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<?php |
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namespace Overblog\GraphQLBundle\Resolver; |
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class ResolverMap implements ResolverMapInterface |
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{ |
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/** @var array[] */ |
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private $loadedMap; |
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/** @var bool */ |
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private $isMapLoaded = false; |
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/** @var bool[] */ |
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private $memorized = []; |
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/** |
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* Resolvers map. |
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* |
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* @return callable[] |
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*/ |
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protected function map() |
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{ |
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throw new \LogicException(sprintf('You must override the %s::map() method.', get_class($this))); |
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} |
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private function getLoadedMap() |
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{ |
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if (!$this->isMapLoaded) { |
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$this->checkMap($map = $this->map()); |
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$this->loadedMap = $map; |
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$this->isMapLoaded = true; |
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} |
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return $this->loadedMap; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function resolve($typeName, $fieldName) |
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{ |
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$loadedMap = $this->getLoadedMap(); |
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if (!$this->isResolvable($typeName, $fieldName)) { |
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throw new UnresolvableException(sprintf('Field "%s.%s" could not be resolved.', $typeName, $fieldName)); |
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} |
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return $loadedMap[$typeName][$fieldName]; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function isResolvable($typeName, $fieldName) |
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{ |
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$key = $typeName.'.'.$fieldName; |
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if (!isset($this->memorized[$key])) { |
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$loadedMap = $this->getLoadedMap(); |
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$this->memorized[$key] = isset($loadedMap[$typeName]) && array_key_exists($fieldName, $loadedMap[$typeName]); |
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} |
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return $this->memorized[$key]; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function covered($typeName = null) |
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{ |
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$loadedMap = $this->getLoadedMap(); |
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$covered = []; |
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$resolvers = []; |
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if (null === $typeName) { |
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$resolvers = $loadedMap; |
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} elseif (isset($loadedMap[$typeName])) { |
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$resolvers = $loadedMap[$typeName]; |
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} |
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foreach ($resolvers as $key => $value) { |
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$covered[] = $key; |
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} |
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return $covered; |
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} |
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private function checkMap($map) |
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{ |
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if (!is_array($map) && !($map instanceof \ArrayAccess && $map instanceof \Traversable)) { |
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throw new \RuntimeException(sprintf( |
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'%s::map() should return an array or an instance of \ArrayAccess and \Traversable but got "%s".', |
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get_class($this), |
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is_object($map) ? get_class($map) : gettype($map) |
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)); |
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} |
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} |
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} |
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overblog /
GraphQLBundle
