How to write UNION in Doctrine 2.0

Question

How to write this SQL query in Doctrine 2.0 (and fetch results)?

(SELECT \'group\' AS type, 
    CONCAT(u.firstname, \" \", u.surname) as fullname, 
    g.na         


        

Answer 1

Well, I found maybe the best solution:

/**
 * @Entity
 * @InheritanceType("JOINED")
 * @DiscriminatorColumn(name="discr", type="string")
 * @DiscriminatorMap({"group" = "NotificationGroup", "event" = "NotificationEvent"})
 */
class Notification {
   // ...
}

And then two classes (NotificationGroup and NotificationEvent) extending Notification:

/**
 * @Entity
 */
class NotificationGroup extends Notification {
    //...
}

/**
 * @Entity
 */
class NotificationEvent extends Notification {
    //...
}