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spring-boot hibernate spring-mvc

Answers (1)

March 18, 2026 Score: 1 Rep: 876 Quality: Low Completeness: 50%

The "empty PersistentBag" issue in a @Transactional context might be caused by Persistence Context Pollution (First-Level Cache). Let's try to force Hibernate to "forget" the cached entities so it must use the results of your JOIN FETCH query.

@PersistenceContext
private EntityManager entityManager;
@Transactional
public void yourMethod() {
    // ... previous logic that might have loaded the entity ...
    entityManager.clear(); 
    List results = repository.findAllWithChildren();
}