Struct QuerySubjectUseCase 

pub struct QuerySubjectUseCase<P, V>
where
    P: PersistencePort + Send + Sync + 'static,
    V: VectorPort + Send + Sync + 'static,
{ /* private fields */ }

Use-case: return the resolved belief for every predicate under a subject.

Generic over persistence and vector ports (mirrors QueryMemoryUseCase).

Implementations

impl<P, V> QuerySubjectUseCase<P, V>

where P: PersistencePort + Send + Sync + 'static, V: VectorPort + Send + Sync + 'static,

pub fn new( persistence: Arc<P>, vector: Option<Arc<V>>, config: EngineConfig, ) -> Self

pub fn execute_with_time( &self, req: QuerySubjectRequest, now: DateTime<Utc>, ) -> Result<QuerySubjectResponse, MemError>

Execute with an explicit now (DETERMINISM — no clock reads here).

Algorithm:

1. list_predicates_for_subject → distinct predicates visible at as_of_tx_time.
2. For each predicate, run the existing QueryMemoryUseCase fold (same valid_at + as_of_tx_time), collecting a SubjectFactEntry.
3. Sort entries by predicate (stable, deterministic output).

pub fn execute( &self, req: QuerySubjectRequest, ) -> Result<QuerySubjectResponse, MemError>

Convenience wrapper that stamps now internally.