Trait odbc_api::buffers::Item

pub trait Item: Sized + Copy {
    const BUFFER_KIND: BufferKind;

    fn as_slice(variant: AnySlice<'_>) -> Option<&[Self]>;
    fn as_nullable_slice(
        variant: AnySlice<'_>
    ) -> Option<NullableSlice<'_, Self>>;
    fn as_slice_mut(variant: AnySliceMut<'_>) -> Option<&mut [Self]>;
    fn as_nullable_slice_mut(
        variant: AnySliceMut<'_>
    ) -> Option<NullableSliceMut<'_, Self>>;
}

Can either be extracted as a slice or a NullableSlice from an [AnyColumnView]. This allows the user to avoid matching on all possibile variants of an [AnyColumnView] in case the buffered type is known at compile time.

Required Associated Constants

const BUFFER_KIND: BufferKind

E.g. BufferKind::I64 for i64. The kind can be used in a buffer description to instantiate a super::ColumnarBuffer.

Required Methods

fn as_slice(variant: AnySlice<'_>) -> Option<&[Self]>

Extract the array type from an [AnyColumnView].

fn as_nullable_slice(variant: AnySlice<'_>) -> Option<NullableSlice<'_, Self>>

Extract the typed nullable buffer from an [AnyColumnView].

fn as_slice_mut(variant: AnySliceMut<'_>) -> Option<&mut [Self]>

Extract the array type from an [AnyColumnSliceMut].

fn as_nullable_slice_mut(
    variant: AnySliceMut<'_>
) -> Option<NullableSliceMut<'_, Self>>

Extract the typed nullable buffer from an [AnyColumnSliceMut].

Implementations on Foreign Types

impl Item for f64

const BUFFER_KIND: BufferKind = BufferKind::F64

fn as_slice(variant: AnySlice<'_>) -> Option<&[Self]>

fn as_nullable_slice(variant: AnySlice<'_>) -> Option<NullableSlice<'_, Self>>

fn as_slice_mut<'a>(variant: AnySliceMut<'a>) -> Option<&'a mut [Self]>

fn as_nullable_slice_mut<'a>(
    variant: AnySliceMut<'a>
) -> Option<NullableSliceMut<'a, Self>>

impl Item for f32

const BUFFER_KIND: BufferKind = BufferKind::F32

fn as_slice(variant: AnySlice<'_>) -> Option<&[Self]>

fn as_nullable_slice(variant: AnySlice<'_>) -> Option<NullableSlice<'_, Self>>

fn as_slice_mut<'a>(variant: AnySliceMut<'a>) -> Option<&'a mut [Self]>

fn as_nullable_slice_mut<'a>(
    variant: AnySliceMut<'a>
) -> Option<NullableSliceMut<'a, Self>>

impl Item for u8

const BUFFER_KIND: BufferKind = BufferKind::U8

fn as_slice(variant: AnySlice<'_>) -> Option<&[Self]>

fn as_nullable_slice(variant: AnySlice<'_>) -> Option<NullableSlice<'_, Self>>

fn as_slice_mut<'a>(variant: AnySliceMut<'a>) -> Option<&'a mut [Self]>

fn as_nullable_slice_mut<'a>(
    variant: AnySliceMut<'a>
) -> Option<NullableSliceMut<'a, Self>>

impl Item for i8

const BUFFER_KIND: BufferKind = BufferKind::I8

fn as_slice(variant: AnySlice<'_>) -> Option<&[Self]>

fn as_nullable_slice(variant: AnySlice<'_>) -> Option<NullableSlice<'_, Self>>

fn as_slice_mut<'a>(variant: AnySliceMut<'a>) -> Option<&'a mut [Self]>

fn as_nullable_slice_mut<'a>(
    variant: AnySliceMut<'a>
) -> Option<NullableSliceMut<'a, Self>>

impl Item for i16

const BUFFER_KIND: BufferKind = BufferKind::I16

fn as_slice(variant: AnySlice<'_>) -> Option<&[Self]>

fn as_nullable_slice(variant: AnySlice<'_>) -> Option<NullableSlice<'_, Self>>

fn as_slice_mut<'a>(variant: AnySliceMut<'a>) -> Option<&'a mut [Self]>

fn as_nullable_slice_mut<'a>(
    variant: AnySliceMut<'a>
) -> Option<NullableSliceMut<'a, Self>>

impl Item for i32

const BUFFER_KIND: BufferKind = BufferKind::I32

fn as_slice(variant: AnySlice<'_>) -> Option<&[Self]>

fn as_nullable_slice(variant: AnySlice<'_>) -> Option<NullableSlice<'_, Self>>

fn as_slice_mut<'a>(variant: AnySliceMut<'a>) -> Option<&'a mut [Self]>

fn as_nullable_slice_mut<'a>(
    variant: AnySliceMut<'a>
) -> Option<NullableSliceMut<'a, Self>>

impl Item for i64

const BUFFER_KIND: BufferKind = BufferKind::I64

fn as_slice(variant: AnySlice<'_>) -> Option<&[Self]>

fn as_nullable_slice(variant: AnySlice<'_>) -> Option<NullableSlice<'_, Self>>

fn as_slice_mut<'a>(variant: AnySliceMut<'a>) -> Option<&'a mut [Self]>

fn as_nullable_slice_mut<'a>(
    variant: AnySliceMut<'a>
) -> Option<NullableSliceMut<'a, Self>>

impl Item for Date

const BUFFER_KIND: BufferKind = BufferKind::Date

fn as_slice(variant: AnySlice<'_>) -> Option<&[Self]>

fn as_nullable_slice(variant: AnySlice<'_>) -> Option<NullableSlice<'_, Self>>

fn as_slice_mut<'a>(variant: AnySliceMut<'a>) -> Option<&'a mut [Self]>

fn as_nullable_slice_mut<'a>(
    variant: AnySliceMut<'a>
) -> Option<NullableSliceMut<'a, Self>>

impl Item for Time

const BUFFER_KIND: BufferKind = BufferKind::Time

fn as_slice(variant: AnySlice<'_>) -> Option<&[Self]>

fn as_nullable_slice(variant: AnySlice<'_>) -> Option<NullableSlice<'_, Self>>

fn as_slice_mut<'a>(variant: AnySliceMut<'a>) -> Option<&'a mut [Self]>

fn as_nullable_slice_mut<'a>(
    variant: AnySliceMut<'a>
) -> Option<NullableSliceMut<'a, Self>>

impl Item for Timestamp

const BUFFER_KIND: BufferKind = BufferKind::Timestamp

fn as_slice(variant: AnySlice<'_>) -> Option<&[Self]>

fn as_nullable_slice(variant: AnySlice<'_>) -> Option<NullableSlice<'_, Self>>

fn as_slice_mut<'a>(variant: AnySliceMut<'a>) -> Option<&'a mut [Self]>

fn as_nullable_slice_mut<'a>(
    variant: AnySliceMut<'a>
) -> Option<NullableSliceMut<'a, Self>>

Implementors

impl Item for Bit

const BUFFER_KIND: BufferKind = BufferKind::Bit