/**
* The default handler is the last to be run and handler simple value parsing.
*
* @param string $key
* @param string $value
* @param ExpressionBuilder $expr
*
* @return Filter
*/
public function defaultFilterHandler($key, $value, $expr)
{
$val = $this->parseValue($value);
$placeholder = $key . '_1';
$exprMethod = $val['operator'];
$filter = new Filter();
$filter->setKey($key);
$filter->setExpression($expr->andX($expr->{$exprMethod}($this->alias . $key, ":{$placeholder}")));
$filter->setParameters([$placeholder => $val['value']]);
return $filter;
}