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<?php |
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declare(strict_types=1); |
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namespace GraphQL\Doctrine; |
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use ArrayAccess; |
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use Closure; |
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use GraphQL\Type\Definition\ResolveInfo; |
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use ReflectionClass; |
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use ReflectionMethod; |
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/** |
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* A field resolver that will allow access to public properties and getter. |
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* Arguments, if any, will be forwarded as is to the method. |
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*/ |
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class DefaultFieldResolver |
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{ |
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public function __invoke($source, $args, $context, ResolveInfo $info) |
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{ |
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$fieldName = $info->fieldName; |
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$property = null; |
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if (is_object($source)) { |
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$property = $this->resolveObject($source, $args, $fieldName); |
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} elseif (is_array($source) || $source instanceof ArrayAccess) { |
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$property = $this->resolveArray($source, $fieldName); |
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} |
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return $property instanceof Closure ? $property($source, $args, $context) : $property; |
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} |
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/** |
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* Resolve for an object |
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* @param mixed $source |
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* @param mixed $args |
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* @param string $fieldName |
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* @return mixed |
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*/ |
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private function resolveObject($source, $args, string $fieldName) |
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{ |
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$class = new ReflectionClass($source); |
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$getter = $this->getGetter($fieldName); |
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if ($class->hasMethod($getter) && $class->getMethod($getter)->getModifiers() & ReflectionMethod::IS_PUBLIC) { |
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$args = (array) $args; |
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return $source->$getter(...$args); |
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} elseif (isset($source->{$fieldName})) { |
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return $source->{$fieldName}; |
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} |
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return null; |
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} |
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/** |
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* Resolve for an array |
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* @param mixed $source |
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* @param string $fieldName |
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* @return mixed |
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*/ |
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private function resolveArray($source, string $fieldName) |
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{ |
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return $source[$fieldName] ?? null; |
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} |
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/** |
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* If not isser, make it a getter |
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* @param string $fieldName |
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* @return string |
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*/ |
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private function getGetter(string $fieldName): string |
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{ |
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if (preg_match('~^(is|has)[A-Z]~', $fieldName)) { |
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return $fieldName; |
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} |
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return 'get' . ucfirst($fieldName); |
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} |
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} |
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Ecodev /
graphql-doctrine
