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comparison Source/Reflection/MemberAccessor.cs @ 0:f990fcb411a9

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Копия текущей версии из github
author cin
date Thu, 27 Mar 2014 21:46:09 +0400
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-1:000000000000 0:f990fcb411a9
1 using System;
2 using System.Data.SqlTypes;
3 using System.Linq.Expressions;
4 using System.Reflection;
5 using System.ComponentModel;
6 using BLToolkit.Data.Linq;
7
8 #if !SILVERLIGHT && !DATA
9 using BLToolkit.ComponentModel;
10 #endif
11
12 namespace BLToolkit.Reflection
13 {
14 public abstract class MemberAccessor
15 {
16 protected MemberAccessor(TypeAccessor typeAccessor, MemberInfo memberInfo)
17 {
18 TypeAccessor = typeAccessor;
19 MemberInfo = memberInfo;
20 }
21
22 #region Public Properties
23
24 public MemberInfo MemberInfo { get; private set; }
25 public TypeAccessor TypeAccessor { get; private set; }
26
27 #if !SILVERLIGHT && !DATA
28
29 private PropertyDescriptor _propertyDescriptor;
30 public PropertyDescriptor PropertyDescriptor
31 {
32 get
33 {
34 if (_propertyDescriptor == null)
35 _propertyDescriptor = new MemberPropertyDescriptor(TypeAccessor.OriginalType, Name);
36
37 return _propertyDescriptor;
38 }
39 }
40
41 #endif
42
43 public virtual bool HasGetter { get { return false; } }
44 public virtual bool HasSetter { get { return false; } }
45
46 public Type Type
47 {
48 get
49 {
50 return MemberInfo is PropertyInfo?
51 ((PropertyInfo)MemberInfo).PropertyType:
52 ((FieldInfo) MemberInfo).FieldType;
53 }
54 }
55
56 public string Name
57 {
58 get { return MemberInfo.Name; }
59 }
60
61 private Type _underlyingType;
62 public Type UnderlyingType
63 {
64 get { return _underlyingType ?? (_underlyingType = TypeHelper.GetUnderlyingType(Type)); }
65 }
66
67 #endregion
68
69 #region Public Methods
70
71 public bool IsDefined<T>() where T : Attribute
72 {
73 return MemberInfo.IsDefined(typeof(T), true);
74 }
75
76 [Obsolete("Use generic version instead")]
77 public Attribute GetAttribute(Type attributeType)
78 {
79 var attrs = MemberInfo.GetCustomAttributes(attributeType, true);
80
81 return attrs.Length > 0? (Attribute)attrs[0]: null;
82 }
83
84 public T GetAttribute<T>() where T : Attribute
85 {
86 var attrs = MemberInfo.GetCustomAttributes(typeof(T), true);
87
88 return attrs.Length > 0? (T)attrs[0]: null;
89 }
90
91 [Obsolete("Use generic version instead")]
92 public object[] GetAttributes(Type attributeType)
93 {
94 var attrs = MemberInfo.GetCustomAttributes(attributeType, true);
95
96 return attrs.Length > 0? attrs: null;
97 }
98
99 public T[] GetAttributes<T>() where T : Attribute
100 {
101 Array attrs = MemberInfo.GetCustomAttributes(typeof(T), true);
102
103 return attrs.Length > 0? (T[])attrs: null;
104 }
105
106 public object[] GetAttributes()
107 {
108 var attrs = MemberInfo.GetCustomAttributes(true);
109
110 return attrs.Length > 0? attrs: null;
111 }
112
113 public object[] GetTypeAttributes(Type attributeType)
114 {
115 return TypeHelper.GetAttributes(TypeAccessor.OriginalType, attributeType);
116 }
117
118 #endregion
119
120 #region Set/Get Value
121
122 public virtual Boolean IsNull(object o)
123 {
124 return true;
125 }
126
127 static object GetDefaultValue<T>()
128 {
129 return default(T);
130 }
131
132 object _defaultValue;
133
134 public virtual object GetValue(object o)
135 {
136 if (_defaultValue == null && Type.IsValueType && !TypeHelper.IsNullableType(Type))
137 {
138 var mi = ReflectionHelper.Expressor<object>.MethodExpressor(_ => GetDefaultValue<int>());
139
140 _defaultValue =
141 Expression.Lambda<Func<object>>(
142 Expression.Call(mi.GetGenericMethodDefinition().MakeGenericMethod(Type)))
143 .Compile()();
144 }
145
146 return _defaultValue;
147 }
148
149 public virtual void SetValue(object o, object value)
150 {
151 }
152
153 public virtual void CloneValue(object source, object dest)
154 {
155 var value = GetValue(source);
156
157 SetValue(dest, value is ICloneable? ((ICloneable)value).Clone(): value);
158 }
159
160
161 // Simple types getters.
