mirror of
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111 lines
2.5 KiB
PHP
111 lines
2.5 KiB
PHP
<?php
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// Copyright (c) 2010-2017 Combodo SARL
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//
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// This file is part of iTop.
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//
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// iTop 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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// iTop 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 iTop. If not, see <http://www.gnu.org/licenses/>
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//
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class ExpressionCache
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{
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static private $aCache = array();
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static public function GetCachedExpression($sClass, $sAttCode)
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{
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// read current cache
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@include_once (static::GetCacheFileName());
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$oExpr = null;
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$sKey = static::GetKey($sClass, $sAttCode);
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if (array_key_exists($sKey, static::$aCache))
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{
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$oExpr = static::$aCache[$sKey];
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}
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else
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{
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if (class_exists('ExpressionCacheData'))
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{
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if (array_key_exists($sKey, ExpressionCacheData::$aCache))
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{
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$sVal = ExpressionCacheData::$aCache[$sKey];
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$oExpr = unserialize($sVal);
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static::$aCache[$sKey] = $oExpr;
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}
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}
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}
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return $oExpr;
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}
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static public function Warmup()
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{
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$sFilePath = static::GetCacheFileName();
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if (!is_file($sFilePath))
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{
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$content = <<<EOF
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<?php
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// Copyright (c) 2010-2017 Combodo SARL
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// Generated Expression Cache file
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class ExpressionCacheData
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{
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static \$aCache = array(
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EOF;
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foreach(MetaModel::GetClasses() as $sClass)
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{
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$content .= static::GetSerializedExpression($sClass, 'friendlyname');
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if (MetaModel::IsObsoletable($sClass))
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{
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$content .= static::GetSerializedExpression($sClass, 'obsolescence_flag');
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}
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}
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$content .= <<<EOF
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);
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}
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EOF;
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file_put_contents($sFilePath, $content);
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}
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}
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static private function GetSerializedExpression($sClass, $sAttCode)
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{
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$sKey = static::GetKey($sClass, $sAttCode);
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$oExpr = DBObjectSearch::GetPolymorphicExpression($sClass, $sAttCode);
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return "'".$sKey."' => '".serialize($oExpr)."',\n";
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}
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/**
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* @param $sClass
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* @param $sAttCode
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* @return string
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*/
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static private function GetKey($sClass, $sAttCode)
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{
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return $sClass.'::'.$sAttCode;
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}
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public static function GetCacheFileName()
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{
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return utils::GetCachePath().'expressioncache.php';
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}
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}
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