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<?php |
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declare(strict_types=1); |
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namespace Oliverde8\Component\PhpEtl\ChainOperation; |
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use Oliverde8\Component\PhpEtl\Item\DataItemInterface; |
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use Oliverde8\Component\PhpEtl\Item\ItemInterface; |
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use Oliverde8\Component\PhpEtl\Item\StopItem; |
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use Oliverde8\Component\PhpEtl\Model\ExecutionContext; |
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/** |
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* Class AbstractChainOperation |
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* |
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* @author de Cramer Oliver<[email protected]> |
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* @copyright 2018 Oliverde8 |
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* @package Oliverde8\Component\PhpEtl\ChainOperation |
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*/ |
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abstract class AbstractChainOperation implements ChainOperationInterface |
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{ |
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private $methodResolutionCache = []; |
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/** |
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* @inheritdoc |
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*/ |
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final public function process(ItemInterface $item, ExecutionContext $context): ItemInterface |
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{ |
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if (!isset($this->methodResolutionCache[get_class($item)])) { |
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$this->methodResolutionCache[get_class($item)] = $this->resolveMethodName($item); |
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} |
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$method = $this->methodResolutionCache[get_class($item)]; |
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if (!is_null($method)) { |
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return $this->$method($item, $context); |
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} |
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return $item; |
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} |
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private function resolveMethodName(ItemInterface $item): ?string |
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{ |
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$processReflection = new \ReflectionClass($this); |
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foreach ($processReflection->getMethods() as $method) { |
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if ($this->validateMethod($method)) { |
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$firstParameter = $method->getParameters()[0]; |
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$expecting = $firstParameter->getType()->getName(); |
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if (interface_exists($expecting)) { |
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$itemReflection = new \ReflectionClass($item); |
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if ($itemReflection->implementsInterface($expecting)) { |
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return $method->getName(); |
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} |
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continue; |
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} |
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if ($this->checkIsA(get_class($item), $expecting)) { |
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return $method->getName(); |
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} |
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}; |
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} |
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return null; |
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} |
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private function checkIsA(string $class, string $targetClass): bool |
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{ |
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if ($class == $targetClass) { |
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return true; |
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} |
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while($class = get_parent_class($class)) { |
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if ($class == $targetClass) { |
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return true; |
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} |
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} |
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return false; |
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} |
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private function validateMethod(\ReflectionMethod $method) |
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{ |
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if (count($method->getParameters()) != 2) { |
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return false; |
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} |
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if (in_array($method->getName(), ['process', 'resolveMethodName'])) { |
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return false; |
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} |
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if (strpos($method->getName(), "process") !== 0) { |
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return false; |
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} |
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return true; |
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} |
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} |
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oliverde8 /
php-etl
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