JPA Hibernate没有触发JOIN查询

Question

我有2个数据库表。实体设计为：

@Entity
@Table(name="CityTable")
public class CityTable implements Serializable {
    private static final long serialVersionUID = 1L;

    @Id
    @Column(name="city_id")
    private int cityId;

    private int addedBy;

    @Column(name="city_name")
    private String cityName;



    @OneToMany(fetch=FetchType.EAGER)
    @JoinColumn(name="city_id", referencedColumnName="city_id", insertable=false, updatable=false)
    private List<VirtualCityMapping> virtualCity;

    . getters and setters

}

第二

@Entity
@Table(name="virtualCityMapping")
public class VirtualCityMapping implements Serializable {
    private static final long serialVersionUID = 1L;

    @EmbeddedId
    private VirtualCityMappingEmbedded key; 

    public VirtualCityMapping() {
    }

    public VirtualCityMappingEmbedded getKey() {
        return key;
    }

    public void setKey(VirtualCityMappingEmbedded key) {
        this.key = key;
    }

    @Override
    public String toString() {
        return "VirtualCityMapping [key=" + key + "]";
    }


}

使用嵌入式密钥，如下所述

@Embeddable
public class VirtualCityMappingEmbedded implements Serializable {

    @Column(name="city_id",nullable=false)
    private int cityId;

    @Column(nullable=false)
    private int virtualCityId;

    public int getCityId() {
        return cityId;
    }

    public void setCityId(int cityId) {
        this.cityId = cityId;
    }

    public int getVirtualCityId() {
        return virtualCityId;
    }

    public void setVirtualCityId(int virtualCityId) {
        this.virtualCityId = virtualCityId;
    }

    @Override
    public String toString() {
        return "VirtualCityMappingEmbedded [cityId=" + cityId + ", virtualCityId=" + virtualCityId + "]";
    }


}

我的城市回购

公共接口CityRepository扩展了JpaRepository {

List<CityTable> findByCityIdIn(List<Integer> stateId);

}

我的问题是当我调用此Repo函数时，两个单个查询被触发而不是JOin查询。

我应该如何更改我的代码？