休眠無法找到邏輯名稱

Question

我也遇到了這個例外

Caused by: 
org.hibernate.MappingException: Unable to find column with logical name: picture_id in org.hibernate.mapping.Table(TXN_INVENTORY_PICTURE) and its related supertables and secondary tables 
     at org.hibernate.cfg.Ejb3JoinColumn.checkReferencedColumnsType(Ejb3JoinColumn.java:564) 
     at org.hibernate.cfg.BinderHelper.createSyntheticPropertyReference(BinderHelper.java:258) 
     at org.hibernate.cfg.ToOneFkSecondPass.doSecondPass(ToOneFkSecondPass.java:116) 
     at org.hibernate.cfg.Configuration.processEndOfQueue(Configuration.java:1596) 
     at org.hibernate.cfg.Configuration.processFkSecondPassInOrder(Configuration.java:1519) 
     at org.hibernate.cfg.Configuration.secondPassCompile(Configuration.java:1420) 
     at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1844) 
     at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl$4.perform(EntityManagerFactoryBuilderImpl.java:850) 

下面是這些類的要點涉及

@Entity 
@Table(name = "REF_PRODUCT") 
public class Product extends JpaModel{ 

    @Column(name= "NAME") 
    private String name; 

    @Column(name = "MANUFACTURER") 
    private String manufacturer; 

    /** 
    * Work around for missing 
    */ 
    @OneToOne(optional = true) 
    @JoinColumn(name="picture",referencedColumnName = "picture_id") 
    private InventoryItemPicture picture; 
} 

而這裏的inventoryItemPicutre

@Entity 
@Table(name = "TXN_INVENTORY_PICTURE") 
public class InventoryItemPicture extends JpaModel{ 

    @Column 
    private byte[] image; 

    @Column 
    private String fileName; 

    public InventoryItemPicture(){ 

    } 
.... 
} 

而這裏的JPAModel

@MappedSuperclass 
public abstract class JpaModel { 

    @Id 
    @Column(name ="ID", columnDefinition = "serial") 
    @GeneratedValue(strategy = GenerationType.SEQUENCE) 
    private Long id; 

    @Type(type="org.jadira.usertype.dateandtime.joda.PersistentLocalDateTime") 
    @Column(name = "created_date") 
    private DateTime createdDate; 

    public Long getId() { 
     return id; 
    } 

    public void setId(Long id) { 
     this.id = id; 
    } 

    public DateTime getCreatedDate() { 
     return createdDate; 
    } 

    public void setCreatedDate(DateTime createdDate) { 
     this.createdDate = createdDate; 
    } 
} 

注：省略了getter和setter方法，而我想在這裏實現的是該圖片可以在產品類爲空

Answer 1

您的映射錯誤，referencedColumnName目標列picture_id在TXN_INVENTORY_PICTURE表，這是不存在的。

如果picture_id是REF_PRODUCT表中的列是一個外鍵TXN_INVENTORY_PICTURE表的名稱，然後更改映射到這個

@OneToOne(optional = true) 
@JoinColumn(name="picture_id") 
private InventoryItemPicture picture;