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".

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,