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1 | office | 1 | // |
2 | // System.Data.Common.DbParameter.cs |
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3 | // |
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4 | // Author: |
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5 | // Tim Coleman (tim@timcoleman.com) |
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6 | // |
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7 | // Copyright (C) Tim Coleman, 2003 |
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8 | // |
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9 | |||
10 | // |
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11 | // Copyright (C) 2004 Novell, Inc (http://www.novell.com) |
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12 | // |
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13 | // Permission is hereby granted, free of charge, to any person obtaining |
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14 | // a copy of this software and associated documentation files (the |
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15 | // "Software"), to deal in the Software without restriction, including |
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16 | // without limitation the rights to use, copy, modify, merge, publish, |
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17 | // distribute, sublicense, and/or sell copies of the Software, and to |
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18 | // permit persons to whom the Software is furnished to do so, subject to |
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19 | // the following conditions: |
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20 | // |
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21 | // The above copyright notice and this permission notice shall be |
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22 | // included in all copies or substantial portions of the Software. |
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23 | // |
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24 | // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
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25 | // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
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26 | // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
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27 | // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE |
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28 | // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION |
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29 | // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION |
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30 | // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
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31 | // |
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32 | |||
33 | |||
34 | using System.Collections.Generic ; |
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35 | using System.ComponentModel; |
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36 | |||
37 | namespace System.Data.Common { |
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38 | public abstract class DbParameter : IDbDataParameter, IDataParameter |
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39 | { |
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40 | #region Constructors |
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41 | internal static Dictionary<DbType, Type> dbTypeMapping; |
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42 | protected DbParameter () |
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43 | { |
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44 | } |
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45 | |||
46 | #endregion // Constructors |
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47 | |||
48 | #region Properties |
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49 | #if !(WINDOWS_PHONE || NETFX_CORE) |
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50 | [Browsable (false)] |
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51 | #endif |
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52 | public abstract DbType DbType { get; set; } |
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53 | |||
54 | [DefaultValue (ParameterDirection.Input)] |
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55 | public abstract ParameterDirection Direction { get; set; } |
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56 | |||
57 | [DefaultValue ("")] |
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58 | public abstract string ParameterName { get; set; } |
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59 | public abstract int Size { get; set; } |
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60 | byte IDbDataParameter.Precision { |
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61 | get { return 0; } |
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62 | set {} |
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63 | } |
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64 | byte IDbDataParameter.Scale { |
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65 | get { return 0; } |
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66 | set {} |
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67 | } |
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68 | |||
69 | [DefaultValue (null)] |
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70 | public abstract object Value { get; set; } |
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71 | #if !(WINDOWS_PHONE || NETFX_CORE) |
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72 | [Browsable (false)] |
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73 | #endif |
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74 | [EditorBrowsable (EditorBrowsableState.Never)] |
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75 | public abstract bool IsNullable { get; set; } |
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76 | |||
77 | [DefaultValue ("")] |
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78 | public abstract string SourceColumn { get; set; } |
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79 | |||
80 | [DefaultValue (false)] |
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81 | [EditorBrowsable (EditorBrowsableState.Advanced)] |
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82 | public abstract bool SourceColumnNullMapping { get; set; } |
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83 | |||
84 | //[DefaultValue (DataRowVersion.Current)] |
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85 | //public abstract DataRowVersion SourceVersion { get; set; } |
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86 | |||
87 | #endregion // Properties |
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88 | |||
89 | #region Methods |
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90 | [EditorBrowsable (EditorBrowsableState.Advanced)] |
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91 | public abstract void ResetDbType (); |
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92 | |||
93 | internal virtual object FrameworkDbType { |
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94 | get {return null;} |
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95 | set {} |
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96 | } |
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97 | |||
98 | internal protected static Dictionary<DbType, Type> DbTypeMapping |
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99 | { |
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100 | get { return dbTypeMapping;} |
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101 | set { dbTypeMapping = value;} |
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102 | } |
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103 | |||
104 | // LAMESPEC: Implementors should populate the dbTypeMapping accordingly |
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105 | internal virtual Type SystemType { |
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106 | get { |
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107 | return (Type) dbTypeMapping [DbType]; |
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108 | } |
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109 | } |
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110 | #endregion // Methods |
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111 | } |
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112 | } |
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113 | |||
114 |