fn differential_join_inner<J, Tr2>(
        &mut self,
        prev_keyed: J,
        next_input: Arranged<G, Tr2>,
        mut closure: JoinClosure,
        prev_permutation: Permutation,
        next_permutation: Permutation,
    ) -> (Collection<G, Row>, Collection<G, DataflowError>)
    where
        J: JoinCore<G, Row, Row, repr::Diff>,
        Tr2: TraceReader<Key = Row, Val = Row, Time = G::Timestamp, R = repr::Diff>
            + Clone
            + 'static,
        Tr2::Batch: BatchReader<Row, Tr2::Val, G::Timestamp, repr::Diff> + 'static,
        Tr2::Cursor: Cursor<Row, Tr2::Val, G::Timestamp, repr::Diff> + 'static,
    {
        use differential_dataflow::AsCollection;
        use timely::dataflow::operators::OkErr;

        // Reuseable allocation for unpacking.
        let mut datums = DatumVec::new();
        let mut row_builder = Row::default();
        let permutation = prev_permutation.join(&next_permutation);

        closure.permute(&permutation);
        let (oks, err) = prev_keyed
            .join_core(&next_input, move |key, old, new| {
                let temp_storage = RowArena::new();
                let mut datums_local = datums.borrow_with_many(&[key, old, new]);
                closure
                    .apply(&mut datums_local, &temp_storage, &mut row_builder)
                    .map_err(DataflowError::from)
                    .transpose()
            })
            .inner
            .ok_err(|(x, t, d)| {
                // TODO(mcsherry): consider `ok_err()` for `Collection`.
                match x {
                    Ok(x) => Ok((x, t, d)),
                    Err(x) => Err((x, t, d)),
                }
            });

        (oks.as_collection(), err.as_collection())
    }
/// Joins the arrangement for `next_input` to the arranged version of the
/// join of previous inputs. This is split into its own method to enable
/// reuse of code with different types of `next_input`.
Joins the arrangement for `next_input` to the arranged version of the
join of previous inputs. This is split into its own method to enable
reuse of code with different types of `next_input`.
Joins the arrangement for ` next_input ` to the arranged version of the join of previous inputs . This is split into its own method to enable reuse of code with different types of ` next_input ` .
fn differential_join_inner<J, Tr2>(
        &mut self,
        prev_keyed: J,
        next_input: Arranged<G, Tr2>,
        mut closure: JoinClosure,
        prev_permutation: Permutation,
        next_permutation: Permutation,
    ) -> (Collection<G, Row>, Collection<G, DataflowError>)
    where
        J: JoinCore<G, Row, Row, repr::Diff>,
        Tr2: TraceReader<Key = Row, Val = Row, Time = G::Timestamp, R = repr::Diff>
            + Clone
            + 'static,
        Tr2::Batch: BatchReader<Row, Tr2::Val, G::Timestamp, repr::Diff> + 'static,
        Tr2::Cursor: Cursor<Row, Tr2::Val, G::Timestamp, repr::Diff> + 'static,
    {
        use differential_dataflow::AsCollection;
        use timely::dataflow::operators::OkErr;
        // Reuseable allocation for unpacking.
        let mut datums = DatumVec::new();
        let mut row_builder = Row::default();
        let permutation = prev_permutation.join(&next_permutation);
        closure.permute(&permutation);
        let (oks, err) = prev_keyed
            .join_core(&next_input, move |key, old, new| {
                let temp_storage = RowArena::new();
                let mut datums_local = datums.borrow_with_many(&[key, old, new]);
                closure
                    .apply(&mut datums_local, &temp_storage, &mut row_builder)
                    .map_err(DataflowError::from)
                    .transpose()
            })
            .inner
            .ok_err(|(x, t, d)| {
                // TODO(mcsherry): consider `ok_err()` for `Collection`.
                match x {
                    Ok(x) => Ok((x, t, d)),
                    Err(x) => Err((x, t, d)),
                }
            });
        (oks.as_collection(), err.as_collection())
    }
fn differential_join_inner < J , Tr2 > ( & mut self , prev_keyed : J , next_input : Arranged < G , Tr2 > , mut closure : JoinClosure , prev_permutation : Permutation , next_permutation : Permutation , ) -> ( Collection < G , Row > , Collection < G , DataflowError > ) where J : JoinCore < G , Row , Row , repr :: Diff > , Tr2 : TraceReader < Key = Row , Val = Row , Time = G :: Timestamp , R = repr :: Diff > + Clone + ' static , Tr2 :: Batch : BatchReader < Row , Tr2 :: Val , G :: Timestamp , repr :: Diff > + ' static , Tr2 :: Cursor : Cursor < Row , Tr2 :: Val , G :: Timestamp , repr :: Diff > + ' static , { use differential_dataflow :: AsCollection ; use timely :: dataflow :: operators :: OkErr ; // Reuseable allocation for unpacking. let mut datums = DatumVec :: new ( ) ; let mut row_builder = Row :: default ( ) ; let permutation = prev_permutation . join ( & next_permutation ) ; closure . permute ( & permutation ) ; let ( oks , err ) = prev_keyed . join_core ( & next_input , move | key , old , new | { let temp_storage = RowArena :: new ( ) ; let mut datums_local = datums . borrow_with_many ( & [ key , old , new ] ) ; closure . apply ( & mut datums_local , & temp_storage , & mut row_builder ) . map_err ( DataflowError :: from ) . transpose ( ) } ) . inner . ok_err ( | ( x , t , d ) | { // TODO(mcsherry): consider `ok_err()` for `Collection`. match x { Ok ( x ) => Ok ( ( x , t , d ) ) , Err ( x ) => Err ( ( x , t , d ) ) , } } ) ; ( oks . as_collection ( ) , err . as_collection ( ) ) }
Joins the arrangement for `next_input` to the arranged version of the
join of previous inputs.
Joins the arrangement for ` next_input ` to the arranged version of the join of previous inputs .
&mut self
prev_keyed
J
next_input
Arranged<G, Tr2>
closure
JoinClosure
prev_permutation
Permutation
next_permutation
Permutation
&mut self
prev_keyed
J
next_input
Arranged<G, Tr2>
closure
JoinClosure
prev_permutation
Permutation
next_permutation
Permutation