Digia\GraphQL\Validation\Rule\SingleFieldSubscriptionsRule::enterNode()

Complexity

Conditions	5
Paths	5

Size

Total Lines	20
Code Lines	11

Duplication

Lines	0
Ratio	0 %

Importance

Changes

0

<?php
    public function enterNode(NodeInterface $node): ?NodeInterface
    {
        if ($node instanceof OperationDefinitionNode) {
            if ($node->getOperation() === 'subscription') {
                $selectionSet = $node->getSelectionSet();
                if (null !== $selectionSet) {
                    $selections = $selectionSet->getSelections();
                    if (\count($selections) !== 1) {
                        $this->validationContext->reportError(
                            new ValidationException(
                                singleFieldOnlyMessage((string)$node),
                                \array_slice($selections, 1)
                            )
                        );
                    }
                }
            }
        }

        return $node;
    }