Question

I’m doing a Web application using Spring 3.1.0.RELEASE, JSF 2.x, JPA 2 with Hibernate Provider. The application run on Tomcat 6.X.

I use the bean validation in my entities. Hibernate Validator is the provider, version 4.2.0.Final.

@NotEmpty(message="{site.checklangs}")
    @OrderBy("position ASC")
    @OneToMany(mappedBy = "site", fetch = FetchType.EAGER, cascade= CascadeType.ALL, orphanRemoval=true)
    private List<SiteLanguage> langs;

The @NotEmpty work for persist but not for merge

@Override
    @Transactional
    public Site updateSite(Site site) {
        return entityManager.merge(site);
    }

This doesn’t throw any exceptions when my list is empty. Why ? How fix that ?

Answer 1

Try to call entityManager.flush(); after merge();

See Validation doesn’t work on EntityManager.merge() as reference.