Xitdb.Cursor (xitdb v1.0.1)

Clojure/Datomic-style lazy cursor representing a 9-byte Slot (tag + value) in an immutable xitdb store.

Because %Xitdb.Cursor{} holds only the NIF database resource reference and the 9-byte slot coordinates (tag, tag_id, value), it is a pure Elixir value:

Can be passed across BEAM processes (Task.async/1, GenServers, ETS, LiveView assigns) with zero mutexes or dangling pointer hazards.
Implements Access (cursor["key"], cursor[0], get_in/2, put_in/3, update_in/3, pop_in/2).
Implements Enumerable (Enum.count/1 in $O(1)$ on counted collections, Enum.member?/2 in $O(1)$ / $O(\log N)$ via HAMT/B+Tree lookup, Enum.slice/2 in $O(\log N)$ via index seek, and Enum.to_list/1 / Stream.*).
Implements Inspect with a safe, bounded preview.

Summary

Types

t()

Types

t()

@type t() :: %Xitdb.Cursor{
  db_ref: reference(),
  deleted_paths: MapSet.t(),
  full: boolean(),
  moment: integer(),
  path_steps: [{atom(), String.t() | integer()}],
  staged_ops: list(),
  staged_overrides: map(),
  tag: atom(),
  tag_id: non_neg_integer(),
  tx_mode: boolean(),
  value: integer()
}