162 //
163 [CLSCompliant(false)]
164 public virtual SByte GetSByte (object o) { return (SByte) GetValue(o); }
165 public virtual Int16 GetInt16 (object o) { return (Int16) GetValue(o); }
166 public virtual Int32 GetInt32 (object o) { return (Int32) GetValue(o); }
167 public virtual Int64 GetInt64 (object o) { return (Int64) GetValue(o); }
168
169 public virtual Byte GetByte (object o) { return (Byte) GetValue(o); }
170 [CLSCompliant(false)]
171 public virtual UInt16 GetUInt16 (object o) { return (UInt16) GetValue(o); }
172 [CLSCompliant(false)]
173 public virtual UInt32 GetUInt32 (object o) { return (UInt32) GetValue(o); }
174 [CLSCompliant(false)]
175 public virtual UInt64 GetUInt64 (object o) { return (UInt64) GetValue(o); }
176
177 public virtual Boolean GetBoolean (object o) { return (Boolean) GetValue(o); }
178 public virtual Char GetChar (object o) { return (Char) GetValue(o); }
179 public virtual Single GetSingle (object o) { return (Single) GetValue(o); }
180 public virtual Double GetDouble (object o) { return (Double) GetValue(o); }
181 public virtual Decimal GetDecimal (object o) { return (Decimal) GetValue(o); }
182 public virtual Guid GetGuid (object o) { return (Guid) GetValue(o); }
183 public virtual DateTime GetDateTime(object o) { return (DateTime)GetValue(o); }
184 public virtual TimeSpan GetTimeSpan(object o) { return (TimeSpan)GetValue(o); }
185 public virtual DateTimeOffset GetDateTimeOffset(object o) { return (DateTimeOffset)GetValue(o); }
186
187 // Nullable types getters.
188 //
189 [CLSCompliant(false)]
190 public virtual SByte? GetNullableSByte (object o) { return (SByte?) GetValue(o); }
191 public virtual Int16? GetNullableInt16 (object o) { return (Int16?) GetValue(o); }
192 public virtual Int32? GetNullableInt32 (object o) { return (Int32?) GetValue(o); }
193 public virtual Int64? GetNullableInt64 (object o) { return (Int64?) GetValue(o); }
194
195 public virtual Byte? GetNullableByte (object o) { return (Byte?) GetValue(o); }
196 [CLSCompliant(false)]
197 public virtual UInt16? GetNullableUInt16 (object o) { return (UInt16?) GetValue(o); }
198 [CLSCompliant(false)]
199 public virtual UInt32? GetNullableUInt32 (object o) { return (UInt32?) GetValue(o); }
200 [CLSCompliant(false)]
201 public virtual UInt64? GetNullableUInt64 (object o) { return (UInt64?) GetValue(o); }
202
203 public virtual Boolean? GetNullableBoolean (object o) { return (Boolean?) GetValue(o); }
204 public virtual Char? GetNullableChar (object o) { return (Char?) GetValue(o); }
205 public virtual Single? GetNullableSingle (object o) { return (Single?) GetValue(o); }
206 public virtual Double? GetNullableDouble (object o) { return (Double?) GetValue(o); }
207 public virtual Decimal? GetNullableDecimal (object o) { return (Decimal?) GetValue(o); }
208 public virtual Guid? GetNullableGuid (object o) { return (Guid?) GetValue(o); }
209 public virtual DateTime? GetNullableDateTime(object o) { return (DateTime?)GetValue(o); }
210 public virtual TimeSpan? GetNullableTimeSpan(object o) { return (TimeSpan?)GetValue(o); }
211 public virtual DateTimeOffset? GetNullableDateTimeOffset(object o) { return (DateTimeOffset?)GetValue(o); }
212
213 #if !SILVERLIGHT
214
215 // SQL type getters.
216 //
217 public virtual SqlByte GetSqlByte (object o) { return (SqlByte) GetValue(o); }
218 public virtual SqlInt16 GetSqlInt16 (object o) { return (SqlInt16) GetValue(o); }
219 public virtual SqlInt32 GetSqlInt32 (object o) { return (SqlInt32) GetValue(o); }
220 public virtual SqlInt64 GetSqlInt64 (object o) { return (SqlInt64) GetValue(o); }
221 public virtual SqlSingle GetSqlSingle (object o) { return (SqlSingle) GetValue(o); }
222 public virtual SqlBoolean GetSqlBoolean (object o) { return (SqlBoolean) GetValue(o); }
223 public virtual SqlDouble GetSqlDouble (object o) { return (SqlDouble) GetValue(o); }
224 public virtual SqlDateTime GetSqlDateTime(object o) { return (SqlDateTime)GetValue(o); }
225 public virtual SqlDecimal GetSqlDecimal (object o) { return (SqlDecimal) GetValue(o); }
226 public virtual SqlMoney GetSqlMoney (object o) { return (SqlMoney) GetValue(o); }
227 public virtual SqlGuid GetSqlGuid (object o) { return (SqlGuid) GetValue(o); }
228 public virtual SqlString GetSqlString (object o) { return (SqlString) GetValue(o); }
229
230 #endif
231
232 // Simple type setters.
