Struct warpgrapher::engine::objects::Node

pub struct Node<GlobalCtx, RequestCtx> where
    GlobalCtx: GlobalContext,
    RequestCtx: Debug + RequestContext,  { /* fields omitted */ }

Represents a node in the graph data structure for auto-generated CRUD operations and custom resolvers.

Examples

fn custom_resolve(facade: ResolverFacade<(), ()>) -> ExecutionResult {
    let typename = "User";

    let mut props = HashMap::new();
    props.insert("role".to_string(), Value::String("Admin".to_string()));

    let n = facade.create_node(typename, props);

    facade.resolve_node(&n)
}

Implementations

impl<GlobalCtx, RequestCtx> Node<GlobalCtx, RequestCtx> where
    GlobalCtx: GlobalContext,
    RequestCtx: RequestContext, 

pub fn fields(&self) -> &HashMap<String, Value>

Returns the fields of a Node.

Example

use warpgrapher::engine::objects::Node;

fn handle_node(n: Node<(),()>) {
    let properties = n.fields();
}

Trait Implementations

impl<GlobalCtx: Clone, RequestCtx: Clone> Clone for Node<GlobalCtx, RequestCtx> where
    GlobalCtx: GlobalContext,
    RequestCtx: Debug + RequestContext, 

fn clone(&self) -> Node<GlobalCtx, RequestCtx>

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<GlobalCtx: Debug, RequestCtx: Debug> Debug for Node<GlobalCtx, RequestCtx> where
    GlobalCtx: GlobalContext,
    RequestCtx: Debug + RequestContext, 

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<GlobalCtx, RequestCtx> GraphQLType<DefaultScalarValue> for Node<GlobalCtx, RequestCtx> where
    GlobalCtx: GlobalContext,
    RequestCtx: RequestContext, 

type Context = GraphQLContext<GlobalCtx, RequestCtx>

The expected context type for this GraphQL type

type TypeInfo = Info

Type that may carry additional schema information

fn name(info: &Self::TypeInfo) -> Option<&str>

The name of the GraphQL type to expose.

fn concrete_type_name(
    &self,
    _context: &Self::Context,
    info: &Self::TypeInfo
) -> String

Return the concrete type name for this instance/union.

fn meta<'r>(info: &Self::TypeInfo, registry: &mut Registry<'r>) -> MetaType<'r> where
    DefaultScalarValue: 'r, 

The meta type representing this GraphQL type.

fn resolve_field(
    &self,
    info: &Self::TypeInfo,
    field_name: &str,
    args: &Arguments<'_>,
    executor: &Executor<'_, Self::Context>
) -> ExecutionResult

Resolve the value of a single field on this type.

fn resolve_into_type(
    &self,
    info: &Self::TypeInfo,
    type_name: &str,
    _selection_set: Option<&[Selection<'_>]>,
    executor: &Executor<'_, Self::Context>
) -> ExecutionResult

Resolve this interface or union into a concrete type

fn resolve(
    &self,
    info: &Self::TypeInfo,
    selection_set: Option<&[Selection<'_, S>]>,
    executor: &Executor<'_, Self::Context, S>
) -> Value<S>

Resolve the provided selection set against the current object.