Trait diesel::types::FromSql

pub trait FromSql<A, DB: Backend + HasSqlType<A>>: Sized {
    fn from_sql(
        bytes: Option<&DB::RawValue>
    ) -> Result<Self, Box<Error + Send + Sync>>;
}

How to deserialize a single field of a given type. The input will always be the binary representation, not the text.

Required Methods

fn from_sql(
    bytes: Option<&DB::RawValue>
) -> Result<Self, Box<Error + Send + Sync>>

Implementations on Foreign Types

impl<DB: Backend<RawValue = [u8]>> FromSql<Float, DB> for f32

fn from_sql(bytes: Option<&[u8]>) -> Result<Self, Box<Error + Send + Sync>>

impl<DB: Backend<RawValue = [u8]>> FromSql<Double, DB> for f64

fn from_sql(bytes: Option<&[u8]>) -> Result<Self, Box<Error + Send + Sync>>

impl<DB: Backend<RawValue = [u8]>> FromSql<SmallInt, DB> for i16

fn from_sql(bytes: Option<&[u8]>) -> Result<Self, Box<Error + Send + Sync>>

impl<DB: Backend<RawValue = [u8]>> FromSql<Integer, DB> for i32

fn from_sql(bytes: Option<&[u8]>) -> Result<Self, Box<Error + Send + Sync>>

impl<DB: Backend<RawValue = [u8]>> FromSql<BigInt, DB> for i64

fn from_sql(bytes: Option<&[u8]>) -> Result<Self, Box<Error + Send + Sync>>

impl<T, ST, DB> FromSql<Nullable<ST>, DB> for Option<T> where
    T: FromSql<ST, DB>,
    DB: Backend + HasSqlType<ST>,
    ST: NotNull, 

fn from_sql(
    bytes: Option<&DB::RawValue>
) -> Result<Self, Box<Error + Send + Sync>>

impl<DB: Backend<RawValue = [u8]>> FromSql<Text, DB> for String

fn from_sql(bytes: Option<&[u8]>) -> Result<Self, Box<Error + Send + Sync>>

impl<DB: Backend<RawValue = [u8]>> FromSql<Binary, DB> for Vec<u8>

fn from_sql(
    bytes: Option<&DB::RawValue>
) -> Result<Self, Box<Error + Send + Sync>>

impl<'a, T: ?Sized, ST, DB> FromSql<ST, DB> for Cow<'a, T> where
    T: 'a + ToOwned,
    DB: Backend + HasSqlType<ST>,
    T::Owned: FromSql<ST, DB>, 

fn from_sql(
    bytes: Option<&DB::RawValue>
) -> Result<Self, Box<Error + Send + Sync>>

impl<T, ST> FromSql<Array<ST>, Pg> for Vec<T> where
    T: FromSql<ST, Pg>,
    Pg: HasSqlType<ST>, 

fn from_sql(bytes: Option<&[u8]>) -> Result<Self, Box<Error + Send + Sync>>

impl FromSql<Timestamp, Pg> for SystemTime

fn from_sql(bytes: Option<&[u8]>) -> Result<Self, Box<Error + Send + Sync>>

impl FromSql<Timestamp, Pg> for NaiveDateTime

fn from_sql(bytes: Option<&[u8]>) -> Result<Self, Box<Error + Send + Sync>>

impl FromSql<Timestamptz, Pg> for NaiveDateTime

fn from_sql(bytes: Option<&[u8]>) -> Result<Self, Box<Error + Send + Sync>>

impl FromSql<Timestamptz, Pg> for DateTime<UTC>

fn from_sql(bytes: Option<&[u8]>) -> Result<Self, Box<Error + Send + Sync>>

impl FromSql<Time, Pg> for NaiveTime

fn from_sql(bytes: Option<&[u8]>) -> Result<Self, Box<Error + Send + Sync>>

impl FromSql<Date, Pg> for NaiveDate

fn from_sql(bytes: Option<&[u8]>) -> Result<Self, Box<Error + Send + Sync>>

impl FromSql<Oid, Pg> for u32

fn from_sql(bytes: Option<&[u8]>) -> Result<Self, Box<Error + Send + Sync>>

impl FromSql<Bool, Pg> for bool

fn from_sql(bytes: Option<&[u8]>) -> Result<Self, Box<Error + Send + Sync>>

impl FromSql<Uuid, Pg> for Uuid

fn from_sql(bytes: Option<&[u8]>) -> Result<Self, Box<Error + Send + Sync>>

impl FromSql<Date, Sqlite> for String

fn from_sql(
    value: Option<&SqliteValue>
) -> Result<Self, Box<Error + Send + Sync>>

impl FromSql<Time, Sqlite> for String

fn from_sql(
    value: Option<&SqliteValue>
) -> Result<Self, Box<Error + Send + Sync>>

impl FromSql<Timestamp, Sqlite> for String

fn from_sql(
    value: Option<&SqliteValue>
) -> Result<Self, Box<Error + Send + Sync>>

impl FromSql<VarChar, Sqlite> for String

fn from_sql(
    value: Option<&SqliteValue>
) -> Result<Self, Box<Error + Send + Sync>>

impl FromSql<Binary, Sqlite> for Vec<u8>

fn from_sql(
    bytes: Option<&SqliteValue>
) -> Result<Self, Box<Error + Send + Sync>>

impl FromSql<SmallInt, Sqlite> for i16

fn from_sql(
    value: Option<&SqliteValue>
) -> Result<Self, Box<Error + Send + Sync>>

impl FromSql<Integer, Sqlite> for i32

fn from_sql(
    value: Option<&SqliteValue>
) -> Result<Self, Box<Error + Send + Sync>>

impl FromSql<Bool, Sqlite> for bool

fn from_sql(
    value: Option<&SqliteValue>
) -> Result<Self, Box<Error + Send + Sync>>

impl FromSql<BigInt, Sqlite> for i64

fn from_sql(
    value: Option<&SqliteValue>
) -> Result<Self, Box<Error + Send + Sync>>

impl FromSql<Float, Sqlite> for f32

fn from_sql(
    value: Option<&SqliteValue>
) -> Result<Self, Box<Error + Send + Sync>>

impl FromSql<Double, Sqlite> for f64

fn from_sql(
    value: Option<&SqliteValue>
) -> Result<Self, Box<Error + Send + Sync>>

Implementors

• impl FromSql<Timestamp, Pg> for PgTimestamp
• impl FromSql<Timestamptz, Pg> for PgTimestamp
• impl FromSql<Date, Pg> for PgDate
• impl FromSql<Time, Pg> for PgTime
• impl FromSql<Interval, Pg> for PgInterval
• impl FromSql<Numeric, Pg> for PgNumeric