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comparison Source/Data/Linq/TableFunctionAttribute.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 using System.Linq;
4 using System.Linq.Expressions;
5 using System.Reflection;
6
7 using BLToolkit.Data.Sql;
8
9 namespace BLToolkit.Data.Linq
10 {
11 [SerializableAttribute]
12 [AttributeUsageAttribute(AttributeTargets.Method, AllowMultiple = true, Inherited = false)]
13 public class TableFunctionAttribute : Attribute
14 {
15 public TableFunctionAttribute()
16 {
17 }
18
19 public TableFunctionAttribute(string name)
20 {
21 Name = name;
22 }
23
24 public TableFunctionAttribute(string name, params int[] argIndices)
25 {
26 Name = name;
27 ArgIndices = argIndices;
28 }
29
30 public TableFunctionAttribute(string sqlProvider, string name)
31 {
32 SqlProvider = sqlProvider;
33 Name = name;
34 }
35
36 public TableFunctionAttribute(string sqlProvider, string name, params int[] argIndices)
37 {
38 SqlProvider = sqlProvider;
39 Name = name;
40 ArgIndices = argIndices;
41 }
42
43 public string SqlProvider { get; set; }
44 public string Name { get; set; }
45 public int[] ArgIndices { get; set; }
46
47 protected ISqlExpression[] ConvertArgs(MemberInfo member, ISqlExpression[] args)
48 {
49 if (member is MethodInfo)
50 {
51 var method = (MethodInfo)member;
52
53 if (method.DeclaringType.IsGenericType)
54 args = args.Concat(method.DeclaringType.GetGenericArguments().Select(t => (ISqlExpression)SqlDataType.GetDataType(t))).ToArray();
55
56 if (method.IsGenericMethod)
57 args = args.Concat(method.GetGenericArguments().Select(t => (ISqlExpression)SqlDataType.GetDataType(t))).ToArray();
58 }
59
60 if (ArgIndices != null)
61 {
62 var idxs = new ISqlExpression[ArgIndices.Length];
63
64 for (var i = 0; i < ArgIndices.Length; i++)
65 idxs[i] = args[ArgIndices[i]];
66
67 return idxs;
68 }
69
70 return args;
71 }
72
73 public virtual void SetTable(SqlTable table, MemberInfo member, IEnumerable<Expression> arguments, IEnumerable<ISqlExpression> sqlArgs)
74 {
75 table.SqlTableType = SqlTableType.Function;
76 table.Name = Name ?? member.Name;
77 table.PhysicalName = Name ?? member.Name;
78 table.TableArguments = ConvertArgs(member, sqlArgs.ToArray());
79 }
80 }
81 }