/home/edulekha/studygroup.edulekha.com/ow_system_plugins/base/bol/rate_dao.php
<?php
/**
* EXHIBIT A. Common Public Attribution License Version 1.0
* The contents of this file are subject to the Common Public Attribution License Version 1.0 (the “License”);
* you may not use this file except in compliance with the License. You may obtain a copy of the License at
* http://www.oxwall.org/license. The License is based on the Mozilla Public License Version 1.1
* but Sections 14 and 15 have been added to cover use of software over a computer network and provide for
* limited attribution for the Original Developer. In addition, Exhibit A has been modified to be consistent
* with Exhibit B. Software distributed under the License is distributed on an “AS IS” basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License for the specific language
* governing rights and limitations under the License. The Original Code is Oxwall software.
* The Initial Developer of the Original Code is Oxwall Foundation (http://www.oxwall.org/foundation).
* All portions of the code written by Oxwall Foundation are Copyright (c) 2011. All Rights Reserved.
* EXHIBIT B. Attribution Information
* Attribution Copyright Notice: Copyright 2011 Oxwall Foundation. All rights reserved.
* Attribution Phrase (not exceeding 10 words): Powered by Oxwall community software
* Attribution URL: http://www.oxwall.org/
* Graphic Image as provided in the Covered Code.
* Display of Attribution Information is required in Larger Works which are defined in the CPAL as a work
* which combines Covered Code or portions thereof with code not governed by the terms of the CPAL.
*/
/**
* Data Access Object for `base_rate` table.
*
* @author Sardar Madumarov <madumarov@gmail.com>
* @package ow_system_plugins.base.bol
* @since 1.0
*/
class BOL_RateDao extends OW_BaseDao
{
const ENTITY_ID = 'entityId';
const ENTITY_TYPE = 'entityType';
const USER_ID = 'userId';
const SCORE = 'score';
const UPDATE_TIME_STAMP = 'timeStamp';
const ACTIVE = 'active';
/**
* Singleton instance.
*
* @var BOL_RateDao
*/
private static $classInstance;
/**
* Returns an instance of class (singleton pattern implementation).
*
* @return BOL_RateDao
*/
public static function getInstance()
{
if ( self::$classInstance === null )
{
self::$classInstance = new self();
}
return self::$classInstance;
}
/**
* Constructor.
*/
protected function __construct()
{
parent::__construct();
}
/**
* @see OW_BaseDao::getDtoClassName()
*
*/
public function getDtoClassName()
{
return 'BOL_Rate';
}
/**
* @see OW_BaseDao::getTableName()
*
*/
public function getTableName()
{
return OW_DB_PREFIX . 'base_rate';
}
/**
* Returns rate item for provided entity id, entity type and user id.
*
* @param integer $entityId
* @param string $entityType
* @param integer $userId
* @return BOL_Rate
*/
public function findRate( $entityId, $entityType, $userId )
{
$example = new OW_Example();
$example->andFieldEqual(self::ENTITY_ID, $entityId);
$example->andFieldEqual(self::ENTITY_TYPE, $entityType);
$example->andFieldEqual(self::USER_ID, $userId);
return $this->findObjectByExample($example);
}
/**
* Returns entity item rate info.
*
* @param integer $entityId
* @param string $entityType
* @return array
*/
public function findEntityItemRateInfo( $entityId, $entityType )
{
return $this->dbo->queryForRow("SELECT COUNT(*) as `rates_count`, AVG(`score`) as `avg_score`
FROM " . $this->getTableName() . " WHERE `entityId` = :entityId AND `entityType` = :entityType
GROUP BY `entityId`", array('entityId' => $entityId, 'entityType' => $entityType));
}
/**
* Returns rate info for list of entities.
