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<?php
/* Icinga Web 2 | (c) 2015 Icinga Development Team | GPLv2+ */
namespace Icinga\Module\Monitoring\Data;
use ArrayIterator;
use FilterIterator;
use Zend_Db_Expr;
/**
* Iterator over non-pseudo monitoring query columns
*/
class ColumnFilterIterator extends FilterIterator
{
/**
* Create a new ColumnFilterIterator
*
* @param array $columns
*/
public function __construct(array $columns)
{
parent::__construct(new ArrayIterator($columns));
}
public function accept(): bool
{
$column = $this->current();
return ! ($column instanceof Zend_Db_Expr || $column === '(NULL)');
}
}
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