Trait InputDatumType 

pub trait InputDatumType<'a, E>: Sized {
    // Required methods
    fn nullable() -> bool;
    fn try_from_result(
        res: Result<Datum<'a>, E>,
    ) -> Result<Self, Result<Datum<'a>, E>>;

    // Provided method
    fn try_from_iter(
        iter: &mut impl Iterator<Item = Result<Datum<'a>, E>>,
    ) -> Result<Self, Result<Option<Datum<'a>>, E>> { ... }
}

A bridge between native Rust types and SQL runtime types represented in Datums

Required Methods

fn nullable() -> bool

Whether this Rust type can represent NULL values

fn try_from_result( res: Result<Datum<'a>, E>, ) -> Result<Self, Result<Datum<'a>, E>>

Try to convert a Result whose Ok variant is a Datum into this native Rust type (Self). If it fails the error variant will contain the original result.

Provided Methods

fn try_from_iter( iter: &mut impl Iterator<Item = Result<Datum<'a>, E>>, ) -> Result<Self, Result<Option<Datum<'a>>, E>>

Try to convert a number of datums to a Result whose Ok variant is a native Rust type (Self) representing a number of datums obtained from the iterator.

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<'a, E> InputDatumType<'a, E> for &'a str

fn nullable() -> bool

fn try_from_result( res: Result<Datum<'a>, E>, ) -> Result<Self, Result<Datum<'a>, E>>

impl<'a, E> InputDatumType<'a, E> for &'a [u8]

fn nullable() -> bool

fn try_from_result( res: Result<Datum<'a>, E>, ) -> Result<Self, Result<Datum<'a>, E>>

impl<'a, E> InputDatumType<'a, E> for bool

fn nullable() -> bool

fn try_from_result( res: Result<Datum<'a>, E>, ) -> Result<Self, Result<Datum<'a>, E>>

impl<'a, E> InputDatumType<'a, E> for f32

fn nullable() -> bool

fn try_from_result( res: Result<Datum<'a>, E>, ) -> Result<Self, Result<Datum<'a>, E>>

impl<'a, E> InputDatumType<'a, E> for f64

fn nullable() -> bool

fn try_from_result( res: Result<Datum<'a>, E>, ) -> Result<Self, Result<Datum<'a>, E>>

impl<'a, E> InputDatumType<'a, E> for i16

fn nullable() -> bool

fn try_from_result( res: Result<Datum<'a>, E>, ) -> Result<Self, Result<Datum<'a>, E>>

impl<'a, E> InputDatumType<'a, E> for i32

fn nullable() -> bool

fn try_from_result( res: Result<Datum<'a>, E>, ) -> Result<Self, Result<Datum<'a>, E>>

impl<'a, E> InputDatumType<'a, E> for i64

fn nullable() -> bool

fn try_from_result( res: Result<Datum<'a>, E>, ) -> Result<Self, Result<Datum<'a>, E>>

impl<'a, E> InputDatumType<'a, E> for u16

fn nullable() -> bool

fn try_from_result( res: Result<Datum<'a>, E>, ) -> Result<Self, Result<Datum<'a>, E>>

impl<'a, E> InputDatumType<'a, E> for u32

fn nullable() -> bool

fn try_from_result( res: Result<Datum<'a>, E>, ) -> Result<Self, Result<Datum<'a>, E>>

impl<'a, E> InputDatumType<'a, E> for u64

fn nullable() -> bool

fn try_from_result( res: Result<Datum<'a>, E>, ) -> Result<Self, Result<Datum<'a>, E>>

impl<'a, E> InputDatumType<'a, E> for NaiveTime

fn nullable() -> bool

fn try_from_result( res: Result<Datum<'a>, E>, ) -> Result<Self, Result<Datum<'a>, E>>

impl<'a, E> InputDatumType<'a, E> for OrderedDecimal<Numeric>

fn nullable() -> bool

fn try_from_result( res: Result<Datum<'a>, E>, ) -> Result<Self, Result<Datum<'a>, E>>

impl<'a, E> InputDatumType<'a, E> for Uuid

fn nullable() -> bool

fn try_from_result( res: Result<Datum<'a>, E>, ) -> Result<Self, Result<Datum<'a>, E>>

impl<'a, E> InputDatumType<'a, E> for String

fn nullable() -> bool

fn try_from_result( res: Result<Datum<'a>, E>, ) -> Result<Self, Result<Datum<'a>, E>>

impl<'a, E> InputDatumType<'a, E> for Vec<u8>

fn nullable() -> bool

fn try_from_result( res: Result<Datum<'a>, E>, ) -> Result<Self, Result<Datum<'a>, E>>

impl<'a, E, B: InputDatumType<'a, E>> InputDatumType<'a, E> for Option<B>

fn nullable() -> bool

fn try_from_result( res: Result<Datum<'a>, E>, ) -> Result<Self, Result<Datum<'a>, E>>

impl<'a, E, B: InputDatumType<'a, E>> InputDatumType<'a, E> for Result<B, E>

fn nullable() -> bool

fn try_from_result( res: Result<Datum<'a>, E>, ) -> Result<Self, Result<Datum<'a>, E>>

fn try_from_iter( iter: &mut impl Iterator<Item = Result<Datum<'a>, E>>, ) -> Result<Self, Result<Option<Datum<'a>>, E>>

