查询单向多对一索引

Question

我正在尝试使 Hibernate Search 索引具有以下关系：

DocVersion *<-> Document2 -> DocType

@Indexed
@Entity
public class Document2 implements Serializable {
    @Id
    @GeneratedValue(strategy = GenerationType.SEQUENCE)
    @Column(name = "doc_uuid")
    private long id;

    @IndexedEmbedded
    @ManyToOne(cascade = CascadeType.MERGE, fetch = FetchType.LAZY)
    @JoinColumn(name = "documentType")
    private DocType docType;
}



@Indexed
@Entity
public class DocType implements  Serializable {
    @Id
    @GeneratedValue(strategy = GenerationType.SEQUENCE)
    @Column(name = "doctype_id")
    private long id;

    @Field
    @Column(name = "documentType")
    private String documentType;
}

所以它是来自 Document2 class 的单向 @ManyToOne 关系，因为 DocType 只是一个代码表。

但是我需要查询基于 cdt 的属性的索引，例如 document2.docType.documentType，这给了我：

WARNING: org.hibernate.search.exception.SearchException: Unable to find field document2.docType.documentType in com.nws.vedica.model.entity.DocVersion

我错过了什么？

休眠搜索：5.9.3.Final

Answer 1

所以我错过了需要在 @IndexedEmbedded 对面的 @ContainedIn。对我来说 Document2:

    @ContainedIn
    @OneToMany(mappedBy = "document2", cascade = CascadeType.ALL, fetch = FetchType.EAGER)
    @org.hibernate.annotations.Cache(
            usage = CacheConcurrencyStrategy.READ_WRITE
    )
    private Set<DocVersion> docVersions;

并且在 DocType 中作为 'leaf' 根本不需要 link 回到 Document2。

希望对某人有所帮助

查询单向多对一索引

query unidirectional many2one index

lucene

hibernate

hibernate-search