Scala and Quartz DSL

Quartz 2.0 introduces a Domain Specific Language (DSL) for working with the core entities (jobs and triggers).

As a Scala fan boy, this is my first translation of the first sample

implicit def toJobDetail(jb :JobBuilder): JobDetail= jb.build
implicit def toTrigger(tb :TriggerBuilder[org.quartz.Trigger]):Trigger = tb.build

class RichScheduler(s: Scheduler){
 def <-> (job:JobDetail , trigger:Trigger)=  s.scheduleJob(job, trigger)
 def ->> (job:JobDetail , trigger:Trigger)=  {(<-> (job:JobDetail , trigger:Trigger)); +this}
 def unary_+ = s start
 def << =  s shutdown
 def unary_-  = s shutdown true
 }
 implicit def toScheduler (sf:SchedulerFactory):RichScheduler = new RichScheduler(sf.getScheduler())

 val sched = new StdSchedulerFactory()
 val runTime = evenMinuteDate(new Date())
 val job = newJob(classOf[HelloJob]) withIdentity ("job1", "group1")
 val trigger = newTrigger() withIdentity ("trigger1", "group1") startAt runTime

 // ->> or this
 //  sched <-> (job ,  trigger)
 // +sched

 sched ->> (job ,  trigger)
 sleep
 -sched

From http://ouertani.com/2011/05/scala-and-quartz-dsl/