@MappedSuperClass 上的 JPA 查询。获取所有 child class 的详细信息？

Question

我有 3 个单选按钮 1.Car, 2.Bike, 3.Both。所以如果我 select car 它将获取所有汽车详细信息，如果我 select 2 它只会获取汽车详细信息，直到我能够实现，但如何实现如果我 select 第三个单选按钮，则获取汽车和自行车的详细信息 "both"。在下面的示例中，我想在 selecting "both" 上做同样的事情它将获取所有文件。最好的解决方案是什么？

    Parent class:
    @MappedSuperclass
    public abstract class BaseProsecutionDocument {

    private long dmsDocumentId;
    private long documentVersion;
    private String fileName;
    …
    }

    Pros class:

    @Entity
    @Table(schema = “reference”, name = “prosecution_documents”)
    public class ProsDocument extends BaseProsecutionDocument {

    private Long id;
    private Long prosId;
    private Long ocportalSubmissionId;
    …
    }

    Sumisiion class:

    @Entity
    @Immutable
    @Table(schema = “reference”, name = “submission_docs”)
    public class submissionDocument extends BaseProsecutionDocument {

    private Long id;
    private Long inventionId;
    …
    }
    I want to know how to write the query for that..like
    i have written for those 2 radio buttons:

    public interface ProsecutionDocumentRepository extends JpaRepository {
    @Query(value = “SELECT ppd FROM ProsDocument ppd ” +
    “WHERE ppd.submissionId IN (SELECT p.id FROM submission p WHERE 
UPPER(p.doc) = UPPER(:doc)) ” +
    “AND ppd.documentType.documentType in (‘OFFICE’)”)
    Page findSubmissionOfficeDocumentsByDoc(@Param(“doc”) String docket, 
Pageable pageable);
    }

Or do I need to change the @MappedSuperClass to @Entity and use @Inheritance(strategy = InheritanceType.JOINED)

Answer 1

首先用基本字段

创建一个基础Class

@MappedSuperclass
public class FooBase {

@Id
private Long id;
private String name;

}

将此 class 映射到空 class

上的 table

@Entity
@Table(name = "foo")
public class Foo  extends FooBase{

}

将嵌套对象、集合、子资源映射到另一个 class 但相同 table "foo"

@Entity
@Table(name = "foo")
public class FooNested extends FooBase {

    @Fetch(FetchMode.SUBSELECT)
    @OneToMany(fetch = FetchType.EAGER)
    @JoinColumn(name = "foo_id", insertable = false, updatable = false)
    @ApiModelProperty(hidden = true)
    private List<Bar> barList;
    }

为每个实体创建一个 Reporitory
使用一个或其他存储库来 FETCh 或不是真实的 tables/entities

@MappedSuperClass 上的 JPA 查询。获取所有 child class 的详细信息？

JPA query on @MappedSuperClass. Fetch details of all the child class?

hibernate

jpa

spring-hateoas

spring-boot