public function __construct(array $config)
{
Config::validate($config, ['name' => Config::STRING, 'fields' => Config::arrayOf(FieldDefinition::getDefinition(), Config::KEY_AS_NAME), 'resolveType' => Config::CALLBACK, 'description' => Config::STRING]);
$this->name = $config['name'];
$this->description = isset($config['description']) ? $config['description'] : null;
$this->_fields = !empty($config['fields']) ? FieldDefinition::createMap($config['fields']) : [];
$this->_resolveTypeFn = isset($config['resolveType']) ? $config['resolveType'] : null;
}
/**
* @return FieldDefinition[]
*/
public function getFields()
{
if (null === $this->fields) {
$this->fields = [];
$fields = isset($this->config['fields']) ? $this->config['fields'] : [];
$fields = is_callable($fields) ? call_user_func($fields) : $fields;
$this->fields = FieldDefinition::createMap($fields, $this->name);
}
return $this->fields;
}
public function __construct(array $config)
{
Config::validate($config, ['name' => Config::STRING | Config::REQUIRED, 'fields' => Config::arrayOf(FieldDefinition::getDefinition(), Config::KEY_AS_NAME), 'description' => Config::STRING, 'interfaces' => Config::arrayOf(Config::INTERFACE_TYPE), 'isTypeOf' => Config::CALLBACK]);
$this->name = $config['name'];
$this->description = isset($config['description']) ? $config['description'] : null;
if (isset($config['fields'])) {
$this->_fields = FieldDefinition::createMap($config['fields']);
}
$this->_interfaces = isset($config['interfaces']) ? $config['interfaces'] : [];
$this->_isTypeOf = isset($config['isTypeOf']) ? $config['isTypeOf'] : null;
if (!empty($this->_interfaces)) {
InterfaceType::addImplementationToInterfaces($this, $this->_interfaces);
}
}
public static function typeNameMetaFieldDef()
{
if (!isset(self::$map['__typename'])) {
self::$map['__typename'] = FieldDefinition::create(['name' => '__typename', 'type' => Type::nonNull(Type::string()), 'description' => 'The name of the current Object type at runtime.', 'args' => [], 'resolve' => function ($source, $args, $context, ResolveInfo $info) {
return $info->parentType->name;
}]);
}
return self::$map['__typename'];
}
/**
* Late instance initialization
*/
private function initialize()
{
if ($this->_initialized) {
return;
}
$config = $this->_config;
if (isset($config['fields']) && is_callable($config['fields'])) {
$config['fields'] = call_user_func($config['fields']);
}
if (isset($config['interfaces']) && is_callable($config['interfaces'])) {
$config['interfaces'] = call_user_func($config['interfaces']);
}
// Note: this validation is disabled by default, because it is resource-consuming
// TODO: add bin/validate script to check if schema is valid during development
Config::validate($this->_config, ['name' => Config::STRING | Config::REQUIRED, 'fields' => Config::arrayOf(FieldDefinition::getDefinition(), Config::KEY_AS_NAME), 'description' => Config::STRING, 'interfaces' => Config::arrayOf(Config::INTERFACE_TYPE), 'isTypeOf' => Config::CALLBACK, 'resolveField' => Config::CALLBACK]);
$this->_fields = FieldDefinition::createMap($config['fields']);
$this->_interfaces = isset($config['interfaces']) ? $config['interfaces'] : [];
$this->_isTypeOf = isset($config['isTypeOf']) ? $config['isTypeOf'] : null;
$this->_initialized = true;
}
/**
* Resolves the field on the given source object. In particular, this
* figures out the object that the field returns using the resolve function,
* then calls completeField to coerce scalars or execute the sub
* selection set for objects.
*/
private static function resolveFieldOrError(ExecutionContext $exeContext, ObjectType $parentType, $source, $fieldASTs, FieldDefinition $fieldDef)
{
$fieldAST = $fieldASTs[0];
$fieldType = $fieldDef->getType();
$resolveFn = $fieldDef->resolve ?: [__CLASS__, 'defaultResolveFn'];
// Build a JS object of arguments from the field.arguments AST, using the
// variables scope to fulfill any variable references.
// TODO: find a way to memoize, in case this field is within a Array type.
$args = Values::getArgumentValues($fieldDef->args, $fieldAST->arguments, $exeContext->variables);
try {
$result = call_user_func($resolveFn, $source, $args, $exeContext->root, $fieldAST, $fieldType, $parentType, $exeContext->schema);
} catch (\Exception $error) {
throw new Error($error->getMessage(), [$fieldAST], $error->getTrace());
}
return self::completeField($exeContext, $fieldType, $fieldASTs, $result);
}
