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comparison Source/Data/Sql/SqlProvider/MsSql2005SqlProvider.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;
3 using System.Text;
4
5 namespace BLToolkit.Data.Sql.SqlProvider
6 {
7 using Reflection;
8
9 public class MsSql2005SqlProvider : MsSqlSqlProvider
10 {
11 public override ISqlExpression ConvertExpression(ISqlExpression expr)
12 {
13 expr = base.ConvertExpression(expr);
14
15 if (expr is SqlFunction)
16 {
17 var func = (SqlFunction)expr;
18
19 switch (Type.GetTypeCode(TypeHelper.GetUnderlyingType(func.SystemType)))
20 {
21 case TypeCode.DateTime :
22
23 if (func.Name == "Convert")
24 {
25 var type1 = TypeHelper.GetUnderlyingType(func.Parameters[1].SystemType);
26
27 if (IsTimeDataType(func.Parameters[0]))
28 {
29 if (type1 == typeof(DateTime) || type1 == typeof(DateTimeOffset))
30 return new SqlExpression(
31 func.SystemType, "Cast(Convert(Char, {0}, 114) as DateTime)", Precedence.Primary, func.Parameters[1]);
32
33 if (func.Parameters[1].SystemType == typeof(string))
34 return func.Parameters[1];
35
36 return new SqlExpression(
37 func.SystemType, "Convert(Char, {0}, 114)", Precedence.Primary, func.Parameters[1]);
38 }
39
40 if (type1 == typeof(DateTime) || type1 == typeof(DateTimeOffset))
41 {
42 if (IsDateDataType(func.Parameters[0], "Datetime"))
43 return new SqlExpression(
44 func.SystemType, "Cast(Floor(Cast({0} as Float)) as DateTime)", Precedence.Primary, func.Parameters[1]);
45 }
46
47 if (func.Parameters.Length == 2 && func.Parameters[0] is SqlDataType && func.Parameters[0] == SqlDataType.DateTime)
48 return new SqlFunction(func.SystemType, func.Name, func.Precedence, func.Parameters[0], func.Parameters[1], new SqlValue(120));
49 }
50
51 break;
52 }
53 }
54
55 return expr;
56 }
57
58 protected override void BuildFunction(StringBuilder sb, SqlFunction func)
59 {
60 func = ConvertFunctionParameters(func);
61 base.BuildFunction(sb, func);
62 }
63
64 protected override ISqlProvider CreateSqlProvider()
65 {
66 return new MsSql2005SqlProvider();
67 }
68
69 protected override void BuildDataType(System.Text.StringBuilder sb, SqlDataType type)
70 {
71 switch (type.SqlDbType)
72 {
73 #if !MONO
74 case SqlDbType.DateTimeOffset :
75 case SqlDbType.DateTime2 :
76 #endif
77 case SqlDbType.Time :
78 case SqlDbType.Date : sb.Append("DateTime"); break;
79 default : base.BuildDataType(sb, type); break;
80 }
81 }
82 }
83 }