How solve javax.persistence.EntityNotFoundException with JPA (not by using @NotFound)

Question

We are using JPA to load some stuff from a database. Some entities may have optional relationships between them, e.g.

@Entity
public class First {
    ....
    @         


        

Answer 1

What about adding a test in the correspondent entity class:

public boolean getHasSecond() {
    if (this.Second != null) {
        return true;
    } else {
        return false;
    }
}

Like this, you can check if the relation exists...