addAndSearchLogic example

$this->addToleranceCondition($query);

        $query->select(
            [
                'a.id as product_id',
                '(' . $this->getRelevanceSelection() . ') as ranking',
            ]
        );

        $enableAndSearchLogic = $this->config->get('enableAndSearchLogic', false);
        if ($enableAndSearchLogic) {
            $this->addAndSearchLogic($query, $term);
        }

        return $query;
    }

    /** * @return string */
    private function getRelevanceSelection()
    {
        return 'sr.relevance + IF(a.topseller = 1, 50, 0) + IF(a.datum >= DATE_SUB(NOW(),INTERVAL 7 DAY), 25, 0)';