private static SqlType GetSqlType(ISqlValue value)
{
if (value == null ||
SqlNull.Value == value)
{
throw new ArgumentException();
}
if (value is SqlNumber)
{
var number = (SqlNumber)value;
if (number.CanBeInt32)
{
return(PrimitiveTypes.Integer());
}
if (number.CanBeInt64)
{
return(PrimitiveTypes.BigInt());
}
if (number.Precision == SqlNumericType.FloatPrecision)
{
return(new SqlNumericType(SqlTypeCode.Float, number.Precision, number.Scale));
}
if (number.Precision == SqlNumericType.DoublePrecision)
{
return(new SqlNumericType(SqlTypeCode.Double, number.Precision, number.Scale));
}
if (number.Precision == SqlNumericType.DecimalPrecision)
{
return(new SqlNumericType(SqlTypeCode.Decimal, number.Precision, number.Scale));
}
return(PrimitiveTypes.Numeric(number.Precision, number.Scale));
}
if (value is ISqlString)
{
// TODO: support the long string
var length = ((ISqlString)value).Length;
return(PrimitiveTypes.VarChar((int)length));
}
if (value is SqlBinary)
{
var bin = (SqlBinary)value;
return(PrimitiveTypes.VarBinary((int)bin.Length));
}
if (value is SqlDateTime)
{
return(PrimitiveTypes.TimeStamp());
}
if (value is SqlBoolean)
{
return(PrimitiveTypes.Boolean());
}
if (value is SqlYearToMonth)
{
return(PrimitiveTypes.YearToMonth());
}
if (value is SqlDayToSecond)
{
return(PrimitiveTypes.DayToSecond());
}
if (value is SqlArray)
{
return(PrimitiveTypes.Array(((SqlArray)value).Length));
}
throw new NotSupportedException();
}