Duty from entering a state

Intention

I want to count the duty window from an event of entering a state.

Correct formFrozen execution sceneBoundary

Incorrect form and why it stays silent

Incorrect form

// initial_state(p) считают событием-носителем с известным временем.

An initial state has no entry event. Until the instance carrier there is no Reply; binder e belongs to activation, not to the rule body.

Correct form

Arxo Law

language "law.core" version "0.2";
package recipes.a.r10 version "0.1.0";
namespace "urn:recipe:a-positions:10";

entity Person;
relation registered(p: Person);
relation done(p: Person);
event Entered { }
relation entered_state(p: Person, e: Entered);
relation initial_state(p: Person);
rule R strict { for p: Person; for e: Entered; when registered(p);
    then duty Reply { bearer p; activation entered_state(p, e);
        achieve done(p) during [e.time.start, @2026-09-10T09:00:00+05:00]; };
}

Frozen execution scene

Facts and snapshot	Question	Answer
initial state only; 2026-09-05T09:00:00+05:00	positions()	not positions_present(); / COMPUTED
entry carrier; 2026-09-05T09:00:00+05:00	positions()	position_count(Reply, ACTIVE, 1); / COMPUTED

initial state creates no position

Arxo Law

test "initial state creates no position" {
    given {
        context {
            legal_time @2026-09-05T09:00:00+05:00;
            decision_time @2026-09-05T09:00:00+05:00;
            knowledge_time @2026-09-30T09:00:00+05:00;
            timezone "Asia/Almaty";
        }
        assert registered(entity_ref("urn:recipe:a-positions:10:p")); assert initial_state(entity_ref("urn:recipe:a-positions:10:p"));
    }
    evaluate positions();
    expect not positions_present();
    expect evaluation_status == COMPUTED;

}

entry carrier activates duty

Arxo Law

test "entry carrier activates duty" {
    given {
        context {
            legal_time @2026-09-05T09:00:00+05:00;
            decision_time @2026-09-05T09:00:00+05:00;
            knowledge_time @2026-09-30T09:00:00+05:00;
            timezone "Asia/Almaty";
        }
        assert registered(entity_ref("urn:recipe:a-positions:10:p")); assert entered_state(entity_ref("urn:recipe:a-positions:10:p"), Entered { id: "entry-1", time: @2026-09-02T09:00:00+05:00 });
    }
    evaluate positions();
    expect position_count(Reply, ACTIVE, 1);
    expect evaluation_status == COMPUTED;

}

Extra scene: with declaration event Entered { actor: Person; } and an actor field in the record the normative expectation is executed — e.time.start reads through the record with entity_ref, and the Reply position is created ACTIVE. The minimal scene above uses an event without an extra field; the person is bound by the entered_state relation.

actor field carrier creates position

Arxo Law

test "actor field carrier creates position" {
    given {
        context {
            legal_time @2026-09-05T09:00:00+05:00;
            decision_time @2026-09-05T09:00:00+05:00;
            knowledge_time @2026-09-30T09:00:00+05:00;
            timezone "Asia/Almaty";
        }
        assert registered(entity_ref("urn:recipe:a-positions:10:p")); assert entered_state(entity_ref("urn:recipe:a-positions:10:p"), Entered { id: "entry-1", time: @2026-09-02T09:00:00+05:00, actor: entity_ref("urn:recipe:a-positions:10:p") });
    }
    evaluate positions();
    expect position_count(Reply, ACTIVE, 1);
    expect evaluation_status == COMPUTED;

}

Python

>>> import runpy
>>> check = runpy.run_path("docs/recipes/a-positions/resources/check.py")
>>> check["check_event_record"]()
'А10: носитель с полем actor создаёт позицию; lawc = lawref'

Counterfactual

Mutation: activation entered_state(p, e); → activation entered_state(p, e) and entered_state(p, other);; rejection LDC-E1330. Additional counterfactuals are shown as separate scenes.

Boundary

entered_state here is an explicit profile entry, not a procedure implementation. Folding of transitions is covered by Check event type and transition conditions; the carrier time follows the event canon.