Additional queries in JPA

Question

I have two classes InvitedPerson and Flight with a one to one relationship with each other. Here is how they are annotated.

public clas         


        

Answer 1

You have not set the association from Flight to InvitedTech lazy. So it loads the InvitedTech associated with the flight.

Since it can't know from the InvitedTech if there exist a Hotel and a Flight associated with the InvitedTech, it can't decide if these fields should be null or should be proxies. So it's forced to execute additional queries to know if a hotel/flight exists for the InvitedTech.