Fixed calculatition of event stage candidates

java/com.sap.sailing.gwt.ui/src/main/java/com/sap/sailing/gwt/server/EventStageCandidateCalculator.java

@@ -15,7 +15,7 @@ import com.sap.sse.common.impl.MillisecondsTimePoint;
 
 public class EventStageCandidateCalculator implements EventVisitor {
     private final TimePoint now = MillisecondsTimePoint.now();
-    private final SortedSet<Pair<StageEventType, EventHolder>> featuredEvents = new TreeSet<>(FeaturedEventsComparator.INSTANCE);
+    private final SortedSet<Pair<StageEventType, EventHolder>> featuredEvents = new TreeSet<>(new FeaturedEventsComparator());
 
     @Override
     public void visit(EventBase event, boolean onRemoteServer, URL baseURL) {

java/com.sap.sailing.gwt.ui/src/main/java/com/sap/sailing/gwt/server/FeaturedEventsComparator.java

@@ -1,7 +1,11 @@
 package com.sap.sailing.gwt.server;
 
 import java.util.Comparator;
+import java.util.HashMap;
+import java.util.Map;
+import java.util.Random;
 
+import com.sap.sailing.domain.base.EventBase;
 import com.sap.sailing.gwt.ui.shared.start.StageEventType;
 import com.sap.sse.common.TimePoint;
 import com.sap.sse.common.TimeRange;
@@ -10,15 +14,25 @@ import com.sap.sse.common.impl.MillisecondsTimePoint;
 import com.sap.sse.common.impl.TimeRangeImpl;
 
 public class FeaturedEventsComparator implements Comparator<Pair<StageEventType, EventHolder>> {
-    public static final Comparator<Pair<StageEventType, EventHolder>> INSTANCE = new FeaturedEventsComparator();
+
+    private final TimePoint now = MillisecondsTimePoint.now();
+    private final Random randomizer = new Random();
+    private final Map<EventBase, Integer> randomizedEvents = new HashMap<>();
     
     @Override
     public int compare(Pair<StageEventType, EventHolder> eventAndStageType1, Pair<StageEventType, EventHolder> eventAndStageType2) {
-        TimePoint now = MillisecondsTimePoint.now();
-        TimeRange event1Range = new TimeRangeImpl(eventAndStageType1.getB().event.getStartDate(),
-                eventAndStageType1.getB().event.getEndDate());
-        TimeRange event2Range = new TimeRangeImpl(eventAndStageType2.getB().event.getStartDate(),
-                eventAndStageType2.getB().event.getEndDate());
-        return event1Range.timeDifference(now).compareTo(event2Range.timeDifference(now));
+        EventBase event1 = eventAndStageType1.getB().event, event2 = eventAndStageType2.getB().event;
+        TimeRange event1Range = new TimeRangeImpl(event1.getStartDate(), event1.getEndDate());
+        TimeRange event2Range = new TimeRangeImpl(event2.getStartDate(), event2.getEndDate());
+        int timeDiffComp = event1Range.timeDifference(now).compareTo(event2Range.timeDifference(now));
+        return timeDiffComp == 0 ? getRandomValue(event1) - getRandomValue(event2) : timeDiffComp;
+    }
+    
+    private int getRandomValue(EventBase event) {
+        Integer randomValue = randomizedEvents.get(event);
+        if (randomValue == null) {
+            randomizedEvents.put(event, randomValue = randomizer.nextInt());
+        }
+        return randomValue;
     }
 }

java/com.sap.sailing.gwt.ui/src/main/java/com/sap/sailing/gwt/server/HomeServiceImpl.java

@@ -72,13 +72,14 @@ public class HomeServiceImpl extends ProxiedRemoteServiceServlet implements Home
         
         int count = 0;
         for(Pair<StageEventType, EventHolder> pair : stageCandidateCalculator.getFeaturedEvents()) {
+            StageEventType stageType = pair.getA();
+            EventHolder holder = pair.getB();
+
             count++;
-            if(count > MAX_STAGE_EVENTS) {
+            if(count > MAX_STAGE_EVENTS && stageType != StageEventType.RUNNING) {
                 break;
             }
             
-            StageEventType stageType = pair.getA();
-            EventHolder holder = pair.getB();
             result.addStageEvent(HomeServiceUtil.convertToEventStageDTO(holder.event, holder.baseURL, holder.onRemoteServer, stageType, getService(), false));
             
             EventReferenceDTO eventRef = new EventReferenceDTO(holder.event);