mcs/class/Npgsql/Npgsql/NpgsqlConnectedState.cs

   1 // Npgsql.NpgsqlConnectedState.cs
   2 //
   3 // Author:
   4 //      Dave Joyner <d4ljoyn@yahoo.com>
   5 //
   6 //      Copyright (C) 2002 The Npgsql Development Team
   7 //      npgsql-general@gborg.postgresql.org
   8 //      http://gborg.postgresql.org/project/npgsql/projdisplay.php
   9 //
  10 //
  11 // This library is free software; you can redistribute it and/or
  12 // modify it under the terms of the GNU Lesser General Public
  13 // License as published by the Free Software Foundation; either
  14 // version 2.1 of the License, or (at your option) any later version.
  15 //
  16 // This library is distributed in the hope that it will be useful,
  17 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  18 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  19 // Lesser General Public License for more details.
  20 //
  21 // You should have received a copy of the GNU Lesser General Public
  22 // License along with this library; if not, write to the Free Software
  23 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  24
  25 using System;
  26 using System.IO;
  27
  28
  29 namespace Npgsql
  30 {
  31     internal sealed class NpgsqlConnectedState : NpgsqlState
  32     {
  33
  34         private static NpgsqlConnectedState _instance = null;
  35
  36         private NpgsqlConnectedState()
  37         {}
  38         public static NpgsqlConnectedState Instance
  39         {
  40             get
  41             {
  42                 if ( _instance == null )
  43                 {
  44                     _instance = new NpgsqlConnectedState();
  45                 }
  46                 return _instance;
  47             }
  48         }
  49         public override void Startup(NpgsqlConnection context)
  50         {
  51             if (context.BackendProtocolVersion == ProtocolVersion.Version3)
  52             {
  53
  54                 NpgsqlStartupPacket startupPacket  = new NpgsqlStartupPacket(296, //Not used.
  55                                                      3,
  56                                                      0,
  57                                                      context.DatabaseName,
  58                                                      context.UserName,
  59                                                      "",
  60                                                      "",
  61                                                      "");
  62
  63                 startupPacket.WriteToStream( new BufferedStream(context.Stream), context.Encoding );
  64                 ProcessBackendResponses( context );
  65             }
  66             else if (context.BackendProtocolVersion == ProtocolVersion.Version2)
  67             {
  68
  69                 NpgsqlStartupPacket startupPacket  = new NpgsqlStartupPacket(296,
  70                                                      2,
  71                                                      0,
  72                                                      context.DatabaseName,
  73                                                      context.UserName,
  74                                                      "",
  75                                                      "",
  76                                                      "");
  77
  78                 startupPacket.WriteToStream( new BufferedStream(context.Stream), context.Encoding );
  79                 ProcessBackendResponses( context );
  80
  81
  82             }
  83
  84         }
  85
  86     }
  87 }