Question

我目前遇到设置谓词的问题，其中集合使用的是InheritanceType.JOINED。我目前正在使用QueryDSL 3.6.3。

我试图创建一个基类的谓词，如下所示：

final QCollector collector = QCollector.collector;
final JPAQuery query = new JPAQuery(entityManager);
query.from(collector).where(collector.parents.any().desc.eq("test"));
final List<Collector> results = query.list(collector);

生成此JPQL：

select collector 
from Collector collector 
where exists (select 1 from collector.parents as collector_parents_1f637
              where collector_parents_1f637.desc = ?1)

并导致以下SQL

select collector0_.ID as ID1_1_ from COLLECTOR collector0_ where exists (select 1 from PARENT parents1_ where collector0_.ID=parents1_.PARENT_ID and parents1_1_.DESC=?)

此SQL不正确，因为它未加入BASE for DESC。我的JPA映射中是否存在一些错误，因为我错误地构建了谓词？

示例代码

@Entity
@Table(name = "BASE")
@Inheritance(strategy = InheritanceType.JOINED)
public abstract class Base implements Serializable {

    @Column(name = "BASE_ID")
    @Id
    private Long id;

    @Column(name = "CODE")
    private String code;

    @Column(name = "DESC")
    private String desc;
    ...

@Entity
@Table(name = "PARENT")
@PrimaryKeyJoinColumn(name = "BASE_ID", referencedColumnName = "BASE_ID")  
public class Parent extends Base {

    @Column(name = "PARENT_ID")    private Long parentId;
    ...

@Entity@Table(name = "COLLECTOR")
public class Collector implements Serializable {

    @Column(name = "ID")
    @Id
    private Long id;

    @OneToMany(mappedBy = "parentId")
    private List<Parent> parents;
    ....

CREATE TABLE BASE (
    BASE_ID NUMERIC(18,0) NOT NULL,
    CODE VARCHAR(10),
    DESC VARCHAR(200),
    PRIMARY KEY (BASE_ID)
);

CREATE TABLE PARENT (
    BASE_ID NUMERIC(18,0) NOT NULL,
    PARENT_ID NUMERIC(18,0) NOT NULL,
    PRIMARY KEY (BASE_ID)
);

CREATE TABLE COLLECTOR (
    ID NUMERIC(18,0) NOT NULL,
    PARENT_ID NUMERIC(18,0) NOT NULL,
    PRIMARY KEY (ID)
);

QueryDSL问题与任何（）和InheritanceType.JOINED

0 个答案: