[英]Update only not null fields
How to tell hibernate to not update fields with null values ? 如何告诉休眠不更新具有空值的字段?
I have filled entity (without password field which is not-null field). 我已经填写了实体(没有密码字段,该字段不是null)。 I want to update all filled fields in entity (skip the fields with null values) but I recive error like that:
我想更新实体中的所有填充字段(跳过具有空值的字段),但我收到如下错误:
by: org.postgresql.util.PSQLException: ERROR: null value in column "password" violates not-null constraint
How to tell hibernate to update ONLY changed fields (an skip all null values). 如何告诉休眠仅更新更改的字段(跳过所有空值)。
workerService: workerService:
public Worker updateWorker(Worker worker) { // only a few fields are filled.
workerDao.update(worker);
return worker;
}
and DAO: 和DAO:
@Repository
@Transactional
abstract public class AbstractDao<T> {
@Autowired
private SessionFactory sessionFactory;
//....
public void update(T entity) {
sessionFactory.getCurrentSession().update(entity);
}
//...
WorkerEntity: WorkerEntity:
@Entity
@Table(name = "worker", schema = "public")
@DynamicUpdate
public class Worker implements java.io.Serializable {
The dynamic-update attribute tells Hibernate whether to include unmodified properties in the SQL UPDATE statement. dynamic-update属性告诉Hibernate是否在SQL UPDATE语句中包括未修改的属性。
dynamic-update=true then only updated column will appear in update query dynamic-update = true,那么更新查询中将仅显示已更新的列
@Entity
@Table(name = "test", catalog = "test_1")
@org.hibernate.annotations.Entity(
dynamicUpdate = true
)
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