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source: trunk/sources/HeuristicLab.Persistence/3.3/Default/CompositeSerializers/Storable/StorableSerializer.cs @ 2983

Last change on this file since 2983 was 2983, checked in by epitzer, 14 years ago

add support for new StorableConstructor attribute (#900)

File size: 2.2 KB
Line 
1using System;
2using System.Collections.Generic;
3using System.Linq;
4using HeuristicLab.Persistence.Interfaces;
5using HeuristicLab.Persistence.Core;
6using System.Reflection;
7using HeuristicLab.Persistence.Auxiliary;
8
9namespace HeuristicLab.Persistence.Default.CompositeSerializers.Storable {
10
11  [EmptyStorableClass]
12  public class StorableSerializer : ICompositeSerializer {
13
14    public int Priority {
15      get { return 200; }
16    }
17
18    public bool CanSerialize(Type type) {
19      if (!ReflectionTools.HasDefaultConstructor(type))
20        return false;
21      while (type != null) {       
22        if (StorableAttribute.GetStorableMembers(type, false).Count() == 0 &&
23            !EmptyStorableClassAttribute.IsEmptyStorable(type))
24          return false;
25        type = type.BaseType;
26      }
27      return true;
28    }
29
30    public IEnumerable<Tag> CreateMetaInfo(object o) {
31      StorableHookAttribute.InvokeHook(HookType.BeforeSerialization, o);
32      return new Tag[] { };
33    }
34
35    public IEnumerable<Tag> Decompose(object obj) {
36      foreach (var accessor in StorableAttribute.GetStorableAccessors(obj)) {
37        yield return new Tag(accessor.Name, accessor.Get());
38      }
39    }
40
41    public object CreateInstance(Type type, IEnumerable<Tag> metaInfo) {
42      object instance = StorableConstructorAttribute.CallStorableConstructor(type);
43      if (instance == null)
44        instance = Activator.CreateInstance(type, true);
45      return instance;
46    }
47
48    public void Populate(object instance, IEnumerable<Tag> objects, Type type) {
49      var memberDict = new Dictionary<string, Tag>();
50      IEnumerator<Tag> iter = objects.GetEnumerator();
51      while (iter.MoveNext()) {
52        memberDict.Add(iter.Current.Name, iter.Current);
53      }
54      foreach (var accessor in StorableAttribute.GetStorableAccessors(instance)) {
55        if (memberDict.ContainsKey(accessor.Name)) {
56          accessor.Set(memberDict[accessor.Name].Value);
57        } else if (accessor.DefaultValue != null) {
58          accessor.Set(accessor.DefaultValue);
59        }
60      }
61      StorableHookAttribute.InvokeHook(HookType.AfterDeserialization, instance);
62    }
63  }
64}
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