2010-09-07 17:17:36 +09:00
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<?php
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/**
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* Store last-touched ID for various timelines
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*
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* PHP version 5
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*
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* @category Data
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* @package StatusNet
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* @author Evan Prodromou <evan@status.net>
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* @license http://www.fsf.org/licensing/licenses/agpl.html AGPLv3
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* @link http://status.net/
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*
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* StatusNet - the distributed open-source microblogging tool
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* Copyright (C) 2010, StatusNet, Inc.
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*
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* This program 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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*
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* This program 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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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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if (!defined('STATUSNET')) {
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exit(1);
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}
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require_once INSTALLDIR . '/classes/Memcached_DataObject.php';
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/**
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* Store various timeline data
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*
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* We don't want to keep re-fetching the same statuses and direct messages from Twitter.
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* So, we store the last ID we see from a timeline, and store it. Next time
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* around, we use that ID in the since_id parameter.
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*
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* @category Action
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* @package StatusNet
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* @author Evan Prodromou <evan@status.net>
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* @license http://www.fsf.org/licensing/licenses/agpl.html AGPLv3
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* @link http://status.net/
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*
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* @see DB_DataObject
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*/
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class Twitter_synch_status extends Memcached_DataObject
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{
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public $__table = 'twitter_synch_status'; // table name
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public $user_id; // int(4) primary_key not_null
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public $timeline; // varchar(255) primary_key not_null
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public $last_id; // bigint not_null
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public $created; // datetime not_null
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2010-09-07 17:32:01 +09:00
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public $modified; // datetime not_null
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2010-09-07 17:17:36 +09:00
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/**
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* Get an instance by key
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*
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* @param string $k Key to use to lookup (usually 'user_id' for this class)
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* @param mixed $v Value to lookup
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*
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* @return User_greeting_count object found, or null for no hits
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*
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*/
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function staticGet($k, $v=null)
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{
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return Memcached_DataObject::staticGet('Twitter_synch_status', $k, $v);
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}
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/**
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* return table definition for DB_DataObject
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*
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* DB_DataObject needs to know something about the table to manipulate
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* instances. This method provides all the DB_DataObject needs to know.
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*
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* @return array array of column definitions
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*/
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function table()
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{
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return array('user_id' => DB_DATAOBJECT_INT + DB_DATAOBJECT_NOTNULL,
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2010-09-07 17:35:14 +09:00
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'timeline' => DB_DATAOBJECT_STR + DB_DATAOBJECT_NOTNULL,
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2010-09-07 17:17:36 +09:00
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'last_id' => DB_DATAOBJECT_INT + DB_DATAOBJECT_NOTNULL,
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2010-09-07 17:33:28 +09:00
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'created' => DB_DATAOBJECT_STR + DB_DATAOBJECT_DATE + DB_DATAOBJECT_TIME + DB_DATAOBJECT_NOTNULL,
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2010-09-07 17:32:01 +09:00
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'modified' => DB_DATAOBJECT_STR + DB_DATAOBJECT_DATE + DB_DATAOBJECT_TIME + DB_DATAOBJECT_NOTNULL
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2010-09-07 17:17:36 +09:00
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);
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}
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/**
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* return key definitions for DB_DataObject
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*
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* DB_DataObject needs to know about keys that the table has, since it
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* won't appear in StatusNet's own keys list. In most cases, this will
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* simply reference your keyTypes() function.
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*
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* @return array list of key field names
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*/
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function keys()
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{
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return array_keys($this->keyTypes());
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}
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/**
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* return key definitions for Memcached_DataObject
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*
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* Our caching system uses the same key definitions, but uses a different
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* method to get them. This key information is used to store and clear
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* cached data, so be sure to list any key that will be used for static
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* lookups.
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*
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* @return array associative array of key definitions, field name to type:
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* 'K' for primary key: for compound keys, add an entry for each component;
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* 'U' for unique keys: compound keys are not well supported here.
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*/
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function keyTypes()
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{
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return array('user_id' => 'K',
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'timeline' => 'K');
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}
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/**
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* Magic formula for non-autoincrementing integer primary keys
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*
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* If a table has a single integer column as its primary key, DB_DataObject
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* assumes that the column is auto-incrementing and makes a sequence table
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* to do this incrementation. Since we don't need this for our class, we
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* overload this method and return the magic formula that DB_DataObject needs.
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*
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* @return array magic three-false array that stops auto-incrementing.
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*/
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function sequenceKey()
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{
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return array(false, false, false);
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}
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static function getLastId($user_id, $timeline)
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{
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$tss = self::staticGet(array('user_id' => $user_id,
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'timeline' => $timeline));
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if (empty($tss)) {
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return null;
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} else {
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return $tss->last_id;
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}
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}
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static function setLastId($user_id, $timeline, $last_id)
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{
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$tss = self::staticGet(array('user_id' => $user_id,
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'timeline' => $timeline));
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if (empty($tss)) {
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$tss = new Twitter_synch_status();
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$tss->user_id = $user_id;
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$tss->timeline = $timeline;
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$tss->last_id = $last_id;
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2010-09-07 17:32:01 +09:00
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$tss->created = common_sql_now();
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$tss->modified = $tss->created;
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2010-09-07 17:17:36 +09:00
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$tss->insert();
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return true;
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} else {
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$orig = clone($tss);
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2010-09-07 17:32:01 +09:00
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$tss->last_id = $last_id;
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$tss->modified = common_sql_now();
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2010-09-07 17:17:36 +09:00
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$tss->update();
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return true;
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}
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}
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}
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