Trait PrimaryKeyArity

pub trait PrimaryKeyArity {
    const ARITY: usize;
}

How many columns this Primary Key comprises

Required Associated Constants

const ARITY: usize

Arity of the Primary Key

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<T1: TryGetableMany> PrimaryKeyArity for (T1,)

const ARITY: usize = 1usize

impl<T1: TryGetableMany, T2: TryGetableMany> PrimaryKeyArity for (T1, T2)

const ARITY: usize = 2usize

impl<T1: TryGetableMany, T2: TryGetableMany, T3: TryGetableMany> PrimaryKeyArity for (T1, T2, T3)

const ARITY: usize = 3usize

impl<T1: TryGetableMany, T2: TryGetableMany, T3: TryGetableMany, T4: TryGetableMany> PrimaryKeyArity for (T1, T2, T3, T4)

const ARITY: usize = 4usize

impl<T1: TryGetableMany, T2: TryGetableMany, T3: TryGetableMany, T4: TryGetableMany, T5: TryGetableMany> PrimaryKeyArity for (T1, T2, T3, T4, T5)

const ARITY: usize = 5usize

impl<T1: TryGetableMany, T2: TryGetableMany, T3: TryGetableMany, T4: TryGetableMany, T5: TryGetableMany, T6: TryGetableMany> PrimaryKeyArity for (T1, T2, T3, T4, T5, T6)

const ARITY: usize = 6usize

impl<T1: TryGetableMany, T2: TryGetableMany, T3: TryGetableMany, T4: TryGetableMany, T5: TryGetableMany, T6: TryGetableMany, T7: TryGetableMany> PrimaryKeyArity for (T1, T2, T3, T4, T5, T6, T7)

const ARITY: usize = 7usize

impl<T1: TryGetableMany, T2: TryGetableMany, T3: TryGetableMany, T4: TryGetableMany, T5: TryGetableMany, T6: TryGetableMany, T7: TryGetableMany, T8: TryGetableMany> PrimaryKeyArity for (T1, T2, T3, T4, T5, T6, T7, T8)

const ARITY: usize = 8usize

impl<T1: TryGetableMany, T2: TryGetableMany, T3: TryGetableMany, T4: TryGetableMany, T5: TryGetableMany, T6: TryGetableMany, T7: TryGetableMany, T8: TryGetableMany, T9: TryGetableMany> PrimaryKeyArity for (T1, T2, T3, T4, T5, T6, T7, T8, T9)

const ARITY: usize = 9usize

impl<T1: TryGetableMany, T2: TryGetableMany, T3: TryGetableMany, T4: TryGetableMany, T5: TryGetableMany, T6: TryGetableMany, T7: TryGetableMany, T8: TryGetableMany, T9: TryGetableMany, T10: TryGetableMany> PrimaryKeyArity for (T1, T2, T3, T4, T5, T6, T7, T8, T9, T10)

const ARITY: usize = 10usize

impl<T1: TryGetableMany, T2: TryGetableMany, T3: TryGetableMany, T4: TryGetableMany, T5: TryGetableMany, T6: TryGetableMany, T7: TryGetableMany, T8: TryGetableMany, T9: TryGetableMany, T10: TryGetableMany, T11: TryGetableMany> PrimaryKeyArity for (T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11)

const ARITY: usize = 11usize

impl<T1: TryGetableMany, T2: TryGetableMany, T3: TryGetableMany, T4: TryGetableMany, T5: TryGetableMany, T6: TryGetableMany, T7: TryGetableMany, T8: TryGetableMany, T9: TryGetableMany, T10: TryGetableMany, T11: TryGetableMany, T12: TryGetableMany> PrimaryKeyArity for (T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12)

const ARITY: usize = 12usize

Implementors

impl<V> PrimaryKeyArity for V

where V: TryGetable,

const ARITY: usize = 1usize