public void Open( MySqlConnectionString settings )
{
// connect to one of our specified hosts
try
{
StreamCreator sc = new StreamCreator( settings.Server, settings.Port, settings.PipeName );
stream = sc.GetStream( settings.ConnectionTimeout );
}
catch (Exception ex)
{
throw new MySqlException("Unable to connect to any of the specified MySQL hosts", ex);
}
if (stream == null)
throw new MySqlException("Unable to connect to any of the specified MySQL hosts");
writer = new BufferedStream( stream );
// read off the welcome packet and parse out it's values
Packet packet = ReadPacket();
protocol = packet.ReadByte();
versionString = packet.ReadString();
serverVersion = DBVersion.Parse( versionString );
threadID = (uint)packet.ReadInteger(4);
encryptionSeed = packet.ReadString();
// read in Server capabilities if they are provided
serverCaps = 0;
if (packet.HasMoreData)
serverCaps = (int)packet.ReadInteger(2);
Authenticate( settings.UserId, settings.Password, settings.UseCompression );
// if we are using compression, then we use our CompressedStream class
// to hide the ugliness of managing the compression
if (settings.UseCompression)
{
stream = new CompressedStream( stream );
writer = new BufferedStream( stream );
}
isOpen = true;
}
public void SetValueData( byte[] buf, long index, long len, DBVersion version )
{
if (len == -1)
{
value = DBNull.Value;
buffer = null;
return;
}
buffer = buf;
bufIndex = index;
bufLength = len;
// if it is a blob and binary, then GetBytes is the way to go
if ( IsBlob() && IsBinary() )
{
dbType = DbType.Binary;
value = buffer;
return;
}
string sValue = encoding.GetString( buf, (int)index, (int)len );
switch(colType)
{
case MySqlDbType.Byte:
if (IsUnsigned())
value = Byte.Parse( sValue );
else
value = SByte.Parse( sValue );
break;
case MySqlDbType.Short:
if (IsUnsigned())
value = UInt16.Parse( sValue );
else
value = Int16.Parse( sValue );
break;
case MySqlDbType.Int :
case MySqlDbType.Int24:
if (IsUnsigned())
value = UInt32.Parse( sValue );
else
value = Int32.Parse( sValue );
break;
case MySqlDbType.BigInt:
if (IsUnsigned())
value = UInt64.Parse( sValue );
else
value = Int64.Parse( sValue );
break;
case MySqlDbType.Decimal:
value = Decimal.Parse( sValue , numberFormat );
break;
case MySqlDbType.Float:
value = Convert.ToSingle( sValue, numberFormat );
break;
case MySqlDbType.Double:
value = Convert.ToDouble( sValue, numberFormat );
break;
case MySqlDbType.Year:
value = Int32.Parse( sValue );
break;
case MySqlDbType.Date:
ParseDateValue( "0000-00-00", "yyyy-MM-dd", sValue );
break;
case MySqlDbType.Datetime:
ParseDateValue( "0000-00-00 00:00:00", "yyyy-MM-dd HH:mm:ss", sValue );
break;
case MySqlDbType.Time:
if (sValue.Equals("00:00:00"))
value = DBNull.Value;
else
value = TimeSpan.Parse(sValue);
break;
case MySqlDbType.Timestamp:
// MySql 4.1.0 and later use DateTime format for timestamp
if (version.isAtLeast(4,1,0))
{
ParseDateValue( "0000-00-00 00:00:00", "yyyy-MM-dd HH:mm:ss", sValue );
return;
}
string pattern;
string null_value = "00000000000000";
switch (ColumnLength)
{
case 2: pattern = "yy"; break;
case 4: pattern = "yyMM"; break;
case 6: pattern = "yyMMdd"; break;
case 8: pattern = "yyyyMMdd"; break;
case 10: pattern = "yyMMddHHmm"; break;
case 12: pattern = "yyMMddHHmmss"; break;
case 14:
default: pattern = "yyyyMMddHHmmss"; break;
}
if (ColumnLength > 2 && sValue.Equals( null_value.Substring(0, ColumnLength)))
value = DBNull.Value;
else
value = DateTime.ParseExact( sValue, pattern, new System.Globalization.DateTimeFormatInfo());
break;
case MySqlDbType.String:
case MySqlDbType.VarChar:
case MySqlDbType.Blob:
case MySqlDbType.TinyBlob:
case MySqlDbType.LongBlob:
case MySqlDbType.MediumBlob:
value = sValue;
break;
default:
throw new NotSupportedException();
}
}