[hibernate-dev] [Bean Validation] @Max / @Min as double instead of long

[Emmanuel Bernard]

I mean we could but we would need to rely on the string representation

@interface Max {
   String value()
}

@Max("12.5")
double someNumber;


On  Mar 4, 2009, at 19:17, Emmanuel Bernard wrote:

> Unfortunately, you can't support Big* as they are not expressible in  
> annotations
>
> @interface Max {
>  BigDecimal value();
> }
>
> does not compile.
>
> On  Mar 4, 2009, at 19:14, Elias Ross wrote:
>
>> On Wed, Mar 4, 2009 at 3:49 PM, Emmanuel Bernard <emmanuel at hibernate.org 
>> > wrote:
>>> [Follow up with Sebastian]
>>>
>>> Well good point and frankly I do not know :)
>>> 1. do we support float and double for @Min / @Max?
>>> 2. if 1 is yes, I'd be inclined to say the value should be double  
>>> but that's
>>> not fully automatic.
>>
>> How would you go about supporting @Max / @Min for  
>> java.math.BigDecimal
>> ? These would be more useful, since think a lot of this sort of
>> validation is intended to fulfill business rules and business math
>> requires exact (not floating point) math.
>>
>> And even in situations you use floating point math, the input and
>> state should be probably a BigDecimal value but internally
>> calculations could be done (for sake of expedience) using a double
>> conversion.
>>
>> I would probably create a separate @MaxDouble and @MinDouble
>> annotation, if at all, but I wouldn't feel easy suggesting users  
>> build
>> constraints using floating point comparisons.
>