從實體比較ID HQL

所以我想對兩個ID從連接我的兩個實體比較，嗯，我想更好的解釋將是，如果我表現出UA碼從實體比較ID HQL

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>(); 
[..] 
}

的ID是BaseEntity

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

，我要這個ID與我的ID從OfferOrderProjectRel

比較

@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; 

}

從OfferORderProjectRelId

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

    @ManyToOne 
    private OfferOrder offerOrder; 

}

有embeddedID所以之後我顯示ü重要的東西（：P）的IM創造問題冬眠

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IM連接的另一個實體存在，但一旦我獲得通過這一點，我將能夠做另一個我認爲。

所以，當我勞克這個的HQL我得到errror

org.hibernate.QueryException：無法解析屬性：的offerOrder（或項目）： 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'or P.stat us ='PROTECTED'）]

我也嘗試過O = R.offerOrder等。所以我的問題呢？

來源

2013-10-22 ojciecmatki

您需要公共getter和setter方法爲offerOrder，沒有一個getter私有變量不能被稱爲

來源

2013-10-22 15:21:06 david99world

啊我忘了提及的getter和setter offerOrder等都是全自動製作 – ojciecmatki

反正我得到它，但是，使用R .pk.offerOrder。感謝您的回答;） – ojciecmatki

從實體比較ID HQL

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