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<?php |
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namespace Overblog\GraphQLBundle\Resolver; |
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abstract class AbstractResolver implements FluentResolverInterface |
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{ |
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/** @var array */ |
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private $solutions = []; |
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private $aliases = []; |
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/** @var array */ |
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private $solutionOptions = []; |
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/** @var array */ |
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private $fullyLoadedSolutions = []; |
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public function addSolution($id, $solutionOrFactory, array $aliases = [], array $options = []) |
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{ |
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$this->fullyLoadedSolutions[$id] = false; |
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$this->addAliases($id, $aliases); |
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$this->solutions[$id] = function () use ($id, $solutionOrFactory) { |
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$solution = $solutionOrFactory; |
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if (self::isSolutionFactory($solutionOrFactory)) { |
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if (!isset($solutionOrFactory[1])) { |
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$solutionOrFactory[1] = []; |
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} |
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$solution = call_user_func_array(...$solutionOrFactory); |
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} |
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$this->checkSolution($id, $solution); |
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return $solution; |
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}; |
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$this->solutionOptions[$id] = $options; |
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return $this; |
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} |
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public function hasSolution($id) |
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{ |
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$id = $this->resolveAlias($id); |
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return isset($this->solutions[$id]); |
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} |
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/** |
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* @param $id |
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* |
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* @return mixed |
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*/ |
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public function getSolution($id) |
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{ |
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return $this->loadSolution($id); |
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} |
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/** |
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* @return array |
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*/ |
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public function getSolutions() |
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{ |
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return $this->loadSolutions(); |
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} |
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public function getSolutionAliases($id) |
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{ |
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return array_keys($this->aliases, $id); |
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} |
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/** |
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* @param $id |
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* |
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* @return mixed |
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*/ |
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public function getSolutionOptions($id) |
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{ |
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$id = $this->resolveAlias($id); |
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return isset($this->solutionOptions[$id]) ? $this->solutionOptions[$id] : []; |
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} |
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/** |
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* @param string $id |
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* |
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* @return mixed |
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*/ |
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private function loadSolution($id) |
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{ |
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$id = $this->resolveAlias($id); |
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if (!$this->hasSolution($id)) { |
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return null; |
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} |
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if ($this->fullyLoadedSolutions[$id]) { |
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return $this->solutions[$id]; |
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} else { |
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$loader = $this->solutions[$id]; |
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$this->solutions[$id] = $loader(); |
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$this->fullyLoadedSolutions[$id] = true; |
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return $this->solutions[$id]; |
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} |
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} |
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private function addAliases($id, $aliases) |
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{ |
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foreach ($aliases as $alias) { |
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$this->aliases[$alias] = $id; |
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} |
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} |
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private static function isSolutionFactory($solutionOrFactory) |
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{ |
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return is_array($solutionOrFactory) && isset($solutionOrFactory[0]) && is_callable($solutionOrFactory[0]); |
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} |
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private function resolveAlias($alias) |
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{ |
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return isset($this->aliases[$alias]) ? $this->aliases[$alias] : $alias; |
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} |
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/** |
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* @return mixed[] |
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*/ |
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private function loadSolutions() |
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{ |
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foreach ($this->solutions as $name => &$solution) { |
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$solution = $this->loadSolution($name); |
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} |
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return $this->solutions; |
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} |
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/** |
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* @param mixed $solution |
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* |
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* @return bool |
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*/ |
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protected function supportsSolution($solution) |
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{ |
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$supportedClass = $this->supportedSolutionClass(); |
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return null === $supportedClass || $solution instanceof $supportedClass; |
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} |
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protected function checkSolution($id, $solution) |
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{ |
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if (!$this->supportsSolution($solution)) { |
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throw new UnsupportedResolverException( |
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sprintf('Resolver "%s" must be "%s" "%s" given.', $id, $this->supportedSolutionClass(), get_class($solution)) |
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); |
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} |
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} |
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/** |
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* default return null to accept mixed type. |
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* |
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* @return null|string supported class name |
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*/ |
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protected function supportedSolutionClass() |
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{ |
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return null; |
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} |
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} |
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overblog /
GraphQLBundle
