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<?php
namespace Elastica\Connection\Strategy;
use Elastica\Exception\InvalidException;
/**
* Description of StrategyFactory.
*
* @author chabior
*/
class StrategyFactory
{
/**
* @param mixed|callable|string|StrategyInterface $strategyName
*
* @throws \Elastica\Exception\InvalidException
*
* @return \Elastica\Connection\Strategy\StrategyInterface
*/
public static function create($strategyName)
{
if ($strategyName instanceof StrategyInterface) {
return $strategyName;
}
if (CallbackStrategy::isValid($strategyName)) {
return new CallbackStrategy($strategyName);
}
if (is_string($strategyName)) {
$requiredInterface = '\\Elastica\\Connection\\Strategy\\StrategyInterface';
$predefinedStrategy = '\\Elastica\\Connection\\Strategy\\'.$strategyName;
if (class_exists($predefinedStrategy) && class_implements($predefinedStrategy, $requiredInterface)) {
return new $predefinedStrategy();
}
if (class_exists($strategyName) && class_implements($strategyName, $requiredInterface)) {
return new $strategyName();
}
}
throw new InvalidException('Can\'t create strategy instance by given argument');
}
}
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