*
* @param array $entityIds
* @param string $entityType
*/
public function findRateInfoForEntityList( $entityType, $entityIdList )
{
if ( empty($entityIdList) )
{
return array();
}
$query = "SELECT COUNT(*) as `rates_count`, AVG(`score`) as `avg_score`, `" . self::ENTITY_ID . "`
FROM " . $this->getTableName() . " WHERE `" . self::ENTITY_TYPE . "` = :entityType AND `" . self::ENTITY_ID . "` IN (" . $this->dbo->mergeInClause($entityIdList) . ")
GROUP BY `entityId`";
return $this->dbo->queryForList($query, array('entityType' => $entityType));
}
public function findMostRatedEntityList( $entityType, $first, $count, $exclude )
{
$queryParts = BOL_ContentService::getInstance()->getQueryFilter(array(
BASE_CLASS_QueryBuilderEvent::TABLE_USER => 'r',
BASE_CLASS_QueryBuilderEvent::TABLE_CONTENT => 'r'
), array(
BASE_CLASS_QueryBuilderEvent::FIELD_USER_ID => 'userId',
BASE_CLASS_QueryBuilderEvent::FIELD_CONTENT_ID => 'id'
), array(
BASE_CLASS_QueryBuilderEvent::OPTION_METHOD => __METHOD__,
BASE_CLASS_QueryBuilderEvent::OPTION_TYPE => $entityType
));
$excludeCond = $exclude ? ' AND `' . self::ENTITY_ID . '` NOT IN (' . $this->dbo->mergeInClause($exclude) . ')' : '';
$query = 'SELECT `r`.`' . self::ENTITY_ID . '` AS `id`, COUNT(*) as `ratesCount`, AVG(`r`.`score`) as `avgScore`
FROM `' . $this->getTableName() . '` AS `r`
' . $queryParts['join'] . '
WHERE `r`.`' . self::ENTITY_TYPE . '` = :entityType AND `r`.`' . self::ACTIVE . '` = 1 ' . $excludeCond . ' AND ' . $queryParts['where'] . '
GROUP BY `r`.`' . self::ENTITY_ID . '`
ORDER BY `avgScore` DESC, `ratesCount` DESC, MAX(`r`.`timeStamp`) DESC
LIMIT :first, :count';
$boundParams = array_merge(array('entityType' => $entityType, 'first' => (int) $first, 'count' => (int) $count), $queryParts['params']);
return $this->dbo->queryForList($query, $boundParams);
}
public function findMostRatedEntityCount( $entityType, $exclude )
{
$excludeCond = $exclude ? ' AND `' . self::ENTITY_ID . '` NOT IN (' . $this->dbo->mergeInClause($exclude) . ')' : '';
$query = "SELECT COUNT(DISTINCT `" . self::ENTITY_ID . "`) from `" . $this->getTableName() .
"` WHERE `" . self::ENTITY_TYPE . "` = :entityType AND `" . self::ACTIVE . "` = 1" . $excludeCond;
return (int) $this->dbo->queryForColumn($query, array('entityType' => $entityType));
}
public function updateEntityStatus( $entityType, $entityId, $status )
{
$query = "UPDATE `" . $this->getTableName() . "` SET `" . self::ACTIVE . "` = :status
WHERE `" . self::ENTITY_TYPE . "` = :entityType AND `" . self::ENTITY_ID . "` = :entityId";
$this->dbo->query($query, array('status' => $status, 'entityType' => $entityType, 'entityId' => $entityId));
}
/**
* Deletes rate entries for provided params.
*
* @param integer $entityId
* @param string $entityType
*/
public function deleteEntityItemRates( $entityId, $entityType )
{
$example = new OW_Example();
$example->andFieldEqual(self::ENTITY_ID, (int) $entityId);
$example->andFieldEqual(self::ENTITY_TYPE, trim($entityType));
$this->deleteByExample($example);
}
/**
* Deletes rate entries for provided params.
*
* @param $userId
*/
public function deleteUserRates( $userId )
{
$example = new OW_Example();
$example->andFieldEqual(self::USER_ID, (int) $userId);
$this->deleteByExample($example);
}
public function deleteByEntityType( $entityType )
{
$example = new OW_Example();
$example->andFieldEqual(self::ENTITY_TYPE, trim($entityType));
$this->deleteByExample($example);
}
public function findUserScore( $userId, $entityType, array $entityIdList )
{
if ( count($entityIdList) === 0 )
{
return array();
}
$sql = 'SELECT `' . self::ENTITY_ID . '`, `' . self::SCORE . '`
FROM `' . $this->getTableName() . '`
WHERE `' . self::USER_ID . '` = :userId AND
`' . self::ENTITY_TYPE . '` = :entityType AND
`' . self::ENTITY_ID . '` IN(' . implode(',', array_map('intval', array_unique($entityIdList))) . ')';
return $this->dbo->queryForList($sql, array('userId' => $userId, 'entityType' => $entityType));
}
}