Allow node resolvers to be inferred from quer fields. (#5350)

.gitignore

@@ -321,4 +321,5 @@ conferences.db
 conferences.db-shm
 conferences.db-wal
 
-.server/
+.server/
+.nuke/

src/.vscode/settings.json → .vscode/settings.json

@@ -5,5 +5,5 @@
     "**/*.code-search": true,
     "**/PublicAPI*.txt": true
   },
-  "editor.rulers": [100]
+  "editor.rulers": [100],
 }

src/.vscode/tasks.json → .vscode/tasks.json

@@ -9,7 +9,7 @@
             "type": "shell",
             "args": [
                 "build",
-                "All.sln",
+                "src/All.sln",
                 // Ask dotnet build to generate full paths for file names.
                 "/property:GenerateFullPaths=true",
                 // Do not generate summary otherwise it leads to duplicate errors in Problems panel

src/HotChocolate/ApolloFederation/src/ApolloFederation/Helpers/EntitiesResolver.cs

@@ -31,10 +31,14 @@ internal static class EntitiesResolver
                     objectType.ContextData.TryGetValue(EntityResolver, out var value) &&
                     value is FieldResolverDelegate resolver)
                 {
-                    context.SetLocalState(TypeField, objectType);
-                    context.SetLocalState(DataField, current.Data);
+                    // We clone the resolver context here so that we can split the work
+                    // into sub tasks that can be awaited in parallel and produce separate results.
+                    var entityContext = context.Clone();
 
-                    tasks[i] = resolver.Invoke(new ResolverContextProxy(context)).AsTask();
+                    entityContext.SetLocalState(TypeField, objectType);
+                    entityContext.SetLocalState(DataField, current.Data);
+
+                    tasks[i] = resolver.Invoke(entityContext).AsTask();
                 }
                 else
                 {

src/HotChocolate/ApolloFederation/test/ApolloFederation.Tests/EntitiesResolverTests.cs

@@ -88,8 +88,7 @@ public async void TestResolveViaEntityResolver()
         };
 
         // assert
-        var result =
-            await EntitiesResolver.ResolveAsync(schema, representations, context);
+        var result = await EntitiesResolver.ResolveAsync(schema, representations, context);
         var obj = Assert.IsType<TypeWithReferenceResolver>(result[0]);
         Assert.Equal("1", obj.Id);
         Assert.Equal("SomeField", obj.SomeField);

src/HotChocolate/ApolloFederation/test/ApolloFederation.Tests/TestHelper.cs

@@ -22,6 +22,7 @@ public static IResolverContext CreateResolverContext(
         mock.SetupGet(c => c.ContextData).Returns(contextData);
         mock.SetupProperty(c => c.ScopedContextData);
         mock.SetupProperty(c => c.LocalContextData);
+        mock.Setup(c => c.Clone()).Returns(mock.Object);
         mock.SetupGet(c => c.Schema).Returns(schema);
 
         if (type is not null)