@Entity(name = "entitya")
	public static class EntityA {

		@Id
		private Integer id;

		@OneToOne
		private EntityB entityB1;

		@OneToOne
		private EntityB entityB2;

		// ... Getters, setters ...
	}

	@Entity(name = "entityb")
	public static class EntityB {
		@Id
		private Integer id;

		@OneToOne(mappedBy = "entityB1", fetch = FetchType.LAZY)
		private EntityA entityA1;

		@OneToOne(mappedBy = "entityB2", fetch = FetchType.LAZY)
		private EntityA entityA2;
		
		// ... Getters, setters ...
	}

select e2_0.id,e3_0.id,e4_0.id,e5_0.id,e6_0.id,e7_0.id
from entityb e1_0
left join entitya e2_0 on e1_0.id=e2_0.entityB1_id
left join entityb e3_0 on e3_0.id=e2_0.entityB1_id
left join entityb e4_0 on e4_0.id=e2_0.entityB2_id
left join entitya e5_0 on e1_0.id=e5_0.entityB2_id
left join entityb e6_0 on e6_0.id=e5_0.entityB1_id
left join entityb e7_0 on e7_0.id=e5_0.entityB2_id
where e1_0.id=?