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<?php |
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declare(strict_types=1); |
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namespace Stratadox\TableLoader; |
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use ArrayIterator; |
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use BadMethodCallException; |
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use Exception; |
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use Stratadox\IdentityMap\IdentityMap; |
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use Stratadox\IdentityMap\MapsObjectsByIdentity; |
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use Traversable; |
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final class Result implements ContainsResultingObjects |
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{ |
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private $objects; |
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private $identityMap; |
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private function __construct( |
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array $objects, |
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MapsObjectsByIdentity $identityMap |
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) { |
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$this->objects = $objects; |
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$this->identityMap = $identityMap; |
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} |
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/** |
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* Makes a new result from an array of objects as produced by table loaders |
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* and an identity map. |
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* |
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* @param array[] $objects Array of objects, as: |
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* [label => [id => object]] |
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* @param MapsObjectsByIdentity $identityMap The map of objects by class and |
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* identifier. |
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* @return ContainsResultingObjects |
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*/ |
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public static function fromArray( |
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array $objects, |
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MapsObjectsByIdentity $identityMap = null |
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): ContainsResultingObjects { |
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return new self($objects, $identityMap ?: IdentityMap::startEmpty()); |
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} |
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/** @inheritdoc */ |
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public function has(string $class, string $id): bool |
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{ |
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return $this->identityMap->has($class, $id); |
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} |
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/** @inheritdoc */ |
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public function get(string $class, string $id): object |
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{ |
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return $this->identityMap->get($class, $id); |
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} |
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/** @inheritdoc */ |
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public function add( |
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string $label, |
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string $idForLoading, |
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string $idForMap, |
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object $object |
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): ContainsResultingObjects { |
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return new self($this->merge( |
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$this->objects, |
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[$label => [$idForLoading => $object]] |
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), $this->identityMap->add($idForMap, $object)); |
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} |
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/** @inheritdoc */ |
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public function mergeWith( |
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ContainsResultingObjects $otherObjects |
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): ContainsResultingObjects { |
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return new self( |
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$this->merge($this->objects, $otherObjects), |
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$otherObjects->identityMap() |
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); |
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} |
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/** @inheritdoc */ |
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public function include( |
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string $label, |
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string $id, |
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object $object |
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): ContainsResultingObjects { |
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return new self($this->merge( |
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$this->objects, |
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[$label => [$id => $object]] |
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), $this->identityMap); |
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} |
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/** |
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* @param object[][] $result |
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* @param object[][] $with |
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* @return array |
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*/ |
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private function merge(iterable $result, iterable $with): array |
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{ |
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foreach ($with as $label => $objects) { |
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foreach ($objects as $id => $object) { |
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$result[$label][$id] = $object; |
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} |
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} |
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return $result; |
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} |
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/** @inheritdoc */ |
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public function identityMap(): MapsObjectsByIdentity |
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{ |
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return $this->identityMap; |
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} |
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/** @inheritdoc */ |
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public function getIterator(): Traversable |
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{ |
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return new ArrayIterator($this->objects); |
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} |
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/** @inheritdoc */ |
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public function offsetExists($offset): bool |
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{ |
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return isset($this->objects[$offset]); |
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} |
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/** @inheritdoc */ |
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public function offsetGet($offset): array |
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{ |
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return $this->objects[$offset]; |
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} |
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/** |
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* @inheritdoc |
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* @throws Exception |
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*/ |
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public function offsetSet($offset, $value): void |
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{ |
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throw new BadMethodCallException('Altering the results is not allowed.'); |
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} |
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/** |
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* @inheritdoc |
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* @throws Exception |
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*/ |
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public function offsetUnset($offset): void |
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{ |
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throw new BadMethodCallException('Altering the results is not allowed.'); |
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} |
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} |
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Stratadox /
TableLoader
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