mcs/class/Npgsql/Npgsql/NpgsqlDescribe.cs

   1 // created on 1/7/2003 at 20:48
   2
   3 // Npgsql.NpgsqlDescribe.cs
   4 //
   5 // Author:
   6 //      Francisco Jr. (fxjrlists@yahoo.com.br)
   7 //
   8 //      Copyright (C) 2002 The Npgsql Development Team
   9 //      npgsql-general@gborg.postgresql.org
  10 //      http://gborg.postgresql.org/project/npgsql/projdisplay.php
  11 //
  12 // This library is free software; you can redistribute it and/or
  13 // modify it under the terms of the GNU Lesser General Public
  14 // License as published by the Free Software Foundation; either
  15 // version 2.1 of the License, or (at your option) any later version.
  16 //
  17 // This library is distributed in the hope that it will be useful,
  18 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  19 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  20 // Lesser General Public License for more details.
  21 //
  22 // You should have received a copy of the GNU Lesser General Public
  23 // License along with this library; if not, write to the Free Software
  24 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  25
  26 using System;
  27 using System.IO;
  28 using System.Text;
  29
  30 namespace Npgsql
  31 {
  32
  33     /// <summary>
  34     /// This class represents the Parse message sent to PostgreSQL
  35     /// server.
  36     /// </summary>
  37     ///
  38     internal sealed class NpgsqlDescribe
  39     {
  40         // Logging related values
  41         private static readonly String CLASSNAME = "NpgsqlDescribe";
  42
  43         private Char _whatToDescribe;
  44         private String _portalName;
  45
  46         public NpgsqlDescribe(Char whatToDescribe, String portalName)
  47         {
  48             _whatToDescribe = whatToDescribe;
  49             _portalName = portalName;
  50
  51         }
  52
  53         public void WriteToStream(Stream outputStream, Encoding encoding)
  54         {
  55             outputStream.WriteByte((Byte)'D');
  56
  57             PGUtil.WriteInt32(outputStream, 4 +
  58                               1 +
  59                               encoding.GetByteCount(_portalName) + 1);
  60
  61             outputStream.WriteByte((Byte)_whatToDescribe);
  62             PGUtil.WriteString(_portalName, outputStream, encoding);
  63
  64
  65         }
  66
  67     }
  68 }
  69