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1 using System;
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2 using System.Runtime.Serialization;
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3
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4 using BLToolkit.Data.DataProvider;
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5
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6 namespace BLToolkit.Data
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7 {
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8 /// <summary>
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9 /// Defines the base class for the namespace exceptions.
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10 /// </summary>
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11 /// <remarks>
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12 /// This class is the base class for exceptions that may occur during
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13 /// execution of the namespace members.
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14 /// </remarks>
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15 [Serializable]
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16 public class DataException : System.Data.DataException
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17 {
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18 /// <summary>
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19 /// Initializes a new instance of the <see cref="DataException"/> class.
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20 /// </summary>
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21 /// <remarks>
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22 /// This constructor initializes the <see cref="Exception.Message"/>
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23 /// property of the new instance
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24 /// to a system-supplied message that describes the error,
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25 /// such as "BLToolkit Data error has occurred."
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26 /// </remarks>
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27 public DataException()
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28 : base("A BLToolkit Data error has occurred.")
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29 {
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30 }
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31
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32 /// <summary>
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33 /// Initializes a new instance of the <see cref="DataException"/> class
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34 /// with the specified error message.
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35 /// </summary>
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36 /// <param name="message">The message to display to the client when the
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37 /// exception is thrown.</param>
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38 /// <seealso cref="Exception.Message"/>
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39 public DataException(string message)
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40 : base(message)
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41 {
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42 }
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43
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44 /// <summary>
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45 /// Initializes a new instance of the <see cref="DataException"/> class
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46 /// with the specified error message and InnerException property.
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47 /// </summary>
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48 /// <param name="message">The message to display to the client when the
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49 /// exception is thrown.</param>
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50 /// <param name="innerException">The InnerException, if any, that threw
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51 /// the current exception.</param>
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52 /// <seealso cref="Exception.Message"/>
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53 /// <seealso cref="Exception.InnerException"/>
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54 public DataException(string message, Exception innerException)
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55 : base(message, innerException)
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56 {
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57 }
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58
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59 /// <summary>
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60 /// Initializes a new instance of the <see cref="DataException"/> class
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61 /// with the InnerException property.
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62 /// </summary>
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63 /// <param name="innerException">The InnerException, if any, that threw
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64 /// the current exception.</param>
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65 /// <seealso cref="Exception.InnerException"/>
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66 public DataException(Exception innerException)
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67 : base(innerException.Message, innerException)
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68 {
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69 }
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70
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71 /// <summary>
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72 /// Initializes a new instance of the <see cref="DataException"/> class
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73 /// with serialized data.
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74 /// </summary>
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75 /// <param name="info">The object that holds the serialized object data.</param>
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76 /// <param name="context">The contextual information about the source or
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77 /// destination.</param>
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78 /// <remarks>This constructor is called during deserialization to
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79 /// reconstitute the exception object transmitted over a stream.</remarks>
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80 protected DataException(SerializationInfo info, StreamingContext context)
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81 : base(info, context)
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82 {
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83 }
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84
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85 #region Internal
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86
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87 private readonly DbManager _dbManager;
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88
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89 static string GetMessage(DbManager dbManager, Exception innerException)
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90 {
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91 var obj = dbManager.DataProvider.Convert(
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92 innerException, ConvertType.ExceptionToErrorMessage);
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93
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94 return obj is Exception ? ((Exception)obj).Message : obj.ToString();
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95 }
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96
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97 internal DataException(DbManager dbManager, Exception innerException)
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98 : this(GetMessage(dbManager, innerException), innerException)
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99 {
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100 _dbManager = dbManager;
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101 }
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102
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103 #endregion
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104
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105 #region Public Properties
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106
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107 /// <summary>
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108 /// Gets a number that identifies the type of error.
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109 /// </summary>
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110 public int? Number
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111 {
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112 get
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113 {
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114 var innerException = InnerException as DataException;
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115 if (innerException != null)
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116 return innerException.Number;
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117 if (_dbManager == null) return null;
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118 return _dbManager.DataProvider.Convert(InnerException, ConvertType.ExceptionToErrorNumber) as int?;
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119 }
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120 }
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121
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122 public DataExceptionType DataExceptionType
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123 {
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124 get
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125 {
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126 if (_dbManager == null || Number == null)
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127 return DataExceptionType.Undefined;
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128 return _dbManager.DataProvider.ConvertErrorNumberToDataExceptionType(Number.Value);
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129 }
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130 }
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131
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132 #endregion
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133 }
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134 }
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135
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