Doctrine\ORM\Query\Parser::_processDeferredResultVariables PHP Method

    private function _processDeferredResultVariables()
    {
        foreach ($this->_deferredResultVariables as $deferredItem) {
            $resultVariable = $deferredItem['expression'];

            // Check if ResultVariable exists in queryComponents
            if ( ! isset($this->_queryComponents[$resultVariable])) {
                $this->semanticalError(
                    "'$resultVariable' is not defined.", $deferredItem['token']
                );
            }

            $qComp = $this->_queryComponents[$resultVariable];

            // Check if queryComponent points to an AbstractSchemaName or a ResultVariable
            if ( ! isset($qComp['resultVariable'])) {
                $this->semanticalError(
                    "'$identVariable' does not point to a ResultVariable.", $deferredItem['token']
                );
            }

            // Validate if identification variable nesting level is lower or equal than the current one
            if ($qComp['nestingLevel'] > $deferredItem['nestingLevel']) {
                $this->semanticalError(
                    "'$resultVariable' is used outside the scope of its declaration.", $deferredItem['token']
                );
            }
        }
    }