Trait mz_persist::indexed::snapshot::Snapshot

pub trait Snapshot<K, V>: Sized {
    type Iter: Iterator<Item = Result<((K, V), u64, i64), Error>>;
    fn into_iters(self, num_iters: NonZeroUsize) -> Vec<Self::Iter>;

    fn into_iter(self) -> Self::Iter { ... }
}

An isolated, consistent read of previously written (Key, Value, Time, Diff) updates.

Associated Types

type Iter: Iterator<Item = Result<((K, V), u64, i64), Error>>

The kind of iterator we are turning this into.

Required methods

fn into_iters(self, num_iters: NonZeroUsize) -> Vec<Self::Iter>

Returns a set of num_iters Iterators that each output roughly 1/num_iters of the data represented by this snapshot.

Provided methods

fn into_iter(self) -> Self::Iter

Returns a single Iterator that outputs the data represented by this snapshot.

Implementors

impl<K: SnapshotToOwned, V: SnapshotToOwned> Snapshot<K, V> for ArrangementSnapshot

type Iter = ArrangementSnapshotIter<K, V>

impl<K: SnapshotToOwned, V: SnapshotToOwned> Snapshot<K, V> for TraceSnapshot

type Iter = TraceSnapshotIter<K, V>

impl<K: SnapshotToOwned, V: SnapshotToOwned> Snapshot<K, V> for UnsealedSnapshot

type Iter = UnsealedSnapshotIter<K, V>