public override void WriteToStream(Stream outputStream)
{
outputStream.WriteByte((byte)FrontEndMessageCode.Parse);
// message length =
// Int32 self
// name of prepared statement + 1 null string terminator +
// query string + 1 null string terminator
// + Int16
// + Int32 * number of parameters.
Int32 messageLength = 4 + UTF8Encoding.GetByteCount(_prepareName) + 1 + UTF8Encoding.GetByteCount(_queryString) + 1 +
2 + (_parameterIDs.Length * 4);
//Int32 messageLength = 4 + _prepareName.Length + 1 + _queryString.Length + 1 + 2 + (_parameterIDs.Length * 4);
PGUtil.WriteInt32(outputStream, messageLength);
PGUtil.WriteString(_prepareName, outputStream);
PGUtil.WriteString(_queryString, outputStream);
PGUtil.WriteInt16(outputStream, (Int16)_parameterIDs.Length);
for (Int32 i = 0; i < _parameterIDs.Length; i++)
{
PGUtil.WriteInt32(outputStream, _parameterIDs[i]);
}
}
public static void Send(char what, string portal, Stream outputStream)
{
outputStream.WriteByte((byte)FrontEndMessageCode.Describe);
PGUtil.WriteInt32(outputStream, 4 + 1 + UTF8Encoding.GetByteCount(portal) + 1);
outputStream.WriteByte((Byte)what);
PGUtil.WriteString(portal, outputStream);
}
public override void WriteToStream(Stream outputStream)
{
outputStream.WriteByte((byte)FrontEndMessageCode.Execute);
PGUtil.WriteInt32(outputStream, 4 + UTF8Encoding.GetByteCount(_portalName) + 1 + 4);
PGUtil.WriteString(_portalName, outputStream);
PGUtil.WriteInt32(outputStream, _maxRows);
}
public void TestNotify(NpgsqlConnector context)
{
//ZA Hnotifytest CNOTIFY Z
//Qlisten notifytest;notify notifytest;
Stream stm = context.Stream;
string uuidString = "uuid" + Guid.NewGuid().ToString("N");
PGUtil.WriteString("Qlisten " + uuidString + ";notify " + uuidString + ";", stm);
Queue <byte> buffer = new Queue <byte>();
byte[] convertBuffer = new byte[36];
for (; ;)
{
int newByte = stm.ReadByte();
if (newByte == -1)
{
throw new EndOfStreamException();
}
buffer.Enqueue((byte)newByte);
if (buffer.Count > 35)
{
buffer.CopyTo(convertBuffer, 0);
if (ENCODING_UTF8.GetString(convertBuffer) == uuidString)
{
for (; ;)
{
switch (stm.ReadByte())
{
case -1:
throw new EndOfStreamException();
case 'Z':
//context.Query(new NpgsqlCommand("UNLISTEN *", context));
using (NpgsqlCommand cmd = new NpgsqlCommand("UNLISTEN *", context))
{
context.Query(cmd);
}
return;
}
}
}
else
{
buffer.Dequeue();
}
}
}
}
public override void WriteToStream(Stream output_stream)
{
PGUtil.WriteInt32(output_stream,
4 + 4 + 5 + (UTF8Encoding.GetByteCount(user_name) + 1) + 9 +
(UTF8Encoding.GetByteCount(database_name) + 1) + 10 + 4 + 1);
PGUtil.WriteInt32(output_stream, 196608);
// User name.
PGUtil.WriteString("user", output_stream);
// User name.
PGUtil.WriteString(user_name, output_stream);
// Database name.
PGUtil.WriteString("database", output_stream);
// Database name.
PGUtil.WriteString(database_name, output_stream);
// DateStyle.
PGUtil.WriteString("DateStyle", output_stream);
// DateStyle.
PGUtil.WriteString("ISO", output_stream);
output_stream.WriteByte(0);
output_stream.Flush();
}
public override void WriteToStream(Stream outputStream)
{
Int32 messageLength = 4 + UTF8Encoding.GetByteCount(_portalName) + 1 +
UTF8Encoding.GetByteCount(_preparedStatementName) + 1 + 2 + (_parameterFormatCodes.Length * 2) +
2;
// Get size of parameter values.
Int32 i;
if (_parameterValues != null)
{
for (i = 0; i < _parameterValues.Length; i++)
{
messageLength += 4;
if (_parameterValues[i] != null)
{
if (((_parameterFormatCodes.Length == 1) && (_parameterFormatCodes[0] == (Int16)FormatCode.Binary)) ||
((_parameterFormatCodes.Length != 1) && (_parameterFormatCodes[i] == (Int16)FormatCode.Binary)))
{
messageLength += ((Byte[])_parameterValues[i]).Length;
}
else
{
messageLength += UTF8Encoding.GetByteCount((String)_parameterValues[i]);
}
}
}
}
messageLength += 2 + (_resultFormatCodes.Length * 2);
outputStream.WriteByte((byte)FrontEndMessageCode.Bind);
PGUtil.WriteInt32(outputStream, messageLength);
PGUtil.WriteString(_portalName, outputStream);
PGUtil.WriteString(_preparedStatementName, outputStream);
PGUtil.WriteInt16(outputStream, (Int16)_parameterFormatCodes.Length);
for (i = 0; i < _parameterFormatCodes.Length; i++)
{
PGUtil.WriteInt16(outputStream, _parameterFormatCodes[i]);
}
if (_parameterValues != null)
{
PGUtil.WriteInt16(outputStream, (Int16)_parameterValues.Length);
for (i = 0; i < _parameterValues.Length; i++)
{
if (((_parameterFormatCodes.Length == 1) && (_parameterFormatCodes[0] == (Int16)FormatCode.Binary)) ||
((_parameterFormatCodes.Length != 1) && (_parameterFormatCodes[i] == (Int16)FormatCode.Binary)))
{
Byte[] parameterValue = (Byte[])_parameterValues[i];
if (parameterValue == null)
{
PGUtil.WriteInt32(outputStream, -1);
}
else
{
PGUtil.WriteInt32(outputStream, parameterValue.Length);
outputStream.Write(parameterValue, 0, parameterValue.Length);
}
}
else
{
if ((_parameterValues[i] == null))
{
PGUtil.WriteInt32(outputStream, -1);
}
else
{
Byte[] parameterValueBytes = UTF8Encoding.GetBytes((String)_parameterValues[i]);
PGUtil.WriteInt32(outputStream, parameterValueBytes.Length);
outputStream.Write(parameterValueBytes, 0, parameterValueBytes.Length);
}
}
}
}
else
{
PGUtil.WriteInt16(outputStream, 0);
}
PGUtil.WriteInt16(outputStream, (Int16)_resultFormatCodes.Length);
for (i = 0; i < _resultFormatCodes.Length; i++)
{
PGUtil.WriteInt16(outputStream, _resultFormatCodes[i]);
}
}
