Question

Caused by: <openjpa-2.2.3-SNAPSHOT-r422266:1677238 fatal user error> org.apache.openjpa.persistence.ArgumentException: In "main.java.jpa.OepRole.oepUsers" it is declared that it is mapped to "OepRole", but it is not a field of the associated type.

            at org.apache.openjpa.meta.FieldMetaData.getMappedByMetaData(FieldMetaData.java:867)

            at org.apache.openjpa.jdbc.meta.FieldMapping.getMappedByMapping(FieldMapping.java:447)

            at org.apache.openjpa.jdbc.meta.MappingRepository.useInverseKeyMapping(MappingRepository.java:1047)

            .....

            at org.apache.openjpa.persistence.EntityManagerImpl.createQuery(EntityManagerImpl.java:997)

            at com.ibm.ws.persistence.EntityManagerImpl.createQuery(EntityManagerImpl.java:160)

            at com.ibm.ws.persistence.EntityManagerImpl.createQuery(EntityManagerImpl.java:139)

            at com.ibm.ws.persistence.EntityManagerImpl.createQuery(EntityManagerImpl.java:50)

            at ru.soa.service.sudir.itdi.smallsystem_generic_webservice_connector._1_0.GenericAccountManagementSoapBindingImpl.getAccountList(GenericAccountManagementSoapBindingImpl.java:684)

我想表格链接中的问题。我想表格链接中的问题。这是我试图链接我的表格的方式。

It OepRole table
//bi-directional many-to-one association to OepUser
@OneToMany(mappedBy="OepRole")
private List<OepUser> oepUsers;


It OepUser table 
//bi-directional many-to-one association to OepRole
@ManyToOne()
@JoinColumn(name="USER_ROLE_ID")
private OepRole oepRole;

我试图改变mappedBy，尝试了所有不合逻辑的逻辑动作，但它并没有帮助我。我做错了什么？

Answer 1

试试这个，OepRole名称 @OneToMany(mappedBy="oepRole") private List<OepUser> oepUsers; @ManyToOne() @JoinColumn(name="USER_ROLE_ID",nullable=false) private OepRole oepRole; 和另一个实体变量中的变量名必须匹配。

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表格链接不正确？

1 个答案: