Provide ability to handle 'after' Http findOne event [DATAREST-836]

Pavel varchenko opened DATAREST-836 and commented

At the moment to read item resource by ID spring data rest uses JPA repository 'findOne' method. There are some different use cases to use this method:

1. Custom jackson deserializer (via RepositoryInvoker.invokeFindOne())
2. Spring data rest RepositoryEntityController (via RepositoryInvoker.invokeFindOne())
3. Another application business logic (via JPA repository)

In some use cases we need

1. To secure findOne
2. To count usage of findOne from HTTP requests

Provide security via findOne in some cases make different troubles (deserialization an entity to object by ID) and may be unnecessary.

In this issue I suggest to implement HandleAfterFindOne annotation and AfterFindOneEvent event and publish them in RepositoryEntityController. So we could use annotated handlers

At the moment I'm working on pull request of this issue implementation and it will be great if you can say if this feature could be part of spring data rest or not =)

No further details from DATAREST-836