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<?php |
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/** |
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* This software package is licensed under AGPL or Commercial license. |
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* |
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* @package maslosoft/mangan |
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* @licence AGPL or Commercial |
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* @copyright Copyright (c) Piotr Masełkowski <[email protected]> |
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* @copyright Copyright (c) Maslosoft |
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* @copyright Copyright (c) Others as mentioned in code |
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* @link https://maslosoft.com/mangan/ |
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*/ |
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namespace Maslosoft\Mangan\Transformers; |
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use Maslosoft\Addendum\Interfaces\AnnotatedInterface; |
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use Maslosoft\Addendum\Utilities\ClassChecker; |
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use Maslosoft\Mangan\Events\ClassNotFound; |
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use Maslosoft\Mangan\Events\Event; |
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use Maslosoft\Mangan\Events\UnknownDocumentType; |
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use Maslosoft\Mangan\Exceptions\ManganException; |
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use Maslosoft\Mangan\Exceptions\TransformatorException; |
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use Maslosoft\Mangan\Helpers\Decorator\Decorator; |
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use Maslosoft\Mangan\Helpers\Decorator\ModelDecorator; |
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use Maslosoft\Mangan\Helpers\Finalizer\FinalizingManager; |
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use Maslosoft\Mangan\Helpers\NotFoundResolver; |
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use Maslosoft\Mangan\Helpers\PkManager; |
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use Maslosoft\Mangan\Helpers\PropertyFilter\Filter; |
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use Maslosoft\Mangan\Helpers\Sanitizer\Sanitizer; |
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use Maslosoft\Mangan\Helpers\UnknownDocumentTypePanicker; |
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use Maslosoft\Mangan\Meta\DocumentPropertyMeta; |
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use Maslosoft\Mangan\Meta\ManganMeta; |
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/** |
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* Transformer |
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* |
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* @author Piotr Maselkowski <pmaselkowski at gmail.com> |
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*/ |
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abstract class Transformer |
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{ |
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/** |
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* Returns the given object as an associative array |
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* @param AnnotatedInterface|object $model |
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* @param string[] $fields Fields to transform |
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* @return array an associative array of the contents of this object |
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*/ |
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public static function fromModel(AnnotatedInterface $model, $fields = []) |
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{ |
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$meta = ManganMeta::create($model); |
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$calledClass = get_called_class(); |
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$decorator = new Decorator($model, $calledClass, $meta); |
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$md = new ModelDecorator($model, $calledClass, $meta); |
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$sanitizer = new Sanitizer($model, $calledClass, $meta); |
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$filter = new Filter($model, $calledClass, $meta); |
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$arr = []; |
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foreach ($meta->fields() as $name => $fieldMeta) |
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{ |
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if (!empty($fields) && !in_array($name, $fields)) |
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{ |
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continue; |
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} |
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if (!$filter->fromModel($model, $fieldMeta)) |
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{ |
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continue; |
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} |
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// NOTE: Sanitizers must be ran for all |
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// fields, as types *might* change between |
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// transformations. |
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// Set model value for writing, this might |
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// cause data type to change. This is |
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// required for decorators. |
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$model->$name = $sanitizer->write($name, $model->$name); |
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$decorator->write($name, $arr); |
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// Sanitize value again to ensure that model |
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// has value of proper type, defined for |
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// transformer type. |
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$model->$name = $sanitizer->read($name, $model->$name); |
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} |
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$md->write($arr); |
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return FinalizingManager::fromModel($arr, static::class, $model); |
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} |
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/** |
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* Create document from array |
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* |
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* @param mixed[] $data |
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* @param string|object $className |
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* @param AnnotatedInterface $instance |
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* @return AnnotatedInterface |
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* @throws TransformatorException |
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* @throws ManganException |
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*/ |
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public static function toModel($data, $className = null, AnnotatedInterface $instance = null, AnnotatedInterface $parent = null, $parentField = '') |
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{ |
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$data = (array) $data; |
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if (is_object($className)) |
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{ |
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$className = get_class($className); |
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} |
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if (!$className) |
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{ |
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if (array_key_exists('_class', $data)) |
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{ |
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$className = $data['_class']; |
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} |
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else |
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{ |
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if (null !== $instance) |
