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N.1065 Fix performance issues (caches added on query build)

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SVN:trunk[4943]
This commit is contained in:
Eric Espié
2017-09-27 09:37:43 +00:00
parent 43e4408df1
commit e785352050
4 changed files with 151 additions and 32 deletions
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23
core/oql/expression.class.inc.php
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@@ -1,9 +1,9 @@
<?php
// Copyright (C) 2010-2017 Combodo SARL
// Copyright (c) 2010-2017 Combodo SARL
//
// This file is part of iTop.
//
// iTop is free software; you can redistribute it and/or modify
// iTop 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.
@@ -15,16 +15,9 @@
//
// You should have received a copy of the GNU Affero General Public License
// along with iTop. If not, see <http://www.gnu.org/licenses/>
//
/**
* General definition of an expression tree (could be OQL, SQL or whatever)
*
* @copyright Copyright (C) 2010-2017 Combodo SARL
* @license http://opensource.org/licenses/AGPL-3.0
*/
class MissingQueryArgument extends CoreException
lass MissingQueryArgument extends CoreException
{
}
@@ -89,9 +82,15 @@ abstract class Expression
*/
static public function FromOQL($sConditionExpr)
{
static $aCache = array();
if (array_key_exists($sConditionExpr, $aCache))
{
return $aCache[$sConditionExpr];
}
$oOql = new OqlInterpreter($sConditionExpr);
$oExpression = $oOql->ParseExpression();
$aCache[$sConditionExpr] = $oExpression;
return $oExpression;
}