JPQL 查询列表中的参数

Question

我有两个 JPA 实体：

public class BusinessTripRequest extends StandardEntity {
    @OneToMany(mappedBy = "businessTripRequest", fetch = FetchType.LAZY)
    @OnDelete(DeletePolicy.CASCADE)
    @Composition
    protected List<HotelBooking> hotelBookings;
}

public class HotelBooking extends StandardEntity {
    @ManyToOne(fetch = FetchType.LAZY)
    @JoinColumn(name = "BUSINESS_TRIP_REQUEST_ID")
    protected BusinessTripRequest businessTripRequest;

    @Column(name = "JOINT_CHECK_IN")
    protected Boolean jointCheckIn;
}

我尝试编写一个 JPQL 查询来提取请求：

如果参数为 false，则提取所有带有空 hotelBookings 的请求，并且每个预订的所有请求都将参数 jointCheckIn 设置为 false
如果参数为 true，则提取所有具有一项或多项预订且 jointCheckIn 设置为 true

我写了这样的东西

select e from nk$BusinessTripRequest e join e.hotelBookings hb
where (true = ? and e.hotelBookings is not empty and hb.jointCheckIn = true)
or (false = ? and e.hotelBookings is empty)

由于第一个条件，当参数为 true 时效果很好。但是我不能为false参数

写一个工作条件

Answer 1

根据评论建议的解决方案

select e
from nk$BusinessTripRequest e
where (true = ? and e.id in (select hb1.businessTripRequest.id
                         from HotelBooking hb1
                         where hb1.jointCheckIn = true))
   or (false = ? and {E}.id not in (select hb1.businessTripRequest.id
                                    from nokia$HotelBooking hb1
                                    where hb1.jointCheckIn = true))

JPQL 查询列表中的参数

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java

jpa

jpql