public static BigInteger DecodeInt128(byte[] value)
{
if (BitConverter.IsLittleEndian)
{
Array.Reverse(value);
}
return(Int128Helper.GetInt128(value));
}
public void SetValue(byte[] buffer)
{
if (buffer == null || NullFlag == -1)
{
DbValue.SetValue(DBNull.Value);
}
else
{
switch (SqlType)
{
case IscCodes.SQL_TEXT:
case IscCodes.SQL_VARYING:
if (DbDataType == DbDataType.Guid)
{
DbValue.SetValue(TypeDecoder.DecodeGuid(buffer));
}
else
{
if (Charset.IsOctetsCharset)
{
DbValue.SetValue(buffer);
}
else
{
var s = Charset.GetString(buffer, 0, buffer.Length);
if ((Length % Charset.BytesPerCharacter) == 0 &&
s.Length > CharCount)
{
s = s.Substring(0, CharCount);
}
DbValue.SetValue(s);
}
}
break;
case IscCodes.SQL_SHORT:
if (_numericScale < 0)
{
DbValue.SetValue(TypeDecoder.DecodeDecimal(BitConverter.ToInt16(buffer, 0), _numericScale, _dataType));
}
else
{
DbValue.SetValue(BitConverter.ToInt16(buffer, 0));
}
break;
case IscCodes.SQL_LONG:
if (_numericScale < 0)
{
DbValue.SetValue(TypeDecoder.DecodeDecimal(BitConverter.ToInt32(buffer, 0), _numericScale, _dataType));
}
else
{
DbValue.SetValue(BitConverter.ToInt32(buffer, 0));
}
break;
case IscCodes.SQL_FLOAT:
DbValue.SetValue(BitConverter.ToSingle(buffer, 0));
break;
case IscCodes.SQL_DOUBLE:
case IscCodes.SQL_D_FLOAT:
DbValue.SetValue(BitConverter.ToDouble(buffer, 0));
break;
case IscCodes.SQL_QUAD:
case IscCodes.SQL_INT64:
case IscCodes.SQL_BLOB:
case IscCodes.SQL_ARRAY:
if (_numericScale < 0)
{
DbValue.SetValue(TypeDecoder.DecodeDecimal(BitConverter.ToInt64(buffer, 0), _numericScale, _dataType));
}
else
{
DbValue.SetValue(BitConverter.ToInt64(buffer, 0));
}
break;
case IscCodes.SQL_TIMESTAMP:
{
var date = TypeDecoder.DecodeDate(BitConverter.ToInt32(buffer, 0));
var time = TypeDecoder.DecodeTime(BitConverter.ToInt32(buffer, 4));
DbValue.SetValue(date.Add(time));
break;
}
case IscCodes.SQL_TYPE_TIME:
DbValue.SetValue(TypeDecoder.DecodeTime(BitConverter.ToInt32(buffer, 0)));
break;
case IscCodes.SQL_TYPE_DATE:
DbValue.SetValue(TypeDecoder.DecodeDate(BitConverter.ToInt32(buffer, 0)));
break;
case IscCodes.SQL_BOOLEAN:
DbValue.SetValue(TypeDecoder.DecodeBoolean(buffer));
break;
case IscCodes.SQL_TIMESTAMP_TZ:
{
var date = TypeDecoder.DecodeDate(BitConverter.ToInt32(buffer, 0));
var time = TypeDecoder.DecodeTime(BitConverter.ToInt32(buffer, 4));
var tzId = BitConverter.ToUInt16(buffer, 8);
var dt = DateTime.SpecifyKind(date.Add(time), DateTimeKind.Utc);
DbValue.SetValue(TypeHelper.CreateZonedDateTime(dt, tzId, null));
break;
}
case IscCodes.SQL_TIMESTAMP_TZ_EX:
{
var date = TypeDecoder.DecodeDate(BitConverter.ToInt32(buffer, 0));
var time = TypeDecoder.DecodeTime(BitConverter.ToInt32(buffer, 4));
var tzId = BitConverter.ToUInt16(buffer, 8);
var offset = BitConverter.ToInt16(buffer, 10);
var dt = DateTime.SpecifyKind(date.Add(time), DateTimeKind.Utc);
DbValue.SetValue(TypeHelper.CreateZonedDateTime(dt, tzId, offset));
break;
}
case IscCodes.SQL_TIME_TZ:
{
var time = TypeDecoder.DecodeTime(BitConverter.ToInt32(buffer, 0));
var tzId = BitConverter.ToUInt16(buffer, 4);
DbValue.SetValue(TypeHelper.CreateZonedTime(time, tzId, null));
break;
}
case IscCodes.SQL_TIME_TZ_EX:
{
var time = TypeDecoder.DecodeTime(BitConverter.ToInt32(buffer, 0));
var tzId = BitConverter.ToUInt16(buffer, 4);
var offset = BitConverter.ToInt16(buffer, 6);
DbValue.SetValue(TypeHelper.CreateZonedTime(time, tzId, offset));
break;
}
case IscCodes.SQL_DEC16:
DbValue.SetValue(DecimalCodec.DecFloat16.ParseBytes(buffer));
break;
case IscCodes.SQL_DEC34:
DbValue.SetValue(DecimalCodec.DecFloat34.ParseBytes(buffer));
break;
case IscCodes.SQL_INT128:
if (_numericScale < 0)
{
DbValue.SetValue(TypeDecoder.DecodeDecimal(Int128Helper.GetInt128(buffer), _numericScale, _dataType));
}
else
{
DbValue.SetValue(Int128Helper.GetInt128(buffer));
}
break;
default:
throw TypeHelper.InvalidDataType(SqlType);
}
}
}