嵌入式和嵌入式ID之间的JPA映射@ManyToOne
2022-09-01 17:33:06
我在Spring Boot JPA应用程序中进行了以下设置:
嵌入
@Embeddable
public class LogSearchHistoryAttrPK {
@Column(name = "SEARCH_HISTORY_ID")
private Integer searchHistoryId;
@Column(name = "ATTR", length = 50)
private String attr;
@ManyToOne
@JoinColumn(name = "ID")
private LogSearchHistory logSearchHistory;
...
}
嵌入式Id
@Repository
@Transactional
@Entity
@Table(name = "LOG_SEARCH_HISTORY_ATTR")
public class LogSearchHistoryAttr implements Serializable {
@EmbeddedId
private LogSearchHistoryAttrPK primaryKey;
@Column(name = "VALUE", length = 100)
private String value;
...
}
一对多
@Repository
@Transactional
@Entity
@Table(name = "LOG_SEARCH_HISTORY")
public class LogSearchHistory implements Serializable {
@Id
@Column(name = "ID", unique = true, nullable = false)
private Integer id;
@OneToMany(mappedBy = "logSearchHistory", fetch = FetchType.EAGER)
private List<LogSearchHistoryAttr> logSearchHistoryAttrs;
...
}
数据库滴滴涕
CREATE TABLE log_search_history (
id serial NOT NULL,
...
CONSTRAINT log_search_history_pk PRIMARY KEY (id)
);
CREATE TABLE log_search_history_attr (
search_history_id INTEGER NOT NULL,
attr CHARACTER VARYING(50) NOT NULL,
value CHARACTER VARYING(100),
CONSTRAINT log_search_history_attr_pk PRIMARY KEY (search_history_id, attr),
CONSTRAINT log_search_history_attr_fk1 FOREIGN KEY (search_history_id) REFERENCES
log_search_history (id)
);
当我去启动应用程序时,我收到以下错误:
Caused by: org.hibernate.AnnotationException: mappedBy reference a unknown target entity property: com.foobar.entity.LogSearchHistoryAttr.logSearchHistory in com.foobar.entity.LogSearchHistoryAttrs
我不确定为什么我会收到此错误 - 映射看起来正确(对我来说)。我的这个映射有什么问题?谢谢!