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如何在hibernate中将一个属性映射到2个属性?
例子:如何在Hibernate中将一个属性映射到多个属性?
@Entity
@Table(name = "Author")
public class ModelAuthor extends Model {
@ManyToMany(mappedBy = "authorList",
fetch = FetchType.LAZY)
private Set<ModelConceptualBook> conceptualBookList;
}
@Entity
@Table(name = "ConceptualBook")
public class ModelConceptualBook extends Model {
@ManyToMany(fetch = FetchType.LAZY)
@JoinTable(name = "ConceptualBook_Author",
joinColumns = {@JoinColumn(name = "conceptualBookId")},
inverseJoinColumns = {@JoinColumn(name = "authorId")})
private Set<ModelAuthor> authorList;
private Set<ModelAuthor> translatorList;
}
现在我想有anaother表ConceptualBook_Author
映射translatorList
从ModelConceptualBook
到ModelAuthor
像authorList
conceptualBookList
。
如何实现此功能?
非常感谢您的帮助;)
非常感谢您的帮助,但我能写的“@ManyToMany(的mappedBy =‘而不是authorList’,取= FetchType .LAZY)“为”ModelAuthor“类中的”conceptualBookList“? – user3205721
已添加到答复。它不是,而是作为现有的补充。这些是相同类型之间的两种不同关系,角色:翻译者和角色:作者。如果需要将两个集合合并为一个并返回的附加方法当然可以添加。 –