88ab129ffb
Also: * _finalizeErase in Zotero.DataObject is now inheritable * Call _initErase before starting a DB transaction * removes Zotero.Libraries.add and Zotero.Libraries.remove (doesn't seem like this is used any more)
110 lines
No EOL
3.1 KiB
JavaScript
110 lines
No EOL
3.1 KiB
JavaScript
/*
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***** BEGIN LICENSE BLOCK *****
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Copyright © 2015 Center for History and New Media
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George Mason University, Fairfax, Virginia, USA
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http://zotero.org
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This file is part of Zotero.
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Zotero is free software: you can redistribute it and/or modify
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it under the terms of the GNU Affero General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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Zotero is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Affero General Public License for more details.
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You should have received a copy of the GNU Affero General Public License
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along with Zotero. If not, see <http://www.gnu.org/licenses/>.
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***** END LICENSE BLOCK *****
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*/
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/*
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* Primary interface for accessing Zotero feed items
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*/
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Zotero.FeedItems = new Proxy(function() {
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let _idCache = {},
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_guidCache = {};
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// Teach Zotero.Items about Zotero.FeedItem
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// This one is a lazy getter, so we don't patch it up until first access
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let zi_primaryDataSQLParts = Object.getOwnPropertyDescriptor(Zotero.Items, '_primaryDataSQLParts').get;
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Zotero.defineProperty(Zotero.Items, '_primaryDataSQLParts', {
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get: function() {
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let obj = zi_primaryDataSQLParts.call(this);
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obj.feedItemGUID = "FeI.guid AS feedItemGUID";
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obj.feedItemReadTime = "FeI.readTime AS feedItemReadTime";
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return obj;
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}
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}, {lazy: true});
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Zotero.Items._primaryDataSQLFrom += " LEFT JOIN feedItems FeI ON (FeI.itemID=O.itemID)";
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let zi_getObjectForRow = Zotero.Items._getObjectForRow;
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Zotero.Items._getObjectForRow = function(row) {
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if (row.feedItemGUID) {
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return new Zotero.FeedItem();
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}
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return zi_getObjectForRow.apply(Zotero.Items, arguments);
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}
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this.getIDFromGUID = Zotero.Promise.coroutine(function* (guid) {
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if (_idCache[guid] !== undefined) return _idCache[guid];
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id = yield Zotero.DB.valueQueryAsync('SELECT itemID FROM feedItems WHERE guid=?', [guid]);
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if (!id) return false;
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this._setGUIDMapping(guid, id);
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return id;
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});
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this._setGUIDMapping = function(guid, id) {
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_idCache[guid] = id;
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_guidCache[id] = guid;
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};
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this._deleteGUIDMapping = function(guid, id) {
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if (!id) id = _idCache[guid];
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if (!guid) guid = _guidCache[id];
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if (!guid || !id) return;
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delete _idCache[guid];
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delete _guidCache[id];
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};
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this.unload = function() {
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Zotero.Items.unload.apply(Zotero.Items, arguments);
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let ids = Zotero.flattenArguments(arguments);
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for (let i=0; i<ids.length; i++) {
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this._deleteGUIDMapping(null, ids[i]);
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}
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};
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this.getAsyncByGUID = Zotero.Promise.coroutine(function* (guid) {
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let id = yield this.getIDFromGUID(guid);
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if (id === false) return false;
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return this.getAsync(id);
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});
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return this;
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}.call({}),
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// Proxy handler
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{
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get: function(target, name) {
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return name in target
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? target[name]
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: Zotero.Items[name];
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},
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has: function(target, name) {
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return name in target || name in Zotero.Items;
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}
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}); |