Hi all,

I have two classes

class Event {

      static belongsTo = [service: Service]

Integer siEventId

      static constraints = {

siEventId(unique: true)

      }

}

And

class Service {

      static hasMany = [events: Event]

      Integer siServiceId

static constraints = {

            siServiceId(unique: true)         

events(nullable: true)

      }

}

I am trying to check if – for a specific object serviceInstance – I already have an Event with an Integer eventId.

I tried to do the following…

def eventInstance = Event.findAllByServiceAndSiEventId( serviceInstance, eventId )

But it seems not to be the right one… eventInstance is always null. Any suggestions?