Trait QueryArg

pub trait QueryArg:
    Sized
    + Send
    + Sync {
    // Required methods
    fn encode_slot(&self, encoder: &mut Encoder<'_>) -> Result<(), Error>;
    fn check_descriptor(
        ctx: &DescriptorContext<'_>,
        pos: TypePos,
    ) -> Result<(), Error>;
}

A single argument for a query.

Required Methods

fn encode_slot(&self, encoder: &mut Encoder<'_>) -> Result<(), Error>

fn check_descriptor( ctx: &DescriptorContext<'_>, pos: TypePos, ) -> 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> QueryArg for Option<T>

where T: ScalarArg,

fn encode_slot(&self, enc: &mut Encoder<'_>) -> Result<(), Error>

fn check_descriptor( ctx: &DescriptorContext<'_>, pos: TypePos, ) -> Result<(), Error>

Implementors

impl<T> QueryArg for T

where T: ScalarArg,