Spring Data procedure invocation - stored-procedures

Question

I have a procedure, which returns rows.
Each row has one column, which is a string, like so..
create procedure myproc(IN var1 varchar(255), IN var2 varchar(255))
begin
select col3 from table1 where col1 = var1 and col2 = val2;
end;
/
I want to invoke this procedure using Spring Data.
The Spring Data manual says, I could invoke this procedure
from a method in a Repository, which is annotated with #Procedure
like so..
#Procedure(procedureName = "myproc")
List<String> myproc(String val1, String val2);
My question is.. how should the repository class, which will contain the annotated method,
be declared as
Should it be like this..
class MyRepository extends JpaRepository<T,ID>{
}
If yes, what type parameter should I use for T and ID
Should I necessarily create an entity class, to replace T above
If yes, what is a suitable type for ID in this case
And would I have to create a table in the database to hold this entity?

Answer 1

Spring data jpa follows the 'domain driven design'.
So I think it is mandatory to pass Domain.
Your domain is like
#Entity
public class Person {
#Id
#GeneratedValue
private Long id;
.... getter setter...
}
Your repository should be like below
public interface PersonRepository extends JpaRepository<Person, Long> {
#Procedure(procedureName = "myproc")
List<String> myproc(String val1, String val2);
}
You need to pass your domain class as T
You need to pass data type of id field of Person class as a ID, In this case it's a Long
For more info by example https://dzone.com/articles/calling-stored-procedures-from-spring-data-jpa