feat: HiveStore

packages/graphql/lib/src/cache/cache.dart

@@ -7,8 +7,9 @@ import 'package:graphql/src/cache/store.dart';
 import 'package:graphql/src/cache/_optimistic_transactions.dart';
 import 'package:normalize/normalize.dart';
 
-export 'package:graphql/src/cache/store.dart';
 export 'package:graphql/src/cache/data_proxy.dart';
+export 'package:graphql/src/cache/store.dart';
+export 'package:graphql/src/cache/hive_store.dart';
 
 class GraphQLCache extends NormalizingDataProxy {
   GraphQLCache({

packages/graphql/lib/src/cache/hive_store.dart

@@ -0,0 +1,44 @@
+import 'package:meta/meta.dart';
+
+import 'package:hive/hive.dart';
+
+import './store.dart';
+
+@immutable
+class HiveStore extends Store {
+  @protected
+  final Box box;
+
+  /// Creates a HiveStore inititalized with [box],
+  /// which defaults to `Hive.box('defaultGraphqlStore')`
+  HiveStore([
+    Box box,
+  ]) : box = box ?? Hive.box('defaultGraphqlStore');
+
+  @override
+  Map<String, dynamic> get(String dataId) {
+    final result = box.get(dataId);
+    if (result == null) return null;
+    return Map.from(result);
+  }
+
+  @override
+  void put(String dataId, Map<String, dynamic> value) {
+    box.put(dataId, value);
+  }
+
+  @override
+  void putAll(Map<String, Map<String, dynamic>> data) {
+    box.putAll(data);
+  }
+
+  @override
+  void delete(String dataId) {
+    box.delete(dataId);
+  }
+
+  @override
+  Map<String, Map<String, dynamic>> toMap() => Map.unmodifiable(box.toMap());
+
+  void reset() => box.clear();
+}

packages/graphql/pubspec.yaml

@@ -21,6 +21,8 @@ dependencies:
   gql_error_link:  ^0.1.1-alpha
   gql_dedupe_link: ^1.0.10
 
+  hive: ^1.3.0
+
   quiver: ">=2.0.0 <3.0.0"
   normalize: ^0.2.0