使用@Transient实体字段HQL映射/联接

Question

I have these entities:

  @Entity
  @Table(name = "my_table")
  public class MyTable implements Serializable {

     @Id
     @Column(name = "RECORD_ID")
     private Long recordId;

     @Column(name = "CNAME")
     private String changeName;

     @Transient
     MyTableTwo tableTwo;

     //getters and setters
 }

MyTableTwo entity:

  @Entity
  @Table(name = "my_table_two")
  public class MyTableTwo implements Serializable {

     @Id
     @Column(name = "REC_ID")
     private Long recId;

     @Column(name = "CNAME")
     private String changeName;

     @Column(name = "CVAL")
     private String changeValue;

     //getters and setters
 }

I want to get my_table.record_id . 'my_table.cname', 'my_table_two.cval' in a result. How to write a query on these two entities?

Can we write a join query with first entity and @transient entity field of 2nd entity?

I need to write HQL

Answer 1

您可以像这样进行交叉连接

select a,b from MyTable a,MyTableTwo b where a.prop1 = b.prop2