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所以我想比较两个连接的实体中的两个 ID，我认为如果我显示 ua 代码会更好的解释

OfferOrder.java

@Data
@Entity
@Table(name = "offer_order", schema = "srp")
@SequenceGenerator(name = "sequence_generator", sequenceName = "srp.offer_order_seq", allocationSize = 1)
@EqualsAndHashCode(callSuper = false, exclude = { "offerOrderProjectRel", "associatedOrder" })
@ToString(callSuper = true)
@NoArgsConstructor
public class OfferOrder extends BaseEntity {
[...]

    @OneToMany(mappedBy = "pk.offerOrder")
    private Set<OfferOrderProjectRel> offerOrderProjectRel = new HashSet<OfferOrderProjectRel>();
[..]
}

ID 在 BaseEntity 中

@Id
@GeneratedValue(strategy = GenerationType.SEQUENCE, generator = "sequence_generator")
protected Long id;

我必须将此 ID 与来自 OfferOrderProjectRel 的 ID 进行比较

    @Data
    @Entity
    @Table(name = "offer_order_project_rel", schema = "srp")
    @AssociationOverrides({
            @AssociationOverride(name = "pk.offerOrder",
                    joinColumns = @JoinColumn(name = "offer_order_id")),
            @AssociationOverride(name = "pk.project",
                    joinColumns = @JoinColumn(name = "project_id")) })
    @EqualsAndHashCode(callSuper = false)
    @ToString(callSuper = true)
    @NoArgsConstructor
    public class OfferOrderProjectRel {

        @EmbeddedId
        private OfferOrderProjectRelId pk = new OfferOrderProjectRelId();

        @Transient
        @NotNull
        private OfferOrder offerOrder;

}

哪个具有来自 OfferORderProjectRelId 的embeddedID

@Embeddable
@EqualsAndHashCode(callSuper = false)
public class OfferOrderProjectRelId implements Serializable {

    @ManyToOne
    private OfferOrder offerOrder;

}

所以在我向你展示重要的东西之后（：P）我创建了休眠的问题

private static final String SELECT_OOPR_TO_SEND = "SELECT R " +
                                                  "FROM OfferOrderProjectRel R, OfferOrder O, Project P " +
                                                  "WHERE R.project.id = P.id and O.id = R.offerOrder.id " +
                                                  "and O.type = 'ORDER' and (P.status = 'PENDING' or P.status ='PROTECTED')" ;

正如你所看到的，我在那里连接了另一个实体，但是一旦我通过了这个，我将能够做另一个我认为的。

所以当我启动这个 hql 我得到那个错误

org.hibernate.QueryException：无法解析属性：offerOrder（或项目）：pl.srp.beans.schema.srp.OfferOrderProjectRel [SELECT R FROM pl.srp.beans.schema.srp.OfferOrderProjectRel R，pl.srp。 beans.schema.srp.OfferOrder O, pl.srp.beans.schema.srp.Project P WHERE R.project.id = P.id and O.id = R.offerOrder.id and O.type = 'ORDER' and （P.status = 'PENDING' 或 P.status ='PROTECTED'）]

我也试过O = R.offerOrder等等。那么我的问题在哪里？

4

1 回答 1

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您需要公共 setter 和 getter offerOrder，没有 getter 就无法调用私有变量

于 2013-10-22T15:21:06.540 回答