added a few more domain model abstractions in the form of yet unimplemented interfaces

java/com.sap.sailing.domain/src/com/sap/sailing/domain/base/RaceArea.java

@@ -0,0 +1,14 @@
+package com.sap.sailing.domain.base;
+
+import com.sap.sailing.domain.common.Named;
+
+/**
+ * A named area in a sailing {@link Venue} where races take place. Usually, the areas carry names according to the NATO
+ * alphabet, such as "Alpha", "Bravo" or "Charlie".
+ * 
+ * @author Axel Uhl (D043530)
+ *
+ */
+public interface RaceArea extends Named {
+
+}

java/com.sap.sailing.domain/src/com/sap/sailing/domain/base/Venue.java

@@ -0,0 +1,13 @@
+package com.sap.sailing.domain.base;
+
+import com.sap.sailing.domain.common.Named;
+
+/**
+ * Describes the place where a sailing event with one or more regattas takes place.
+ * 
+ * @author Axel Uhl (D043530)
+ *
+ */
+public interface Venue extends Named {
+    Iterable<RaceArea> getRaceAreas();
+}