44 lines
1.1 KiB
Dart
44 lines
1.1 KiB
Dart
import 'dart:async';
|
|
import 'package:data_loader/data_loader.dart';
|
|
import 'package:graphql_schema/graphql_schema.dart';
|
|
|
|
external Future<List<Todo>> fetchTodos(Iterable<int> ids);
|
|
|
|
main() async {
|
|
// Create a DataLoader. By default, it caches lookups.
|
|
var todoLoader = DataLoader(fetchTodos); // DataLoader<int, Todo>
|
|
|
|
// type Todo { id: Int, text: String, is_complete: Boolean }
|
|
var todoType = objectType(
|
|
'Todo',
|
|
fields: [
|
|
field('id', graphQLInt),
|
|
field('text', graphQLString),
|
|
field('is_complete', graphQLBoolean),
|
|
],
|
|
);
|
|
|
|
// type Query { todo($id: Int!) Todo }
|
|
// ignore: unused_local_variable
|
|
var schema = graphQLSchema(
|
|
queryType: objectType(
|
|
'Query',
|
|
fields: [
|
|
field(
|
|
'todo',
|
|
listOf(todoType),
|
|
inputs: [GraphQLFieldInput('id', graphQLInt.nonNullable())],
|
|
resolve: (_, args) => todoLoader.load(args['id'] as int),
|
|
),
|
|
],
|
|
),
|
|
);
|
|
|
|
// Do something with your schema...
|
|
}
|
|
|
|
abstract class Todo {
|
|
int get id;
|
|
String get text;
|
|
bool get isComplete;
|
|
}
|