Question

我在我的实体@Embeddable中使用REmbeddedReference RTask两次。此embeddable包含QName属性，其类型定义为org.hibernate.usertype.UserType。

@Embeddable
public class REmbeddedReference implements Serializable {

    private String targetOid;
    private String description;
    private String filter;
    private RContainerType type;
    private QName relation;

    @Columns(columns = {
            @Column(name = "relation_namespace"),
            @Column(name = "relation_localPart")
    })
    public QName getRelation() {        return relation;    }

    @Column(length = 36, insertable = true, updatable = true, nullable = true)
    public String getTargetOid() {        return targetOid;    }

    @Type(type = "org.hibernate.type.TextType")
    public String getDescription() {        return description;    }

    @Enumerated(EnumType.ORDINAL)
    public RContainerType getType() {        return type;    }

    @Type(type = "org.hibernate.type.TextType")
    public String getFilter() {        return filter;    }

    ...setters...
}

RTask看起来像这样：

@Entity
@ForeignKey(name = "fk_task")
public class RTask extends RObject {
    private REmbeddedReference objectRef;
    private REmbeddedReference ownerRef;
    ...other fields...

    @Embedded
    public REmbeddedReference getObjectRef() {
        return objectRef;
    }

    @Embedded
    public REmbeddedReference getOwnerRef() {
        return ownerRef;
    }

    ...other methods...
}

在启动期间，我得到： Caused by: org.hibernate.MappingException: Repeated column in mapping for entity: com.evolveum.midpoint.repo.sql.data.common.RTask column: relation_namespace (should be mapped with insert="false" update="false")

我尝试更新我的NamingStrategy方法logicalColumnName，它生成了objectRef_relation_namespace和ownerRef_relation_namespace。但后来我得到： Caused by: org.hibernate.DuplicateMappingException: Table [m_task] contains phyical column name [relation_namespace] represented by different logical column names: [objectRef_relation_namespace], [ownerRef_relation_namespace]

您是否知道如何正确地在relation中映射属性REmbeddedReference？

Answer 1

解决方案：

@AttributeOverride(name="relation.namespace", column=@Column(name="object_namespace")
@AttributeOverride(name="relation.localPart", column=@Column(name="object_localpart")
@Embedded
public REmbeddedReference getObjectRef() {
    return objectRef;
}

@AttributeOverride(name="relation.namespace", column=@Column(name="owner_namespace")
@AttributeOverride(name="relation.localPart", column=@Column(name="owner_localpart")
@Embedded
public REmbeddedReference getOwnerRef() {
    return ownerRef;
}

没用。我必须将QName类型的实施从CompositeUserType更改为另一个可嵌入的实体RQName，该实体代表REmbeddedReference嵌入式中的此属性。

可在实体中使用两次自定义UserType嵌入

1 个答案: