/** * Adds a filter on the instance of the searchnode. * * @param string $filter The fieldname you want to filter OR a SQL where * clause expression. * @param string $value Required value. (Ommit this parameter if you pass * an SQL expression for $filter.) */ public function addSearchFilter($filter, $value = '') { if (!$this->m_searchnodeInstance) { $this->createSearchNodeInstance(); } $this->m_searchnodeInstance->addFilter($filter, $value); }