Exit gracefully when data is empty

2013-01-27 23:08:45 +01:00 · 2013-01-27 23:08:45 +01:00 · 0ffa973ec6
commit 0ffa973ec6
parent 03de87c213
1 changed files with 3 additions and 0 deletions
--- a/DataStructures/NNGrid.h
+++ b/DataStructures/NNGrid.h
@ -108,6 +108,9 @@ public:
            int tlon = edge.lon2;
            AddEdge( _GridEdge( edge.id, edge.nameID, edge.weight, _Coordinate(slat, slon), _Coordinate(tlat, tlon), edge.belongsToTinyComponent ) );
        }
+        if( 0 == entries.size() ) {
+        	ERR("No viable edges for nearest neighbor index. Aborting");
+        }
        double timestamp = get_timestamp();
        //create index file on disk, old one is over written
        indexOutFile.open(fileIndexOut, std::ios::out | std::ios::binary | std::ios::trunc);