Trait timely::dataflow::operators::unary::Unary [−] [src]

pub trait Unary<G: Scope, D1: Data> {
    fn unary_stream<D2, L, P>(&self, pact: P, name: &str, logic: L) -> Stream<G, D2> where D2: Data, L: FnMut(&mut InputHandle<G::Timestamp, D1>, &mut OutputHandle<G::Timestamp, D2, Tee<G::Timestamp, D2>>) + 'static, P: ParallelizationContract<G::Timestamp, D1>;
    fn unary_notify<D2, L, P>(&self, pact: P, name: &str, init: Vec<G::Timestamp>, logic: L) -> Stream<G, D2> where D2: Data, L: FnMut(&mut InputHandle<G::Timestamp, D1>, &mut OutputHandle<G::Timestamp, D2, Tee<G::Timestamp, D2>>, &mut Notificator<G::Timestamp>) + 'static, P: ParallelizationContract<G::Timestamp, D1>;
}

Methods to construct generic streaming and blocking unary operators.

Required Methods

fn unary_stream<D2, L, P>(&self, pact: P, name: &str, logic: L) -> Stream<G, D2> where D2: Data, L: FnMut(&mut InputHandle<G::Timestamp, D1>, &mut OutputHandle<G::Timestamp, D2, Tee<G::Timestamp, D2>>) + 'static, P: ParallelizationContract<G::Timestamp, D1>

Creates a new dataflow operator that partitions its input stream by a parallelization strategy pact, and repeatedly invokes logic which can read from the input stream and write to the output stream.

Examples

use timely::dataflow::operators::{ToStream, Unary};
use timely::dataflow::channels::pact::Pipeline;

timely::example(|scope| {
    (0..10).to_stream(scope)
           .unary_stream(Pipeline, "example", |input, output| {
               while let Some((time, data)) = input.next() {
                   output.session(&time).give_content(data);
               }
           });
});

fn unary_notify<D2, L, P>(&self, pact: P, name: &str, init: Vec<G::Timestamp>, logic: L) -> Stream<G, D2> where D2: Data, L: FnMut(&mut InputHandle<G::Timestamp, D1>, &mut OutputHandle<G::Timestamp, D2, Tee<G::Timestamp, D2>>, &mut Notificator<G::Timestamp>) + 'static, P: ParallelizationContract<G::Timestamp, D1>

Creates a new dataflow operator that partitions its input stream by a parallelization strategy pact, and repeatedly invokes logic which can read from the input stream, write to the output stream, and request and receive notifications. The method also requires a vector of the initial notifications the operator requires (commonly none).

Examples

use timely::dataflow::operators::{ToStream, Unary};
use timely::dataflow::channels::pact::Pipeline;

timely::example(|scope| {
    (0..10).to_stream(scope)
           .unary_notify(Pipeline, "example", Vec::new(), |input, output, notificator| {
               while let Some((time, data)) = input.next() {
                   output.session(&time).give_content(data);
                   notificator.notify_at(time);
               }
               while let Some((time, count)) = notificator.next() {
                   println!("done with time: {:?}", time.time());
               }
           });
});

Implementors