Question

有一个名称为Transaction的实体，它具有两个名称分别为@OneToOne和ServiceTransaction的映射的（OtherFeeTransaction）子实体。可以同时对所有字段（子实体字段）使用“规范”进行过滤。

交易实体：

 public class Transaction implements Serializable {

    private static final long serialVersionUID = 1L;
    @Id
    @GeneratedValue(generator = "UUID")
    @GenericGenerator(
        name = "UUID",
        strategy = "org.hibernate.id.UUIDGenerator"
    )
    @Column(name = "id", updatable = false, nullable = false, columnDefinition = "uuid")
    private UUID id;

    @Column(name = "txn_id")
    private String txnId;

    @Column(name = "account_no")
    private String accountNo;

    @Column(name = "date", nullable = false)
    private Date date;

    @OneToOne(fetch = FetchType.EAGER, cascade = CascadeType.ALL)
    @JoinColumn(name = "service_id")
    private ServiceTransaction serviceTransaction;

    @OneToOne(fetch = FetchType.EAGER, cascade = CascadeType.ALL)
    @JoinColumn(name = "other_id")
    private OtherFeeTransaction otherFeeTransaction;

    }

OtherFee实体：

public class OtherFeeTransaction implements Serializable {

private static final long serialVersionUID = 1L;
@Id
@GeneratedValue(generator = "UUID")
@GenericGenerator(
    name = "UUID",
    strategy = "org.hibernate.id.UUIDGenerator"
)
@Column(name = "id", updatable = false, nullable = false, columnDefinition = "uuid")
private UUID id;

@Column(name = "other_fee_id")
private UUID otherFeeId;

@Column(name = "type_data_id")
private String typeDataId;

}

服务实体：

public class ServiceTransaction implements Serializable {

private static final long serialVersionUID = 1L;
@Id
@GeneratedValue(generator = "UUID")
@GenericGenerator(
    name = "UUID",
    strategy = "org.hibernate.id.UUIDGenerator"
)
@Column(name = "id", updatable = false, nullable = false, columnDefinition = "uuid")
private UUID id;

@Column(name = "parcel_id")
private String cadastreId;

@Column(name = "ba_unit_id")
private String titleId;

}

规格

Predicate service = cb.like(root.<ServiceTransaction>get("serviceTransaction").get("titleId"),
                "%" + criteria.getTitleId() + "%");

Predicate other = cb.like(root.<OtherFeeTransaction>get("otherFeeTransaction").get("typeDataId"),
                "%" + criteria.getTitleId() + "%");
//works if any one of the predicates is added, but doesn't work if both given like below
predicateList.add(service);
predicateList.add(other);

criteriaQuery.where(cb.and(predicateList.toArray(new Predicate[predicateList.size()])))
            .getRestriction();

如果给定predicate的{{1}}或service中的任何一个都能得到结果，但是如果两个other都给出了，则不能得到结果。

即使尝试过predicates也无法正常工作

Answer 1

我知道了，忘记了在映射实体上使用LeftJoin

   Predicate service = cb.like(root.join("serviceTransaction",JoinType.LEFT).get("cadastreId"),
            "%" + criteria.getParcelId() + "%");

        Predicate other = cb.like(root.join("otherFeeTransaction",JoinType.LEFT).get("typeDataId"),
            "%" + criteria.getParcelId() + "%");

        predicateList.add(cb.or(service,other));

Spring Boot规范可对两个子实体进行过滤

1 个答案: