refs bug 1395

# added LastFlagsFinder and tests. returns all flags with most recent timestamp

java/com.sap.sailing.domain.shared.android/src/com/sap/sailing/domain/racelog/analyzing/impl/LastFlagsFinder.java

@@ -0,0 +1,58 @@
+package com.sap.sailing.domain.racelog.analyzing.impl;
+
+import java.util.ArrayList;
+import java.util.Iterator;
+import java.util.List;
+
+import com.sap.sailing.domain.common.TimePoint;
+import com.sap.sailing.domain.racelog.RaceLog;
+import com.sap.sailing.domain.racelog.RaceLogEvent;
+import com.sap.sailing.domain.racelog.RaceLogFlagEvent;
+
+/**
+ * @author I074137
+ *
+ */
+public class LastFlagsFinder extends RaceLogAnalyzer<List<RaceLogFlagEvent>> {
+
+    public LastFlagsFinder(RaceLog raceLog) {
+        super(raceLog);
+    }
+
+    @Override
+    protected List<RaceLogFlagEvent> performAnalyzation() {
+        
+        Iterator<RaceLogEvent> iterator = getPassEventsDescending().iterator();
+        RaceLogFlagEvent flagEvent = getNextFlagEvent(iterator);
+        if (flagEvent != null) {
+            return collectAllWithSameTimePoint(iterator, flagEvent);
+        }
+        return new ArrayList<RaceLogFlagEvent>();
+    }
+
+    private List<RaceLogFlagEvent> collectAllWithSameTimePoint(Iterator<RaceLogEvent> iterator, RaceLogFlagEvent flagEvent) {
+        List<RaceLogFlagEvent> result = new ArrayList<RaceLogFlagEvent>();
+        TimePoint lastFlagsTime = flagEvent.getTimePoint();
+        
+        while(flagEvent.getTimePoint().equals(lastFlagsTime)) {
+            result.add(flagEvent);
+            flagEvent = getNextFlagEvent(iterator);
+            if (flagEvent == null) {
+                break;
+            }
+        }
+        
+        return result;
+    }
+
+    private RaceLogFlagEvent getNextFlagEvent(Iterator<RaceLogEvent> iterator) {
+        while(iterator.hasNext()) {
+            RaceLogEvent event = iterator.next();
+            if (event instanceof RaceLogFlagEvent) {
+                return (RaceLogFlagEvent)event;
+            }
+        }
+        return null;
+    }
+
+}