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<?php |
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namespace Digia\GraphQL\Execution; |
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use Digia\GraphQL\Error\ErrorHandlerInterface; |
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use Digia\GraphQL\Error\ExecutionException; |
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use Digia\GraphQL\Language\Node\DocumentNode; |
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use Digia\GraphQL\Language\Node\FragmentDefinitionNode; |
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use Digia\GraphQL\Language\Node\FragmentSpreadNode; |
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use Digia\GraphQL\Language\Node\OperationDefinitionNode; |
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use Digia\GraphQL\Schema\Schema; |
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class Execution implements ExecutionInterface |
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{ |
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/** |
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* @var ErrorHandlerInterface |
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*/ |
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private $errorHandler; |
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/** |
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* Execution constructor. |
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* @param ErrorHandlerInterface $errorHandler |
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*/ |
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public function __construct(ErrorHandlerInterface $errorHandler) |
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{ |
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$this->errorHandler = $errorHandler; |
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} |
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/** |
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* @param Schema $schema |
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* @param DocumentNode $documentNode |
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* @param mixed $rootValue |
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* @param mixed $contextValue |
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* @param array $variableValues |
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* @param null|string $operationName |
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* @param callable|null $fieldResolver |
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* @return ExecutionResult |
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* @throws \Throwable |
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*/ |
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public function execute( |
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Schema $schema, |
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DocumentNode $documentNode, |
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$rootValue = null, |
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$contextValue = null, |
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array $variableValues = [], |
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?string $operationName = null, |
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?callable $fieldResolver = null |
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): ExecutionResult { |
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try { |
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$context = $this->createContext( |
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$schema, |
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$documentNode, |
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$rootValue, |
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$contextValue, |
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$variableValues, |
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$operationName, |
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$fieldResolver |
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); |
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// Return early errors if execution context failed. |
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if (!empty($context->getErrors())) { |
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return new ExecutionResult(null, $context->getErrors()); |
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} |
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} catch (ExecutionException $error) { |
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return new ExecutionResult(null, [$error]); |
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} |
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$data = $this->createExecutor($context)->execute(); |
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$errors = $context->getErrors(); |
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return new ExecutionResult($data, $errors); |
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} |
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/** |
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* @param Schema $schema |
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* @param DocumentNode $documentNode |
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* @param mixed $rootValue |
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* @param mixed $contextValue |
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* @param mixed $rawVariableValues |
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* @param null|string $operationName |
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* @param callable|null $fieldResolver |
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* @return ExecutionContext |
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* @throws ExecutionException |
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* @throws \Exception |
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*/ |
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protected function createContext( |
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Schema $schema, |
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DocumentNode $documentNode, |
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$rootValue, |
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$contextValue, |
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$rawVariableValues, |
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?string $operationName = null, |
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?callable $fieldResolver = null |
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): ExecutionContext { |
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$errors = []; |
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$fragments = []; |
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$operation = null; |
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foreach ($documentNode->getDefinitions() as $definition) { |
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if ($definition instanceof OperationDefinitionNode) { |
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if (null === $operationName && $operation) { |
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throw new ExecutionException( |
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'Must provide operation name if query contains multiple operations.' |
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); |
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} |
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if (null === $operationName || $definition->getNameValue() === $operationName) { |
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$operation = $definition; |
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} |
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continue; |
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} |
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if ($definition instanceof FragmentDefinitionNode || $definition instanceof FragmentSpreadNode) { |
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$fragments[$definition->getNameValue()] = $definition; |
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continue; |
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} |
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} |
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if (null === $operation) { |
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if (null !== $operationName) { |
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throw new ExecutionException(sprintf('Unknown operation named "%s".', $operationName)); |
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} |
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throw new ExecutionException('Must provide an operation.'); |
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} |
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$coercedVariableValues = coerceVariableValues( |
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$schema, |
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$operation->getVariableDefinitions(), |
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$rawVariableValues |
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); |
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$variableValues = $coercedVariableValues->getValue(); |
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if ($coercedVariableValues->hasErrors()) { |
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$errors = $coercedVariableValues->getErrors(); |
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} |
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return new ExecutionContext( |
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$schema, |
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$fragments, |
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$rootValue, |
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$contextValue, |
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$variableValues, |
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$fieldResolver, |
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$operation, |
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$errors |
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); |
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} |
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/** |
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* @param ExecutionContext $context |
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* @return Executor |
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*/ |
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protected function createExecutor(ExecutionContext $context): Executor |
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{ |
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return new Executor($context, new FieldCollector($context), $this->errorHandler); |
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} |
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} |
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digiaonline /
graphql-php
