Struct differential_dataflow::trace::layers::ordered::OrderedBuilder

pub struct OrderedBuilder<K: Ord, L> {
    pub keys: Vec<K>,
    pub offs: Vec<usize>,
    pub vals: L,
}

Assembles a layer of this

Fields

keys: Vec<K>

Keys

offs: Vec<usize>

Offsets

vals: L

The next layer down

Implementations

impl<K: Ord + Clone, L: MergeBuilder> OrderedBuilder<K, L>

pub fn merge_step(
    &mut self,
    other1: (&<Self as Builder>::Trie, &mut usize, usize),
    other2: (&<Self as Builder>::Trie, &mut usize, usize)
)

Performs one step of merging.

Trait Implementations

impl<K: Ord + Clone, L: Builder> Builder for OrderedBuilder<K, L>

type Trie = OrderedLayer<K, <L as Builder>::Trie>

The type of collection produced.

fn boundary(&mut self) -> usize

Requests a commitment to the offset of the current-most sub-collection.

fn done(self) -> Self::Trie

Finalizes the building process and returns the collection.

impl<K: Ord + Clone, L: MergeBuilder> MergeBuilder for OrderedBuilder<K, L>

fn with_capacity(other1: &Self::Trie, other2: &Self::Trie) -> Self

Allocates an instance of the builder with sufficient capacity to contain the merged data.

fn copy_range(&mut self, other: &Self::Trie, lower: usize, upper: usize)

Copies sub-collections of other into this collection.

fn push_merge(
    &mut self,
    other1: (&Self::Trie, usize, usize),
    other2: (&Self::Trie, usize, usize)
) -> usize

Merges two sub-collections into one sub-collection.

impl<K: Ord + Clone, L: TupleBuilder> TupleBuilder for OrderedBuilder<K, L>

type Item = (K, <L as TupleBuilder>::Item)

The type of item accepted for construction.

fn new() -> Self

Allocates a new builder.

fn with_capacity(cap: usize) -> Self

Allocates a new builder with capacity for at least cap tuples.

fn push_tuple(&mut self, (key, val): (K, L::Item))

Inserts a new into the collection.