#75 Polyline to Polyline Adapter crashes if followed by Copy to File Adapter

[John Barnes]

See the attached screenshot PolylineAdapter4.PNG for the scenario.

See the attached screenshot PolylineAdapter5.PNG for the crash. The _mapping map is empty because Consumers was empty when PrepareIt() function for the adapter was called.

[John Barnes]

Add second attachment.

[John Barnes]

These changes were made to fix this problem:

@@ -146,9 +146,12 @@ namespace FluidEarth2.AdaptedOutputs

             _mapping.Clear();


-            foreach (var consumer in Consumers)
+            var consumers = Consumers.Select(c => new Tuple<IBaseExchangeItem, IBaseInput>(c, c));
+            var adaptedOutputs = AdaptedOutputs.Select(a => a.Consumers.Select(c => new Tuple<IBaseExchangeItem,     IBaseInput>(a, c))).SelectMany(c => c);
+
+            foreach (var consumer in consumers.Concat(adaptedOutputs))
             {
-                var adaptedElementSet = Utilities.AsElementSet(consumer);
+                var adaptedElementSet = Utilities.AsElementSet(consumer.Item2);

                 Contract.Requires(adaptedElementSet != null,
                     "adaptedElementSet != null");
@@ -206,7 +209,7 @@ namespace FluidEarth2.AdaptedOutputs

                 Trace.TraceInformation(MappingToString(map));


-                _mapping.Add(consumer, map);
+                _mapping.Add(consumer.Item1, map);
             }
         }

Comments on the validity of these changes would be welcome.