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<?php |
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/** |
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* CallableObject.php |
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* |
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* Jaxon callable object |
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* |
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* This class stores a reference to an object whose methods can be called from |
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* the client via a Jaxon request |
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* |
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* The Jaxon plugin manager will call <CallableObject->getClientScript> so that |
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* stub functions can be generated and sent to the browser. |
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* |
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* @package jaxon-core |
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* @author Jared White |
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* @author J. Max Wilson |
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* @author Joseph Woolley |
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* @author Steffen Konerow |
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* @author Thierry Feuzeu <[email protected]> |
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* @copyright Copyright (c) 2005-2007 by Jared White & J. Max Wilson |
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* @copyright Copyright (c) 2008-2010 by Joseph Woolley, Steffen Konerow, Jared White & J. Max Wilson |
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* @copyright 2016 Thierry Feuzeu <[email protected]> |
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* @license https://opensource.org/licenses/BSD-3-Clause BSD 3-Clause License |
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* @link https://github.com/jaxon-php/jaxon-core |
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*/ |
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namespace Jaxon\Plugin\Request\CallableClass; |
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use Jaxon\App\AbstractCallable; |
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use Jaxon\App\Metadata\InputData; |
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use Jaxon\App\Metadata\MetadataInterface; |
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use Jaxon\App\Metadata\MetadataReaderInterface; |
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use Jaxon\Di\ClassContainer; |
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use Jaxon\Di\Container; |
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use Jaxon\Exception\SetupException; |
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use Jaxon\Request\Target; |
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use Jaxon\Response\AbstractResponse; |
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use Jaxon\Utils\Config\Config; |
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use ReflectionClass; |
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use ReflectionException; |
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use ReflectionMethod; |
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use ReflectionProperty; |
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use function array_fill_keys; |
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use function array_filter; |
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use function array_map; |
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use function array_merge; |
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use function call_user_func; |
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use function is_array; |
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use function is_string; |
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use function json_encode; |
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use function str_replace; |
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use function substr; |
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class CallableObject |
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{ |
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/** |
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* The user registered callable object |
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* |
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* @var mixed |
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*/ |
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private $xRegisteredObject = null; |
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/** |
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* The target of the Jaxon call |
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* |
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* @var Target |
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*/ |
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private $xTarget; |
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/** |
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* The options of this callable object |
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* |
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* @var CallableObjectOptions|null |
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*/ |
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private $xOptions = null; |
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/** |
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* @var int |
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*/ |
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private $nPropertiesFilter = ReflectionProperty::IS_PUBLIC | ReflectionProperty::IS_PROTECTED; |
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/** |
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* @var int |
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*/ |
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private $nMethodsFilter = ReflectionMethod::IS_PUBLIC; |
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/** |
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* @var array |
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*/ |
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private $aProtectedMethods; |
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/** |
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* The class constructor |
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* |
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* @param ClassContainer $cls |
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* @param Container $di |
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* @param ReflectionClass $xReflectionClass |
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* @param array $aOptions |
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* @param array $aProtectedMethods |
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*/ |
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public function __construct(protected ClassContainer $cls, protected Container $di, |
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private ReflectionClass $xReflectionClass, array $aOptions, array $aProtectedMethods) |
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{ |
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$this->aProtectedMethods = array_fill_keys($aProtectedMethods, true); |
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$xMetadata = $this->getAttributes($xReflectionClass, $aOptions); |
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$this->xOptions = new CallableObjectOptions($aOptions, $xMetadata); |
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} |
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/** |
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* @param ReflectionClass $xReflectionClass |
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* @param array $aOptions |
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* |
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* @return MetadataInterface|null |
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*/ |
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private function getAttributes(ReflectionClass $xReflectionClass, array $aOptions): ?MetadataInterface |
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{ |
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/** @var Config|null */ |
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$xConfig = $aOptions['config'] ?? null; |
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if($xConfig === null) |
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{ |
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return null; |
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} |
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/** @var MetadataReaderInterface */ |
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$xMetadataReader = $this->di->getMetadataReader($xConfig->getOption('metadata', '')); |
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return $xMetadataReader->getAttributes(new InputData($xReflectionClass, |
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$this->getPublicMethods(true), $this->getProperties())); |
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} |
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/** |
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* Get the public and protected attributes of the callable object |
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* |
