覆蓋指向複合鍵的外鍵名稱JPA/Hibernate

我正在使用spring-boot-1.5.4和spring-data-jpa，我試圖在spring.jpa.hibernate.ddl-auto=create期間覆蓋自動生成的外鍵名稱。覆蓋指向複合鍵的外鍵名稱JPA/Hibernate

對於簡單的ID，我能夠覆蓋它：simple_fk

Hibernate: alter table my_entity add constraint simple_fk foreign key (simple_id) references simple

但不適合外鍵與複合ID：FKms12cl9ma3dk8egqok1dasnfq

Hibernate: alter table my_entity add constraint FKms12cl9ma3dk8egqok1dasnfq foreign key (composite_id1, composite_id2) references composite

什麼是錯我的代碼？我也試過@PrimaryKeyJoinColumn。

請參閱下面的類定義。

@Entity 
public class Simple { 
    @Id 
    private long id; 
} 

@Entity 
public class Composite { 
    @Id 
    private CompositeId id; 
} 

@Embeddable 
public class CompositeId { 
    @Column 
    private long id1; 
    @Column 
    private long id2; 
} 

@Entity 
public class MyEntity { 
    @ManyToOne 
    @JoinColumn(foreignKey = @ForeignKey(name = "simple_fk"), 
     name = "simple_id", referencedColumnName = "id") 
    private Simple simple; 

    @ManyToOne 
    @JoinColumns(foreignKey = @ForeignKey(name = "composite_fk"), value = { 
     @JoinColumn(name = "composite_id1", referencedColumnName = "id1"), 
     @JoinColumn(name = "composite_id2", referencedColumnName = "id2") 
    }) 
    private Composite composite; 
}

來源

2017-07-14 jchips12

這是known issue與Hibernate能夠在版本5.2.8修復

因此，有兩種方法來解決這個問題：要麼你加入更新的Hibernate的版本5.2.8或向上

<hibernate.version>5.2.10.Final</hibernate.version>

到您的pom.xml，它基本上會將Hibernate更新到最新版本。

，或者休眠更新是不可能的，或者是太冒險，你可以添加傳統的/不推薦您 composite場@org.hibernate.annotations.ForeignKey(name = "composite_fk")註釋這將使你的代碼看起來像

@Entity 
public class MyEntity { 
    @ManyToOne 
    @JoinColumn(foreignKey = @ForeignKey(name = "simple_fk"), name = "simple_id", referencedColumnName = "id") 
    private Simple simple; 

    @ManyToOne 
    @JoinColumns(foreignKey = @ForeignKey(name = "composite_fk"), value = { 
     @JoinColumn(name = "composite_id1", referencedColumnName = "id1"), 
     @JoinColumn(name = "composite_id2", referencedColumnName = "id2") }) 
    @org.hibernate.annotations.ForeignKey(name = "composite_fk") 
    private Composite composite; 
}

來源

2017-07-18 11:28:55 Babl

覆蓋指向複合鍵的外鍵名稱JPA/Hibernate

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