Struct Roots 

pub struct Roots {
    pub query: Option<String>,
    pub mutation: Option<String>,
    pub subscription: Option<String>,
}

The root operation type names (Query / Mutation / Subscription), used to classify a type’s fields as root operations vs. plain object fields. Shared by the SDL and introspection loaders so that one rule lives in one place; each loader fills in whichever roots its source declares.

Fields

query: Option<String>

mutation: Option<String>

subscription: Option<String>

Implementations

impl Roots

pub fn field_kind(&self, type_name: &str) -> Kind

The Kind for a field defined on type_name: a root-operation kind if type_name is a root type, otherwise a plain object Kind::Field.

Trait Implementations

impl Default for Roots

fn default() -> Roots

Returns the “default value” for a type.