@Entity
@Table(name = "REFERENCED_ENTITY")
public class ReferencedEntity {
	@Id
	@GeneratedValue(strategy = GenerationType.AUTO)
	@Column(name = "ID")
	Integer id;

	@Column(name = "foo")
	Integer foo;
}

@Entity
@Table(name = "ENTITY_A")
public class EntityA {
	@Id
	@GeneratedValue(strategy = GenerationType.AUTO)
	@Column(name = "ID")
	Integer id;

	@JoinColumn(name = "ENTITY_B")
	@ManyToOne
	EntityB entityB;
}

@Entity
@Table(name = "ENTITY_B")
public class EntityB {
	@Id
	@GeneratedValue(strategy = GenerationType.AUTO)
	@Column(name = "ID")
	Integer id;

	@Column(name = "REF_NUMBER")
	Integer reference;
}

	@Test
	public void hhhXXXXTest() throws Exception {
		try (Session s = openSession()) {
			Transaction tx = s.beginTransaction();
			ReferencedEntity ref1 = new ReferencedEntity();
			ref1.foo = 1;
			ReferencedEntity ref2 = new ReferencedEntity();
			ref2.foo = 2;
			s.persist(ref1);
			s.persist(ref2);

			EntityA entityA1 = new EntityA();
			EntityB entityB1 = new EntityB();
			entityA1.entityB = entityB1;
			entityB1.reference = ref1.id;
			s.persist(entityB1);
			s.persist(entityA1);

			EntityA entityA2 = new EntityA();
			EntityB entityB2 = new EntityB();
			entityA2.entityB = entityB2;
			entityB2.reference = ref2.id;
			s.persist(entityB2);
			s.persist(entityA2);
			tx.commit();
		}

		try (Session s = openSession()) {
			Query<EntityA> query = s.createQuery("select a from EntityA a join a.entityB ab " //
					+ " where 0 < (select count(*) from ReferencedEntity r where r.foo = 1 and r.id = a.entityB.reference)",
					EntityA.class);
			List<EntityA> actual = query.getResultList();
			assertThat(actual).hasSize(1);
		}
	}

    select
        e1_0.ID,
        e1_0.ENTITY_B 
    from
        ENTITY_A e1_0 
    join
        ENTITY_B e2_0 
            on e2_0.ID=e1_0.ENTITY_B 
    where
        0<(
            select
                count(*) 
            from
                REFERENCED_ENTITY r1_0,
                ENTITY_B e3_0 
            where
                r1_0.foo=1 
                and r1_0.ID=e3_0.REF_NUMBER
        )

        try (Session s = openSession()) {
			Query<EntityA> query = s.createQuery("select a from EntityA a join a.entityB ab " //
					+ " where 0 < (select count(*) from ReferencedEntity r where r.foo = 1 and r.id = ab.reference)",
					EntityA.class);
			List<EntityA> actual = query.getResultList();
			assertThat(actual).hasSize(1);
		}