From 8fe92b94ce5e1e2857d088752d94e19db7e3d8a8 Mon Sep 17 00:00:00 2001 From: Valerio Virgillito Date: Sun, 17 Jun 2012 22:31:44 -0700 Subject: montage v11 merge into ninja Signed-off-by: Valerio Virgillito --- node_modules/montage/data/context.js | 375 ----------------------------------- 1 file changed, 375 deletions(-) delete mode 100755 node_modules/montage/data/context.js (limited to 'node_modules/montage/data/context.js') diff --git a/node_modules/montage/data/context.js b/node_modules/montage/data/context.js deleted file mode 100755 index ca992ff0..00000000 --- a/node_modules/montage/data/context.js +++ /dev/null @@ -1,375 +0,0 @@ -/* - This file contains proprietary software owned by Motorola Mobility, Inc.
- No rights, expressed or implied, whatsoever to this software are provided by Motorola Mobility, Inc. hereunder.
- (c) Copyright 2011 Motorola Mobility, Inc. All Rights Reserved. - */ -/** - @module montage/data/context - @requires montage/core/core - @requires montage/data/store - @requires montage/data/blueprint - @requires montage/data/objectproperty - @requires montage/core/shim/weak-map - @requires montage/core/shim/structures - @requires montage/core/exception - @requires montage/core/promise - @requires montage/core/logger - */ -var Montage = require("montage").Montage; -var Store = require("data/store").Store; -var Blueprint = require("data/blueprint").Blueprint; -var ObjectProperty = require("data/objectproperty").ObjectProperty; -// TODO [June 5 2011 PJYF] This s temporary implementation of WeakMap to let the browser catch up. -var WeakMap = require("core/shim/weak-map").WeakMap; -var Set = require("core/shim/structures").Set; -var Exception = require("core/exception").Exception; -var Promise = require("core/promise").Promise; -var logger = require("core/logger").logger("context"); -/** - @class module:montage/data/context.Context - @extends module:montage/data/store.Store - */ -var Context = exports.Context = Montage.create(Store, /** @lends module:montage/data/context.Context# */ { - /** - Collection of object inserted in this context since the last save. - @private - */ - _inserted: { - value: new Set(50), - serializable: true, - distinct: true, - enumerable: false, - writable: false - }, - /** - Collection of object deleted in this context since the last save. - @private - */ - _deleted: { - value: new Set(50), - serializable: true, - distinct: true, - enumerable: false, - writable: false - }, - /** - Collection of object modified in this context since the last save. - @private - */ - _modified: { - value: new Set(50), - serializable: true, - distinct: true, - enumerable: false, - writable: false - }, - - /** - Table of fetched objects for uniquing. The key is the object ID the value the actual object or the pledge representing it.
- Note: This is a weak map so that the context does not hold on the objects and they can be garbage collected if no one else hold on them. - @private - */ - _objectMap: { - value: new WeakMap(), - serializable: true, - enumerable: false, - writable: false - }, - - /** - Collection of object inserted in this context since the last save. - @function - @returns this._inserted - @default empty set - */ - inserted: { - get: function() { - return this._inserted; - } - }, - - /** - Collection of object deleted in this context since the last save. - @function - @returns this._deleted - @default empty set - */ - deleted: { - get: function() { - return this._deleted; - } - }, - - /** - Collection of object modified in this context since the last save. - @function - @returns this._modified - @default empty set - */ - modified: { - get: function() { - return this._modified; - } - }, - - /** - Description TODO - @function - @param {String} id objectmap - @returns this._objectMap.get(id) | null - */ - objectForId: { - value: function(id) { - if (this._objectMap.has(id)) { - return this._objectMap.get(id); - } - return null; - } - }, - - /** - Inserts a newly created object in the context. - @function - @param {Object} instance TODO - @returns initialized object - */ - insert: { - value: function(instance) { - if (instance !== null) { - if (typeof instance.context === "undefined") { - var metadata = Montage.getInfoForObject(instance); - var blueprint = this.blueprintForPrototype(metadata.objectName, metadata.moduleId); - if (blueprint !== null) { - ObjectProperty.manager.apply(Object.getPrototypeOf(instance), blueprint); - } else { - throw Exception.create().initWithMessageTargetAndMethod("Cannot find blueprint for: " + metadata.objectName + " " + metadata.moduleId, this, "insert"); - } - } - if (instance.context === null) { - instance.context = this; - this._inserted.add(instance); - var self = this; - return this.initializeObject(instance, this).then(function(instance) { - self._objectMap.set(instance.objectId, instance); - return Promise.ref(instance); - }); - } else if (instance.context !== this) { - throw Exception.initWithMessageTargetAndMethod("This instance is already inserted in another context.", this, "insert"); - } - } else { - throw Exception.initWithMessageTargetAndMethod("Cannot insert a null object.", this, "insert"); - } - } - }, - - /** - Delete an object.
