Pinq\Caching\DirectoryCache::__construct PHP Method

    public function __construct($directory, $fileExtension = self::DEFAULT_EXTENSION, $namespace = null)
    {
        parent::__construct($namespace);
        $this->rootDirectory = $directory . DIRECTORY_SEPARATOR;
        $this->fileExtension = $fileExtension;
        if ($namespace !== null) {
            $this->directory = $this->rootDirectory . md5($namespace) . DIRECTORY_SEPARATOR;
        } else {
            $this->directory = $this->rootDirectory;
        }
        if (!is_dir($this->directory)) {
            if (!@mkdir($this->directory, 0777, true)) {
                throw new PinqException('Invalid cache directory: %s does not exist and could not be created', $this->directory);
            }
        }
    }