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<?php |
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namespace Drupal\graphql\GraphQL\Execution; |
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use Drupal\Core\Cache\RefinableCacheableDependencyInterface; |
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use Drupal\Core\Cache\RefinableCacheableDependencyTrait; |
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use GraphQL\Type\Definition\ResolveInfo; |
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class ResolveContext implements RefinableCacheableDependencyInterface { |
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use RefinableCacheableDependencyTrait; |
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/** |
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* Read-only list of global values. |
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* |
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* @var array |
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*/ |
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protected $globals; |
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/** |
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* The context stack. |
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* |
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* @var array |
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*/ |
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protected $contexts = []; |
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/** |
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* ResolveContext constructor. |
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* |
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* @param array $globals |
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* List of global values to expose to field resolvers. |
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*/ |
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public function __construct(array $globals = []) { |
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$this->globals = $globals; |
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} |
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/** |
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* Get a contextual value for the current field. |
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* |
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* Allows field resolvers to inherit contextual values from their ancestors. |
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* |
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* @param string $name |
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* The name of the context. |
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* @param \GraphQL\Type\Definition\ResolveInfo $info |
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* The resolve info object. |
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* @param mixed $default |
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* An arbitrary default value in case the context is not set. |
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* |
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* @return mixed |
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* The current value of the given context or the given default value if the |
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* context wasn't set. |
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*/ |
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public function getContext($name, ResolveInfo $info, $default = NULL) { |
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$operation = isset($info->operation->name->value) ? $info->operation->name->value : $info->operation->operation; |
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$path = $info->path; |
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do { |
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$key = implode('.', $path); |
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if (isset($this->contexts[$operation][$key][$name])) { |
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return $this->contexts[$operation][$key][$name]; |
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} |
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} while (array_pop($path) && !empty($path)); |
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return $default; |
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} |
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/** |
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* Sets a contextual value for the current field and its decendents. |
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* |
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* Allows field resolvers to set contextual values which can be inherited by |
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* their descendents. |
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* |
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* @param string $name |
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* The name of the context. |
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* @param $value |
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* The value of the context. |
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* @param \GraphQL\Type\Definition\ResolveInfo $info |
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* The resolve info object. |
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* |
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* @return $this |
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*/ |
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public function setContext($name, $value, ResolveInfo $info) { |
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$operation = isset($info->operation->name->value) ? $info->operation->name->value : $info->operation->operation; |
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$key = implode('.', $info->path); |
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$this->contexts[$operation][$key][$name] = $value; |
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return $this; |
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} |
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/** |
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* Retrieve a global/static parameter value. |
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* |
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* @param string $name |
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* The name of the global parameter. |
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* @param mixed $default |
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* An arbitrary default value in case the context is not set. |
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* |
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* @return mixed|null |
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* The requested global parameter value or the given default value if the |
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* parameter is not set. |
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*/ |
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public function getGlobal($name, $default = NULL) { |
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if (isset($this->globals[$name])) { |
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return $this->globals[$name]; |
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} |
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return $default; |
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} |
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} |
drupal-graphql /
graphql
