@Table("pet")
public class Pet {
	@Id
	private int id;
	@Column
	private String name;
	@Column
	private int masterId;

	@One(target = Master.class, field = "masterId")
	public Master master;

	public Master getMaster() {
		return master;
	}

        public String toString() {
		return "\nPet [id=" + id + ", name=" + name + ", masterId=" + masterId + ", master=" + master + "]\n";
	}

@Table("master")
public class Master {
	@Id
	private int id;
	@Column
	private String name;
	@Many(target = Pet.class, field = "id")
	private List<Pet> pets;

我这样写的，然后测试了查询pet，发现并不能查询到master，得到的结果是

[
Pet [id=1, name=人类, masterId=1, master=null]
,
Pet [id=2, name=超人, masterId=2, master=null]
,
Pet [id=3, name=怪物, masterId=3, master=null]
]

一对一，该怎么配置，多对多呢？新人，求解