Trait TryFromColumn 

pub trait TryFromColumn<C: Configuration>: Sized {
    type Error: Error + 'static;

    // Required method
    fn try_from_column<'i, 's, 'c, S>(
        column: Column<'i, 's, 'c, S, C>,
    ) -> Result<Self, Self::Error>;
}

Column values can be converted to types implementing this trait.

This trait is implemented for primitive Rust types, String and chrono date and time types.

Required Associated Types

type Error: Error + 'static

Required Methods

fn try_from_column<'i, 's, 'c, S>( column: Column<'i, 's, 'c, S, C>, ) -> Result<Self, Self::Error>

Create Self from row column.

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<C: Configuration> TryFromColumn<C> for Option<Value>

type Error = ColumnConvertError

fn try_from_column<'i, 's, 'c, S>( column: Column<'i, 's, 'c, S, C>, ) -> Result<Self, Self::Error>

impl<C: Configuration> TryFromColumn<C> for Option<bool>

type Error = ColumnConvertError

fn try_from_column<'i, 's, 'c, S>( column: Column<'i, 's, 'c, S, C>, ) -> Result<Self, Self::Error>

impl<C: Configuration> TryFromColumn<C> for Option<f32>

type Error = ColumnConvertError

fn try_from_column<'i, 's, 'c, S>( column: Column<'i, 's, 'c, S, C>, ) -> Result<Self, Self::Error>

impl<C: Configuration> TryFromColumn<C> for Option<f64>

type Error = ColumnConvertError

fn try_from_column<'i, 's, 'c, S>( column: Column<'i, 's, 'c, S, C>, ) -> Result<Self, Self::Error>

impl<C: Configuration> TryFromColumn<C> for Option<i8>

type Error = ColumnConvertError

fn try_from_column<'i, 's, 'c, S>( column: Column<'i, 's, 'c, S, C>, ) -> Result<Self, Self::Error>

impl<C: Configuration> TryFromColumn<C> for Option<i16>

type Error = ColumnConvertError

fn try_from_column<'i, 's, 'c, S>( column: Column<'i, 's, 'c, S, C>, ) -> Result<Self, Self::Error>

impl<C: Configuration> TryFromColumn<C> for Option<i32>

type Error = ColumnConvertError

fn try_from_column<'i, 's, 'c, S>( column: Column<'i, 's, 'c, S, C>, ) -> Result<Self, Self::Error>

impl<C: Configuration> TryFromColumn<C> for Option<i64>

type Error = ColumnConvertError

fn try_from_column<'i, 's, 'c, S>( column: Column<'i, 's, 'c, S, C>, ) -> Result<Self, Self::Error>

impl<C: Configuration> TryFromColumn<C> for Option<u8>

type Error = ColumnConvertError

fn try_from_column<'i, 's, 'c, S>( column: Column<'i, 's, 'c, S, C>, ) -> Result<Self, Self::Error>

impl<C: Configuration> TryFromColumn<C> for Option<u16>

type Error = ColumnConvertError

fn try_from_column<'i, 's, 'c, S>( column: Column<'i, 's, 'c, S, C>, ) -> Result<Self, Self::Error>

impl<C: Configuration> TryFromColumn<C> for Option<u32>

type Error = ColumnConvertError

fn try_from_column<'i, 's, 'c, S>( column: Column<'i, 's, 'c, S, C>, ) -> Result<Self, Self::Error>

impl<C: Configuration> TryFromColumn<C> for Option<u64>

type Error = ColumnConvertError

fn try_from_column<'i, 's, 'c, S>( column: Column<'i, 's, 'c, S, C>, ) -> Result<Self, Self::Error>

impl<C: Configuration> TryFromColumn<C> for Option<String>

type Error = ColumnConvertError

fn try_from_column<'i, 's, 'c, S>( column: Column<'i, 's, 'c, S, C>, ) -> Result<Self, Self::Error>

impl<C: Configuration> TryFromColumn<C> for Option<NaiveDate>

Available on crate feature chrono only.

type Error = ColumnConvertError

fn try_from_column<'i, 's, 'c, S>( column: Column<'i, 's, 'c, S, C>, ) -> Result<Self, Self::Error>

impl<C: Configuration> TryFromColumn<C> for Option<NaiveDateTime>

Available on crate feature chrono only.

type Error = ColumnConvertError

fn try_from_column<'i, 's, 'c, S>( column: Column<'i, 's, 'c, S, C>, ) -> Result<Self, Self::Error>

impl<C: Configuration> TryFromColumn<C> for Option<NaiveTime>

Available on crate feature chrono only.

