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<?php |
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namespace Drupal\graphql\GraphQL\Buffers; |
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use Drupal\Core\Entity\EntityTypeManagerInterface; |
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class EntityBuffer extends BufferBase { |
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/** |
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* The entity type manager service. |
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* |
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* @var \Drupal\Core\Entity\EntityTypeManagerInterface |
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*/ |
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protected $entityTypeManager; |
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/** |
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* EntityBuffer constructor. |
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* |
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* @param \Drupal\Core\Entity\EntityTypeManagerInterface $entityTypeManager |
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* The entity type manager service. |
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*/ |
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public function __construct(EntityTypeManagerInterface $entityTypeManager) { |
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$this->entityTypeManager = $entityTypeManager; |
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} |
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/** |
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* Add an item to the buffer. |
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* |
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* @param string $type |
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* The entity type of the given entity ids. |
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* @param array|int $id |
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* The entity id(s) to load. |
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* |
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* @return \Closure |
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* The callback to invoke to load the result for this buffer item. |
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*/ |
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public function add($type, $id) { |
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$item = new \ArrayObject([ |
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'type' => $type, |
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'id' => $id, |
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]); |
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return $this->createBufferResolver($item); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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protected function getBufferId($item) { |
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return $item['type']; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function resolveBufferArray(array $buffer) { |
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$type = reset($buffer)['type']; |
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$ids = array_map(function (\ArrayObject $item) { |
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return (array) $item['id']; |
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}, $buffer); |
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$ids = call_user_func_array('array_merge', $ids); |
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$ids = array_values(array_unique($ids)); |
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// Load the buffered entities. |
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$entities = $this->entityTypeManager |
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->getStorage($type) |
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->loadMultiple($ids); |
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return array_map(function ($item) use ($entities) { |
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if (is_array($item['id'])) { |
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return array_intersect_key($entities, array_flip($item['id'])); |
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} |
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return isset($entities[$item['id']]) ? $entities[$item['id']] : NULL; |
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}, $buffer); |
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} |
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} |
drupal-graphql /
graphql
