Struct DependencyGraph 

pub struct DependencyGraph { /* private fields */ }

The dependency graph of one semantic model and the reports sharing it.

Build it once with DependencyGraph::build, then query: who uses an object (consumers_of), what an object uses (producers_of), and what nothing reaches (unused_objects).

Implementations

impl DependencyGraph

pub fn build(db: &TabularDatabase, reports: &[&ReportModel]) -> Self

Builds the graph for one model and every report that shares it.

Never fails: resolution misses are data, never errors. Passing no reports leaves every model object unused unless a role keeps it alive.

pub fn object_ids(&self) -> impl Iterator<Item = &ObjectId>

Every object in the graph, in build order (model order, then relationships, roles, shared expressions, functions, report measures).

pub fn consumers_of(&self, id: &ObjectId) -> Vec<(ObjectId, Provenance)>

The objects that use id, with what kind of use each edge records — the query the ripbi deps view is built on. Report bindings are not object-to-object edges; they are answered by roots_of.

pub fn producers_of(&self, id: &ObjectId) -> Vec<(ObjectId, Provenance)>

The objects that id uses, with what kind of use each edge records.

pub fn roots(&self) -> &[(ObjectId, Provenance)]

Every reachability root: the report bindings, with their targets and provenance, in report order. Deterministic for a given set of reports.

pub fn roots_of(&self, id: &ObjectId) -> Vec<&Provenance>

The provenance of every report binding that targets id.

pub fn unused_objects(&self) -> Vec<UnusedObject>

Every object reachability never reached, sorted by object identity: the scan findings. Each finding names who still references it — empty for a true orphan, and every referencing object is either itself unused or a key column kept alive only as a relationship endpoint.

Trait Implementations

impl Debug for DependencyGraph

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.