59 lines
1.5 KiB
PHP
59 lines
1.5 KiB
PHP
<?php
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/**
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* Copyright 2014 Openstack Foundation
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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* http://www.apache.org/licenses/LICENSE-2.0
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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**/
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/**
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* Class EntityCounterHelper
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*/
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final class EntityCounterHelper {
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/**
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* @var EntityCounterHelper
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*/
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private static $instance;
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private function __construct(){}
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private function __clone(){}
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/**
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* @return EntityCounterHelper
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*/
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public static function getInstance(){
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if(!is_object(self::$instance)){
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self::$instance = new EntityCounterHelper();
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}
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return self::$instance;
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}
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public function EntityCount($entity_name, callable $payload_function=null){
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$cache = SS_Cache::factory('cache_entity_count');
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$result = unserialize($cache->load('var_'.$entity_name));
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if(!$result){
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if($payload_function==null){
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$sqlQuery = new SQLQuery(
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"COUNT(ID)",
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array($entity_name)
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);
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$result = $sqlQuery->execute()->value();
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}
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else{
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$result = $payload_function();
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}
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$cache->save(serialize($result), 'var_'.$entity_name);
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}
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if(Director::is_ajax()){
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return json_encode($result);
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}
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return $result;
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}
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}
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