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<?php
/**
* Copyright 2017 Facebook, Inc.
*
* You are hereby granted a non-exclusive, worldwide, royalty-free license to
* use, copy, modify, and distribute this software in source code or binary
* form for use in connection with the web services and APIs provided by
* Facebook.
*
* As with any software that integrates with the Facebook platform, your use
* of this software is subject to the Facebook Developer Principles and
* Policies [http://developers.facebook.com/policy/]. This copyright notice
* shall be included in all copies or substantial portions of the software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*
*/
namespace Facebook\PersistentData;
use InvalidArgumentException;
class PersistentDataFactory
{
private function __construct()
{
// a factory constructor should never be invoked
}
/**
* PersistentData generation.
*
* @param PersistentDataInterface|string|null $handler
*
* @throws InvalidArgumentException If the persistent data handler isn't "session", "memory", or an instance of Facebook\PersistentData\PersistentDataInterface.
*
* @return PersistentDataInterface
*/
public static function createPersistentDataHandler($handler)
{
if (!$handler) {
return session_status() === PHP_SESSION_ACTIVE
? new FacebookSessionPersistentDataHandler()
: new FacebookMemoryPersistentDataHandler();
}
if ($handler instanceof PersistentDataInterface) {
return $handler;
}
if ('session' === $handler) {
return new FacebookSessionPersistentDataHandler();
}
if ('memory' === $handler) {
return new FacebookMemoryPersistentDataHandler();
}
throw new InvalidArgumentException('The persistent data handler must be set to "session", "memory", or be an instance of Facebook\PersistentData\PersistentDataInterface');
}
}
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