1 // Npgsql.NpgsqlQuery.cs
4 // Dave Joyner <d4ljoyn@yahoo.com>
6 // Copyright (C) 2002 The Npgsql Development Team
7 // npgsql-general@gborg.postgresql.org
8 // http://gborg.postgresql.org/project/npgsql/projdisplay.php
10 // This library is free software; you can redistribute it and/or
11 // modify it under the terms of the GNU Lesser General Public
12 // License as published by the Free Software Foundation; either
13 // version 2.1 of the License, or (at your option) any later version.
15 // This library is distributed in the hope that it will be useful,
16 // but WITHOUT ANY WARRANTY; without even the implied warranty of
17 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 // Lesser General Public License for more details.
20 // You should have received a copy of the GNU Lesser General Public
21 // License along with this library; if not, write to the Free Software
22 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
28 using System.Net.Sockets;
33 /// Summary description for NpgsqlQuery
35 internal sealed class NpgsqlQuery
37 private String _commandText;
38 private Int32 _protocolVersion;
40 public NpgsqlQuery(String commandText, Int32 protocolVersion)
42 _commandText = commandText;
43 _protocolVersion = protocolVersion;
46 public void WriteToStream( Stream outputStream, Encoding encoding )
48 //NpgsqlEventLog.LogMsg( this.ToString() + _commandText, LogLevel.Debug );
51 // Send the query to server.
52 // Write the byte 'Q' to identify a query message.
53 outputStream.WriteByte((Byte)'Q');
56 if (_protocolVersion == ProtocolVersion.Version3)
57 // Write message length. Int32 + string length + null terminator.
58 PGUtil.WriteInt32(outputStream, 4 + encoding.GetByteCount(_commandText) + 1);
63 // Write the query. In this case it is the CommandText text.
64 // It is a string terminated by a C NULL character.
66 PGUtil.WriteString(_commandText, outputStream, encoding);