Builder::applyFilter

public function applyFilter(array &$filter, $searchString)
{
	if (!$searchString)
	{
		return false;
	}
	if (!$this->hasField())
	{
		return false;
	}

	$isFullTextEnabled = $this->isFullTextIndexEnabled();
	$operation = $isFullTextEnabled ? '*' : '*%';
	$filter["{$operation}{$this->fieldName}"] = Content::encodeText($searchString);

	return true;
}