我正在尝试更新嵌入式实体,而 JPA 似乎生成了错误的 SQL。
我有一个带有嵌入式徽标实体的公司实体
@Entity
public class Company {
private Long id;
@Embedded
private Logo logo;
// Omitted other fields, getters, setters, etc
}
@Embeddable
public class Logo {
private String fileName;
private String fileExtension;
private String imageDataType;
// Omitted getters and setters
}
在我的 DAO 方法中,我试图像这样更新嵌入式徽标:
@Override
public void setLogo(Logo logo, Long companyId) {
String q = "update Company c SET c.logo = :logo where c.id = :companyId";
Query query = entityManager.createQuery(q);
query.setParameter("companyId", companyId);
query.setParameter("logo", logo);
query.executeUpdate();
}
JPA(实际上是 Hibernate)生成以下 SQL。
update px_company set file_extension, file_name, file_type=(?, ?, ?) where id=?
Hibernate 似乎明白它必须更新三个嵌入的徽标字段,但它会为它生成无效的 SQL。生成的 SQL 会导致错误。
You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ' file_name, file_type=('jpg', '7679075394', 0) where id=1' at line 1
知道我应该如何更新嵌入式实体吗?