Update angel_graphql example

angel_graphql/example/main.dart

@@ -8,17 +8,17 @@ import 'package:graphql_server/mirrors.dart';
 import 'package:logging/logging.dart';
 
 main() async {
-  var app = new Angel();
+  var logger = Logger('angel_graphql');
-  var http = new AngelHttp(app);
+  var app = Angel(
-  hierarchicalLoggingEnabled = true;
+      logger: logger
-  app.logger = new Logger('angel_graphql')
         ..onRecord.listen((rec) {
           print(rec);
           if (rec.error != null) print(rec.error);
           if (rec.stackTrace != null) print(rec.stackTrace);
-    });
+        }));
+  var http = AngelHttp(app);
 
-  var todoService = app.use('api/todos', new MapService());
+  var todoService = app.use('api/todos', MapService());
 
   var queryType = objectType(
     'Query',
@@ -34,7 +34,7 @@ main() async {
         convertDartType(Todo),
         resolve: resolveViaServiceRead(todoService),
         inputs: [
-          new GraphQLFieldInput('id', graphQLId.nonNullable()),
+          GraphQLFieldInput('id', graphQLId.nonNullable()),
         ],
       ),
     ],
@@ -56,7 +56,7 @@ main() async {
     mutationType: mutationType,
   );
 
-  app.all('/graphql', graphQLHttp(new GraphQL(schema)));
+  app.all('/graphql', graphQLHttp(GraphQL(schema)));
   app.get('/graphiql', graphiQL());
 
   await todoService
@@ -70,7 +70,7 @@ main() async {
 
   var server = await http.startServer('127.0.0.1', 3000);
   var uri =
-      new Uri(scheme: 'http', host: server.address.address, port: server.port);
+      Uri(scheme: 'http', host: server.address.address, port: server.port);
   var graphiqlUri = uri.replace(path: 'graphiql');
   print('Listening at $uri');
   print('Access graphiql at $graphiqlUri');

graphql_server/lib/graphql_server.dart

@@ -241,8 +241,8 @@ class GraphQL {
           'The grouped field set from this query must have exactly one entry.',
           selectionSet.span);
     var fields = groupedFieldSet.entries.first.value;
-    // TODO: This value is unaffected if an alias is used. (is this true?)
+    var fieldName = fields.first.field.fieldName.alias?.name ??
-    var fieldName = fields.first.field.fieldName.name;
+        fields.first.field.fieldName.name;
     var field = fields.first;
     var argumentValues =
         coerceArgumentValues(subscriptionType, field, variableValues);
@@ -321,7 +321,8 @@ class GraphQL {
       var fields = groupedFieldSet[responseKey];
 
       for (var field in fields) {
-        var fieldName = field.field.fieldName.name;
+        var fieldName =
+            field.field.fieldName.alias?.name ?? field.field.fieldName.name;
         var responseValue;
 
         if (fieldName == '__typename') {
@@ -364,7 +365,7 @@ class GraphQL {
     var argumentValues =
         coerceArgumentValues(objectType, field, variableValues);
     var resolvedValue = await resolveFieldValue(
-        objectType, objectValue, field.field.fieldName.name, argumentValues);
+        objectType, objectValue, fieldName, argumentValues);
     return completeValue(document, fieldName, fieldType, fields, resolvedValue,
         variableValues, globalVariables);
   }
@@ -373,7 +374,8 @@ class GraphQL {
       SelectionContext field, Map<String, dynamic> variableValues) {
     var coercedValues = <String, dynamic>{};
     var argumentValues = field.field.arguments;
-    var fieldName = field.field.fieldName.name;
+    var fieldName =
+        field.field.fieldName.alias?.name ?? field.field.fieldName.name;
     var desiredField = objectType.fields.firstWhere((f) => f.name == fieldName);
     var argumentDefinitions = desiredField.inputs;
 
@@ -621,7 +623,8 @@ class GraphQL {
           false) continue;
 
       if (selection.field != null) {
-        var responseKey = selection.field.fieldName.name;
+        var responseKey = selection.field.fieldName.alias?.alias ??
+            selection.field.fieldName.name;
         var groupForResponseKey =
             groupedFields.putIfAbsent(responseKey, () => []);
         groupForResponseKey.add(selection);