private MySqlField GetFieldMetaData41()
{
MySqlField field = new MySqlField(connection);
stream.OpenPacket();
field.Encoding = encoding;
field.CatalogName = stream.ReadLenString();
field.DatabaseName = stream.ReadLenString();
field.TableName = stream.ReadLenString();
field.RealTableName = stream.ReadLenString();
field.ColumnName = stream.ReadLenString();
field.OriginalColumnName = stream.ReadLenString();
stream.ReadByte();
field.CharacterSetIndex = stream.ReadInteger(2);
field.ColumnLength = stream.ReadInteger(4);
MySqlDbType type = (MySqlDbType)stream.ReadByte();
ColumnFlags colFlags;
if ((Flags & ClientFlags.LONG_FLAG) != 0)
{
colFlags = (ColumnFlags)stream.ReadInteger(2);
}
else
{
colFlags = (ColumnFlags)stream.ReadByte();
}
field.SetTypeAndFlags(type, colFlags);
field.Scale = (byte)stream.ReadByte();
if (stream.HasMoreData)
{
stream.ReadInteger(2); // reserved
}
if (charSets != null && field.CharacterSetIndex != -1)
{
CharacterSet cs = CharSetMap.GetChararcterSet(Version, (string)charSets[field.CharacterSetIndex]);
field.MaxLength = cs.byteCount;
field.Encoding = CharSetMap.GetEncoding(version, (string)charSets[field.CharacterSetIndex]);
}
return(field);
}
private void GetColumnData(MySqlField field)
{
stream.Encoding = Encoding;
packet = stream.ReadPacket();
field.Encoding = Encoding;
field.CatalogName = packet.ReadLenString();
field.DatabaseName = packet.ReadLenString();
field.TableName = packet.ReadLenString();
field.RealTableName = packet.ReadLenString();
field.ColumnName = packet.ReadLenString();
field.OriginalColumnName = packet.ReadLenString();
packet.ReadByte();
field.CharacterSetIndex = packet.ReadInteger(2);
field.ColumnLength = packet.ReadInteger(4);
MySqlDbType type = (MySqlDbType)packet.ReadByte();
ColumnFlags colFlags;
if ((connectionFlags & ClientFlags.LONG_FLAG) != 0)
{
colFlags = (ColumnFlags)packet.ReadInteger(2);
}
else
{
colFlags = (ColumnFlags)packet.ReadByte();
}
field.Scale = (byte)packet.ReadByte();
if (packet.HasMoreData)
{
packet.ReadInteger(2); // reserved
}
if (type == MySqlDbType.Decimal || type == MySqlDbType.NewDecimal)
{
field.Precision = ((colFlags & ColumnFlags.UNSIGNED) != 0) ? (byte)(field.ColumnLength) : (byte)(field.ColumnLength - 1);
if (field.Scale != 0)
{
field.Precision--;
}
}
field.SetTypeAndFlags(type, colFlags);
}
private MySqlField GetFieldMetaData()
{
MySqlField field;
if (version.isAtLeast(4, 1, 0))
{
field = GetFieldMetaData41();
}
else
{
stream.OpenPacket();
field = new MySqlField(connection);
field.Encoding = encoding;
field.TableName = stream.ReadLenString();
field.ColumnName = stream.ReadLenString();
field.ColumnLength = stream.ReadNBytes();
MySqlDbType type = (MySqlDbType)stream.ReadNBytes();
stream.ReadByte();
ColumnFlags colFlags;
if ((Flags & ClientFlags.LONG_FLAG) != 0)
{
colFlags = (ColumnFlags)stream.ReadInteger(2);
}
else
{
colFlags = (ColumnFlags)stream.ReadByte();
}
field.SetTypeAndFlags(type, colFlags);
field.Scale = (byte)stream.ReadByte();
if (!version.isAtLeast(3, 23, 15) && version.isAtLeast(3, 23, 0))
{
field.Scale++;
}
}
return(field);
}
