Struct ChoiceSegment 

pub struct ChoiceSegment {
    pub clauses: Vec<WhenClauseSegment>,
    pub otherwise: Option<OutcomeSegment>,
}

Outcome-aware structural EIP segment for the Choice pattern.

Evaluates when clauses in order. The first matching predicate runs its body (which can return Completed, Stopped, or Failed). If no predicate matches, the otherwise segment runs (if present); otherwise returns Completed(original_exchange).

Unlike ChoiceService (which operates at the Tower layer and cannot preserve Stopped(ex) with mutations), ChoiceSegment operates at the PipelineOutcome layer and preserves the exchange at the Stop point including all mutations.

Fields

clauses: Vec<WhenClauseSegment>

otherwise: Option<OutcomeSegment>

Trait Implementations

impl Clone for ChoiceSegment

fn clone(&self) -> Self

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl OutcomePipeline for ChoiceSegment

fn clone_box(&self) -> Box<dyn OutcomePipeline>

Clone the segment into a new boxed instance. Required because Box<dyn OutcomePipeline> cannot directly derive Clone.

fn run<'a>( &'a mut self, exchange: Exchange, ) -> Pin<Box<dyn Future<Output = PipelineOutcome> + Send + 'a>>

Execute the segment against exchange, returning a PipelineOutcome.