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* @return array |
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*/ |
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private function getProperties(): array |
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{ |
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return array_map(function($xProperty) { |
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return $xProperty->getName(); |
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}, $this->xReflectionClass->getProperties($this->nPropertiesFilter)); |
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} |
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/** |
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* @param string $sMethodName |
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* @param bool $bTakeAll |
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* |
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* @return bool |
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*/ |
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private function isProtectedMethod(string $sMethodName, bool $bTakeAll): bool |
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{ |
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// Don't take magic __call, __construct, __destruct methods |
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// Don't take protected methods |
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return substr($sMethodName, 0, 2) === '__' || |
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isset($this->aProtectedMethods[$sMethodName]) || |
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(!$bTakeAll && $this->xOptions !== null && |
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$this->xOptions->isProtectedMethod($this->xReflectionClass, $sMethodName)); |
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} |
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/** |
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* Get the public methods of the callable object |
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* |
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* @param bool $bTakeAll |
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* |
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* @return array |
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*/ |
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public function getPublicMethods(bool $bTakeAll): array |
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{ |
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$aMethods = array_map(function($xMethod) { |
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return $xMethod->getShortName(); |
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}, $this->xReflectionClass->getMethods($this->nMethodsFilter)); |
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return array_filter($aMethods, function($sMethodName) use($bTakeAll) { |
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return !$this->isProtectedMethod($sMethodName, $bTakeAll); |
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}); |
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} |
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/** |
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* @return bool |
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*/ |
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public function excluded(): bool |
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{ |
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return $this->xOptions->excluded(); |
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} |
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/** |
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* Get the name of the registered PHP class |
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* |
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* @return string |
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*/ |
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public function getClassName(): string |
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{ |
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return $this->xReflectionClass->getName(); |
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} |
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/** |
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* Get the name of the corresponding javascript class |
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* |
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* @return string |
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*/ |
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public function getJsName(): string |
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{ |
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return str_replace('\\', $this->xOptions->separator(), $this->getClassName()); |
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} |
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/** |
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* Get the js options of the callable class |
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* |
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* @return array |
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*/ |
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public function getOptions(): array |
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{ |
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return $this->xOptions->jsOptions(); |
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} |
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/** |
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* Return a list of methods of the callable object to export to javascript |
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* |
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* @return array |
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*/ |
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public function getCallableMethods(): array |
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{ |
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// Get the method options, and convert each of them to |
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// a string to be displayed in the js script template. |
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$fGetOption = function($sMethodName) { |
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return array_map(function($xOption) { |
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return is_array($xOption) ? json_encode($xOption) : $xOption; |
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}, $this->xOptions->getMethodOptions($sMethodName)); |
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}; |
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return array_map(function($sMethodName) use($fGetOption) { |
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return [ |
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'name' => $sMethodName, |
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'config' => $fGetOption($sMethodName), |
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]; |
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}, $this->getPublicMethods(false)); |
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} |
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/** |
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* Check if the specified method name is one of the methods of the registered callable object |
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* |
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* @param string $sMethod The name of the method to check |
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* |
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* @return bool |
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*/ |
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public function hasMethod(string $sMethod): bool |
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{ |
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return $this->xReflectionClass->hasMethod($sMethod); |
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} |
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/** |
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* Call the specified method of the registered callable object using the specified array of arguments |
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* |
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* @param string $sMethod The method name |
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* @param array $aArgs The method arguments |
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* @param bool $bAccessible If false, only calls to public method are allowed |
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* |
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* @return mixed |
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* @throws ReflectionException |
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*/ |
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private function callMethod(string $sMethod, array $aArgs, bool $bAccessible) |
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{ |
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$reflectionMethod = $this->xReflectionClass->getMethod($sMethod); |
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$reflectionMethod->setAccessible($bAccessible); // Make it possible to call protected methods |
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return $reflectionMethod->invokeArgs($this->xRegisteredObject, $aArgs); |
