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<?php |
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namespace Cerbero\Workflow\Wrappers; |
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use Exception; |
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use ArrayAccess; |
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use ReflectionClass; |
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use ReflectionParameter; |
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use Illuminate\Contracts\Bus\Dispatcher; |
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/** |
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* Wrapper to marshal commands before dispatching them. |
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* |
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* @author Andrea Marco Sartori |
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*/ |
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class MarshalDispatcher implements DispatcherInterface |
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{ |
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/** |
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* @author Andrea Marco Sartori |
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* @var Illuminate\Contracts\Bus\Dispatcher $dispatcher Bus dispatcher. |
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*/ |
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protected $dispatcher; |
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/** |
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* @author Andrea Marco Sartori |
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* @var string $command Command to dispatch |
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*/ |
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protected $command; |
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/** |
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* @author Andrea Marco Sartori |
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* @var \ArrayAccess $values Parameters values |
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*/ |
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protected $values; |
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/** |
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* Set the dependencies. |
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* |
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* @author Andrea Marco Sartori |
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* @param Illuminate\Contracts\Bus\Dispatcher $dispatcher |
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* @return void |
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*/ |
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public function __construct(Dispatcher $dispatcher) |
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{ |
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$this->dispatcher = $dispatcher; |
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} |
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/** |
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* Set the pipes commands should be piped through before dispatching. |
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* |
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* @author Andrea Marco Sartori |
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* @param array $pipes |
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* @return $this |
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*/ |
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public function pipeThrough(array $pipes) |
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{ |
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$this->dispatcher->pipeThrough($pipes); |
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return $this; |
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} |
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/** |
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* Marshal a command and dispatch it. |
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* |
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* @author Andrea Marco Sartori |
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* @param mixed $command |
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* @param \ArrayAccess $source |
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* @param array $extras |
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* @return mixed |
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*/ |
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public function dispatchFrom($command, ArrayAccess $source, array $extras = []) |
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{ |
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$this->command = $command; |
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$this->values = array_merge((array) $source, $extras); |
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return $this->dispatcher->dispatch($this->marshal()); |
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} |
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/** |
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* Marshal the command to dispatch. |
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* |
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* @author Andrea Marco Sartori |
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* @return mixed |
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*/ |
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protected function marshal() |
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{ |
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$reflection = new ReflectionClass($this->command); |
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$constructor = $reflection->getConstructor(); |
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$params = $this->getParamsToInject($constructor->getParameters()); |
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return $reflection->newInstanceArgs($params); |
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} |
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/** |
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* Retrieve the arguments to inject into the command constructor. |
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* |
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* @author Andrea Marco Sartori |
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* @param array $parameters |
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* @return array |
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*/ |
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protected function getParamsToInject(array $parameters) |
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{ |
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return array_map(function ($parameter) |
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{ |
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return $this->grabParameter($parameter); |
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}, $parameters); |
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} |
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/** |
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* Get a parameter value for a marshaled command. |
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* |
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* @author Andrea Marco Sartori |
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* @param \ReflectionParameter $parameter |
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* @return mixed |
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*/ |
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protected function grabParameter(ReflectionParameter $parameter) |
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{ |
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if (isset($this->values[$parameter->name])) |
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{ |
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return $this->values[$parameter->name]; |
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} |
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if ($parameter->isDefaultValueAvailable()) |
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{ |
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return $parameter->getDefaultValue(); |
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} |
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throw new Exception("Unable to map parameter [{$parameter->name}] to command [{$this->command}]"); |
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} |
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} |
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cerbero90 /
Workflow
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Adding a
@returnannotation to a constructor is not recommended, since a constructor does not have a meaningful return value.Please refer to the PHP core documentation on constructors.