Hibernate沒有使用@JoinTable的名稱參數

Question

我有一個小問題，我有一個超類定義一個實體到PostgreSQL中的根表。

這個類有2個繼承表/類實體，在這裏我想添加一個@OneToOne連接表的關聯：

@Entity 
@Inheritance(strategy = InheritanceType.TABLE_PER_CLASS) 
@Table(name = "equipement") 
public abstract class Equipement 
{ 
    .... 
} 

@Entity 
@Table(name = "nod") 
public class Nod extends Equipement 
{ 
    protected Cross cross; 

    @OneToOne(cascade = CascadeType.ALL, optional = true, fetch = FetchType.EAGER) 
    @JoinTable(name = "assoc_nod_cross", joinColumns = @JoinColumn(name = "nod_id", referencedColumnName = "id"), inverseJoinColumns = @JoinColumn(name = "cross_id", referencedColumnName = "id")) 
    public Cross getCross() 
    { 
     return cross; 
    } 

    ... 
} 

@Entity 
@Table(name = "cross") 
public class Cross extends Equipement 
{ 
    protected Nod nod; 

    @OneToOne(cascade = CascadeType.ALL, optional = true, fetch = FetchType.EAGER) 
    @JoinTable(name = "assoc_nod_cross", joinColumns = @JoinColumn(name = "cross_id", referencedColumnName = "id"), inverseJoinColumns = @JoinColumn(name = "nod_id", referencedColumnName = "id")) 
    public Nod getNod() 
    { 
     return nod; 
    } 

    ... 
} 

當列表中的所有點頭或交叉實體，休眠要搜索在該inverseJoinColumns場錯誤的表，它不使用名稱（assoc_nod_cross），我什至可以放任何東西。

樣品：

Hibernate: select cross0_.id as id1_7_, cross0_.nod_id as nod_id2_1_ from cross cross0_ 

javax.persistence.PersistenceException: org.hibernate.exception.SQLGrammarException: could not extract ResultSet 
... 
Caused by: org.postgresql.util.PSQLException: ERROR: column cross0_.node_id does not exist 

是不是因爲@Inheritance戰略的問題？它是休眠的bug嗎？這是我的實體定義中的問題嗎？

增加的信息：我試着切換到EclipseLink來檢查它是否是一個休眠錯誤/限制，或者如果我在某處錯了。 EclipseLink工作良好。

Answer 1

這是Cross和Nod之間的雙向關係嗎？如果是這樣，你不必用這種方式來註釋關係的兩邊。這可能會導致混淆休眠。 Here是它工作的一個例子。我認爲這應該這樣做

@Entity 
@Table(name = "nod") 
public class Nod extends Equipement 
{ 
    protected Cross cross; 

    @OneToOne(cascade = CascadeType.ALL, optional = true, fetch = FetchType.EAGER) 
    @JoinTable(name = "assoc_nod_cross", joinColumns = @JoinColumn(name = "nod_id", referencedColumnName = "id"), inverseJoinColumns = @JoinColumn(name = "cross_id", referencedColumnName = "id")) 
    public Cross getCross() 
    { 
     return cross; 
    } 

    ... 
} 

@Entity 
@Table(name = "cross") 
public class Cross extends Equipement 
{ 
    protected Nod nod; 

    @OneToOne(mappedBy = "cross") 
    public Nod getNod() 
    { 
     return nod; 
    } 

    ... 
}