Adding support for alias when validates the bean.

[garcia-jj]

This pull request closes #826.

As discussed before, I added new methods adding an alias parameter. If alias is not null, the value will be prepended to the category. We need this because using method validation we can discover the parameter name, that is added to category. But using manual validation via Validate.validate we isn't able to discovery this name.

Note: this pull request adds new methods in Validator interface, so can break apps that implements this interface but don't inherits DefaultValidator. So may we can wait a new minor release like 4.2.

[garcia-jj]

Its too evil if I use ternary block here?
category = isNullOrEmpty(alias) ? category : alias + "." + category

[Turini]

I prefer the if :)

[Turini]

sounds ok to me, but just a question: we really can't get (via reflection or
something like that) the validated class name to avoid doing it manually?

[garcia-jj]

we really can't get (via reflection or
something like that) the validated class name to avoid doing it manually?

Yes, we can get the class name. But won't help us. Using the example in the original issue:

public void adicionarForm(Filial filial) {
     validator.validate(filial);
}

Works fine if I try to discovery the parameter name using class name. But if I have this case:

public void adicionarForm(UsuarioFilial usuario) {
     validator.validate(usuario);
}

Using class name will return usuarioFinal, but the parameter name is usuario. So using class name we will force users to use the parameter based on class name.

Or using this another case:

public void adicionarForm(Filial filial) {
     validator.validate(filial.getGerente());
}

The parameter class is Filial, but I trying to validate a nested property gerente.

So using alias will allow users to validating anything without any limitation.

[garcia-jj]

@Turini @lucascs Ok to merge only in 4.2? May better to use a tag to mark this or we can create a draft release and tag this pull request with this draft release?

[Turini]

now I see, thanks @garcia-jj.
Yes, I think we can merge it by adding the info on next changelog.

[garcia-jj]

Thank you.