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108 lines
4.4 KiB
JavaScript
108 lines
4.4 KiB
JavaScript
/*****************************************************************************
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* Open MCT Web, Copyright (c) 2014-2015, United States Government
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* as represented by the Administrator of the National Aeronautics and Space
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* Administration. All rights reserved.
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*
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* Open MCT Web is licensed under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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* http://www.apache.org/licenses/LICENSE-2.0.
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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* Open MCT Web includes source code licensed under additional open source
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* licenses. See the Open Source Licenses file (LICENSES.md) included with
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* this source code distribution or the Licensing information page available
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* at runtime from the About dialog for additional information.
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*****************************************************************************/
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/**
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* Module defining CreateService. Created by vwoeltje on 11/10/14.
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*/
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define(
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[],
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function () {
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var NON_PERSISTENT_WARNING =
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"Tried to create an object in non-persistent container.";
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/**
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* The creation service is responsible for instantiating and
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* persisting new domain objects. Handles all actual object
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* mutation and persistence associated with domain object
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* creation.
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* @memberof platform/commonUI/browse
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* @constructor
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*/
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function CreationService($q, $log) {
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this.$q = $q;
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this.$log = $log;
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}
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/**
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* Create a new domain object with the provided model, as
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* a member of the provided parent domain object's composition.
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* This parent will additionally determine which persistence
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* space an object is created within (as it is possible to
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* have multiple persistence spaces attached.)
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*
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* Note that the model passed in for object creation may be
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* modified to attach additional initial properties associated
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* with domain object creation.
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*
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* @param {object} model the model for the newly-created
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* domain object
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* @param {DomainObject} parent the domain object which
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* should contain the newly-created domain object
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* in its composition
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* @return {Promise} a promise that will resolve when the domain
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* object has been created
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*/
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CreationService.prototype.createObject = function (model, parent) {
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var persistence = parent.getCapability("persistence"),
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newObject = parent.useCapability("instantiation", model),
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newObjectPersistence = newObject.getCapability("persistence"),
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self = this;
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// Add the newly-created object's id to the parent's
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// composition, so that it will subsequently appear
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// as a child contained by that parent.
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function addToComposition() {
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var compositionCapability = parent.getCapability('composition'),
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addResult = compositionCapability &&
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compositionCapability.add(newObject);
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return self.$q.when(addResult).then(function (result) {
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if (!result) {
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self.$log.error("Could not modify " + parent.getId());
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return undefined;
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}
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return persistence.persist().then(function () {
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return result;
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});
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});
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}
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// We need the parent's persistence capability to determine
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// what space to create the new object's model in.
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if (!persistence || !newObjectPersistence) {
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self.$log.warn(NON_PERSISTENT_WARNING);
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return self.$q.reject(new Error(NON_PERSISTENT_WARNING));
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}
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// Persist the new object, then add it to composition.
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return newObjectPersistence.persist().then(addToComposition);
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};
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return CreationService;
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}
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);
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