[Persistence] Add NestedTransaction

platform/commonUI/edit/src/services/NestedTransaction.js

@@ -0,0 +1,38 @@
+/*****************************************************************************
+ * Open MCT, Copyright (c) 2014-2016, United States Government
+ * as represented by the Administrator of the National Aeronautics and Space
+ * Administration. All rights reserved.
+ *
+ * Open MCT is licensed under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * http://www.apache.org/licenses/LICENSE-2.0.
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License 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.
+ *
+ * Open MCT includes source code licensed under additional open source
+ * licenses. See the Open Source Licenses file (LICENSES.md) included with
+ * this source code distribution or the Licensing information page available
+ * at runtime from the About dialog for additional information.
+ *****************************************************************************/
+define(['./Transaction'], function (Transaction) {
+    function NestedTransaction(parent) {
+        this.parent = parent;
+    }
+
+    NestedTransaction.prototype = Object.create(Transaction.prototype);
+
+    NestedTransaction.prototype.commit = function () {
+        parent.add(
+            Transaction.prototype.commit.bind(this),
+            Transaction.prototype.cancel.bind(this)
+        );
+        return Promise.resolve(true);
+    };
+
+    return NestedTransaction;
+});