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<?php |
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namespace Drupal\graphql\Plugin\GraphQL; |
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use Drupal\Component\Plugin\Exception\InvalidPluginDefinitionException; |
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use Drupal\Component\Plugin\PluginManagerInterface; |
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class SchemaBuilder { |
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/** |
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* Static cache of type system plugin instances. |
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* |
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* @var \Drupal\graphql\Plugin\GraphQL\TypeSystemPluginInterface |
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*/ |
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protected $instances = []; |
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/** |
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* Static cache of plugin definitions. |
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* |
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* @var array |
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*/ |
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protected $definitions; |
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/** |
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* List of registered type system plugin managers. |
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* |
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* @var \Drupal\Component\Plugin\PluginManagerInterface[] |
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*/ |
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protected $pluginManagers; |
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/** |
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* SchemaBuilder constructor. |
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* |
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* @param \Drupal\Component\Plugin\PluginManagerInterface[] $pluginManagers |
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* List of type system plugin managers. |
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*/ |
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public function __construct(array $pluginManagers) { |
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$this->pluginManagers = $pluginManagers; |
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} |
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/** |
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* Returns the list of sorted plugin definitions. |
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* |
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* @return array |
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* The list of sorted plugin definitions. |
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*/ |
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protected function getDefinitions() { |
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if ($this->definitions == NULL) { |
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foreach ($this->pluginManagers as $manager) { |
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foreach ($manager->getDefinitions() as $pluginId => $definition) { |
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$this->definitions[] = [ |
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'id' => $pluginId, |
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'type' => $definition['pluginType'], |
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'weight' => $definition['weight'], |
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'manager' => $manager, |
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'definition' => $definition, |
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]; |
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} |
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} |
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uasort($this->definitions, '\Drupal\Component\Utility\SortArray::sortByWeightElement'); |
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$this->definitions = array_reverse($this->definitions); |
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} |
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return $this->definitions; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function find(callable $selector, array $types, $invert = FALSE) { |
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$instances = []; |
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foreach ($this->getDefinitions() as $index => $definition) { |
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$name = $definition['definition']['name']; |
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if (empty($name)) { |
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throw new InvalidPluginDefinitionException('Invalid GraphQL plugin definition. No name defined.'); |
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} |
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if (!array_key_exists($name, $instances) && in_array($definition['definition']['pluginType'], $types)) { |
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if ((($invert && !$selector($definition['definition'])) || $selector($definition['definition']))) { |
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$instances[$name] = $this->getInstance($definition['manager'], $definition['type'], $definition['id']); |
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} |
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} |
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} |
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return $instances; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function findByName($name, array $types) { |
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$result = $this->find(function($definition) use ($name) { |
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return $definition['name'] === $name; |
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}, $types); |
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if (empty($result)) { |
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throw new InvalidPluginDefinitionException(sprintf('GraphQL plugin with name %s could not be found.', $name)); |
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} |
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return array_pop($result); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function findByDataType($dataType, array $types = [ |
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GRAPHQL_UNION_TYPE_PLUGIN, |
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GRAPHQL_TYPE_PLUGIN, |
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GRAPHQL_INTERFACE_PLUGIN, |
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GRAPHQL_SCALAR_PLUGIN, |
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]) { |
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$chain = explode(':', $dataType); |
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while ($chain) { |
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$dataType = implode(':', $chain); |
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$types = $this->find(function($definition) use ($dataType) { |
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return isset($definition['data_type']) && $definition['data_type'] == $dataType; |
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}, $types); |
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if (!empty($types)) { |
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return array_pop($types); |
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} |
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array_pop($chain); |
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} |
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return NULL; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function getMutations() { |
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return $this->find(function() { |
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return TRUE; |
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}, [GRAPHQL_MUTATION_PLUGIN]); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function getRootFields() { |
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// Retrieve the list of fields that are explicitly attached to a type. |
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$attachedFields = array_reduce(array_filter(array_map(function($definition) { |
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return array_key_exists('fields', $definition['definition']) ? $definition['definition']['fields'] : NULL; |
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}, $this->getDefinitions())), 'array_merge', []); |
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// Retrieve the list of fields that are not attached in any way or |
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// explicitly attached to the artificial "Root" type. |
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return $this->find(function($definition) use ($attachedFields) { |
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return (!in_array($definition['name'], $attachedFields) && empty($definition['parents'])) || in_array('Root', $definition['parents']); |
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}, [GRAPHQL_FIELD_PLUGIN]); |
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} |
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protected function getInstance(PluginManagerInterface $manager, $pluginType, $pluginId) { |
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if (!isset($this->instances[$pluginType][$pluginId])) { |
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// Initialize the static cache array if necessary. |
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$this->instances[$pluginType] = isset($this->instances[$pluginType]) ? $this->instances[$pluginType] : []; |
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// We do not allow plugin configuration for now. |
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$instance = $manager->createInstance($pluginId); |
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if (empty($instance)) { |
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throw new \LogicException(sprintf('Could not instantiate plugin %s of type %s.', $pluginId, $pluginType)); |
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} |
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if (!$instance instanceof TypeSystemPluginInterface) { |
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throw new \LogicException(sprintf('Plugin %s of type %s does not implement \Drupal\graphql\Plugin\GraphQL\TypeSystemPluginInterface.', $pluginId, $pluginType)); |
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} |
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// Prevent circular dependencies by building the type after constructing the plugin instance. |
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$this->instances[$pluginType][$pluginId] = $instance; |
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$this->instances[$pluginType][$pluginId]->buildConfig($this); |
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} |
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return $this->instances[$pluginType][$pluginId]; |
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} |
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} |
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drupal-graphql /
graphql
This check marks implicit conversions of arrays to boolean values in a comparison. While in PHP an empty array is considered to be equal (but not identical) to false, this is not always apparent.
Consider making the comparison explicit by using
empty(..)or! empty(...)instead.