public function __construct($operation, array $filters = array())
{
if (!in_array($operation, $this->operations)) {
$operations = implode(', ', $this->operations);
throw new \Exception("Invalid composite filter operation [{$operation}]. Expected one of: {$operations}");
}
$this->operation = $operation;
foreach ($filters as $filter) {
if (is_array($filter)) {
$filter = ColumnFilter::fromArray($filter);
}
$this->add($filter);
}
}
