Re: [Springframework-rcp-dev] Best way for a special Constraint...

[Geoffrey De S. <ge0...@gm...>]

Maybe it's better to disable (and clear) the field if the other property 
is true?

With kind regards,
Geoffrey De Smet

Jan Hoskens schreef:
> Have you tried something like:
> 
> constraints.ifTrue(constraints.eq("X", ValueY),
> constraints.not(constraints.present(Y)));
> 
> Maybe we should indeed add an AbsentIfTrue as an opposite of the
> RequiredIfTrue.
> 
> Kind Regards,
> Jan
> 
> 
> On Fri, 2008-02-08 at 16:44 +0000, Benoit Xhenseval wrote:
>> Hi All,
>>
>>  
>>
>> It is Friday afternoon and my brain is slowing down…  What would be
>> the best way to say:
>>
>>  
>>
>> If Property X == ‘VAL_1’ then Property Y must be ABSENT/null
>>
>> If Property X == ‘VAL_1’ then Property Z must be ABSENT/null
>>
>> If Property X == ‘VAL_2’ then Property Y is required
>>
>> If Property X == ‘VAL_3’ then Property Z is required
>>
>>  
>>
>> The last 2 are easy:
>>
>> add(new RequiredIfTrue("Y", eq("X", “VAL_2”)));
>>
>> add(new RequiredIfTrue("Z", eq("X", “VAL_3”)));
>>
>>  
>>
>> but something like AbsentIfTrue would be useful…
>>
>> But how would you check for absence? Not(present(“Y”)) ?
>>
>>  
>>
>> Second question, is it possible to put a rule with a given regular
>> expression (like ISIN which are 2 char followed by 9 numerics).
>>
>>  
>>
>> Many thanks,
>>
>>  
>>
>> Benoit
>>
>>  
>>
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