fix: add modelgen support for granular read ops

packages/appsync-modelgen-plugin/src/__tests__/visitors/__snapshots__/appsync-dart-visitor.test.ts.snap

@@ -2979,6 +2979,225 @@ class _TestModelModelType extends ModelType<TestModel> {
 "
 `;
 
+exports[`AppSync Dart Visitor Granular read operation test should generate correct model file for GraphQL schema with granular read operation 1`] = `
+"/*
+* Copyright 2021 Amazon.com, Inc. or its affiliates. All Rights Reserved.
+*
+* Licensed under the Apache License, Version 2.0 (the \\"License\\").
+* You may not use this file except in compliance with the License.
+* A copy of the License is located at
+*
+*  http://aws.amazon.com/apache2.0
+*
+* or in the \\"license\\" file accompanying this file. This file is distributed
+* on an \\"AS IS\\" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
+* express or implied. See the License for the specific language governing
+* permissions and limitations under the License.
+*/
+
+// NOTE: This file is generated and may not follow lint rules defined in your app
+// Generated files can be excluded from analysis in analysis_options.yaml
+// For more info, see: https://dart.dev/guides/language/analysis-options#excluding-code-from-analysis
+
+// ignore_for_file: public_member_api_docs, annotate_overrides, dead_code, dead_codepublic_member_api_docs, depend_on_referenced_packages, file_names, library_private_types_in_public_api, no_leading_underscores_for_library_prefixes, no_leading_underscores_for_local_identifiers, non_constant_identifier_names, null_check_on_nullable_type_parameter, prefer_adjacent_string_concatenation, prefer_const_constructors, prefer_if_null_operators, prefer_interpolation_to_compose_strings, slash_for_doc_comments, sort_child_properties_last, unnecessary_const, unnecessary_constructor_name, unnecessary_late, unnecessary_new, unnecessary_null_aware_assignments, unnecessary_nullable_for_final_variable_declarations, unnecessary_string_interpolations, use_build_context_synchronously
+
+import 'package:amplify_datastore_plugin_interface/amplify_datastore_plugin_interface.dart';
+import 'package:flutter/foundation.dart';
+
+
+/** This is an auto generated class representing the Todo type in your schema. */
+@immutable
+class Todo extends Model {
+  static const classType = const _TodoModelType();
+  final String id;
+  final String? _name;
+  final TemporalDateTime? _createdAt;
+  final TemporalDateTime? _updatedAt;
+
+  @override
+  getInstanceType() => classType;
+
+  @Deprecated('[getId] is being deprecated in favor of custom primary key feature. Use getter [modelIdentifier] to get model identifier.')
+  @override
+  String getId() => id;
+
+  TodoModelIdentifier get modelIdentifier {
+      return TodoModelIdentifier(
+        id: id
+      );
+  }
+
+  String? get name {
+    return _name;
+  }
+
+  TemporalDateTime? get createdAt {
+    return _createdAt;
+  }
+
+  TemporalDateTime? get updatedAt {
+    return _updatedAt;
+  }
+
+  const Todo._internal({required this.id, name, createdAt, updatedAt}): _name = name, _createdAt = createdAt, _updatedAt = updatedAt;
+
+  factory Todo({String? id, String? name}) {
+    return Todo._internal(
+      id: id == null ? UUID.getUUID() : id,
+      name: name);
+  }
+
+  bool equals(Object other) {
+    return this == other;
+  }
+
+  @override
+  bool operator ==(Object other) {
+    if (identical(other, this)) return true;
+    return other is Todo &&
+      id == other.id &&
+      _name == other._name;
+  }
+
+  @override
+  int get hashCode => toString().hashCode;
+
+  @override
+  String toString() {
+    var buffer = new StringBuffer();
+
+    buffer.write(\\"Todo {\\");
+    buffer.write(\\"id=\\" + \\"$id\\" + \\", \\");
+    buffer.write(\\"name=\\" + \\"$_name\\" + \\", \\");
+    buffer.write(\\"createdAt=\\" + (_createdAt != null ? _createdAt!.format() : \\"null\\") + \\", \\");
