HV-1494 Hibernate Validator specific @NotEmpty used on return type throws an exception

[marko-bekhta]

• https://hibernate.atlassian.net/browse/HV-1494

I found that only NotEmpty Range and TituloEleitoral were the composite constraints without validators. So I've added SupportedValidationTarget for them.

[gsmet]

@marko-bekhta you removed the rest of your changes? How does it work for custom composite constraints?

Note that we can require that users define SupportedValidationTarget on them.

What you did in this PR is what Gunnar originally had in mind but I'm curious on why you removed the rest of your changes?

[marko-bekhta]

@gsmet well they are in that other branch (in the closed PR, I left them there if you'd like to check those, as otherwise they wouldn't be visible if I update the commit and force push the changes right?)
And this one is a clean one. With just what Gunnar was suggesting.

I just thought that it was an over-complicated solution (because I didn't know about SupportedValidationTarget). For the custom ones - there's one in the test. If SupportedValidationTarget is placed on it - all works fine.

So I thought if there's an existing solution to the problem - it'll be better to use it rather than make the ConstraintDescriptorImpl#determineConstraintType more complicated ...

[gsmet]

@marko-bekhta sure. And this one will be easily backportable too. Thanks for that!

[gunnarmorling]

That looks good +1. We can still go for the more automated route in a next release, only see my comment about combining the annotation tree traversals if possible in the closed PR.

[gsmet]

Merged with a few minor changes I included in your commit.

[gsmet]

Backported to 5.4 and 5.3.