crudrepository findBy method signature for list of tuples

Question

I have an Entity Class like this:

@Entity
@Table(name = \"CUSTOMER\")
class Customer{
    @Id
    @Column(name = \"Id\")
    Long id;
    @Column(name = \"EM         


        

Answer 1

It is maybe cleaner using a projection :

@Entity
@Table(name = "CUSTOMER")
class CustomerQueryData {
    @Id
    @Column(name = "Id")
    Long id;
    @OneToOne
    @JoinColumns(@JoinColumn(name = "emailId"), @JoinColumn(name = "mobile"))
    Contact contact;
}

The Contact Entity :

@Entity
@Table(name = "CUSTOMER")
class Contact{
    @Column(name = "EMAIL_ID")
    String emailId;
    @Column(name = "MOBILE")
    String mobile;
}

After specifying the entities, the repo :

CustomerJpaProjection extends Repository, QueryDslPredicateExecutor {
    @Override
    List findAll(Predicate predicate);
 }

And the repo call :

ArrayList contacts = new ArrayList<>();
contacts.add(new Contact("a@b.c","8971"));
contacts.add(new Contact("e@f.g", "8888"));
customerJpaProjection.findAll(QCustomerQueryData.customerQueryData.contact.in(contacts));

Not tested code.