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<?php |
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namespace Digia\GraphQL\Validation\Rule; |
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use Digia\GraphQL\Error\ValidationException; |
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use Digia\GraphQL\Language\AST\Node\FieldNode; |
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use Digia\GraphQL\Language\AST\Node\InterfacesTrait; |
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use Digia\GraphQL\Language\AST\Node\NodeInterface; |
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use Digia\GraphQL\Type\Definition\AbstractTypeInterface; |
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use Digia\GraphQL\Type\Definition\FieldsTrait; |
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use Digia\GraphQL\Type\Definition\InterfaceType; |
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use Digia\GraphQL\Type\Definition\NameTrait; |
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use Digia\GraphQL\Type\Definition\ObjectType; |
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use Digia\GraphQL\Type\Definition\OutputTypeInterface; |
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use Digia\GraphQL\Type\Definition\TypeInterface; |
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use Digia\GraphQL\Type\SchemaInterface; |
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use function Digia\GraphQL\Util\suggestionList; |
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class FieldOnCorrectTypeRule extends AbstractRule |
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{ |
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/** |
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* @inheritdoc |
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*/ |
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public function enterNode(NodeInterface $node): ?NodeInterface |
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{ |
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if ($node instanceof FieldNode) { |
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$type = $this->context->getParentType(); |
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if (null !== $type && $type instanceof OutputTypeInterface) { |
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$fieldDefinition = $this->context->getFieldDefinition(); |
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if (null === $fieldDefinition) { |
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$schema = $this->context->getSchema(); |
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$fieldName = $node->getNameValue(); |
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$suggestedTypeNames = getSuggestedTypeNames($schema, $type, $fieldName); |
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$suggestedFieldNames = count($suggestedTypeNames) !== 0 |
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? [] |
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: getSuggestedFieldNames($type, $fieldName); |
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$this->context->reportError( |
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new ValidationException( |
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undefinedFieldMessage( |
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$fieldName, |
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(string)$type, |
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$suggestedTypeNames, |
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$suggestedFieldNames |
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), |
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[$node] |
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) |
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); |
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} |
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} |
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} |
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return $node; |
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} |
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} |
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/** |
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* Go through all of the implementations of type, as well as the interfaces |
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* that they implement. If any of those types include the provided field, |
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* suggest them, sorted by how often the type is referenced, starting |
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* with Interfaces. |
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* |
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* @param SchemaInterface $schema |
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* @param TypeInterface $type |
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* @param string $fieldName |
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* @return array |
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* @throws \Exception |
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*/ |
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function getSuggestedTypeNames(SchemaInterface $schema, TypeInterface $type, string $fieldName): array |
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{ |
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if (!$type instanceof AbstractTypeInterface) { |
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// Otherwise, must be an Object type, which does not have possible fields. |
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return []; |
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} |
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$suggestedObjectTypes = []; |
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$interfaceUsageCount = []; |
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/** @var FieldsTrait|NameTrait|InterfacesTrait $possibleType */ |
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foreach ($schema->getPossibleTypes($type) as $possibleType) { |
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$typeFields = $possibleType->getFields(); |
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if (!isset($typeFields[$fieldName])) { |
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break; |
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} |
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$suggestedObjectTypes[] = $possibleType->getName(); |
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/** @var InterfaceType $possibleInterface */ |
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foreach ($possibleType->getInterfaces() as $possibleInterface) { |
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$interfaceFields = $possibleInterface->getFields(); |
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if (!isset($interfaceFields[$fieldName])) { |
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break; |
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} |
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$interfaceName = $possibleInterface->getName(); |
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$interfaceUsageCount[$interfaceName] = ($interfaceUsageCount[$interfaceName] ?? 0) + 1; |
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} |
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} |
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$suggestedInterfaceTypes = array_keys($interfaceUsageCount); |
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uasort($suggestedInterfaceTypes, function ($a, $b) use ($interfaceUsageCount) { |
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return $interfaceUsageCount[$b] - $interfaceUsageCount[$a]; |
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}); |
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return array_merge($suggestedInterfaceTypes, $suggestedObjectTypes); |
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} |
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/** |
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* For the field name provided, determine if there are any similar field names |
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* that may be the result of a typo. |
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* |
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* @param OutputTypeInterface $type |
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* @param string $fieldName |
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* @return array |
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* @throws \Exception |
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*/ |
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function getSuggestedFieldNames(OutputTypeInterface $type, string $fieldName): array |
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{ |
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if (!($type instanceof ObjectType || $type instanceof InterfaceType)) { |
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// Otherwise, must be a Union type, which does not define fields. |
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return []; |
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} |
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/** @var FieldsTrait $type */ |
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$possibleFieldNames = array_keys($type->getFields()); |
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return suggestionList($fieldName, $possibleFieldNames); |
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} |
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digiaonline /
graphql-php
