Spring Data, LazyInitializationException which pattern to use?

Question

Java

There is a certain Entity class Operation, containing a list of stages objects, marked with the @ManyToMany annotation.
For this class, a repository interface was created inherited from JpaRepository without any additional methods.

public interface OperationTypeRepository extends JpaRepository<OperationType,Long> {
}

There is a CRUD service that implements some business logic using this repository. The read method is implemented elementary

public OperationType read(Long id) {
        return repository.getOne(id);
 }

And finally, there is a controller that uses this service.

OperationType otFromBase = typeCrudService.read(ot1.getId());
otFromBase.getOperStages();

When I try to access stages through a getter, it doesn't matter (FetchType=LAZY or EAGER), I get a LazyInitializationException error. I generally understand what's going on. The question is how to avoid it. There must be some kind of pattern that allows you to resolve this situation.

Answer 1

The good, the bad and the ugly (OSIV pattern) :)