this.em = emf.createEntityManager();
if ( escalationHandler != null ) {
this.escalatedDeadlineHandler = escalationHandler;
}
eventSupport = new TaskEventSupport();
eventKeys = new EventKeys();
eventSupport.addEventListener( new MessagingTaskEventListener( eventKeys ) );
scheduler = new ScheduledThreadPoolExecutor( 3 );
long now = System.currentTimeMillis();