update UniqueBorderPartition to support UGGrid

src/amdis/utility/UniqueBorderPartition.hpp

@@ -49,7 +49,7 @@ namespace AMDiS
       , idSet_(grid.globalIdSet())
     {}
 
-    // Communicate all entities except for grid elements
+    // Communicate all entities
     bool contains(int /*dim*/, int /*codim*/) const { return true; }
 
     // communicate exactly one integer, the rank
@@ -74,7 +74,7 @@ namespace AMDiS
     /// Returns whether id is owned by this rank
     bool contains(IdType const& id) const
     {
-      return !(notOwner_.count(id) > 0);
+      return notOwner_.count(id) == 0;
     }
 
     /// Number of iterations to perform the communication in order to collect all neighboring entities
@@ -155,12 +155,13 @@ namespace AMDiS
       , idSet_(grid.localIdSet())
     {}
 
-    // Communicate all entities except for grid elements
+    // Communicate all entities
     bool contains(int /*dim*/, int codim) const { return true; }
 
+    // see size()
     bool fixedSize(int /*dim*/, int codim) const { return codim != 0; }
 
-    // Always contains one int, the rank
+    // for codim=0 elements communicate data for all subEntities, otherwise communicate just the owner rank
     template <class Entity>
     std::size_t size(Entity const& e) const
     {