Struct AnyColumnBufferSlice 

pub struct AnyColumnBufferSlice<'a> { /* private fields */ }

Enables reading the valid contents of a column buffer, while it is bound to a block cursor as [BoxColumnBuffer>].

Implementations

impl<'a> AnyColumnBufferSlice<'a>

pub fn of<T>(self) -> Option<T::Slice<'a>>

where T: Slice + 'static,

Fetch the associated slice if we know the underlying buffer to be of type T. Usually it is more convenient to use methods which some amount of knowledge about the buffer types used by this crate. I.e. it is better to use Self::as_text, Self::as_wide_text, Self::as_binary, Self::as_slice or Self::as_nullable_slice instead. The exception would be if you use a custom column buffer type provided by your application rather than odbc-api itself.

pub fn as_text(self) -> Option<TextColumnSlice<'a, u8>>

Use this if you know the underlying buffer holds narrow (e.g. UTF-8) character data and you want to read it.

Some if the the underlying buffer is of type TextColumn with u8 values. Same as Self::of::<TextColumn<u8>>.

pub fn as_wide_text(self) -> Option<TextColumnSlice<'a, u16>>

Use this if you know the underlying buffer holds wide (i.e. UTF-16) character data and you want to read it.

Some if the the underlying buffer is of type TextColumn with u16 values. Same as Self::of::<TextColumn<u16>>.

pub fn as_binary(self) -> Option<BinColumnSlice<'a>>

Use this if you know the underlying buffer holds binary data and you want to read it.

Some if the the underlying buffer is of type BinColumn. Same as Self::of::<BinColumn>.

pub fn as_slice<T>(self) -> Option<&'a [T]>

where T: Pod,

Use this if you know the underlying buffer to hold non-nullable data of type T.

pub fn as_nullable_slice<T>(self) -> Option<NullableSlice<'a, T>>

where T: Pod,

Use this if you know the underlying buffer to hold nullable data of type T.

Trait Implementations

impl<'a> Clone for AnyColumnBufferSlice<'a>

fn clone(&self) -> AnyColumnBufferSlice<'a>

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<'a> Copy for AnyColumnBufferSlice<'a>