Trait EdgedbComposableSelector

pub trait EdgedbComposableSelector {
    const RESULT_TYPE: ComposableQueryResultKind;

    // Required method
    fn format_selector(fmt: &mut impl Write) -> Result<(), Error>;

    // Provided method
    fn format_subquery(fmt: &mut impl Write) -> Result<(), Error> { ... }
}

Derivable trait. Must have named fields, each is either another selector, or a primitive, or a Vec/Option/NonEmpty of those.

Required Associated Constants

const RESULT_TYPE: ComposableQueryResultKind

Required Methods

fn format_selector(fmt: &mut impl Write) -> Result<(), Error>

should’t add { and } around the selector

Provided Methods

fn format_subquery(fmt: &mut impl Write) -> Result<(), Error>

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementations on Foreign Types

impl<T: EdgedbComposableSelector> EdgedbComposableSelector for Option<T>

const RESULT_TYPE: ComposableQueryResultKind = T::RESULT_TYPE

fn format_selector(fmt: &mut impl Write) -> Result<(), Error>

impl<T: EdgedbComposableSelector> EdgedbComposableSelector for Vec<T>

const RESULT_TYPE: ComposableQueryResultKind = T::RESULT_TYPE

fn format_selector(fmt: &mut impl Write) -> Result<(), Error>

impl<T: EdgedbComposableSelector> EdgedbComposableSelector for NonEmpty<T>

const RESULT_TYPE: ComposableQueryResultKind = T::RESULT_TYPE

fn format_selector(fmt: &mut impl Write) -> Result<(), Error>

Implementors

impl<T: EdgedbPrim> EdgedbComposableSelector for T

const RESULT_TYPE: ComposableQueryResultKind = ComposableQueryResultKind::Field

impl<T: EdgedbComposableSelector + EdgedbObject> EdgedbComposableSelector for Ref<T>

const RESULT_TYPE: ComposableQueryResultKind = ComposableQueryResultKind::Selector