我有实体家长和儿童,其中儿童延伸家长经典传承的持久性。类父是抽象的,而子不是。休眠Envers:@Audited上一个子类
我想审计孩子。这个实体在我的控制下,而父不是。此外,它还有许多其他不需要审计的子类。整个层级的继承策略是JOINED。
因此,我已注释的儿童与@Audited和另外用@AuditOverride(forClass = Parent.class)。
我得到的是这样的错误:
"org.hibernate.MappingException: Entity 'Child' is audited, but its superclass: 'Parent' is not."
顺便说一句,我使用envers 4.0.1.Final版本。
有谁知道我该如何做到这一点? 我试着删除@Audited在儿童类,除去@AuditOverride,使用过时auditParents在@Audited注释,但似乎没有任何工作。
这是父实体:
@Entity
@Table(name = "parent")
@Inheritance(strategy = InheritanceType.JOINED)
@DiscriminatorColumn(name = "type")
public class Parent {
public Parent() {
super();
}
@Id
@GeneratedValue(strategy = IDENTITY)
@Column(name = "base_id", unique = true, nullable = false)
private Integer baseId;
@Column(name = "base_field")
private String baseField;
@Column(name = "type")
private String type;
// getters and setters
}
这是我的孩子实体:
@Entity
@Table(name = "child")
@DiscriminatorValue("CHILD")
@Audited
@AuditOverride(forClass = Parent.class)
public class Child extends Parent {
public Child() {
super();
}
@Column(name = "child_field")
private String childField;
// getters and setters
}
这是实体:
CREATE TABLE `REVINFO` (
`REV` BIGINT NOT NULL AUTO_INCREMENT,
`REVTSTMP` BIGINT NULL ,
PRIMARY KEY (`REV`)
);
CREATE TABLE `parent` (
`base_id` int(11) NOT NULL AUTO_INCREMENT,
`base_field` varchar(45) DEFAULT NULL,
`type` varchar(45) NOT NULL,
PRIMARY KEY (`base_id`)
);
CREATE TABLE `child` (
`base_id` int(11) NOT NULL AUTO_INCREMENT,
`child_field` varchar(45) DEFAULT NULL,
PRIMARY KEY (`base_id`)
);
CREATE TABLE `child_AUD` (
`base_id` int(11) NOT NULL,
`REV` BIGINT NOT NULL,
`REVTYPE` tinyint(2) DEFAULT NULL,
`child_field` varchar(45) DEFAULT NULL,
PRIMARY KEY (`base_id`,`REV`)
);
下面是测试情况:
public class EnversInheritanceTest extends AbstractJUnit4SpringContextTests {
@Inject
private EntityManagerFactory entityManagerFactory;
private EntityManager entityManager;
@Test
public void inheritanceTest() {
this.entityManager = this.entityManagerFactory.createEntityManager();
Child child = this.createChild();
this.saveChild(child);
this.modifyChild(child);
this.saveChild(child);
Assert.assertNotNull(child.getBaseId());
Assert.assertNotNull(this.getOriginalRevision(child.getBaseId()));
Child original = this.getOriginalChild(child.getBaseId());
Assert.assertNotNull(original);
Assert.assertEquals("child", original.getChildField());
}
private Child createChild() {
Child child = new Child();
child.setBaseField("base");
child.setChildField("child");
child.setType("CHILD");
return child;
}
private void saveChild(Child child) {
this.entityManager.getTransaction().begin();
this.entityManager.persist(child);
// We need to commit in order to trigger Envers magic
this.entityManager.getTransaction().commit();
}
private void modifyChild(Child child) {
child.setBaseField("foo");
child.setChildField("bar");
}
public Child getOriginalChild(Serializable id) {
Object queryResult = this.getAuditReader().createQuery()
.forEntitiesAtRevision(Child.class, this.getOriginalRevision(id))
.add(AuditEntity.id().eq(id))
.getSingleResult();
return (Child) queryResult;
}
private Number getOriginalRevision(Serializable id) {
AuditProjection minRevNumberAuditProjection = AuditEntity.revisionNumber().min();
Number revision = (Number) this.getAuditReader().createQuery()
.forRevisionsOfEntity(Child.class, false, false)
.add(AuditEntity.id().eq(id))
.addProjection(minRevNumberAuditProjection)
.getSingleResult();
return revision;
}
private AuditReader getAuditReader() {
return AuditReaderFactory.get(this.entityManager);
}
}
最后这里的土豆:
预先感谢您!
很可能是'hibernate-envers'中的一个bug。请参阅:https://forum.hibernate.org/viewtopic.php?p=2489543 – Andremoniy
这种映射在hibernate 5中工作正常。一种解决方案是更新休眠。 –