public RollupInterval getRollupInterval ( final String interval ) { if ( interval == null || interval . isEmpty ( ) ) { throw new IllegalArgumentException ( "Interval cannot be null or empty" ) ; } final RollupInterval rollup = forward_intervals . get ( interval ) ; if ( rollup == null ) { throw new NoSuchRollupForIntervalException ( interval ) ; } return rollup ; }
Fetches the RollupInterval corresponding to the forward interval string map