Changes in 2e6dc79: bug5959: CourseChangeBasedTrackApproximation objects lazily on demand

				java/com.sap.sailing.domain/src/com/sap/sailing/domain/tracking/impl/TrackedRaceImpl.java
			
          @@ -350,7 +350,7 @@ public abstract class TrackedRaceImpl extends TrackedRaceWithWindEssentials impl

                * maintain state to accelerate the {@link #approximate(Competitor, Distance, TimePoint, TimePoint)} method, also in

                * live scenarios when the contents of the competitors' {@link #tracks} changes dynamically.

                */

          -    private final Map<Competitor, CourseChangeBasedTrackApproximation> maneuverApproximators;

          +    private final ConcurrentMap<Competitor, CourseChangeBasedTrackApproximation> maneuverApproximators;

               private transient ConcurrentMap<TimePoint, Future<Wind>> directionFromStartToNextMarkCache;

          @@ -585,12 +585,11 @@ public abstract class TrackedRaceImpl extends TrackedRaceWithWindEssentials impl

                   }

                   markPassingsForCompetitor = new HashMap<>();

                   tracks = new HashMap<>();

          -        maneuverApproximators = new HashMap<>();

          +        maneuverApproximators = new ConcurrentHashMap<>();

                   for (Competitor competitor : race.getCompetitors()) {

                       markPassingsForCompetitor.put(competitor, new ConcurrentSkipListSet<MarkPassing>(MarkPassingByTimeComparator.INSTANCE));

                       final DynamicGPSFixMovingTrackImpl<Competitor> track = new DynamicGPSFixMovingTrackImpl<Competitor>(competitor, millisecondsOverWhichToAverageSpeed);

                       tracks.put(competitor, track);

          -            maneuverApproximators.put(competitor, new CourseChangeBasedTrackApproximation(track, race.getBoatOfCompetitor(competitor).getBoatClass()));

                   }

                   markPassingsForWaypoint = new ConcurrentHashMap<Waypoint, NavigableSet<MarkPassing>>();

                   for (Waypoint waypoint : race.getCourse().getWaypoints()) {

          @@ -2863,7 +2862,9 @@ public abstract class TrackedRaceImpl extends TrackedRaceWithWindEssentials impl

               @Override

               public Iterable<GPSFixMoving> approximate(Competitor competitor, Distance maxDistance, TimePoint from, TimePoint to) {

          -        return maneuverApproximators.get(competitor).approximate(from, to);

          +        return maneuverApproximators.computeIfAbsent(competitor,

          +                c->new CourseChangeBasedTrackApproximation(getTrack(c), race.getBoatOfCompetitor(c).getBoatClass()))

          +                .approximate(from, to);

               }

               private void ensureManeuverCacheIsFilledForAllCompetitors() {

...	...	@@ -350,7 +350,7 @@ public abstract class TrackedRaceImpl extends TrackedRaceWithWindEssentials impl
350	350	* maintain state to accelerate the {@link #approximate(Competitor, Distance, TimePoint, TimePoint)} method, also in
351	351	* live scenarios when the contents of the competitors' {@link #tracks} changes dynamically.
352	352	*/
353		- private final Map<Competitor, CourseChangeBasedTrackApproximation> maneuverApproximators;
	353	+ private final ConcurrentMap<Competitor, CourseChangeBasedTrackApproximation> maneuverApproximators;
354	354
355	355	private transient ConcurrentMap<TimePoint, Future<Wind>> directionFromStartToNextMarkCache;
356	356
...	...	@@ -585,12 +585,11 @@ public abstract class TrackedRaceImpl extends TrackedRaceWithWindEssentials impl
585	585	}
586	586	markPassingsForCompetitor = new HashMap<>();
587	587	tracks = new HashMap<>();
588		- maneuverApproximators = new HashMap<>();
	588	+ maneuverApproximators = new ConcurrentHashMap<>();
589	589	for (Competitor competitor : race.getCompetitors()) {
590	590	markPassingsForCompetitor.put(competitor, new ConcurrentSkipListSet<MarkPassing>(MarkPassingByTimeComparator.INSTANCE));
591	591	final DynamicGPSFixMovingTrackImpl<Competitor> track = new DynamicGPSFixMovingTrackImpl<Competitor>(competitor, millisecondsOverWhichToAverageSpeed);
592	592	tracks.put(competitor, track);
593		- maneuverApproximators.put(competitor, new CourseChangeBasedTrackApproximation(track, race.getBoatOfCompetitor(competitor).getBoatClass()));
594	593	}
595	594	markPassingsForWaypoint = new ConcurrentHashMap<Waypoint, NavigableSet<MarkPassing>>();
596	595	for (Waypoint waypoint : race.getCourse().getWaypoints()) {
...	...	@@ -2863,7 +2862,9 @@ public abstract class TrackedRaceImpl extends TrackedRaceWithWindEssentials impl
2863	2862
2864	2863	@Override
2865	2864	public Iterable<GPSFixMoving> approximate(Competitor competitor, Distance maxDistance, TimePoint from, TimePoint to) {
2866		- return maneuverApproximators.get(competitor).approximate(from, to);
	2865	+ return maneuverApproximators.computeIfAbsent(competitor,
	2866	+ c->new CourseChangeBasedTrackApproximation(getTrack(c), race.getBoatOfCompetitor(c).getBoatClass()))
	2867	+ .approximate(from, to);
2867	2868	}
2868	2869
2869	2870	private void ensureManeuverCacheIsFilledForAllCompetitors() {