Trait FromSql 

pub trait FromSql: Sized {
    // Required method
    fn column_result(value: ValueRef<'_>) -> Result<Self, FromSqlError>;
}

A trait for types that can be created from a SQLite value.

Required Methods

fn column_result(value: ValueRef<'_>) -> Result<Self, FromSqlError>

Converts SQLite value into Rust value.

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 FromSql for bool

fn column_result(value: ValueRef<'_>) -> Result<bool, FromSqlError>

impl FromSql for f32

fn column_result(value: ValueRef<'_>) -> Result<f32, FromSqlError>

impl FromSql for f64

fn column_result(value: ValueRef<'_>) -> Result<f64, FromSqlError>

impl FromSql for i8

fn column_result(value: ValueRef<'_>) -> Result<i8, FromSqlError>

impl FromSql for i16

fn column_result(value: ValueRef<'_>) -> Result<i16, FromSqlError>

impl FromSql for i32

fn column_result(value: ValueRef<'_>) -> Result<i32, FromSqlError>

impl FromSql for i64

fn column_result(value: ValueRef<'_>) -> Result<i64, FromSqlError>

impl FromSql for isize

fn column_result(value: ValueRef<'_>) -> Result<isize, FromSqlError>

impl FromSql for u8

fn column_result(value: ValueRef<'_>) -> Result<u8, FromSqlError>

impl FromSql for u16

fn column_result(value: ValueRef<'_>) -> Result<u16, FromSqlError>

impl FromSql for u32

fn column_result(value: ValueRef<'_>) -> Result<u32, FromSqlError>

impl FromSql for Box<str>

fn column_result(value: ValueRef<'_>) -> Result<Box<str>, FromSqlError>

impl FromSql for Box<[u8]>

fn column_result(value: ValueRef<'_>) -> Result<Box<[u8]>, FromSqlError>

impl FromSql for Rc<str>

fn column_result(value: ValueRef<'_>) -> Result<Rc<str>, FromSqlError>

impl FromSql for Rc<[u8]>

fn column_result(value: ValueRef<'_>) -> Result<Rc<[u8]>, FromSqlError>

impl FromSql for String

fn column_result(value: ValueRef<'_>) -> Result<String, FromSqlError>

impl FromSql for Arc<str>

fn column_result(value: ValueRef<'_>) -> Result<Arc<str>, FromSqlError>

impl FromSql for Arc<[u8]>

fn column_result(value: ValueRef<'_>) -> Result<Arc<[u8]>, FromSqlError>

impl FromSql for Vec<u8>

fn column_result(value: ValueRef<'_>) -> Result<Vec<u8>, FromSqlError>

impl FromSql for NonZero<i8>

fn column_result(value: ValueRef<'_>) -> Result<NonZero<i8>, FromSqlError>

impl FromSql for NonZero<i16>

fn column_result(value: ValueRef<'_>) -> Result<NonZero<i16>, FromSqlError>

impl FromSql for NonZero<i32>

fn column_result(value: ValueRef<'_>) -> Result<NonZero<i32>, FromSqlError>

impl FromSql for NonZero<i64>

fn column_result(value: ValueRef<'_>) -> Result<NonZero<i64>, FromSqlError>

impl FromSql for NonZero<isize>

fn column_result(value: ValueRef<'_>) -> Result<NonZero<isize>, FromSqlError>

impl FromSql for NonZero<u8>

fn column_result(value: ValueRef<'_>) -> Result<NonZero<u8>, FromSqlError>

impl FromSql for NonZero<u16>

fn column_result(value: ValueRef<'_>) -> Result<NonZero<u16>, FromSqlError>

impl FromSql for NonZero<u32>

fn column_result(value: ValueRef<'_>) -> Result<NonZero<u32>, FromSqlError>

impl<T> FromSql for Cow<'_, T>

where T: ToOwned + ?Sized, <T as ToOwned>::Owned: FromSql,

fn column_result(value: ValueRef<'_>) -> Result<Cow<'_, T>, FromSqlError>

impl<T> FromSql for Option<T>

where T: FromSql,

fn column_result(value: ValueRef<'_>) -> Result<Option<T>, FromSqlError>

impl<const N: usize> FromSql for [u8; N]

fn column_result(value: ValueRef<'_>) -> Result<[u8; N], FromSqlError>

Implementors

impl FromSql for Audience

impl FromSql for LastPass

Reads coven_sync_status.last_pass.

impl FromSql for OperationKind

Reads coven_operations.kind.

impl FromSql for OperationOutcome

Reads coven_operations.outcome, once it is not NULL.

impl FromSql for Value

impl FromSql for CircleId

impl FromSql for DeviceId

impl FromSql for FileId

impl FromSql for KeyId

impl FromSql for MemberId

impl FromSql for MoveId

impl FromSql for ObjectId

impl FromSql for PendingRecord

A record as coven’s coven_uploads and coven_pending views hold it (api.md E4), without its cause: coven_pending.cause holds that.

impl FromSql for RowKey

Reads a key as coven_key gives it (api.md E4): coven’s encoding of a row’s key (format.md D3). A value that isn’t one is DamagedDatabase.

impl FromSql for StoreId

impl FromSql for UuidText