Struct PhantomHummockIterator

pub struct PhantomHummockIterator<D: HummockIteratorDirection> {
    _phantom: PhantomData<D>,
}

This is a placeholder trait used in HummockIteratorUnion

Fields

_phantom: PhantomData<D>

Trait Implementations

impl<D: HummockIteratorDirection> HummockIterator for PhantomHummockIterator<D>

type Direction = D

async fn next(&mut self) -> HummockResult<()>

Moves a valid iterator to the next key.

fn key(&self) -> FullKey<&[u8]>

Retrieves the current key.

fn value(&self) -> HummockValue<&[u8]>

Retrieves the current value, decoded as HummockValue.

fn is_valid(&self) -> bool

Indicates whether the iterator can be used.

async fn rewind(&mut self) -> HummockResult<()>

Resets the position of the iterator.

async fn seek<'a>(&'a mut self, _key: FullKey<&'a [u8]>) -> HummockResult<()>

Resets iterator and seeks to the first position where the key >= provided key, or key <= provided key if this is a backward iterator.

fn collect_local_statistic(&self, _stats: &mut StoreLocalStatistic)

take local statistic info from iterator to report metrics.

fn value_meta(&self) -> ValueMeta

Returns value meta.