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<?php |
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declare(strict_types=1); |
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namespace Stratadox\EntityState; |
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use function array_map as extractWith; |
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use function array_merge as these; |
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use function get_class as classOfThe; |
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use function is_iterable as itIsACollection; |
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use function sprintf; |
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use Stratadox\EntityState\Internal\CollectionExtractor; |
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use Stratadox\EntityState\Internal\Extractor; |
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use Stratadox\EntityState\Internal\Name; |
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use Stratadox\EntityState\Internal\ObjectExtractor; |
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use Stratadox\EntityState\Internal\PropertyExtractor; |
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use Stratadox\EntityState\Internal\ReflectionProperties; |
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use Stratadox\EntityState\Internal\ScalarExtractor; |
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use Stratadox\EntityState\Internal\ShouldStringify; |
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use Stratadox\EntityState\Internal\Visited; |
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use Stratadox\IdentityMap\MapsObjectsByIdentity as Map; |
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use Stratadox\IdentityMap\NoSuchObject; |
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/** |
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* Extract the state of the entities. |
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* |
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* @author Stratadox |
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*/ |
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final class Extract implements ExtractsEntityState |
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{ |
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private $extractor; |
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private function __construct(Extractor $extractor) |
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{ |
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$this->extractor = $extractor; |
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} |
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/** |
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* Produces a state extractor. |
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* |
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* @return ExtractsEntityState |
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*/ |
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public static function state(): ExtractsEntityState |
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{ |
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return new Extract( |
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PropertyExtractor::using(CollectionExtractor::withAlternative( |
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ObjectExtractor::withAlternative(ScalarExtractor::asLastResort()) |
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)) |
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); |
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} |
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/** |
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* Produces a state extractor that converts certain types to string. |
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* |
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* @param mixed ...$classes |
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* @return ExtractsEntityState |
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*/ |
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public static function stringifying(...$classes): ExtractsEntityState |
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{ |
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return new Extract( |
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PropertyExtractor::using(CollectionExtractor::withAlternative( |
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ObjectExtractor::stringifyingWithAlternative( |
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ShouldStringify::these(...$classes), |
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ScalarExtractor::asLastResort() |
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) |
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)) |
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); |
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} |
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/** @inheritdoc */ |
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public function from(Map $map): State |
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{ |
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return $this->fromOnly($map, ...$map->objects()); |
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} |
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/** @inheritdoc */ |
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public function fromOnly(Map $map, object ...$objects): State |
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{ |
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return StateRepresentation::with( |
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EntityStates::list(...extractWith( |
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function (object $entity) use ($map): RepresentsEntity { |
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return $this->stateOfThe($entity, $map); |
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}, $objects |
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)), |
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$map |
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); |
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} |
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/** @throws NoSuchObject */ |
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private function stateOfThe(object $entity, Map $map): RepresentsEntity |
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{ |
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$properties = []; |
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if (itIsACollection($entity)) { |
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$count = 0; |
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foreach ($entity as $key => $item) { |
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$properties[] = $this->extractor->extract( |
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Name::fromCollectionEntry($entity, (string) $key), |
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$item, |
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$map, |
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Visited::noneYet() |
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); |
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$count++; |
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} |
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$properties[] = [PropertyState::with(sprintf( |
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'count(%s)', |
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classOfThe($entity) |
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), $count)]; |
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} |
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foreach (ReflectionProperties::ofThe($entity) as $property) { |
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$properties[] = $this->extractor->extract( |
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Name::fromReflection($property), |
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$property->getValue($entity), |
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$map, |
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Visited::noneYet() |
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); |
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} |
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return EntityState::ofThe( |
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classOfThe($entity), |
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$map->idOf($entity), |
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empty($properties) ? PropertyStates::list() : PropertyStates::list( |
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...these(...$properties) |
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) |
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); |
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} |
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} |
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Stratadox /
EntityState
