struct PartRef<'a, T: Timestamp, D> {
next_kvt: Reverse<Option<((ArrayIdx<'a>, Option<ArrayIdx<'a>>), T, D)>>,
part_index: usize,
row_index: &'a mut PartIndices,
last_in_run: bool,
_phantom: PhantomData<D>,
}
Expand description
This is used as a max-heap entry: the ordering of the fields is important!
Fields§
§next_kvt: Reverse<Option<((ArrayIdx<'a>, Option<ArrayIdx<'a>>), T, D)>>
The smallest KVT that might be emitted from this run in the future. This is reverse-sorted: Nones will sort largest (and be popped first on the heap) and smaller keys will be popped before larger keys.
part_index: usize
The index of the corresponding part within the ConsolidatingIter’s list of parts.
row_index: &'a mut PartIndices
The index of the next row within that part. This is a mutable pointer to long-lived state; we must only advance this index once we’ve rolled any rows before this index into our state.
last_in_run: bool
Whether / not the iterator for the part is the last in its run, or whether there may be iterators for the same part in the future.
_phantom: PhantomData<D>
Implementations§
Source§impl<'a, T: Timestamp + Codec64 + Lattice, D: Codec64 + Semigroup> PartRef<'a, T, D>
impl<'a, T: Timestamp + Codec64 + Lattice, D: Codec64 + Semigroup> PartRef<'a, T, D>
fn update_peek( &mut self, part: &'a StructuredUpdates, filter: &FetchBatchFilter<T>, )
fn pop( &mut self, from: &[&'a StructuredUpdates], filter: &FetchBatchFilter<T>, ) -> Option<((usize, usize), (ArrayIdx<'a>, Option<ArrayIdx<'a>>), T, D)>
Trait Implementations§
Source§impl<'a, T: Ord + Timestamp, D: Ord> Ord for PartRef<'a, T, D>
impl<'a, T: Ord + Timestamp, D: Ord> Ord for PartRef<'a, T, D>
1.21.0 · Source§fn max(self, other: Self) -> Selfwhere
Self: Sized,
fn max(self, other: Self) -> Selfwhere
Self: Sized,
Source§impl<'a, T: PartialOrd + Timestamp, D: PartialOrd> PartialOrd for PartRef<'a, T, D>
impl<'a, T: PartialOrd + Timestamp, D: PartialOrd> PartialOrd for PartRef<'a, T, D>
impl<'a, T: Eq + Timestamp, D: Eq> Eq for PartRef<'a, T, D>
impl<'a, T: Timestamp, D> StructuralPartialEq for PartRef<'a, T, D>
Auto Trait Implementations§
impl<'a, T, D> Freeze for PartRef<'a, T, D>
impl<'a, T, D> RefUnwindSafe for PartRef<'a, T, D>where
D: RefUnwindSafe,
T: RefUnwindSafe,
impl<'a, T, D> Send for PartRef<'a, T, D>where
D: Send,
impl<'a, T, D> Sync for PartRef<'a, T, D>
impl<'a, T, D> Unpin for PartRef<'a, T, D>
impl<'a, T, D> !UnwindSafe for PartRef<'a, T, D>
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