#1427 - QueryCache should be cleared, if one of a dependent bean is updated

Initial work, does not include propagation across cluster.

src/main/java/io/ebeaninternal/server/query/CQueryFetchSingleAttribute.java

@@ -17,6 +17,7 @@ import java.sql.PreparedStatement;
 import java.sql.SQLException;
 import java.util.ArrayList;
 import java.util.List;
+import java.util.Set;
 
 /**
  * Base compiled query request for single attribute queries.
@@ -188,4 +189,8 @@ class CQueryFetchSingleAttribute implements SpiProfileTransactionEvent {
       .profileStream()
       .addQueryEvent(query.profileEventId(), profileOffset, desc.getProfileId(), rowCount, query.getProfileId());
   }
+
+  Set<String> getDependentTables() {
+    return queryPlan.getDependentTables();
+  }
 }