impl<'a, E, B: ToOwned + ?Sized> InputDatumType<'a, E> for Cow<'a, B>

where for<'b> B::Owned: InputDatumType<'b, E>, for<'b> &'b B: InputDatumType<'b, E>,

fn nullable() -> bool

fn try_from_result( res: Result<Datum<'a>, E>, ) -> Result<Self, Result<Datum<'a>, E>>

impl<'a, E, T0: InputDatumType<'a, E>> InputDatumType<'a, E> for (T0,)

fn try_from_result( _res: Result<Datum<'a>, E>, ) -> Result<Self, Result<Datum<'a>, E>>

fn try_from_iter( iter: &mut impl Iterator<Item = Result<Datum<'a>, E>>, ) -> Result<Self, Result<Option<Datum<'a>>, E>>

fn nullable() -> bool

impl<'a, E, T0: InputDatumType<'a, E>, T1: InputDatumType<'a, E>> InputDatumType<'a, E> for (T0, T1)

fn try_from_result( _res: Result<Datum<'a>, E>, ) -> Result<Self, Result<Datum<'a>, E>>

fn try_from_iter( iter: &mut impl Iterator<Item = Result<Datum<'a>, E>>, ) -> Result<Self, Result<Option<Datum<'a>>, E>>

fn nullable() -> bool

impl<'a, E, T0: InputDatumType<'a, E>, T1: InputDatumType<'a, E>, T2: InputDatumType<'a, E>> InputDatumType<'a, E> for (T0, T1, T2)

fn try_from_result( _res: Result<Datum<'a>, E>, ) -> Result<Self, Result<Datum<'a>, E>>

fn try_from_iter( iter: &mut impl Iterator<Item = Result<Datum<'a>, E>>, ) -> Result<Self, Result<Option<Datum<'a>>, E>>

fn nullable() -> bool

impl<'a, E, T0: InputDatumType<'a, E>, T1: InputDatumType<'a, E>, T2: InputDatumType<'a, E>, T3: InputDatumType<'a, E>> InputDatumType<'a, E> for (T0, T1, T2, T3)

fn try_from_result( _res: Result<Datum<'a>, E>, ) -> Result<Self, Result<Datum<'a>, E>>

fn try_from_iter( iter: &mut impl Iterator<Item = Result<Datum<'a>, E>>, ) -> Result<Self, Result<Option<Datum<'a>>, E>>

fn nullable() -> bool

impl<'a, E, T0: InputDatumType<'a, E>, T1: InputDatumType<'a, E>, T2: InputDatumType<'a, E>, T3: InputDatumType<'a, E>, T4: InputDatumType<'a, E>> InputDatumType<'a, E> for (T0, T1, T2, T3, T4)

fn try_from_result( _res: Result<Datum<'a>, E>, ) -> Result<Self, Result<Datum<'a>, E>>

fn try_from_iter( iter: &mut impl Iterator<Item = Result<Datum<'a>, E>>, ) -> Result<Self, Result<Option<Datum<'a>>, E>>

fn nullable() -> bool

Implementors

impl<'a, E> InputDatumType<'a, E> for Datum<'a>

impl<'a, E> InputDatumType<'a, E> for Array<'a>

impl<'a, E> InputDatumType<'a, E> for Char<&'a str>

impl<'a, E> InputDatumType<'a, E> for Char<String>

impl<'a, E> InputDatumType<'a, E> for Date

impl<'a, E> InputDatumType<'a, E> for Interval

impl<'a, E> InputDatumType<'a, E> for Jsonb

impl<'a, E> InputDatumType<'a, E> for JsonbRef<'a>

impl<'a, E> InputDatumType<'a, E> for AclItem

impl<'a, E> InputDatumType<'a, E> for MzAclItem

impl<'a, E> InputDatumType<'a, E> for PgLegacyName<&'a str>

impl<'a, E> InputDatumType<'a, E> for PgLegacyName<String>

impl<'a, E> InputDatumType<'a, E> for Range<Datum<'a>>

impl<'a, E> InputDatumType<'a, E> for Range<DatumNested<'a>>

impl<'a, E> InputDatumType<'a, E> for Oid

impl<'a, E> InputDatumType<'a, E> for PgLegacyChar

impl<'a, E> InputDatumType<'a, E> for RegClass

impl<'a, E> InputDatumType<'a, E> for RegProc

impl<'a, E> InputDatumType<'a, E> for RegType

impl<'a, E> InputDatumType<'a, E> for CheckedTimestamp<DateTime<Utc>>

impl<'a, E> InputDatumType<'a, E> for CheckedTimestamp<NaiveDateTime>

impl<'a, E> InputDatumType<'a, E> for VarChar<&'a str>

impl<'a, E> InputDatumType<'a, E> for VarChar<String>

impl<'a, E> InputDatumType<'a, E> for ArrayRustType<Cow<'a, str>>

impl<'a, E> InputDatumType<'a, E> for ArrayRustType<String>

impl<'a, E> InputDatumType<'a, E> for DatumList<'a>

impl<'a, E> InputDatumType<'a, E> for DatumMap<'a>

impl<'a, E> InputDatumType<'a, E> for Int2Vector<'a>

impl<'a, E> InputDatumType<'a, E> for Timestamp

impl<'a, E> InputDatumType<'a, E> for Numeric

impl<'a, E, B: InputDatumType<'a, E>> InputDatumType<'a, E> for ExcludeNull<B>