4e69153e3e
git-subtree-dir: packages/graphql git-subtree-mainline:ac29392d7fgit-subtree-split:33e2f86ba7
44 lines
1.1 KiB
Dart
44 lines
1.1 KiB
Dart
import 'dart:async';
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import 'package:data_loader/data_loader.dart';
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import 'package:graphql_schema/graphql_schema.dart';
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external Future<List<Todo>> fetchTodos(Iterable<int> ids);
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main() async {
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// Create a DataLoader. By default, it caches lookups.
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var todoLoader = DataLoader(fetchTodos); // DataLoader<int, Todo>
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// type Todo { id: Int, text: String, is_complete: Boolean }
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var todoType = objectType(
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'Todo',
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fields: [
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field('id', graphQLInt),
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field('text', graphQLString),
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field('is_complete', graphQLBoolean),
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],
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);
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// type Query { todo($id: Int!) Todo }
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// ignore: unused_local_variable
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var schema = graphQLSchema(
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queryType: objectType(
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'Query',
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fields: [
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field(
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'todo',
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listOf(todoType),
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inputs: [GraphQLFieldInput('id', graphQLInt.nonNullable())],
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resolve: (_, args) => todoLoader.load(args['id'] as int),
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),
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],
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),
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);
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// Do something with your schema...
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}
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abstract class Todo {
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int get id;
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String get text;
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bool get isComplete;
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}
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