protected override object CastObjectTo(object value, DataType destType)
{
string str = value.ToString();
var sqlType = destType.SqlType;
switch (sqlType)
{
case (SqlType.Bit):
case (SqlType.Boolean):
return(String.Compare(str, "true", StringComparison.OrdinalIgnoreCase) == 0 ||
String.Compare(str, "1", StringComparison.OrdinalIgnoreCase) == 0);
case (SqlType.TinyInt):
// fall through
case (SqlType.SmallInt):
// fall through
case (SqlType.Integer):
return((Number)ToBigNumber(str).ToInt32());
case (SqlType.BigInt):
return((Number)ToBigNumber(str).ToInt64());
case (SqlType.Float):
return(Number.Parse(Convert.ToString(ToBigNumber(str).ToDouble())));
case (SqlType.Real):
return(ToBigNumber(str));
case (SqlType.Double):
return(Number.Parse(Convert.ToString(ToBigNumber(str).ToDouble())));
case (SqlType.Numeric):
// fall through
case (SqlType.Decimal):
return(ToBigNumber(str));
case (SqlType.Char):
return(new StringObject(CastUtil.PaddedString(str, ((StringType)destType).MaxSize)));
case (SqlType.VarChar):
case (SqlType.LongVarChar):
case (SqlType.String):
return(new StringObject(str));
case (SqlType.Date):
return(ToDate(str));
case (SqlType.Time):
return(ToTime(str));
case (SqlType.TimeStamp):
return(ToTimeStamp(str));
case (SqlType.Blob):
case (SqlType.Binary):
case (SqlType.VarBinary):
case (SqlType.LongVarBinary):
return(new BinaryObject(Encoding.Unicode.GetBytes(str)));
case (SqlType.Null):
return(null);
case (SqlType.Clob):
// TODO: have a context where to get a new CLOB
return(new StringObject(str));
default:
throw new InvalidCastException();
}
}
protected override object CastObjectTo(object value, DataType destType)
{
var n = (Number)value;
var sqlType = destType.SqlType;
switch (sqlType)
{
case (SqlType.Bit):
case (SqlType.Boolean):
return(n.ToBoolean());
case (SqlType.TinyInt):
case (SqlType.SmallInt):
case (SqlType.Integer):
return((Number)n.ToInt32());
case (SqlType.BigInt):
return((Number)n.ToInt64());
case (SqlType.Float):
case (SqlType.Real):
case (SqlType.Double):
double d = n.ToDouble();
NumberState state = NumberState.None;
if (Double.IsNaN(d))
{
state = NumberState.NotANumber;
}
else if (Double.IsPositiveInfinity(d))
{
state = NumberState.PositiveInfinity;
}
else if (Double.IsNegativeInfinity(d))
{
state = NumberState.NegativeInfinity;
}
return(new Number(state, new BigDecimal(d)));
case (SqlType.Numeric):
// fall through
case (SqlType.Decimal):
return(Number.Parse(n.ToString()));
case (SqlType.Char):
return(new StringObject(CastUtil.PaddedString(n.ToString(), ((StringType)destType).MaxSize)));
case (SqlType.VarChar):
case (SqlType.LongVarChar):
return(new StringObject(n.ToString()));
case (SqlType.Date):
case (SqlType.Time):
case (SqlType.TimeStamp):
return(ToDate(n.ToInt64()));
case (SqlType.Blob):
// fall through
case (SqlType.Binary):
// fall through
case (SqlType.VarBinary):
// fall through
case (SqlType.LongVarBinary):
return(new BinaryObject(n.ToByteArray()));
case (SqlType.Null):
return(null);
default:
throw new InvalidCastException();
}
}