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<?php
/**
* Data class for remembering notice-to-status mappings
*
* PHP version 5
*
* @category Data
* @package StatusNet
* @author Evan Prodromou <evan@status.net>
* @license http://www.fsf.org/licensing/licenses/agpl.html AGPLv3
* @link http://status.net/
*
* StatusNet - the distributed open-source microblogging tool
* Copyright (C) 2010, StatusNet, Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
if (!defined('STATUSNET')) {
exit(1);
}
require_once INSTALLDIR . '/classes/Memcached_DataObject.php';
/**
* Data class for mapping notices to statuses
*
* Notices flow back and forth between Twitter and StatusNet. We use this
* table to remember which StatusNet notice corresponds to which Twitter
* status.
*
* Note that notice_id is unique only within a single database; if you
* want to share this data for some reason, get the notice's URI and use
* that instead, since it's universally unique.
*
* @category Action
* @package StatusNet
* @author Evan Prodromou <evan@status.net>
* @license http://www.fsf.org/licensing/licenses/agpl.html AGPLv3
* @link http://status.net/
*
* @see DB_DataObject
*/
class Notice_to_status extends Memcached_DataObject
{
public $__table = 'notice_to_status'; // table name
public $notice_id; // int(4) primary_key not_null
public $status_id; // int(4)
public $created; // datetime
/**
* Get an instance by key
*
* This is a utility method to get a single instance with a given key value.
*
* @param string $k Key to use to lookup
* @param mixed $v Value to lookup
*
* @return Notice_to_status object found, or null for no hits
*
*/
function staticGet($k, $v=null)
{
return Memcached_DataObject::staticGet('Notice_to_status', $k, $v);
}
/**
* return table definition for DB_DataObject
*
* DB_DataObject needs to know something about the table to manipulate
* instances. This method provides all the DB_DataObject needs to know.
*
* @return array array of column definitions
*/
function table()
{
return array('notice_id' => DB_DATAOBJECT_INT + DB_DATAOBJECT_NOTNULL,
'status_id' => DB_DATAOBJECT_INT + DB_DATAOBJECT_NOTNULL,
'created' => DB_DATAOBJECT_STR + DB_DATAOBJECT_DATE + DB_DATAOBJECT_TIME + DB_DATAOBJECT_NOTNULL);
}
/**
* return key definitions for DB_DataObject
*
* DB_DataObject needs to know about keys that the table has, since it
* won't appear in StatusNet's own keys list. In most cases, this will
* simply reference your keyTypes() function.
*
* @return array list of key field names
*/
function keys()
{
return array_keys($this->keyTypes());
}
/**
* return key definitions for Memcached_DataObject
*
* Our caching system uses the same key definitions, but uses a different
* method to get them. This key information is used to store and clear
* cached data, so be sure to list any key that will be used for static
* lookups.
*
* @return array associative array of key definitions, field name to type:
* 'K' for primary key: for compound keys, add an entry for each component;
* 'U' for unique keys: compound keys are not well supported here.
*/
function keyTypes()
{
return array('notice_id' => 'K', 'status_id' => 'U');
}
/**
* Magic formula for non-autoincrementing integer primary keys
*
* If a table has a single integer column as its primary key, DB_DataObject
* assumes that the column is auto-incrementing and makes a sequence table
* to do this incrementation. Since we don't need this for our class, we
* overload this method and return the magic formula that DB_DataObject needs.
*
* @return array magic three-false array that stops auto-incrementing.
*/
function sequenceKey()
{
return array(false, false, false);
}
/**
* Save a mapping between a notice and a status
*
* @param integer $notice_id ID of the notice in StatusNet
* @param integer $status_id ID of the status in Twitter
*
* @return Notice_to_status new object for this value
*/
static function saveNew($notice_id, $status_id)
{
$n2s = Notice_to_status::staticGet('notice_id', $notice_id);
if (!empty($n2s)) {
return $n2s;
}
$n2s = Notice_to_status::staticGet('status_id', $status_id);
if (!empty($n2s)) {
return $n2s;
}
common_debug("Mapping notice {$notice_id} to Twitter status {$status_id}");
$n2s = new Notice_to_status();
$n2s->notice_id = $notice_id;
$n2s->status_id = $status_id;
$n2s->created = common_sql_now();
$n2s->insert();
return $n2s;
}
}
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