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{ |
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$className = get_class($instance); |
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} |
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else |
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{ |
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$className = UnknownDocumentTypePanicker::tryHandle($data, $parent, $parentField); |
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} |
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} |
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} |
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if ($instance) |
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{ |
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$model = $instance; |
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} |
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else |
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{ |
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self::ensureClass($className); |
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$model = new $className; |
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} |
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$meta = ManganMeta::create($model); |
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$calledClass = get_called_class(); |
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$decorator = new Decorator($model, $calledClass, $meta); |
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$md = new ModelDecorator($model, $calledClass, $meta); |
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$sanitizer = new Sanitizer($model, $calledClass, $meta); |
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$filter = new Filter($model, $calledClass, $meta); |
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// Ensure that primary keys are processed first, |
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// as in some cases those could be processed *after* related |
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// document(s), which results in wrong _id (or pk) being passed. |
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$fieldsMeta = (array) $meta->fields(); |
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$pks = (array)PkManager::getPkKeys($model); |
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foreach($pks as $key) |
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{ |
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if(!array_key_exists($key, $fieldsMeta)) |
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{ |
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continue; |
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} |
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$pkMeta = $fieldsMeta[$key]; |
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unset($fieldsMeta[$key]); |
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$fieldsMeta = array_merge([$key => $pkMeta], $fieldsMeta); |
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} |
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foreach ($fieldsMeta as $name => $fieldMeta) |
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{ |
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/* @var $fieldMeta DocumentPropertyMeta */ |
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if (array_key_exists($name, $data)) |
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{ |
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// Value is available in passed data |
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$value = $data[$name]; |
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} |
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elseif (!empty($instance)) |
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{ |
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// Take value from existing instance |
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// NOTE: We could `continue` here but value should be sanitized anyway |
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$value = $model->$name; |
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} |
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else |
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{ |
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// As a last resort set to default |
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$value = $fieldMeta->default; |
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} |
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if (!$filter->toModel($model, $fieldMeta)) |
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{ |
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continue; |
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} |
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$decorator->read($name, $value); |
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$model->$name = $sanitizer->read($name, $model->$name); |
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} |
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$md->read($data); |
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return FinalizingManager::toModel(static::class, $model); |
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} |
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/** |
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* Get metadata for model |
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* @deprecated Use ManganMeta::create($model) instead |
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* @param AnnotatedInterface $model |
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* @return ManganMeta |
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*/ |
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protected static function getMeta(AnnotatedInterface $model) |
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{ |
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return ManganMeta::create($model); |
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} |
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/** |
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* Ensure that `$class` exists, will |
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* try to use class not found resolver |
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* to find replacements if available. |
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* |
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* @param $class |
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* @throws ManganException |
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*/ |
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protected static function ensureClass(&$class) |
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{ |
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if (!ClassChecker::exists($class)) |
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{ |
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$event = new ClassNotFound; |
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$event->notFound = $class; |
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if (Event::hasHandler(AnnotatedInterface::class, NotFoundResolver::EventClassNotFound) && Event::handled(AnnotatedInterface::class, NotFoundResolver::EventClassNotFound, $event)) |
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{ |
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$class = $event->replacement; |
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} |
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else |
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{ |
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$params = [ |
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$class, |
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NotFoundResolver::class, |
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NotFoundResolver::EventClassNotFound, |
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AnnotatedInterface::class |
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]; |
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$msg = vsprintf("Model class `%s` not found. Attach event handler for `%s::%s` event on `%s` if You changed name to handle this case.", $params); |
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throw new ManganException($msg); |
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} |
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} |
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} |
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} |
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Maslosoft /
Mangan
