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<?php |
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namespace Digia\GraphQL\Validation\Rule; |
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use Digia\GraphQL\Language\Node\FragmentDefinitionNode; |
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use Digia\GraphQL\Language\Node\SelectionSetNode; |
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use Digia\GraphQL\Language\Node\VariableDefinitionNode; |
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use Digia\GraphQL\Language\Visitor\VisitorResult; |
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use Digia\GraphQL\Type\Definition\NonNullType; |
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use Digia\GraphQL\Validation\ValidationException; |
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use function Digia\GraphQL\Validation\variableDefaultValueNotAllowedMessage; |
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/** |
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* Variable's default value is allowed |
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* |
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* A GraphQL document is only valid if all variable default values are allowed |
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* due to a variable not being required. |
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*/ |
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class VariablesDefaultValueAllowedRule extends AbstractRule |
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{ |
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/** |
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* @inheritdoc |
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*/ |
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protected function enterSelectionSet(SelectionSetNode $node): VisitorResult |
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{ |
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return new VisitorResult(null); |
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} |
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/** |
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* @inheritdoc |
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*/ |
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protected function enterFragmentDefinition(FragmentDefinitionNode $node): VisitorResult |
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{ |
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return new VisitorResult(null); |
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} |
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/** |
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* @inheritdoc |
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*/ |
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protected function enterVariableDefinition(VariableDefinitionNode $node): VisitorResult |
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{ |
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$variable = $node->getVariable(); |
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$variableName = $variable->getNameValue(); |
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$defaultValue = $node->getDefaultValue(); |
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$type = $this->context->getInputType(); |
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if (null !== $defaultValue && $type instanceof NonNullType) { |
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$this->context->reportError( |
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new ValidationException( |
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variableDefaultValueNotAllowedMessage($variableName, $type, (string)$type->getOfType()), |
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[$defaultValue] |
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) |
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); |
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} |
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return new VisitorResult(null); // do not traverse further. |
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} |
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} |
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digiaonline /
graphql-php
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