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<?php |
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/** |
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* @author : Jagepard <[email protected]> |
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* @license https://mit-license.org/ MIT |
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*/ |
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namespace Behavioral\ChainOfResponsibility; |
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abstract class AbstractHandler implements ChainInterface |
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{ |
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protected AbstractHandler $nextHandler; |
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/** |
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* If the condition matches, code is executed; |
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* if not, then it is passed along the chain to the next handler |
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* |
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* @param string $request |
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*/ |
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public function execute(string $request): void |
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{ |
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// In case of compliance, the code is executed |
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if ($request === get_called_class()) { |
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printf("%s %s\n", get_called_class(), "has handle a request"); |
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return; |
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} |
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if (!isset($this->nextHandler)) { |
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throw new \InvalidArgumentException($request . " does not exist in the chain"); |
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} |
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// Passed to the next handler |
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$this->nextHandler->execute($request); |
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} |
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public function executeAllInChainBeforeRequest(string $request): void |
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{ |
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printf("%s %s\n", get_called_class(), "has handle a request"); |
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if ($request === get_called_class()) { |
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return; |
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} |
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if (!isset($this->nextHandler)) { |
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throw new \InvalidArgumentException($request . " does not exist in the chain"); |
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} |
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// Passed to the next handler |
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$this->nextHandler->executeAllInChainBeforeRequest($request); |
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} |
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/** |
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* Adds the next handler to the chain |
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* |
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* @param AbstractHandler $handler |
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* @return AbstractHandler |
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*/ |
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public function setNext(AbstractHandler $handler): AbstractHandler |
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{ |
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$this->nextHandler = $handler; |
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return $handler; |
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} |
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} |
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Jagepard /
PhpDesignPatterns-ChainOfResponsibility
