Mercurial > pub > bltoolkit

comparison Source/Validation/ValidationContext.cs @ 0:f990fcb411a9

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Копия текущей версии из github
author cin
date Thu, 27 Mar 2014 21:46:09 +0400
parents
children
comparison
equal deleted inserted replaced
-1:000000000000 0:f990fcb411a9
1 using System;
2 using System.ComponentModel;
3 using System.Reflection;
4 using BLToolkit.Mapping;
5 using BLToolkit.Reflection;
6
7 namespace BLToolkit.Validation
8 {
9 public class ValidationContext
10 {
11 public delegate bool IsNullHandler(ValidationContext context);
12
13 private object _object;
14 public object Object
15 {
16 get { return _object; }
17 set { _object = value; }
18 }
19
20 private TypeAccessor _typeAccessor;
21 public TypeAccessor TypeAccessor
22 {
23 get
24 {
25 if (_typeAccessor == null)
26 _typeAccessor = TypeAccessor.GetAccessor(_object.GetType());
27
28 return _typeAccessor;
29 }
30 }
31
32 private PropertyDescriptor _propertyDescriptor;
33 public PropertyDescriptor PropertyDescriptor
34 {
35 get { return _propertyDescriptor; }
36 set { _propertyDescriptor = value; }
37 }
38
39 private IsNullHandler _isNull;
40 public IsNullHandler IsNull
41 {
42 get { return _isNull; }
43 set { _isNull = value; }
44 }
45
46 public bool IsValueNull
47 {
48 get { return _isNull(this); }
49 }
50
51 private object _value;
52 public object Value
53 {
54 get { return _value; }
55 set
56 {
57 _value = value;
58 _nullValue = null;
59 }
60 }
61
62 private MemberAccessor _memberAccessor;
63 public MemberAccessor MemberAccessor
64 {
65 get { return _memberAccessor; }
66 set
67 {
68 _memberAccessor = value;
69 _memberInfo = value != null? value.MemberInfo: null;
70 }
71 }
72
73 private MemberInfo _memberInfo;
74 public MemberInfo MemberInfo
75 {
76 get { return _memberInfo; }
77 }
78
79 private object _nullValue;
80 public object NullValue
81 {
82 get
83 {
84 if (_nullValue == null)
85 {
86 if (_value == null)
87 throw new InvalidOperationException("NullValue is undefined when Value == null");
88
89 ObjectMapper om = Map.GetObjectMapper(Object.GetType());
90 MemberMapper mm = om[MemberName, true];
91
92 _nullValue =
93 mm != null && mm.MapMemberInfo.Nullable && mm.MapMemberInfo.NullValue != null?
94 mm.MapMemberInfo.NullValue:
95 TypeAccessor.GetNullValue(Value.GetType());
96
97 if (_nullValue == null)
98 _nullValue = DBNull.Value;
99 }
100
101 return _nullValue;
102
103 }
104 }
105
106 public string MemberName
107 {
108 get
109 {
110 return
111 _memberInfo != null? _memberInfo.Name:
112 #if !SILVERLIGHT
113 _propertyDescriptor != null? _propertyDescriptor.Name:
114 #endif
115 null;
116 }
117 }
118 }
119 }