Struct FlatMapOperator 

pub struct FlatMapOperator<T, R, F, I>
where
    I: IntoIterator<Item = R>,
    F: Fn(T) -> I,
{ /* private fields */ }

Implementations

impl<T, R, F, I> FlatMapOperator<T, R, F, I>

where I: IntoIterator<Item = R>, F: Fn(T) -> I,

pub fn new(f: F) -> Self

Trait Implementations

impl<T, R, F, I> Operator<T, R> for FlatMapOperator<T, R, F, I>

where T: Clone + Send + Sync + 'static, R: Clone + Send + Sync + 'static, F: Fn(T) -> I + Send + Sync, I: IntoIterator<Item = R>,

fn process<'life0, 'async_trait>( &'life0 mut self, record: Record<T>, ) -> Pin<Box<dyn Future<Output = StreamResult<Vec<Record<R>>>> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait,

Process a single record and return zero or more output records

fn init<'life0, 'async_trait>( &'life0 mut self, ) -> Pin<Box<dyn Future<Output = Result<(), StreamError>> + Send + 'async_trait>>

where 'life0: 'async_trait, Self: 'async_trait,

Initialize the operator

fn on_window_trigger<'life0, 'async_trait>( &'life0 mut self, ) -> Pin<Box<dyn Future<Output = Result<Vec<Record<Out>>, StreamError>> + Send + 'async_trait>>

where 'life0: 'async_trait, Self: 'async_trait,

Called when a window is triggered (if windowing is enabled)

fn close<'life0, 'async_trait>( &'life0 mut self, ) -> Pin<Box<dyn Future<Output = Result<(), StreamError>> + Send + 'async_trait>>

where 'life0: 'async_trait, Self: 'async_trait,

Close the operator and release resources