JPA: default column name mapping for @ManyToOne relations

Question

When we have a class:

@Entity Order implements Serializable {     @Id     private Integer id;     ... } 

and:

@Entity OrderLine implements Serializable {     @Id     private Integer id;      @ManyToOne     Order order;     ... } 

What row name will the property order map to?

order_id, ORDER_ID or Order_id?

(ommiting the @JoinColumn(name='order_id') is deliberate)

Answer 1

I might not understand your question. However, don't you need something like below?

@ManyToOne(fetch=FetchType.LAZY) @JoinColumn(name="order_id", nullable=false) Order order; 

here are some examples