EclipseLink DDL生成錯誤

當Embeddable類有另一個Entity O/R映射註釋時，我無法使用EclipseLink生成DDL。如何爲我的O/R映射生成DDL？EclipseLink DDL生成錯誤

Company.java

@Entity 
public class Company implements Serializable { 
    ..... 

    @Embedded 
    private CompanyAddress address; 
}

CompanyAddress.java

@Embeddable 
public class CompanyAddress implements Serializable { 
    ..... 

    @Embedded 
    @OneToOne(fetch = FetchType.EAGER) 
    @JoinColumn(name = "TOWNSHIP_ID", referencedColumnName = "ID") 
    private Township township; 
}

Township.java

@Entity 
public class Township implements Serializable { 
    ..... 
}

當我生成我得到以下錯誤，

Exception [EclipseLink-195] (Eclipse Persistence Services - 2.1.2.v20101206-r8635): org.eclipse.persistence.exceptions.DescriptorException 
Exception Description: The shared class org.ace.insurance.system.common.company.CompanyAddress must not reference the isolated class org.ace.insurance.system.common.township.Townsh 
ip. 
Mapping: org.eclipse.persistence.mappings.OneToOneMapping[township] 
Descriptor: RelationalDescriptor(org.ace.insurance.system.common.company.CompanyAddress --> [DatabaseTable(COMPANY)])

來源

2013-02-11 CycDemo

如果我正確理解你，你希望鄉鎮成爲一個正常的獨立實體。在這種情況下，您應該從CompanyAddress中的鄉鎮字段中刪除@Embedded註釋。如果你想嵌入它，那麼Township需要一個@Embeddable註解來代替@Entity。

來源

2013-02-11 07:03:33 Eelke

感謝您的幫助，我認爲JPA規範允許'Embedded'類與其他'Entity'進行O/R映射。 – CycDemo 2013-02-13 04:27:20

EclipseLink DDL生成錯誤

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