org.hibernate.MappingException：OneToOne Mapping的實體映射中的重複列

Question

我在建立OneToOne兩個類別SkuImpl和SkuAvailability之間的關係。下面是對代碼

SkuImpl.java

@Entity 
public class SkuImpl implements Sku { 
    @OneToOne(targetEntity=SkuAvailabilityImpl.class) 
    protected SkuAvailability totalSku; 
    //setter and getters 
} 

SkuAvailabilityImpl.java

@Entity 
public class SkuAvailabilityImpl implements SkuAvailability{ 
    @OneToOne(optional=true,targetEntity=SkuImpl.class,cascade=CascadeType.ALL) 
    @JoinColumn(name="SKU_ID") 
    protected Sku sku; 
    //setter and getters 
} 

當我嘗試應用程序部署到GlassFish中它沒有部署，得到一個異常說

Caused by: org.hibernate.MappingException: Repeated column in mapping for entity: 
SkuAvailabilityImpl column: SKU_ID 
(should be mapped with insert="false" update="false") 

如何解決這個例外？

Answer 1

試着寫@JoinColumn這樣的：

@OneToOne(optional=true,targetEntity=SkuImpl.class,cascade=CascadeType.ALL) 
@JoinColumn(name="SKU_ID",referencedColumnName="someNameOfColumnId") 
protected Sku sku; 

的referencedColumnName是列ID在SkuImpl類。

在下面的代碼是不必要romve它：

@OneToOne(targetEntity=SkuAvailabilityImpl.class) 
    protected SkuAvailability totalSku;