added missing file

java/com.sap.sailing.domain/src/com/sap/sailing/domain/tracking/RaceTracker.java

@@ -0,0 +1,38 @@
+package com.sap.sailing.domain.tracking;
+
+import java.io.IOException;
+import java.net.MalformedURLException;
+import java.util.Map;
+import java.util.Set;
+
+import com.sap.sailing.domain.base.RaceDefinition;
+
+public interface RaceTracker {
+    /**
+     * Stops tracking the race and removes the {@link TrackedRace} object one gets from calling
+     * {@link #getTrackedEvent()}.{@link TrackedEvent#getTrackedRace(RaceDefinition) getTrackedRace(}{@link #getRaces() getRaces())}
+     * from the {@link #getTrackedEvent() tracked event}.
+     */
+    void stop() throws MalformedURLException, IOException, InterruptedException;
+
+    com.sap.sailing.domain.base.Event getEvent();
+
+    /**
+     * Non-blocking call that returns <code>null</code> if the {@link RaceDefinition} for the TracTrac Event
+     * hasn't been created yet, e.g., because the course definition hasn't been received yet or the listener
+     * for receiving course information hasn't been registered (yet).
+     */
+    Set<RaceDefinition> getRaces();
+
+    RaceHandle getRaceHandle();
+
+    DynamicTrackedEvent getTrackedEvent();
+    
+    WindStore getWindStore();
+
+    /**
+     * returns a unique key for this tracker which can, e.g., be used as a key in a {@link Map}
+     */
+    Object getID();
+    
+}