Question

我正在使用Spring-Data-JPA和EclipseLink开发一个多租户（多模式）应用程序。当不使用多租户功能时，一切正常，JPA实体作为魅力工作，显然只适用于一个模式。当我尝试激活多租户时，将folloqing注释添加到实体：

@Multitenant(value=MultitenantType.TABLE_PER_TENANT)
@TenantTableDiscriminator(type=TenantTableDiscriminatorType.SCHEMA, contextProperty="eclipselink-tenant.id")

我重新启动应用程序，我得到以下异常：

Caused by: java.lang.IllegalArgumentException: No @IdClass attributes exist on the IdentifiableType [EntityTypeImpl@15818739:CrsMomiJob [ javaType: class com.gpdati.momi.model.core.CrsMomiJob descriptor: RelationalDescriptor(com.gpdati.momi.model.core.CrsMomiJob --> [DatabaseTable(CRS_MOMI_JOB)]), mappings: 7]].  There still may be one or more @Id or an @EmbeddedId on type.
at org.eclipse.persistence.internal.jpa.metamodel.IdentifiableTypeImpl.getIdClassAttributes(IdentifiableTypeImpl.java:169)
at org.springframework.data.jpa.repository.support.JpaMetamodelEntityInformation$IdMetadata.<init>(JpaMetamodelEntityInformation.java:170)
at org.springframework.data.jpa.repository.support.JpaMetamodelEntityInformation.<init>(JpaMetamodelEntityInformation.java:71)
at org.springframework.data.jpa.repository.support.JpaEntityInformationSupport.getMetadata(JpaEntityInformationSupport.java:65)
at org.springframework.data.jpa.repository.support.JpaRepositoryFactory.getEntityInformation(JpaRepositoryFactory.java:146)
at com.gpdati.momi.jpa.MultiTenantJpaRepositoryFactory.getTargetRepository(MultiTenantJpaRepositoryFactory.java:30)
at org.springframework.data.jpa.repository.support.JpaRepositoryFactory.getTargetRepository(JpaRepositoryFactory.java:67)
at org.springframework.data.repository.core.support.RepositoryFactorySupport.getRepository(RepositoryFactorySupport.java:136)
at org.springframework.data.repository.core.support.RepositoryFactoryBeanSupport.getObject(RepositoryFactoryBeanSupport.java:153)
at org.springframework.data.repository.core.support.RepositoryFactoryBeanSupport.getObject(RepositoryFactoryBeanSupport.java:43)
at org.springframework.beans.factory.support.FactoryBeanRegistrySupport.doGetObjectFromFactoryBean(FactoryBeanRegistrySupport.java:142)
... 79 more

看起来Id字段上的@Id注释不再从寻找@IdClass注释的Spring-Data中读取（我认为在使用复合主键时需要@IdClass注释，这不是我的情况）< / p>

有任何线索吗？谢谢！

这里是完整的实体代码：

@Entity
@Table(name="CRS_MOMI_JOB")
@Multitenant(value=MultitenantType.TABLE_PER_TENANT)
@TenantTableDiscriminator(type=TenantTableDiscriminatorType.SCHEMA, contextProperty="eclipselink-tenant.id")
public class CrsMomiJob implements Serializable {
private static final long serialVersionUID = -432489894772L;

private String abilitata;

@Column(name="HOT_CODICE")
private String hotCodice;

@Column(name="INT_CODICE")
private String intCodice;

private Long intervallo;

private String note;

private String parametri;

@Id
private BigDecimal id;      

public CrsMomiJob() {
}

... all getters and setters ...

}

Answer 1

似乎是hasSingleIdAttribute（）中EclipseLink元模型代码中的一个错误，它返回true（因为id是多租户的复合）但是这应该是隐藏的，所以应该返回false。

请记录错误。

EclipseLink MultiTenant和Spring Data JPA - 需要@IdClass注释 - 为什么？

1 个答案: