Categories: java, spring, jpa

Spring JPA Costum Return Type with Join

1 answer
 public class UserTransfer{     private String u_email;     private String u_password;      public UserTransfer(String u_email,String u_password) {         this.u_email=u_email;         this.u_password=u_password;     }      public String getU_email() {         return u_email;     }      public void setU_email(String u_email) {         this.u_email = u_email;     }      public String getU_password() {         return u_password;     }      public void setU_password(String u_password) {         this.u_password = u_password;     } } 
@Repository public interface UserTransRepositiory extends JpaRepository<UserTransfer, String>  {      @Query(value ="SELECT " + "new paddelec.backend.model.UserTransfer(u.u_email,u.u_password)"             +" FROM tokens t JOIN users u ON t.u_email=u.u_email WHERE t.token= ?1")     UserTransfer findByToken(String Token); }  

This is my Code I try to generate a UserTranfer Object. The regular TokenTransfer and User Repository works just fine. But here I am getting the "java.lang.IllegalArgumentException: Not a managed type: *.UserTransfer" Exception.

All answers to this question, which has the identifier 61224255

The best answer:

UserTransfer must be a JPA entity -> annotate the class with @Entity


@Entity public class UserTransfer{     private String u_email;     private String u_password; 

Moreover don't forget that each entity must have an @Id . Example : if the u_email is the primary key , annotate it with @Id

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