AccessRightFacade.java

package fi.insomnia.bortal.facade;

import javax.ejb.LocalBean;
import javax.ejb.Stateless;
import javax.persistence.EntityManager;
import javax.persistence.PersistenceContext;
import javax.persistence.TypedQuery;

import fi.insomnia.bortal.model.AccessRight;

@Stateless
@LocalBean
public class AccessRightFacade extends IntegerPkGenericFacade<AccessRight> {

    @PersistenceContext
    private EntityManager em;

    public AccessRightFacade() {
        super(AccessRight.class);
    }

    protected EntityManager getEm() {
        return em;
    }

    public AccessRight findOrCreateByName(String target) {

        // Fetch access right by name
        TypedQuery<AccessRight> q = em.createNamedQuery("AccessRight.findByName", AccessRight.class);
        q.setParameter("name", target);
        AccessRight right = q.getSingleResult();

        // Might not exist yet -> create
        if (right == null) {
            right = new AccessRight();
            em.persist(right);
        }

        return right;
    }
}