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comparison Source/Reflection/MetadataProvider/MetadataProviderBase.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.Collections.Generic;
3
4 using BLToolkit.Common;
5 using BLToolkit.DataAccess;
6
7 namespace BLToolkit.Reflection.MetadataProvider
8 {
9 using Extension;
10 using Mapping;
11
12 public delegate void OnCreateProvider(MetadataProviderBase parentProvider);
13 public delegate MetadataProviderBase CreateProvider();
14 public delegate MemberMapper EnsureMapperHandler(string mapName, string origName);
15
16 public abstract class MetadataProviderBase
17 {
18 #region Provider Support
19
20 public virtual void AddProvider(MetadataProviderBase provider)
21 {
22 }
23
24 public virtual void InsertProvider(int index, MetadataProviderBase provider)
25 {
26 }
27
28 public virtual MetadataProviderBase[] GetProviders()
29 {
30 return new MetadataProviderBase[0];
31 }
32
33 #endregion
34
35 #region GetFieldName
36
37 public virtual string GetFieldName(TypeExtension typeExtension, MemberAccessor member, out bool isSet)
38 {
39 isSet = false;
40 return member.Name;
41 }
42
43 #endregion
44
45 public virtual string GetSequenceName(TypeExtension typeExtension, MemberAccessor member, out bool isSet)
46 {
47 isSet = false;
48 return null;
49 }
50
51 #region GetFieldStorage
52
53 public virtual string GetFieldStorage(TypeExtension typeExtension, MemberAccessor member, out bool isSet)
54 {
55 isSet = false;
56 return null;
57 }
58
59 #endregion
60
61 #region GetInheritanceDiscriminator
62
63 public virtual bool GetInheritanceDiscriminator(TypeExtension typeExtension, MemberAccessor member, out bool isSet)
64 {
65 isSet = false;
66 return false;
67 }
68
69 #endregion
70
71 #region EnsureMapper
72
73 public virtual void EnsureMapper(TypeAccessor typeAccessor, MappingSchema mappingSchema, EnsureMapperHandler handler)
74 {
75 }
76
77 #endregion
78
79 #region GetMapIgnore
80
81 public virtual bool GetMapIgnore(TypeExtension typeExtension, MemberAccessor member, out bool isSet)
82 {
83 isSet = false;
84
85 return
86 TypeHelper.IsScalar(member.Type) == false;// ||
87 //(member.MemberInfo is FieldInfo && ((FieldInfo)member.MemberInfo).IsLiteral);
88 }
89
90 #endregion
91
92 #region GetMapField
93
94 public virtual MapFieldAttribute GetMapField(TypeExtension typeExtension, MemberAccessor member, out bool isSet)
95 {
96 isSet = false;
97 return null;
98 }
99
100 #endregion
101
102 #region GetDbType
103
104 [CLSCompliant(false)]
105 public virtual DbTypeAttribute GetDbType(TypeExtension typeExtension, MemberAccessor member, out bool isSet)
106 {
107 isSet = false;
108 return null;
109 }
110
111 #endregion
112
113 #region GetPrimaryKey
114
115 public virtual PrimaryKeyAttribute GetPrimaryKey(TypeExtension typeExtension, MemberAccessor member, out bool isSet)
116 {
117 isSet = false;
118 return null;
119 }
120
121 #endregion
122
123 #region GetTrimmable
124
125 public virtual bool GetTrimmable(TypeExtension typeExtension, MemberAccessor member, out bool isSet)
126 {
127 isSet = member.Type != typeof(string);
128 return isSet? false: TrimmableAttribute.Default.IsTrimmable;
129 }
130
131 #endregion
132
133 #region GetMapValues
134
135 public virtual MapValue[] GetMapValues(TypeExtension typeExtension, MemberAccessor member, out bool isSet)
136 {
137 isSet = false;
138 return null;
139 }
140
141 public virtual MapValue[] GetMapValues(TypeExtension typeExtension, Type type, out bool isSet)
142 {
143 isSet = false;
144 return null;
145 }
146
147 #endregion
148
149 #region GetDefaultValue
150
151 public virtual object GetDefaultValue(MappingSchema mappingSchema, TypeExtension typeExtension, MemberAccessor member, out bool isSet)
152 {
153 isSet = false;
154 return null;
155 }
156
157 public virtual object GetDefaultValue(MappingSchema mappingSchema, TypeExtension typeExtension, Type type, out bool isSet)
158 {
159 isSet = false;
160 return null;
161 }
162
163 #endregion
164
165 #region GetNullable
166
167 public virtual bool GetNullable(MappingSchema mappingSchema, TypeExtension typeExtension, MemberAccessor member, out bool isSet)
