add an AnnotatedNormalizer service

[lsmith77]

Here is an example of a simple controller that can cause a validation error:
https://github.com/liip/HelloBundle/blob/master/Controller/HelloController.php#L69

In the case of a validation error a ConstraintViolationList instance is passed to the view layer which then needs to be normalized using the ValidatorConstraintViolationListNormalizer. However since ConstraintViolationList is 3rd party code I cannot add the annotations.

What do you propose here? Wrap the ConstraintViolationList into an annotated class?

Note in the FOSRestBundle I handle registering normalizers via the config for specific classes and for the above case I register a normalizer by default:
https://github.com/FriendsOfSymfony/RestBundle/blob/master/DependencyInjection/FOSRestExtension.php#L42

Also the FOSUserBundle Serializer has support for a fallback normalizer, I guess this is really what I would want to use here. Aka I would want to register the AnnotatedNormalizer as a fallback normalizer, but for this configureSerializer() doesnt really work well. What I would rather want is for the SerializerBundle to offer an AnnotatedNormalizer service I could reference that is setup with the naming/exclusion strategy the user has configured.

[schmittjoh]

The "annotations" branch contains a heavy refactoring. Can you check if it solves the issues you describe here?

[lsmith77]

fixed indeed