public byte[] GetBytes()
{
if (IsDBNull())
{
int length = _field.Length;
if (Field.SqlType == IscCodes.SQL_VARYING)
{
// Add two bytes more for store value length
length += 2;
}
return(new byte[length]);
}
switch (Field.DbDataType)
{
case DbDataType.Char:
{
var buffer = new byte[Field.Length];
byte[] bytes;
if (Field.Charset.IsOctetsCharset)
{
bytes = GetBinary();
}
else
{
var svalue = GetString();
if ((Field.Length % Field.Charset.BytesPerCharacter) == 0 &&
svalue.Length > Field.CharCount)
{
throw IscException.ForErrorCodes(new[] { IscCodes.isc_arith_except, IscCodes.isc_string_truncation });
}
bytes = Field.Charset.GetBytes(svalue);
}
for (var i = 0; i < buffer.Length; i++)
{
buffer[i] = (byte)' ';
}
Buffer.BlockCopy(bytes, 0, buffer, 0, bytes.Length);
return(buffer);
}
case DbDataType.VarChar:
{
var buffer = new byte[Field.Length + 2];
byte[] bytes;
if (Field.Charset.IsOctetsCharset)
{
bytes = GetBinary();
}
else
{
var svalue = GetString();
if ((Field.Length % Field.Charset.BytesPerCharacter) == 0 &&
svalue.Length > Field.CharCount)
{
throw IscException.ForErrorCodes(new[] { IscCodes.isc_arith_except, IscCodes.isc_string_truncation });
}
bytes = Field.Charset.GetBytes(svalue);
}
Buffer.BlockCopy(BitConverter.GetBytes((short)bytes.Length), 0, buffer, 0, 2);
Buffer.BlockCopy(bytes, 0, buffer, 2, bytes.Length);
return(buffer);
}
case DbDataType.Numeric:
case DbDataType.Decimal:
return(GetNumericBytes());
case DbDataType.SmallInt:
return(BitConverter.GetBytes(GetInt16()));
case DbDataType.Integer:
return(BitConverter.GetBytes(GetInt32()));
case DbDataType.Array:
case DbDataType.Binary:
case DbDataType.Text:
case DbDataType.BigInt:
return(BitConverter.GetBytes(GetInt64()));
case DbDataType.Float:
return(BitConverter.GetBytes(GetFloat()));
case DbDataType.Double:
return(BitConverter.GetBytes(GetDouble()));
case DbDataType.Date:
return(BitConverter.GetBytes(TypeEncoder.EncodeDate(GetDateTime())));
case DbDataType.Time:
return(BitConverter.GetBytes(GetTime()));
case DbDataType.TimeStamp:
var dt = GetDateTime();
var date = BitConverter.GetBytes(TypeEncoder.EncodeDate(dt));
var time = BitConverter.GetBytes(TypeEncoder.EncodeTime(TypeHelper.DateTimeToTimeSpan(dt)));
var result = new byte[8];
Buffer.BlockCopy(date, 0, result, 0, date.Length);
Buffer.BlockCopy(time, 0, result, 4, time.Length);
return(result);
case DbDataType.Guid:
return(GetGuid().ToByteArray());
case DbDataType.Boolean:
return(BitConverter.GetBytes(GetBoolean()));
default:
throw TypeHelper.InvalidDataType((int)Field.DbDataType);
}
}
public static IscException ForIOException(IOException exception)
{
return(IscException.ForErrorCodes(new[] { IscCodes.isc_net_write_err, IscCodes.isc_net_read_err }, exception));
}