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<?php |
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namespace Mouf\Mvc\Splash\Services; |
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use Mouf\Mvc\Splash\Utils\SplashException; |
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use ReflectionMethod; |
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/** |
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* A class that holds all parameter fetchers. |
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*/ |
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class ParameterFetcherRegistry |
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{ |
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/** |
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* @var ParameterFetcher[] |
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*/ |
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private $parameterFetchers; |
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/** |
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* @param ParameterFetcher[] $parameterFetchers |
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*/ |
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public function __construct(array $parameterFetchers = []) |
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{ |
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$this->parameterFetchers = $parameterFetchers; |
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} |
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/** |
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* Builds a registry with the default fetchers. |
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* |
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* @return ParameterFetcherRegistry |
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*/ |
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public static function buildDefaultControllerRegistry() : ParameterFetcherRegistry |
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{ |
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return new self([ |
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new SplashRequestFetcher(), |
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new SplashRequestParameterFetcher(), |
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]); |
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} |
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/** |
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* Adds a parameter fetcher. It will be executed at the top of the list (first). |
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* |
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* @param ParameterFetcher $parameterFetcher |
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* @return ParameterFetcherRegistry |
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*/ |
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public function registerParameterFetcher(ParameterFetcher $parameterFetcher) : ParameterFetcherRegistry |
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{ |
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array_unshift($this->parameterFetchers, $parameterFetcher); |
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return $this; |
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} |
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/** |
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* Analyses the method and returns an array of SplashRequestParameterFetcher. |
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* Note: the return from this method is meant to be cached. |
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* |
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* @param ReflectionMethod $refMethod |
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* @param string $url |
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* |
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* @return array[] An array representing serializable fetchers. Each fetcher is represented as an array with 2 keys: "fetcherId" (an ID for the fetcher) and "data" (data required by the fetcher) |
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* @throws SplashException |
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*/ |
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public function mapParameters(ReflectionMethod $refMethod, string $url = null) : array |
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{ |
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$parameters = $refMethod->getParameters(); |
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$values = []; |
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foreach ($parameters as $parameter) { |
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$found = false; |
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foreach ($this->parameterFetchers as $id => $fetcher) { |
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if ($fetcher->canHandle($parameter)) { |
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$data = $fetcher->getFetcherData($parameter, $url); |
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$values[] = [ 'fetcherId' => $id, 'data' => $data ]; |
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$found = true; |
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break; |
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} |
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} |
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if (!$found) { |
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throw new SplashException('Unable to handle parameter $'.$parameter->getName().' in '.$parameter->getDeclaringClass()->getName().'::'.$parameter->getDeclaringFunction()->getName()); |
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} |
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} |
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return $values; |
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} |
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/** |
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* Maps data returned by mapParameters to real arguments to be passed to the action. |
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* |
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* @param SplashRequestContext $context |
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* @param array $parametersMap |
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* @return array |
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*/ |
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public function toArguments(SplashRequestContext $context, array $parametersMap) : array |
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{ |
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$arguments = []; |
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foreach ($parametersMap as $parameter) { |
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$fetcherid = $parameter['fetcherId']; |
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$data = $parameter['data']; |
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$arguments[] = $this->parameterFetchers[$fetcherid]->fetchValue($data, $context); |
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} |
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return $arguments; |
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} |
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} |
thecodingmachine /
mvc.splash-common
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