Struct ImpactAnalysisEngine 

pub struct ImpactAnalysisEngine { /* private fields */ }

Impact analysis engine with two-step preview/confirm API

This engine enables safe confidence propagation by:

1. Saving state snapshot before computing cascade
2. Returning preview data for review
3. Applying changes only after explicit confirmation
4. Supporting revert within time window

Implementations

impl ImpactAnalysisEngine

pub fn new(board: Arc<HypothesisBoard>, graph: Arc<BeliefGraph>) -> Self

Create a new impact analysis engine

pub fn with_config( board: Arc<HypothesisBoard>, graph: Arc<BeliefGraph>, config: PropagationConfig, ) -> Self

Create engine with custom propagation config

pub fn with_page_size(self, page_size: usize) -> Self

Set custom page size for pagination

pub async fn preview( &self, start_hypothesis: HypothesisId, new_confidence: Confidence, ) -> Result<CascadePreview>

Step 1: Preview cascade effects

Saves a snapshot before computing the cascade, then returns a preview showing all affected hypotheses.

pub async fn confirm(&self, preview_id: &PreviewId) -> Result<PropagationResult>

Step 2: Confirm and apply changes from preview

Applies the confidence changes computed in the preview step. Returns error if preview_id not found or expired.

pub fn get_preview_page( &self, preview_id: &PreviewId, page_number: usize, ) -> Result<PreviewPage>

Get a paginated page from a preview

pub async fn impact_radius(&self, start: HypothesisId) -> Result<usize>

Query impact radius (count of affected hypotheses)

pub async fn revert(&self, snapshot_id: &SnapshotId) -> Result<()>

Revert to a previous snapshot

Restores hypotheses and dependencies from the snapshot. Returns error if snapshot not found or expired.

pub async fn list_snapshots(&self) -> Vec<BeliefSnapshot>

List all active snapshots

pub async fn get_snapshot(&self, id: &SnapshotId) -> Option<BeliefSnapshot>

Get snapshot data for inspection