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} |
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/** |
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* Call the specified method of the registered callable object using the specified array of arguments |
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* |
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* @param array $aHookMethods The method config options |
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* |
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* @return void |
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* @throws ReflectionException |
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*/ |
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private function callHookMethods(array $aHookMethods) |
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{ |
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$sMethod = $this->xTarget->getMethodName(); |
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// The hooks defined at method level are merged with those defined at class level. |
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$aMethods = array_merge($aHookMethods['*'] ?? [], $aHookMethods[$sMethod] ?? []); |
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foreach($aMethods as $xKey => $xValue) |
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{ |
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$sHookName = $xValue; |
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$aHookArgs = []; |
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if(is_string($xKey)) |
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{ |
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$sHookName = $xKey; |
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$aHookArgs = is_array($xValue) ? $xValue : [$xValue]; |
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} |
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$this->callMethod($sHookName, $aHookArgs, true); |
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} |
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} |
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/** |
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* @param mixed $xRegisteredObject |
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* @param array $aDiOptions |
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* |
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* @return void |
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*/ |
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private function setDiAttributes($xRegisteredObject, array $aDiOptions) |
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{ |
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// Set the protected attributes of the object |
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$cSetter = function($sName, $xInjectedObject) { |
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// Warning: dynamic properties will be deprecated in PHP8.2. |
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$this->$sName = $xInjectedObject; |
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}; |
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foreach($aDiOptions as $sName => $sClass) |
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{ |
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// The setter has access to protected attributes |
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$_cSetter = $cSetter->bindTo($xRegisteredObject, $xRegisteredObject); |
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call_user_func($_cSetter, $sName, $this->di->get($sClass)); |
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} |
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} |
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/** |
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* @param mixed $xRegisteredObject |
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* |
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* @return void |
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*/ |
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public function setDiClassAttributes($xRegisteredObject) |
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{ |
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$aDiOptions = $this->xOptions->diOptions(); |
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$this->setDiAttributes($xRegisteredObject, $aDiOptions['*'] ?? []); |
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} |
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/** |
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* @param mixed $xRegisteredObject |
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* @param string $sMethodName |
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* |
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* @return void |
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*/ |
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private function setDiMethodAttributes($xRegisteredObject, string $sMethodName) |
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{ |
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$aDiOptions = $this->xOptions->diOptions(); |
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$this->setDiAttributes($xRegisteredObject, $aDiOptions[$sMethodName] ?? []); |
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} |
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/** |
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* Get a callable object when one of its method needs to be called |
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* |
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* @param Target|null $xTarget |
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* |
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* @return mixed |
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*/ |
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public function getRegisteredObject(?Target $xTarget = null) |
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{ |
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$xRegisteredObject = $this->cls->get($this->getClassName()); |
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if(!$xRegisteredObject || !$xTarget) |
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{ |
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return $xRegisteredObject; |
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} |
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// Set attributes from the DI container. |
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// The class level DI options were set when creating the object instance. |
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// We now need to set the method level DI options. |
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$this->setDiMethodAttributes($xRegisteredObject, $xTarget->getMethodName()); |
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// Set the Jaxon request target in the helper |
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if($xRegisteredObject instanceof AbstractCallable) |
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{ |
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// Set the protected attributes of the object |
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$sAttr = 'xHelper'; |
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$cSetter = function() use($xTarget, $sAttr) { |
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$this->$sAttr->xTarget = $xTarget; |
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}; |
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// Can now access protected attributes |
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call_user_func($cSetter->bindTo($xRegisteredObject, $xRegisteredObject)); |
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} |
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return $xRegisteredObject; |
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} |
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/** |
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* Call the specified method of the registered callable object using the specified array of arguments |
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* |
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* @param Target $xTarget The target of the Jaxon call |
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* |
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* @return null|AbstractResponse |
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* @throws ReflectionException |
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* @throws SetupException |
379
|
|
|
*/ |
380
|
|
|
public function call(Target $xTarget): ?AbstractResponse |
381
|
|
|
{ |
382
|
|
|
$this->xTarget = $xTarget; |
383
|
|
|
$this->xRegisteredObject = $this->getRegisteredObject($xTarget); |
384
|
|
|
|
385
|
|
|
// Methods to call before processing the request |
386
|
|
|
$this->callHookMethods($this->xOptions->beforeMethods()); |
387
|
|
|
|
388
|
|
|
// Call the request method |
389
|
|
|
$sMethod = $xTarget->getMethodName(); |
390
|
|
|
$xResponse = $this->callMethod($sMethod, $this->xTarget->args(), false); |
391
|
|
|
|
392
|
|
|
// Methods to call after processing the request |
393
|
|
|
$this->callHookMethods($this->xOptions->afterMethods()); |
394
|
|
|
return $xResponse; |
395
|
|
|
} |
396
|
|
|
} |
397
|
|
|
|
This check looks for calls to methods that do not seem to exist on a given type. It looks for the method on the type itself as well as in inherited classes or implemented interfaces.
This is most likely a typographical error or the method has been renamed.