用例
我有其中包含地图的UserProfiles的,你可以看到用户配置被映射为一个元素集合,而不是作为一个单独的实体,用户实体。
@Entity
@Table(name = "user_")
public class User extends AbstractEntity<UserId> {
...
@ElementCollection
@CollectionTable(name = "user_profile")
@MapKey(name = "userProfileType")
@MapKeyEnumerated(STRING)
private Map<UserProfileType, UserProfile> userProfiles;
}
@Embeddable
@NoArgsConstructor(access = PACKAGE)
@AllArgsConstructor(staticName = "of")
@EqualsAndHashCode
public class UserProfile {
@Enumerated(STRING)
private UserProfileType userProfileType;
...
}
注:我使用Hibernate 5.2.14。
问题
当Hibernate处理这些映射,我可以在以下情况例外:
Caused by: org.hibernate.AnnotationException: Associated class not found: UserProfile
at org.hibernate.cfg.annotations.MapBinder.bindKeyFromAssociationTable(MapBinder.java:168) ~[hibernate-core-5.2.14.Final.jar:5.2.14.Final]
at org.hibernate.cfg.annotations.MapBinder.access$000(MapBinder.java:66) ~[hibernate-core-5.2.14.Final.jar:5.2.14.Final]
at org.hibernate.cfg.annotations.MapBinder$1.secondPass(MapBinder.java:101) ~[hibernate-core-5.2.14.Final.jar:5.2.14.Final]
at org.hibernate.cfg.CollectionSecondPass.doSecondPass(CollectionSecondPass.java:54) ~[hibernate-core-5.2.14.Final.jar:5.2.14.Final]
at org.hibernate.boot.internal.InFlightMetadataCollectorImpl.processSecondPasses(InFlightMetadataCollectorImpl.java:1635) ~[hibernate-core-5.2.14.Final.jar:5.2.14.Final]
at org.hibernate.boot.internal.InFlightMetadataCollectorImpl.processSecondPasses(InFlightMetadataCollectorImpl.java:1603) ~[hibernate-core-5.2.14.Final.jar:5.2.14.Final]
at org.hibernate.boot.model.process.spi.MetadataBuildingProcess.complete(MetadataBuildingProcess.java:278) ~[hibernate-core-5.2.14.Final.jar:5.2.14.Final]
at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.metadata(EntityManagerFactoryBuilderImpl.java:861) ~[hibernate-core-5.2.14.Final.jar:5.2.14.Final]
at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.build(EntityManagerFactoryBuilderImpl.java:888) ~[hibernate-core-5.2.14.Final.jar:5.2.14.Final]
at org.springframework.orm.jpa.vendor.SpringHibernateJpaPersistenceProvider.createContainerEntityManagerFactory(SpringHibernateJpaPersistenceProvider.java:57) ~[spring-orm-5.0.4.RELEASE.jar:5.0.4.RELEASE]
at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.createNativeEntityManagerFactory(LocalContainerEntityManagerFactoryBean.java:365) ~[spring-orm-5.0.4.RELEASE.jar:5.0.4.RELEASE]
at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.buildNativeEntityManagerFactory(AbstractEntityManagerFactoryBean.java:388) ~[spring-orm-5.0.4.RELEASE.jar:5.0.4.RELEASE]
at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.afterPropertiesSet(AbstractEntityManagerFactoryBean.java:377) ~[spring-orm-5.0.4.RELEASE.jar:5.0.4.RELEASE]
解决方法尝试
我试图用的,而不是@MapKeyColumn
@MapKey
,但产生另一个错误声称柱user_profile_type
的物理表示已经存在。
题
我想,如果这是应该根据JPA规范工作?
我认为它应该工作,因为我发现了一个非常类似的问题,它已经被固定在休眠5:https://hibernate.atlassian.net/browse/HHH-5393
谢谢你的帮助!
干杯,拉斯洛
虽然我没有参与这个项目最近,我可以看到我检查下列方式代码到Git的张贴问题SOF后的几天。
@Entity
@Table(name = "user_")
public class User extends AbstractEntity<UserId> {
...
@ElementCollection
@CollectionTable(name = "user_profile")
@MapKeyColumn(name = "user_profile_type", insertable = false, updatable = false)
@MapKeyEnumerated(STRING)
private Map<UserProfileType, UserProfile> userProfiles;
...
}
@Embeddable
@NoArgsConstructor(access = PACKAGE)
@AllArgsConstructor(staticName = "of")
@EqualsAndHashCode
@ToString(of = {"userProfileType", "fullName"})
public class UserProfile {
@Enumerated(STRING)
@Column(name = "user_profile_type")
private UserProfileType userProfileType;
...
}
public enum UserProfileType {
FACEBOOK, GOOGLE;
}
招数,我想,一定是添加insertable = false, updatable = false
并消除了user_profile_type
已定义的错误。