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<?php
/**
* GpsLab component.
*
* @author Peter Gribanov <[email protected]>
* @copyright Copyright (c) 2011, Peter Gribanov
* @license http://opensource.org/licenses/MIT
*/
namespace GpsLab\Component\Command\Queue\Pull;
use GpsLab\Component\Command\Command;
class MemoryUniquePullCommandQueue implements PullCommandQueue
{
* @var Command[]
private $commands = [];
* Publish command to queue.
* @param Command $command
* @return bool
public function publish(Command $command)
$index = array_search($command, $this->commands);
// remove exists command and publish it again
if ($index !== false) {
unset($this->commands[$index]);
}
$this->commands[] = $command;
return true;
* Pop command from queue. Return NULL if queue is empty.
* @return Command|null
public function pull()
return array_shift($this->commands);
gpslab /
cqrs
