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/*****************************************************************************
* Open MCT, Copyright (c) 2014-2022, 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.
*****************************************************************************/
export default class Transaction {
constructor(objectAPI) {
this.dirtyObjects = {};
this.objectAPI = objectAPI;
}
add(object) {
const key = this.objectAPI.makeKeyString(object.identifier);
this.dirtyObjects[key] = object;
}
cancel() {
return this._clear();
}
commit() {
const promiseArray = [];
const save = this.objectAPI.save.bind(this.objectAPI);
Object.values(this.dirtyObjects).forEach(object => {
promiseArray.push(this.createDirtyObjectPromise(object, save));
});
return Promise.all(promiseArray);
}
createDirtyObjectPromise(object, action) {
return new Promise((resolve, reject) => {
action(object)
.then((success) => {
const key = this.objectAPI.makeKeyString(object.identifier);
delete this.dirtyObjects[key];
resolve(success);
})
.catch(reject);
});
}
getDirtyObject(identifier) {
let dirtyObject;
Object.values(this.dirtyObjects).forEach(object => {
const areIdsEqual = this.objectAPI.areIdsEqual(object.identifier, identifier);
if (areIdsEqual) {
dirtyObject = object;
}
});
return dirtyObject;
}
_clear() {
const promiseArray = [];
const refresh = this.objectAPI.refresh.bind(this.objectAPI);
Object.values(this.dirtyObjects).forEach(object => {
promiseArray.push(this.createDirtyObjectPromise(object, refresh));
});
return Promise.all(promiseArray);
}
}
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