public function getLogger($name) {
		if(!isset($this->loggers[$name])) {
			$logger = new Logger($name);

			$nodes = explode('.', $name);
			$firstNode = array_shift($nodes);
			
			// if name is not a first node but another first node is their
			if($firstNode != $name and isset($this->loggers[$firstNode])) {
				$logger->setParent($this->loggers[$firstNode]);
			} else {
				// if there is no father, set root logger as father
				$logger->setParent($this->root);
			} 
		
			// if there are more nodes than one
			if(count($nodes) > 0) {
				// find parent node
				foreach($nodes as $node) {
					$parentNode = "$firstNode.$node";
					if(isset($this->loggers[$parentNode]) and $parentNode != $name) {
						$logger->setParent($this->loggers[$parentNode]);
					}
					$firstNode .= ".$node";
				}
			}
			
			$this->loggers[$name] = $logger;
		}		
		
		return $this->loggers[$name];
	}