233 //
234 [CLSCompliant(false)]
235 public virtual void SetSByte (object o, SByte value) { SetValue(o, value); }
236 public virtual void SetInt16 (object o, Int16 value) { SetValue(o, value); }
237 public virtual void SetInt32 (object o, Int32 value) { SetValue(o, value); }
238 public virtual void SetInt64 (object o, Int64 value) { SetValue(o, value); }
239
240 public virtual void SetByte (object o, Byte value) { SetValue(o, value); }
241 [CLSCompliant(false)]
242 public virtual void SetUInt16 (object o, UInt16 value) { SetValue(o, value); }
243 [CLSCompliant(false)]
244 public virtual void SetUInt32 (object o, UInt32 value) { SetValue(o, value); }
245 [CLSCompliant(false)]
246 public virtual void SetUInt64 (object o, UInt64 value) { SetValue(o, value); }
247
248 public virtual void SetBoolean (object o, Boolean value) { SetValue(o, value); }
249 public virtual void SetChar (object o, Char value) { SetValue(o, value); }
250 public virtual void SetSingle (object o, Single value) { SetValue(o, value); }
251 public virtual void SetDouble (object o, Double value) { SetValue(o, value); }
252 public virtual void SetDecimal (object o, Decimal value) { SetValue(o, value); }
253 public virtual void SetGuid (object o, Guid value) { SetValue(o, value); }
254 public virtual void SetDateTime(object o, DateTime value) { SetValue(o, value); }
255 public virtual void SetTimeSpan(object o, TimeSpan value) { SetValue(o, value); }
256 public virtual void SetDateTimeOffset(object o, DateTimeOffset value) { SetValue(o, value); }
257
258 // Simple type setters.
259 //
260 [CLSCompliant(false)]
261 public virtual void SetNullableSByte (object o, SByte? value) { SetValue(o, value); }
262 public virtual void SetNullableInt16 (object o, Int16? value) { SetValue(o, value); }
263 public virtual void SetNullableInt32 (object o, Int32? value) { SetValue(o, value); }
264 public virtual void SetNullableInt64 (object o, Int64? value) { SetValue(o, value); }
265
266 public virtual void SetNullableByte (object o, Byte? value) { SetValue(o, value); }
267 [CLSCompliant(false)]
268 public virtual void SetNullableUInt16 (object o, UInt16? value) { SetValue(o, value); }
269 [CLSCompliant(false)]
270 public virtual void SetNullableUInt32 (object o, UInt32? value) { SetValue(o, value); }
271 [CLSCompliant(false)]
272 public virtual void SetNullableUInt64 (object o, UInt64? value) { SetValue(o, value); }
273
274 public virtual void SetNullableBoolean (object o, Boolean? value) { SetValue(o, value); }
275 public virtual void SetNullableChar (object o, Char? value) { SetValue(o, value); }
276 public virtual void SetNullableSingle (object o, Single? value) { SetValue(o, value); }
277 public virtual void SetNullableDouble (object o, Double? value) { SetValue(o, value); }
278 public virtual void SetNullableDecimal (object o, Decimal? value) { SetValue(o, value); }
279 public virtual void SetNullableGuid (object o, Guid? value) { SetValue(o, value); }
280 public virtual void SetNullableDateTime(object o, DateTime? value) { SetValue(o, value); }
281 public virtual void SetNullableTimeSpan(object o, TimeSpan? value) { SetValue(o, value); }
282 public virtual void SetNullableDateTimeOffset(object o, DateTimeOffset? value) { SetValue(o, value); }
283
284 #if !SILVERLIGHT
285
286 // SQL type setters.
287 //
288 public virtual void SetSqlByte (object o, SqlByte value) { SetValue(o, value); }
289 public virtual void SetSqlInt16 (object o, SqlInt16 value) { SetValue(o, value); }
290 public virtual void SetSqlInt32 (object o, SqlInt32 value) { SetValue(o, value); }
291 public virtual void SetSqlInt64 (object o, SqlInt64 value) { SetValue(o, value); }
292 public virtual void SetSqlSingle (object o, SqlSingle value) { SetValue(o, value); }
293 public virtual void SetSqlBoolean (object o, SqlBoolean value) { SetValue(o, value); }
294 public virtual void SetSqlDouble (object o, SqlDouble value) { SetValue(o, value); }
295 public virtual void SetSqlDateTime(object o, SqlDateTime value) { SetValue(o, value); }
296 public virtual void SetSqlDecimal (object o, SqlDecimal value) { SetValue(o, value); }
297 public virtual void SetSqlMoney (object o, SqlMoney value) { SetValue(o, value); }
298 public virtual void SetSqlGuid (object o, SqlGuid value) { SetValue(o, value); }
299 public virtual void SetSqlString (object o, SqlString value) { SetValue(o, value); }
300
301 #endif
302
303 #endregion
304 }
305 }