gnu-social/plugins/Sample/classes/User_greeting_count.php

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<?php
/**
* Data class for counting greetings
*
* 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) 2009, 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 counting greetings
*
* We use the DB_DataObject framework for data classes in StatusNet. Each
* table maps to a particular data class, making it easier to manipulate
* data.
*
* Data classes should extend Memcached_DataObject, the (slightly misnamed)
* extension of DB_DataObject that provides caching, internationalization,
* and other bits of good functionality to StatusNet-specific data classes.
*
* @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 User_greeting_count extends Managed_DataObject
{
public $__table = 'user_greeting_count'; // table name
public $user_id; // int(4) primary_key not_null
public $greeting_count; // int(4)
public $created; // datetime() not_null
public $modified; // datetime not_null default_0000-00-00%2000%3A00%3A00
public static function schemaDef()
{
return array(
'fields' => array(
'user_id' => array('type' => 'int', 'not null' => true, 'description' => 'user id'),
'greeting_count' => array('type' => 'int', 'not null' => true, 'description' => 'the greeting count'),
'created' => array('type' => 'datetime', 'not null' => true, 'description' => 'date this record was created'),
'modified' => array('type' => 'timestamp', 'not null' => true, 'description' => 'date this record was modified'),
),
'primary key' => array('user_id'),
'foreign keys' => array(
'user_greeting_count_user_id_fkey' => array('user', array('user_id' => 'id')),
),
);
}
/**
* Increment a user's greeting count and return instance
*
* This method handles the ins and outs of creating a new greeting_count for a
* user or fetching the existing greeting count and incrementing its value.
*
* @param integer $user_id ID of the user to get a count for
*
* @return User_greeting_count instance for this user, with count already incremented.
*/
static function inc($user_id)
{
$gc = User_greeting_count::getKV('user_id', $user_id);
if (empty($gc)) {
$gc = new User_greeting_count();
$gc->user_id = $user_id;
$gc->greeting_count = 1;
$result = $gc->insert();
if (!$result) {
// TRANS: Exception thrown when the user greeting count could not be saved in the database.
// TRANS: %d is a user ID (number).
throw Exception(sprintf(_m('Could not save new greeting count for %d.'),
$user_id));
}
} else {
$orig = clone($gc);
$gc->greeting_count++;
$result = $gc->update($orig);
if (!$result) {
// TRANS: Exception thrown when the user greeting count could not be saved in the database.
// TRANS: %d is a user ID (number).
throw Exception(sprintf(_m('Could not increment greeting count for %d.'),
$user_id));
}
}
return $gc;
}
}