mcs/class/System.Data/System.Data.Odbc/OdbcError.cs

   1 //
   2 // System.Data.Odbc.OdbcError
   3 //
   4 // Author:
   5 //   Brian Ritchie (brianlritchie@hotmail.com)
   6 //
   7 // Copyright (C) Brian Ritchie, 2002
   8 //
   9
  10 //
  11 // Copyright (C) 2004 Novell, Inc (http://www.novell.com)
  12 //
  13 // Permission is hereby granted, free of charge, to any person obtaining
  14 // a copy of this software and associated documentation files (the
  15 // "Software"), to deal in the Software without restriction, including
  16 // without limitation the rights to use, copy, modify, merge, publish,
  17 // distribute, sublicense, and/or sell copies of the Software, and to
  18 // permit persons to whom the Software is furnished to do so, subject to
  19 // the following conditions:
  20 //
  21 // The above copyright notice and this permission notice shall be
  22 // included in all copies or substantial portions of the Software.
  23 //
  24 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  25 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  26 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  27 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  28 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  29 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  30 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  31 //
  32
  33 using System.Collections;
  34 using System.ComponentModel;
  35 using System.Data;
  36 using System.Data.Common;
  37
  38 namespace System.Data.Odbc
  39 {
  40         [Serializable]
  41         public sealed class OdbcError
  42         {
  43                 string _message;
  44                 string _source;
  45                 string _state;
  46                 int _nativeerror;
  47
  48                 #region Constructors
  49
  50                 internal OdbcError(string Source)
  51                 {
  52                         _nativeerror = 1;
  53                         _source = Source;
  54                         _message = "Error in " + _source;
  55                         _state = "";
  56                 }
  57
  58                 internal OdbcError(string Source, OdbcHandleType HandleType, IntPtr Handle)
  59                 {
  60                         short buflen=256,txtlen=0;
  61                         OdbcReturn ret=OdbcReturn.Success;
  62                         byte[] buf_MsgText=new byte[buflen];
  63                         byte[] buf_SqlState=new byte[buflen];
  64                         bool NeedsDecode=true;
  65                         _source = Source;
  66                         switch (HandleType)
  67                         {
  68                                 case OdbcHandleType.Dbc:
  69                                         ret=libodbc.SQLError(IntPtr.Zero,Handle,IntPtr.Zero, buf_SqlState,
  70                                                 ref _nativeerror, buf_MsgText, buflen, ref txtlen);
  71                                         break;
  72                                 case OdbcHandleType.Stmt:
  73                                         ret=libodbc.SQLError(IntPtr.Zero,IntPtr.Zero,Handle, buf_SqlState,
  74                                                 ref _nativeerror, buf_MsgText, buflen, ref txtlen);
  75                                         break;
  76                                 case OdbcHandleType.Env:
  77                                         ret=libodbc.SQLError(Handle,IntPtr.Zero,IntPtr.Zero, buf_SqlState,
  78                                                 ref _nativeerror, buf_MsgText, buflen, ref txtlen);
  79                                         break;
  80                                 default:
  81                                         _nativeerror = 1;
  82                                         _source = Source;
  83                                         _message = "Error in " + _source;
  84                                         _state = "";
  85                                         NeedsDecode=false;
  86                                         break;
  87                         }
  88                         if (NeedsDecode)
  89                         {
  90                                 if (ret!=OdbcReturn.Success)
  91                                 {
  92                                         _nativeerror = 1;
  93                                         _source = Source;
  94                                         _message = "Unable to retreive error information from ODBC driver manager";
  95                                         _state = "";
  96                                 }
  97                                 else
  98                                 {
  99                                         _state = System.Text.Encoding.Default.GetString (buf_SqlState).Replace ((char) 0, ' ').Trim ();
 100                                         _message = System.Text.Encoding.Default.GetString (buf_MsgText).Replace ((char) 0, ' ').Trim ();
 101                                 }
 102                         }
 103                 }
 104
 105                 #endregion // Constructors
 106
 107                 #region Properties
 108
 109                 public string Message
 110                 {
 111                         get
 112                         {
 113                                 return _message;
 114                         }
 115                 }
 116
 117                 public int NativeError
 118                 {
 119                         get
 120                         {
 121                                 return _nativeerror;
 122                         }
 123                 }
 124
 125                 public string Source
 126                 {
 127                         get
 128                         {
 129                                 return _source;
 130                         }
 131                 }
 132
 133                 public string SQLState
 134                 {
 135                         get
 136                         {
 137                                 return _state;
 138                         }
 139                 }
 140
 141                 #endregion // Properties
 142
 143                 #region methods
 144
 145                 public override string ToString ()
 146                 {
 147                         return Message;
 148                 }
 149
 150                 #endregion
 151
 152         }
 153
 154 }