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

[Sanne Grinovero]

Using the String value could be a good idea also for double,
not very clean but safe.

2009/3/5 Emmanuel Bernard <emmanuel at hibernate.org>:
> 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.
>>
>
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