168 {
169 isSet = false;
170 return
171 //member.Type.IsClass ||
172 member.Type.IsGenericType && member.Type.GetGenericTypeDefinition() == typeof (Nullable<>)
173 /*||
174 member.Type == typeof(System.Data.Linq.Binary) ||
175 member.Type == typeof(byte[])*/;
176 }
177
178 #endregion
179
180 #region GetLazyInstance
181
182 public virtual bool GetLazyInstance(MappingSchema mappingSchema, TypeExtension typeExtension, MemberAccessor member, out bool isSet)
183 {
184 isSet = false;
185 return false;
186 }
187
188 #endregion
189
190 #region GetNullValue
191
192 public virtual object GetNullValue(MappingSchema mappingSchema, TypeExtension typeExtension, MemberAccessor member, out bool isSet)
193 {
194 isSet = false;
195
196 if (member.Type.IsEnum)
197 return null;
198
199 var value = mappingSchema.GetNullValue(member.Type);
200
201 if (value is Type && (Type)value == typeof(DBNull))
202 {
203 value = DBNull.Value;
204
205 if (member.Type == typeof(string))
206 value = null;
207 }
208
209 return value;
210 }
211
212 #endregion
213
214 #region GetDbName
215
216 public virtual string GetDatabaseName(Type type, ExtensionList extensions, out bool isSet)
217 {
218 isSet = false;
219 return null;
220 }
221
222 #endregion
223
224 #region GetOwnerName
225
226 public virtual string GetOwnerName(Type type, ExtensionList extensions, out bool isSet)
227 {
228 isSet = false;
229 return null;
230 }
231
232 #endregion
233
234 #region GetTableName
235
236 public virtual string GetTableName(Type type, ExtensionList extensions, out bool isSet)
237 {
238 isSet = false;
239 return
240 type.IsInterface && type.Name.StartsWith("I")
241 ? type.Name.Substring(1)
242 : type.Name;
243 }
244
245 #endregion
246
247 #region GetPrimaryKeyOrder
248
249 public virtual int GetPrimaryKeyOrder(Type type, TypeExtension typeExt, MemberAccessor member, out bool isSet)
250 {
251 isSet = false;
252 return 0;
253 }
254
255 #endregion
256
257 #region GetNonUpdatableAttribute
258
259 public virtual NonUpdatableAttribute GetNonUpdatableAttribute(Type type, TypeExtension typeExt, MemberAccessor member, out bool isSet)
260 {
261 isSet = false;
262 return null;
263 }
264
265 #endregion
266
267 #region GetSqlIgnore
268
269 public virtual bool GetSqlIgnore(TypeExtension typeExtension, MemberAccessor member, out bool isSet)
270 {
271 isSet = false;
272 return false;
273 }
274
275 #endregion
276
277 #region GetRelations
278
279 public virtual List<MapRelationBase> GetRelations(MappingSchema schema, ExtensionList typeExt, Type master, Type slave, out bool isSet)
280 {
281 isSet = false;
282 return new List<MapRelationBase>();
283 }
284
285 protected static List<string> GetPrimaryKeyFields(MappingSchema schema, TypeAccessor ta, TypeExtension tex)
286 {
287 var mdp = schema.MetadataProvider;
288 var keys = new List<string>();
289
290 foreach (MemberAccessor sma in ta)
291 {
292 bool isSetFlag;
293
294 mdp.GetPrimaryKeyOrder(ta.Type, tex, sma, out isSetFlag);
295
296 if (isSetFlag)
297 {
298 var name = mdp.GetFieldName(tex, sma, out isSetFlag);
299 keys.Add(name);
300 }
301 }
302
303 return keys;
304 }
305
306 #endregion
307
308 #region GetAssociation
309
310 public virtual Association GetAssociation(TypeExtension typeExtension, MemberAccessor member)
311 {
312 return null;
313 }
314
315 #endregion
316
317 #region GetInheritanceMapping
318
319 public virtual InheritanceMappingAttribute[] GetInheritanceMapping(Type type, TypeExtension typeExtension)
320 {
321 return Array<InheritanceMappingAttribute>.Empty;
322 }
323
324 #endregion
325
326 #region Static Members
327
328 public static event OnCreateProvider OnCreateProvider;
329
330 private static CreateProvider _createProvider = CreateInternal;
331 public static CreateProvider CreateProvider
332 {
333 get { return _createProvider; }
334 set { _createProvider = value ?? new CreateProvider(CreateInternal); }
335 }
336
337 private static MetadataProviderBase CreateInternal()
338 {
339 var list = new MetadataProviderList();
340
341 if (OnCreateProvider != null)
342 OnCreateProvider(list);
343
344 return list;
345 }
346
347 #endregion
348 }
349 }