ant-types

Record types of the open Antares (.ant) interchange format: the vocabulary that appears inside a .ant file, and nothing else.

• Graph — Vertex and Edge, with typed properties and optional bitemporal validity (valid_from/valid_to, observed_at, extracted_at).
• Observations — append-only, source-bound atomic facts.
• Evidence — the source material observations and edges cite, with span offsets into the source.
• Beliefs — versioned inferred state derived from observations.
• Schema — OpenSPG-compatible type declarations.
• Authorship — the provenance stamp records can carry.

Property values are typed at SQL fidelity. Legacy scalars stay bare JSON on the wire; the typed additions (decimal, date, time, timestamp, uuid, bytes, sized ints, arrays) travel in a tagged {"$ant": ..., "v": ...} envelope — an object is an envelope only when it has exactly those two keys and $ant names a known type, so a plain JSON document with a $ant field still round-trips as a document.

Decimal is exact: an i128 of unscaled digits plus a scale, never f64. DECIMAL/NUMERIC columns survive digit for digit, scale included (12.3400 keeps its four fraction digits).

The container that carries these records — compression, manifest, trailer, integrity hashing — is the antares-format crate; this crate is just the record vocabulary.

License

Apache-2.0.