I was also thinking about a generic class level @CrossValidation
constraint. I think Emmanuel and I
are thinking about the same thing here:
@CrossValidations({
@CrossValidation(forGroup=BankAccount.class),
@CrossValidation(forGroup=ContactDetails.class)
})
public class BankAccountNumber {
@ExactlyOneNull(groups=BankAccount.class)
public String getIBAN() {
return IBAN;
}
@ExactlyOneNull(groups=BankAccount.class)
public String getAccount() {
return account;
}
@ExactlyOneNull(groups=ContactDetails.class)
public String getHomeNumber() {
return homeNumber;
}
@ExactlyOneNull(groups=ContactDetails.class)
public String getWorkNumber() {
return workNumber;
}
}
Using groups (or maybe payloads!?) you can have multiple cross validations
of the same type within one entity.
--Hardy
On Mon, 18 Oct 2010 09:48:16 +0200, Emmanuel Bernard
<emman...@hibernate.org> wrote:
>
> On 16 oct. 2010, at 10:56, Dag Hovland wrote:
>
>> On 15/10/10 13:33, Emmanuel Bernard wrote:
>> (...)
>>> That being said, I wonder whether you can write your approach atop a
>>> generic class-level constraint @CrossValidation that would look for
>>> the properties annotations and behave as expected. That would be a
>>> nice way to offer both world to the users. You will need to "group"
>>> cross field constraints though: as I see it on the paper, you can only
>>> have one group of cross level constraint for a given constraint type
>>> per class.
>>
>> I do not really understand this. Can you give an example?
>
> class BrokenModel {
> @AtLeastOneNotNullAmongst(Group1.class)
> A getA() { ... };
> @AtLeastOneNotNullAmongst(Group1.class)
> @AtLeastOneNotNullAmongst(Group2.class)
> B getB() { ... };
> @AtLeastOneNotNullAmongst(Group2.class)
> C getC() { ... };
> }
>
> A or B must be not null and B or C must be not null.
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