Trait FromColumn 

pub trait FromColumn: Sized {
    const EXPECTED: &'static str;

    // Required method
    fn read(row: &Row<'_>, index: usize) -> Result<Self, DbError>;
}

Required Associated Constants

const EXPECTED: &'static str

Required Methods

fn read(row: &Row<'_>, index: usize) -> Result<Self, DbError>

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementations on Foreign Types

impl FromColumn for String

const EXPECTED: &'static str = "TEXT"

fn read(row: &Row<'_>, index: usize) -> Result<Self, DbError>

impl FromColumn for Vec<u8>

const EXPECTED: &'static str = "BLOB"

fn read(row: &Row<'_>, index: usize) -> Result<Self, DbError>

impl FromColumn for f64

const EXPECTED: &'static str = "REAL"

fn read(row: &Row<'_>, index: usize) -> Result<Self, DbError>

impl FromColumn for i64

const EXPECTED: &'static str = "INTEGER"

fn read(row: &Row<'_>, index: usize) -> Result<Self, DbError>

impl<T: FromColumn> FromColumn for Option<T>

const EXPECTED: &'static str = T::EXPECTED

fn read(row: &Row<'_>, index: usize) -> Result<Self, DbError>

Implementors

impl FromColumn for TextLen

const EXPECTED: &'static str = "TEXT"