- A deleted object will be deleted from the backing store on the next save. - @function - @param {Object} instance TODO - @returns Promise.ref(instance) - */ - 'delete': { - value: function(instance) { - if (instance !== null) { - if ((typeof instance.context === "undefined") || (instance.context === null)) { - return Promise.ref(instance); - } - if (instance.context !== this) { - throw Exception.initWithMessageTargetAndMethod("This instance is belongs to another context.", this, "delete"); - } - if (this._inserted.has(instance)) { - // We are forgetting a newly inserted object - this._inserted.delete(instance); - if (typeof instance.context !== "undefined") { - instance.context = null; - } - } else { - if (this._modified.has(instance)) { - // the object was modified before teh delete forget those. - this._modified.delete(instance); - instance = this._revertValues(instance); - } - this._deleted.add(instance); - } - this._objectMap.delete(instance.objectId); - } else { - throw Exception.initWithMessageTargetAndMethod("Cannot delete a null object.", this, "delete"); - } - return Promise.ref(instance); - } - }, - - /** - Revert an object to its saved values. - @function - @param {Object} instance TODO - @returns Promise.ref(instance) - */ - revert: { - value: function(instance) { - if (instance !== null) { - if (typeof instance.context === "undefined") { - return Promise.ref(instance); - } - if (instance.context !== null) { - if (instance.context !== this) { - throw Exception.initWithMessageTargetAndMethod("This instance is belongs to another context.", this, "revert"); - } - if (this._inserted.has(instance)) { - // This is a newly inserted object, there is no value to revert to, so do nothing. - } else if (this._modified.has(instance)) { - this._modified.delete(instance); - instance = this._revertValues(instance); - } - } else { - // Maybe that object was deleted let retrieve it? - if (this._deleted.has(instance)) { - this._deleted.delete(instance); - instance.context = this; - instance = this._revertValues(instance); - } - } - } else { - throw Exception.initWithMessageTargetAndMethod("Cannot revert a null object.", this, "revert"); - } - return Promise.ref(instance); - } - }, - - /** - Description TODO - @private - */ - _revertValues: { - value: function(instance) { - // TODO [PJYF May 24 2011] We should restore the saved values - return Promise.ref(instance); - } - }, - - /** - Saves all current changes and deletion to the backing store. - @function - */ - save: { - value: function() { - // TODO [PJYF Sept 4 2011] This is probably incomplete - we need to handle the callback - if (this.hasChanges()) { - this.parent.saveChangesInContext(this); - } - } - }, - - /** - This method from the parent store is overwritten to handle the save from the child context. - @function - @param {Property} context The child context - @param {String} transactionID The transaction id - */ - saveChangesInContext$Implementation: { - value: function(context, transactionID) { - if (context === this) { - // If called on it-self then save the context - Store.saveChangesInContext$Implementation.call(this, context, transactionID); - } - // The context has all the changes and we need to merge them with our own. - var inserted = context.inserted; - var deleted = context.deleted; - var modified = context.modified; - - var newUpdated = null; - var removedInserted = null; - - // First create and insert all new objects - inserted.forEach(function(object) { - var gid = object.objectId; - var localObject = this.objectForId(gid); - - if (localObject == null) { - // Insert a copy in our context. - ; - } else { - // Inserting an object already registered in my context? Pretty bogus! Treat it as an update. - ; - // Remove from the inserted list and add it to the updated one. - ; - } - - }); - - // Initialize the property values in these new objects. - - // Copy the values for all updated objects. - - // Delete removed Objects. - - // TODO [PJYF Sept 4 2011] This needs to be reimplemented - - } - }, - - /** - Description TODO - @function - @param {String} attribute TODO - @param {Object} instance TODO - */ - fulfillPropertyForInstance: { - value: function(attribute, instance) { - - } - }, - - /** - Description TODO - @function - @param {String} attribute TODO - @param {Object} instance TODO - */ - willModifyPropertyForInstance: { - value: function(attribute, instance) { - // TODO [PJYF Sep 30 2011] We should probably be smarter. - this._modified.add(instance); - } - }, - - /** - Fetch objects from the backing store. - @function - @param {String} query TODO - @returns Promise.ref(this.parent.queryInContext(query, this)) - */ - query: { - value: function(query) { - // TODO [PJYF Sept 23 2011] This is probably incomplete - we need to handle the refresh - return Promise.ref(this.parent.queryInContext(query, this)); - } - }, - - /** - Reload all objects from the backing store and merges changes in the context with the new values.
- If the target passed is an Array each object will be refreshed. - @function - @param {Object} target The target to be refreshed. - @returns Promise.ref(this.repledgeObject(target, this)) - */ - refresh: { - value: function(target) { - // TODO [PJYF May 10 2011] This is incorrect we need to merge the changes in the refaulted objects - return Promise.ref(this.repledgeObject(target, this)); - } - }, - - /** - Check if there are unsaved changes in the context. - @function - @returns this._inserted.length > 0 or this._modified.length > 0 or this._deleted.length > 0 - */ - hasChanges: { - value: function() { - return this._inserted.length > 0 || this._modified.length > 0 || this._deleted.length > 0; - } - } - -}); -- cgit v1.2.3