+    buffer.write(\\"updatedAt=\\" + (_updatedAt != null ? _updatedAt!.format() : \\"null\\"));
+    buffer.write(\\"}\\");
+
+    return buffer.toString();
+  }
+
+  Todo copyWith({String? name}) {
+    return Todo._internal(
+      id: id,
+      name: name ?? this.name);
+  }
+
+  Todo.fromJson(Map<String, dynamic> json)  
+    : id = json['id'],
+      _name = json['name'],
+      _createdAt = json['createdAt'] != null ? TemporalDateTime.fromString(json['createdAt']) : null,
+      _updatedAt = json['updatedAt'] != null ? TemporalDateTime.fromString(json['updatedAt']) : null;
+
+  Map<String, dynamic> toJson() => {
+    'id': id, 'name': _name, 'createdAt': _createdAt?.format(), 'updatedAt': _updatedAt?.format()
+  };
+
+  Map<String, Object?> toMap() => {
+    'id': id, 'name': _name, 'createdAt': _createdAt, 'updatedAt': _updatedAt
+  };
+
+  static final QueryModelIdentifier<TodoModelIdentifier> MODEL_IDENTIFIER = QueryModelIdentifier<TodoModelIdentifier>();
+  static final QueryField ID = QueryField(fieldName: \\"id\\");
+  static final QueryField NAME = QueryField(fieldName: \\"name\\");
+  static var schema = Model.defineSchema(define: (ModelSchemaDefinition modelSchemaDefinition) {
+    modelSchemaDefinition.name = \\"Todo\\";
+    modelSchemaDefinition.pluralName = \\"Todos\\";
+
+    modelSchemaDefinition.authRules = [
+      AuthRule(
+        authStrategy: AuthStrategy.PUBLIC,
+        operations: [
+          ModelOperation.GET,
+          ModelOperation.LIST,
+          ModelOperation.LISTEN,
+          ModelOperation.SYNC,
+          ModelOperation.SEARCH
+        ])
+    ];
+
+    modelSchemaDefinition.addField(ModelFieldDefinition.id());
+
+    modelSchemaDefinition.addField(ModelFieldDefinition.field(
+      key: Todo.NAME,
+      isRequired: false,
+      ofType: ModelFieldType(ModelFieldTypeEnum.string)
+    ));
+
+    modelSchemaDefinition.addField(ModelFieldDefinition.nonQueryField(
+      fieldName: 'createdAt',
+      isRequired: false,
+      isReadOnly: true,
+      ofType: ModelFieldType(ModelFieldTypeEnum.dateTime)
+    ));
+
+    modelSchemaDefinition.addField(ModelFieldDefinition.nonQueryField(
+      fieldName: 'updatedAt',
+      isRequired: false,
+      isReadOnly: true,
+      ofType: ModelFieldType(ModelFieldTypeEnum.dateTime)
+    ));
+  });
+}
+
+class _TodoModelType extends ModelType<Todo> {
+  const _TodoModelType();
+
+  @override
+  Todo fromJson(Map<String, dynamic> jsonData) {
+    return Todo.fromJson(jsonData);
+  }
+
+  @override
+  String modelName() {
+    return 'Todo';
+  }
+}
+
+/**
+ * This is an auto generated class representing the model identifier
+ * of [Todo] in your schema.
+ */
+@immutable
+class TodoModelIdentifier implements ModelIdentifier<Todo> {
+  final String id;
+
+  /** Create an instance of TodoModelIdentifier using [id] the primary key. */
+  const TodoModelIdentifier({
+    required this.id});
+
+  @override
+  Map<String, dynamic> serializeAsMap() => (<String, dynamic>{
+    'id': id
+  });
+
+  @override
+  List<Map<String, dynamic>> serializeAsList() => serializeAsMap()
+    .entries
+    .map((entry) => (<String, dynamic>{ entry.key: entry.value }))
+    .toList();
+
+  @override
+  String serializeAsString() => serializeAsMap().values.join('#');
+
+  @override
+  String toString() => 'TodoModelIdentifier(id: $id)';
+
+  @override
+  bool operator ==(Object other) {
+    if (identical(this, other)) {
+      return true;
+    }
+
+    return other is TodoModelIdentifier &&
+      id == other.id;
+  }
+
+  @override
+  int get hashCode =>
+    id.hashCode;
+}"
+`;
+
 exports[`AppSync Dart Visitor Many To Many V2 Tests Should generate the intermediate model successfully with nullsafety disabled 1`] = `
 "/*
 * Copyright 2021 Amazon.com, Inc. or its affiliates. All Rights Reserved.