Just getting id column value not using join in hibernate object one to many relation

Question

I\'m using hibernate 4+.

I have two sample tables.

Table A

public class A {
  @Id
  private int id;

  @OneToMany(fetch=LAZY)
  private List&         


        

Answer 1

You can define two fields in B, one representing the relationship, and the other just the column:

  @ManyToOne(fetch=LAZY)
  @JoinColumn(name="b_id")
  private A a;

  @Column(name="b_id", updatable=false,insertable=false) //Or correct column
  private int a_id;

This way you can access entity A or just A's id from entity B.