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<?php |
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/* |
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* This file is part of the OverblogGraphQLBundle package. |
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* |
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* (c) Overblog <http://github.com/overblog/> |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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namespace Overblog\GraphQLBundle\Resolver; |
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use GraphQL\Type\Definition\Type; |
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use Psr\Cache\CacheItemPoolInterface; |
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use Symfony\Component\Cache\Adapter\ArrayAdapter; |
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class TypeResolver extends AbstractResolver |
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{ |
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/** |
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* @var CacheItemPoolInterface |
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*/ |
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private $cacheAdapter; |
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public function __construct(CacheItemPoolInterface $cacheAdapter = null) |
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{ |
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$this->cacheAdapter = null !== $cacheAdapter ? $cacheAdapter : new ArrayAdapter(0, false); |
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} |
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/** |
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* @param string $alias |
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* |
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* @return \GraphQL\Type\Definition\Type |
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*/ |
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public function resolve($alias) |
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{ |
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if (null === $alias) { |
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return; |
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} |
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$item = $this->cacheAdapter->getItem(md5($alias)); |
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if (!$item->isHit()) { |
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$type = $this->string2Type($alias); |
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$item->set($type); |
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$this->cacheAdapter->save($item); |
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} |
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return $item->get(); |
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} |
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private function string2Type($alias) |
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{ |
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if (false !== ($type = $this->wrapTypeIfNeeded($alias))) { |
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return $type; |
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} |
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return $this->baseType($alias); |
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} |
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private function baseType($alias) |
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{ |
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$type = $this->getSolution($alias); |
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if (null !== $type) { |
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return $type; |
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} |
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throw new UnresolvableException( |
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sprintf('Unknown type with alias "%s" (verified service tag)', $alias) |
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); |
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} |
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private function wrapTypeIfNeeded($alias) |
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{ |
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// Non-Null |
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if ('!' === $alias[strlen($alias) - 1]) { |
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return Type::nonNull($this->string2Type(substr($alias, 0, -1))); |
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} |
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// List |
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if ($this->hasNeedListOfWrapper($alias)) { |
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return Type::listOf($this->string2Type(substr($alias, 1, -1))); |
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} |
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return false; |
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} |
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private function hasNeedListOfWrapper($alias) |
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{ |
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if ('[' === $alias[0]) { |
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$got = $alias[strlen($alias) - 1]; |
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if (']' !== $got) { |
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throw new UnresolvableException( |
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sprintf('Malformed ListOf wrapper type "%s" expected "]" but got .', $alias, json_encode($got)) |
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); |
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} |
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return true; |
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} |
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return false; |
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} |
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protected function postLoadSolution($solution) |
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{ |
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// also add solution with real type name if needed for typeLoader when using autoMapping |
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if ($solution && !isset($this->getSolutions()[$solution->name])) { |
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$this->addSolution($solution->name, function () use ($solution) { |
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return $solution; |
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}); |
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} |
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} |
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protected function supportedSolutionClass() |
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{ |
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return Type::class; |
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} |
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} |
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overblog /
GraphQLBundle
