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<?php
namespace kalanis\kw_storage\Access;
use kalanis\kw_storage\Interfaces;
use kalanis\kw_storage\Interfaces\IStorage;
use kalanis\kw_storage\StorageException;
use kalanis\kw_storage\Traits\TLang;
/**
* Class Multiton
* @package kalanis\kw_storage\Access
* Multiple storages via one access point; just use different params to get correct one
*/
class Multiton
{
use TLang;
/** @var Factory */
protected $factory = null;
/** @var array<string, IStorage> */
protected $instances = [];
public function __construct(?Interfaces\IStTranslations $lang = null)
$this->setStLang($lang);
$this->factory = new Factory($this->getStLang());
}
* @param array<string|int, string|int|float|object|bool|array<string|int|float|object>>|string|object|int|bool|null $params
* @param string|null $alias
* @throws StorageException
* @return IStorage
public function lookup($params, ?string $alias = null): IStorage
$key = $alias ?? $this->paramsToKey($params);
if (!isset($this->instances[$key])) {
$this->instances[$key] = $this->factory->getStorage($params);
return $this->instances[$key];
* @return string
public function paramsToKey($params): string
return md5(base64_encode(serialize($params)));
alex-kalanis /
kw_storage
