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<?php |
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declare(strict_types=1); |
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namespace GraphQL\Doctrine\Factory; |
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use GraphQL\Doctrine\Annotation\Argument; |
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use GraphQL\Doctrine\Annotation\Field; |
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use GraphQL\Doctrine\DocBlockReader; |
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use GraphQL\Doctrine\Exception; |
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use GraphQL\Type\Definition\Type; |
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use ReflectionMethod; |
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use ReflectionParameter; |
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/** |
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* A factory to create a configuration for all fields of an entity |
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*/ |
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class OutputFieldsConfigurationFactory extends AbstractFieldsConfigurationFactory |
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{ |
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protected function getMethodPattern(): string |
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{ |
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return '~^(get|is|has)[A-Z]~'; |
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} |
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/** |
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* Get the entire configuration for a method |
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* @param ReflectionMethod $method |
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* @throws Exception |
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* @return array |
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*/ |
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protected function methodToConfiguration(ReflectionMethod $method): ?array |
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{ |
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// First get user specified values |
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$field = $this->getFieldFromAnnotation($method); |
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$fieldName = lcfirst(preg_replace('~^get~', '', $method->getName())); |
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if (!$field->name) { |
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$field->name = $fieldName; |
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} |
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$docBlock = new DocBlockReader($method); |
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if (!$field->description) { |
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$field->description = $docBlock->getMethodDescription(); |
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} |
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if ($this->isIdentityField($fieldName)) { |
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$field->type = Type::nonNull(Type::id()); |
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} |
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// If still no type, look for docblock |
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if (!$field->type) { |
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$field->type = $this->getTypeFromDocBock($method, $docBlock); |
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} |
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// If still no type, look for type hint |
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if (!$field->type) { |
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$field->type = $this->getTypeFromReturnTypeHint($method, $fieldName); |
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} |
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// If still no args, look for type hint |
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$field->args = $this->getArgumentsFromTypeHint($method, $field->args, $docBlock); |
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// If still no type, cannot continue |
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if (!$field->type) { |
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throw new Exception('Could not find type for method ' . $this->getMethodFullName($method) . '. Either type hint the return value, or specify the type with `@API\Field` annotation.'); |
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} |
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return $field->toArray(); |
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} |
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/** |
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* Get a field from annotation, or an empty one |
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* All its types will be converted from string to real instance of Type |
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* |
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* @param ReflectionMethod $method |
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* @return Field |
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*/ |
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private function getFieldFromAnnotation(ReflectionMethod $method): Field |
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{ |
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$field = $this->getAnnotationReader()->getMethodAnnotation($method, Field::class) ?? new Field(); |
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$field->type = $this->getTypeFromPhpDeclaration($method, $field->type); |
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$args = []; |
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foreach ($field->args as $arg) { |
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$arg->type = $this->getTypeFromPhpDeclaration($method, $arg->type); |
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$args[$arg->name] = $arg; |
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} |
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$field->args = $args; |
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return $field; |
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} |
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/** |
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* Complete arguments configuration from existing type hints |
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* @param ReflectionMethod $method |
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* @param Argument[] $argsFromAnnotations |
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* @throws Exception |
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* @return array |
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*/ |
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private function getArgumentsFromTypeHint(ReflectionMethod $method, array $argsFromAnnotations, DocBlockReader $docBlock): array |
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{ |
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$args = []; |
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foreach ($method->getParameters() as $param) { |
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//Either get existing, or create new argument |
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$arg = $argsFromAnnotations[$param->getName()] ?? new Argument(); |
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$args[$param->getName()] = $arg; |
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$this->completeArgumentFromTypeHint($method, $param, $arg, $docBlock); |
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} |
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$extraAnnotations = array_diff(array_keys($argsFromAnnotations), array_keys($args)); |
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if ($extraAnnotations) { |
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throw new Exception('The following arguments were declared via `@API\Argument` annotation but do not match actual parameter names on method ' . $this->getMethodFullName($method) . '. Either rename or remove the annotations: ' . implode(', ', $extraAnnotations)); |
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} |
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return $args; |
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} |
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/** |
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* Complete a single argument from its type hint |
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* @param ReflectionMethod $method |
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* @param ReflectionParameter $param |
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* @param Argument $arg |
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*/ |
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private function completeArgumentFromTypeHint(ReflectionMethod $method, ReflectionParameter $param, Argument $arg, DocBlockReader $docBlock) |
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{ |
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if (!$arg->name) { |
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$arg->name = $param->getName(); |
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} |
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if (!$arg->description) { |
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$arg->description = $docBlock->getParameterDescription($param); |
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} |
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if (!isset($arg->defaultValue) && $param->isDefaultValueAvailable()) { |
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$arg->defaultValue = $param->getDefaultValue(); |
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} |
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if (!$arg->type) { |
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$typeDeclaration = $docBlock->getParameterType($param); |
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$this->throwIfArray($param, $typeDeclaration); |
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$arg->type = $this->getTypeFromPhpDeclaration($method, $typeDeclaration, true); |
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} |
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$type = $param->getType(); |
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if (!$arg->type && $type) { |
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$this->throwIfArray($param, (string) $type); |
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$arg->type = $this->refelectionTypeToType($type, true); |
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} |
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$arg->type = $this->nonNullIfHasDefault($param, $arg->type); |
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$this->throwIfNotInputType($param, $arg->type, 'Argument'); |
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} |
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/** |
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* Get a GraphQL type instance from dock block return type |
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* @param ReflectionMethod $method |
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* @param \GraphQL\Doctrine\DocBlockReader $docBlock |
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* @return Type|null |
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*/ |
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private function getTypeFromDocBock(ReflectionMethod $method, DocBlockReader $docBlock): ?Type |
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{ |
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$typeDeclaration = $docBlock->getReturnType(); |
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$blacklist = [ |
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'Collection', |
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'array', |
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]; |
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if ($typeDeclaration && !in_array($typeDeclaration, $blacklist, true)) { |
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return $this->getTypeFromPhpDeclaration($method, $typeDeclaration); |
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} |
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return null; |
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} |
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} |
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Ecodev /
graphql-doctrine
