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comparison Source/Data/DataProvider/OdbcDataProvider.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.Data.Common;
4 using System.Data.Odbc;
5
6 namespace BLToolkit.Data.DataProvider
7 {
8 using Sql.SqlProvider;
9
10 /// <summary>
11 /// Implements access to the Data Provider for ODBC.
12 /// </summary>
13 /// <remarks>
14 /// See the <see cref="DbManager.AddDataProvider(DataProviderBase)"/> method to find an example.
15 /// </remarks>
16 /// <seealso cref="DbManager.AddDataProvider(DataProviderBase)">AddDataManager Method</seealso>
17 public class OdbcDataProvider : DataProviderBase
18 {
19 /// <summary>
20 /// Creates the database connection object.
21 /// </summary>
22 /// <remarks>
23 /// See the <see cref="DbManager.AddDataProvider(DataProviderBase)"/> method to find an example.
24 /// </remarks>
25 /// <seealso cref="DbManager.AddDataProvider(DataProviderBase)">AddDataManager Method</seealso>
26 /// <returns>The database connection object.</returns>
27 public override IDbConnection CreateConnectionObject()
28 {
29 return new OdbcConnection();
30 }
31
32 /// <summary>
33 /// Creates the data adapter object.
34 /// </summary>
35 /// <remarks>
36 /// See the <see cref="DbManager.AddDataProvider(DataProviderBase)"/> method to find an example.
37 /// </remarks>
38 /// <seealso cref="DbManager.AddDataProvider(DataProviderBase)">AddDataManager Method</seealso>
39 /// <returns>A data adapter object.</returns>
40 public override DbDataAdapter CreateDataAdapterObject()
41 {
42 return new OdbcDataAdapter();
43 }
44
45 /// <summary>
46 /// Populates the specified <see cref="IDbCommand"/> object's Parameters collection with
47 /// parameter information for the stored procedure specified in the <see cref="IDbCommand"/>.
48 /// </summary>
49 /// <remarks>
50 /// See the <see cref="DbManager.AddDataProvider(DataProviderBase)"/> method to find an example.
51 /// </remarks>
52 /// <seealso cref="DbManager.AddDataProvider(DataProviderBase)">AddDataManager Method</seealso>
53 /// <param name="command">The <see cref="IDbCommand"/> referencing the stored procedure for which the parameter
54 /// information is to be derived. The derived parameters will be populated into
55 /// the Parameters of this command.</param>
56 public override bool DeriveParameters(IDbCommand command)
57 {
58 OdbcCommandBuilder.DeriveParameters((OdbcCommand)command);
59 return true;
60 }
61
62 public override object Convert(object value, ConvertType convertType)
63 {
64 switch (convertType)
65 {
66 case ConvertType.ExceptionToErrorNumber:
67 if (value is OdbcException)
68 {
69 var ex = (OdbcException)value;
70 if (ex.Errors.Count > 0)
71 return ex.Errors[0].NativeError;
72 }
73 break;
74 }
75
76 return base.Convert(value, convertType);
77 }
78
79 public override ISqlProvider CreateSqlProvider()
80 {
81 throw new NotSupportedException();
82 }
83
84 /// <summary>
85 /// Returns connection type.
86 /// </summary>
87 /// <remarks>
88 /// See the <see cref="DbManager.AddDataProvider(DataProviderBase)"/> method to find an example.
89 /// </remarks>
90 /// <seealso cref="DbManager.AddDataProvider(DataProviderBase)">AddDataManager Method</seealso>
91 /// <value>An instance of the <see cref="Type"/> class.</value>
92 public override Type ConnectionType
93 {
94 get { return typeof(OdbcConnection); }
95 }
96
97 public const string NameString = DataProvider.ProviderName.Odbc;
98
99 /// <summary>
100 /// Returns the data provider name.
101 /// </summary>
102 /// <remarks>
103 /// See the <see cref="DbManager.AddDataProvider(DataProviderBase)"/> method to find an example.
104 /// </remarks>
105 /// <seealso cref="DbManager.AddDataProvider(DataProviderBase)">AddDataProvider Method</seealso>
106 /// <value>Data provider name.</value>
107 public override string Name
108 {
109 get { return NameString; }
110 }
111 }
112 }