type Error = ColumnConvertError

fn try_from_column<'i, 's, 'c, S>( column: Column<'i, 's, 'c, S, C>, ) -> Result<Self, Self::Error>

impl<C: Configuration> TryFromColumn<C> for Option<SqlDate>

type Error = ColumnConvertError

fn try_from_column<'i, 's, 'c, S>( column: Column<'i, 's, 'c, S, C>, ) -> Result<Self, Self::Error>

impl<C: Configuration> TryFromColumn<C> for Option<SqlSsTime2>

type Error = ColumnConvertError

fn try_from_column<'i, 's, 'c, S>( column: Column<'i, 's, 'c, S, C>, ) -> Result<Self, Self::Error>

impl<C: Configuration> TryFromColumn<C> for Option<SqlTimestamp>

type Error = ColumnConvertError

fn try_from_column<'i, 's, 'c, S>( column: Column<'i, 's, 'c, S, C>, ) -> Result<Self, Self::Error>

impl<C: Configuration> TryFromColumn<C> for bool

type Error = ColumnConvertError

fn try_from_column<'i, 's, 'c, S>( column: Column<'i, 's, 'c, S, C>, ) -> Result<Self, Self::Error>

impl<C: Configuration> TryFromColumn<C> for f32

type Error = ColumnConvertError

fn try_from_column<'i, 's, 'c, S>( column: Column<'i, 's, 'c, S, C>, ) -> Result<Self, Self::Error>

impl<C: Configuration> TryFromColumn<C> for f64

type Error = ColumnConvertError

fn try_from_column<'i, 's, 'c, S>( column: Column<'i, 's, 'c, S, C>, ) -> Result<Self, Self::Error>

impl<C: Configuration> TryFromColumn<C> for i8

type Error = ColumnConvertError

fn try_from_column<'i, 's, 'c, S>( column: Column<'i, 's, 'c, S, C>, ) -> Result<Self, Self::Error>

impl<C: Configuration> TryFromColumn<C> for i16

type Error = ColumnConvertError

fn try_from_column<'i, 's, 'c, S>( column: Column<'i, 's, 'c, S, C>, ) -> Result<Self, Self::Error>

impl<C: Configuration> TryFromColumn<C> for i32

type Error = ColumnConvertError

fn try_from_column<'i, 's, 'c, S>( column: Column<'i, 's, 'c, S, C>, ) -> Result<Self, Self::Error>

impl<C: Configuration> TryFromColumn<C> for i64

type Error = ColumnConvertError

fn try_from_column<'i, 's, 'c, S>( column: Column<'i, 's, 'c, S, C>, ) -> Result<Self, Self::Error>

impl<C: Configuration> TryFromColumn<C> for u8

type Error = ColumnConvertError

fn try_from_column<'i, 's, 'c, S>( column: Column<'i, 's, 'c, S, C>, ) -> Result<Self, Self::Error>

impl<C: Configuration> TryFromColumn<C> for u16

type Error = ColumnConvertError

fn try_from_column<'i, 's, 'c, S>( column: Column<'i, 's, 'c, S, C>, ) -> Result<Self, Self::Error>

impl<C: Configuration> TryFromColumn<C> for u32

type Error = ColumnConvertError

fn try_from_column<'i, 's, 'c, S>( column: Column<'i, 's, 'c, S, C>, ) -> Result<Self, Self::Error>

impl<C: Configuration> TryFromColumn<C> for u64

type Error = ColumnConvertError

fn try_from_column<'i, 's, 'c, S>( column: Column<'i, 's, 'c, S, C>, ) -> Result<Self, Self::Error>

impl<C: Configuration> TryFromColumn<C> for String

type Error = ColumnConvertError

fn try_from_column<'i, 's, 'c, S>( column: Column<'i, 's, 'c, S, C>, ) -> Result<Self, Self::Error>

Implementors

impl<C: Configuration> TryFromColumn<C> for Value

type Error = ColumnConvertError

impl<C: Configuration> TryFromColumn<C> for NaiveDate

type Error = ColumnConvertError

impl<C: Configuration> TryFromColumn<C> for NaiveDateTime

type Error = ColumnConvertError

impl<C: Configuration> TryFromColumn<C> for NaiveTime

type Error = ColumnConvertError

impl<C: Configuration> TryFromColumn<C> for SqlDate

type Error = ColumnConvertError

impl<C: Configuration> TryFromColumn<C> for SqlSsTime2

type Error = ColumnConvertError

impl<C: Configuration> TryFromColumn<C> for SqlTimestamp

type Error = ColumnConvertError