Trait QueryArg 

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

A single argument for a query.

Required Methods

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

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

fn to_value(&self) -> Result<Value, 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 QueryArg for Vec<Value>

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

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

fn to_value(&self) -> Result<Value, Error>

impl<T: ScalarArg> QueryArg for Option<T>

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

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

fn to_value(&self) -> Result<Value, Error>

impl<T: ScalarArg> QueryArg for Vec<T>

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

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

fn to_value(&self) -> Result<Value, Error>

Implementors

impl QueryArg for Value

impl QueryArg for Range<Box<Value>>

impl<T: ScalarArg> QueryArg for T