IEnumerable).FullName) != null &&
49        type.GetMethod("Add") != null &&
[1790]50        type.GetMethod("Add").GetParameters().Length == 1;
[1454]51    }
52
[2993]53    public string JustifyRejection(Type type) {
54      if (!ReflectionTools.HasDefaultConstructor(type))
55        return "no default constructor";
56      if (type.GetInterface(typeof(IEnumerable).FullName) == null)
57        return "interface IEnumerable not implemented";
58      if (type.GetMethod("Add") == null)
[4068]59        return "no 'Add()' method";
[2993]60      return "no 'Add()' method with one argument";
61    }
62
[1553]63    public IEnumerable<Tag> CreateMetaInfo(object o) {
64      return new Tag[] { };
65    }
66
[1542]67    public IEnumerable<Tag> Decompose(object obj) {
[1454]68      foreach (object o in (IEnumerable)obj) {
[1790]69        yield return new Tag(o);
[1454]70      }
71    }
72
[1553]73    public object CreateInstance(Type type, IEnumerable<Tag> metaInfo) {
[1454]74      return Activator.CreateInstance(type, true);
75    }
76
[1553]77    public void Populate(object instance, IEnumerable<Tag> tags, Type type) {
[1454]78      MethodInfo addMethod = type.GetMethod("Add");
[1625]79      try {
80        foreach (var tag in tags)
81          addMethod.Invoke(instance, new[] { tag.Value });
[4068]82      }
83      catch (Exception e) {
[1625]84        throw new PersistenceException("Exception caught while trying to populate enumerable.", e);
85      }
[1454]86    }
[1553]87  }
[1790]88}
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