public function getAdapterClassName($configName) {
		$className = $this->_getAdapterClassFromConfig($configName);
		if (in_array($className, $this->_adapterClasses)) {
			$position = strripos($className, '\\');
			$this->_adapterClass = substr($className, $position + 1, strlen($className));

			return $this->_adapterClass;
		}

		return false;
	}