[1360] | 1 | using System;
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| 2 | using System.Collections.Generic;
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| 3 | using System.Reflection;
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| 4 |
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| 5 | namespace HeuristicLab.Persistence.Core {
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| 6 |
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[1404] | 7 |
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[1360] | 8 | [AttributeUsage(
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[1404] | 9 | AttributeTargets.Class,
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| 10 | AllowMultiple=false,
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| 11 | Inherited=false)]
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| 12 | public class EmptyStorableClassAttribute : Attribute {
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| 13 | private static readonly Dictionary<Type, bool> emptyTypeInfo = new Dictionary<Type, bool>();
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| 14 | public static bool IsEmpyStorable(object o) {
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| 15 | Type type = o.GetType();
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| 16 | if (emptyTypeInfo.ContainsKey(type))
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| 17 | return emptyTypeInfo[type];
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| 18 | foreach (var attribute in o.GetType().GetCustomAttributes(false)) {
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| 19 | EmptyStorableClassAttribute empty = attribute as EmptyStorableClassAttribute;
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| 20 | if (empty != null) {
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| 21 | emptyTypeInfo.Add(type, true);
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| 22 | return true;
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| 23 | }
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| 24 | }
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| 25 | int nFields = 0;
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| 26 | foreach ( MemberInfo memberInfo in type.GetMembers(BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic) ) {
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| 27 | if (memberInfo.MemberType == MemberTypes.Field ||
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| 28 | memberInfo.MemberType == MemberTypes.Property)
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| 29 | nFields += 1;
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| 30 | }
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| 31 | if (nFields == 0) {
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| 32 | emptyTypeInfo.Add(type, true);
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| 33 | return true;
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| 34 | }
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| 35 | emptyTypeInfo.Add(type, false);
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| 36 | return false;
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| 37 | }
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| 38 | }
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| 39 |
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| 40 | [AttributeUsage(
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[1360] | 41 | AttributeTargets.Field | AttributeTargets.Property,
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| 42 | AllowMultiple=false,
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| 43 | Inherited=false)]
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| 44 | public class StorableAttribute : Attribute {
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| 45 |
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| 46 | public string Name { get; set; }
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| 47 | public object DefaultValue { get; set; }
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| 48 |
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| 49 | private const BindingFlags instanceMembers =
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| 50 | BindingFlags.Instance |
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| 51 | BindingFlags.Public |
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| 52 | BindingFlags.NonPublic;
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| 53 |
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| 54 | public static IEnumerable<KeyValuePair<StorableAttribute, MemberInfo>> GetStorableMembers(Type type) {
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| 55 | return GetStorableMembers(type, true);
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| 56 | }
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| 57 |
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| 58 | public static IEnumerable<KeyValuePair<StorableAttribute, MemberInfo>>
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| 59 | GetStorableMembers(Type type, bool inherited) {
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| 60 | if (type.BaseType != null)
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| 61 | foreach ( var pair in GetStorableMembers(type.BaseType) )
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| 62 | yield return pair;
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| 63 | foreach (MemberInfo memberInfo in type.GetMembers(instanceMembers)) {
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| 64 | foreach (object attribute in memberInfo.GetCustomAttributes(false)) {
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| 65 | StorableAttribute storableAttribute =
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| 66 | attribute as StorableAttribute;
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| 67 | if (storableAttribute != null) {
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| 68 | yield return new KeyValuePair<StorableAttribute, MemberInfo>(storableAttribute, memberInfo);
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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 Dictionary<string, DataMemberAccessor> GetAutostorableAccessors(object obj) {
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| 75 | Dictionary<string, DataMemberAccessor> storableAccessors =
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| 76 | new Dictionary<string, DataMemberAccessor>();
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| 77 | foreach (KeyValuePair<StorableAttribute, MemberInfo> pair in GetStorableMembers(obj.GetType())) {
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| 78 | storableAccessors.Add(pair.Value.Name,
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| 79 | new DataMemberAccessor(pair.Value, pair.Key, obj));
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| 80 | }
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| 81 | return storableAccessors;
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| 82 | }
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| 83 | }
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| 84 | }
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