Gunnar Morling commented on

BVAL-340

Denote method parameter constraints at declaration site (vs. at definition site)

Such feature would be useful for generic constraints like @ScriptAssert and a generic @EqualsPasswords

Yes, exactly.

We could have constraints annotated with both @CrossParameterConstraint and @Constraint.

Would we even need @CrossParameterConstraint? If a constraint author wants to support a constraint on cross-parameters, she would just have to provide a validator for Object[]. In other words, cross-parameters (an object array) would just be another supported type for a validator. If a constraint author doesn't not want a constraint to be applicable for cross-parameters, she would just omit the validationAppliesTo attribute (which we'd have to support for backwards-compatability reasons anyways).

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