Struct EngineBuilder 

pub struct EngineBuilder { /* private fields */ }

Builder for Engine with Phase 2+ configuration options.

with_chunk_capacity and with_memory_limit are no-ops until the relevant pipeline operators use them — they are wired here so callers can set them now and Phase 3/4 work can plug in without API changes.

Implementations

impl EngineBuilder

pub fn new( store: NodeStore, catalog: Catalog, csrs: HashMap<u32, CsrForward>, db_root: impl Into<PathBuf>, ) -> Self

Start building an engine from storage primitives.

pub fn with_chunked_pipeline(self, enabled: bool) -> Self

Enable the chunked vectorized pipeline (equivalent to Engine::with_chunked_pipeline).

pub fn with_chunk_capacity(self, n: usize) -> Self

Override the chunk capacity used by pipeline operators (Phase 4).

Currently a no-op — stored for future use when Phase 4 passes this value into ScanByLabel and other operators.

pub fn with_memory_limit(self, bytes: usize) -> Self

Set the per-query memory limit in bytes (Phase 3).

When the accumulated frontier during two-hop BFS expansion exceeds this budget, the engine returns Error::QueryMemoryExceeded instead of continuing and potentially running out of memory.

Default: usize::MAX (unlimited).

pub fn build(self) -> Engine

Construct the Engine.