Trait edgedb_client::QueryResult

pub trait QueryResult: Sealed {
    type State;

    fn prepare(
        ctx: &DescriptorContext<'_>, 
        root_pos: TypePos
    ) -> Result<Self::State, Error>;
    fn decode(state: &mut Self::State, msg: &Bytes) -> Result<Self, Error>;
}

A trait representing single result from a query.

This is implemented for scalars and tuples. To receive a shape from EdgeDB derive Queryable for a structure. This will automatically implement QueryResult for you.

Required Associated Types

type State

Required Methods

fn prepare(
    ctx: &DescriptorContext<'_>,
    root_pos: TypePos
) -> Result<Self::State, Error>

fn decode(state: &mut Self::State, msg: &Bytes) -> Result<Self, Error>

Implementations on Foreign Types

impl QueryResult for Value

type State = Arc<dyn Codec + 'static>

fn prepare(
    ctx: &DescriptorContext<'_>,
    root_pos: TypePos
) -> Result<Arc<dyn Codec + 'static>, Error>

fn decode(
    codec: &mut Arc<dyn Codec + 'static>,
    msg: &Bytes
) -> Result<Value, Error>

Implementors

impl<T> QueryResult for T where
    T: Queryable, 

type State = Decoder