icydb-core 0.94.0

IcyDB — A schema-first typed query engine and persistence runtime for Internet Computer canisters
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129

use super::*;

#[test]
fn plan_fingerprint_hasher_profile_seed_matches_manual_contract() {
    let mut helper = new_plan_fingerprint_hasher();
    helper.update(b"payload");

    let mut manual = Sha256::new();
    manual.update(b"planfp");
    manual.update(b"payload");

    assert_eq!(helper.finalize(), manual.finalize());
}

#[test]
fn continuation_signature_hasher_profile_seed_matches_manual_contract() {
    let mut helper = new_continuation_signature_hasher();
    helper.update(b"payload");

    let mut manual = Sha256::new();
    manual.update(b"contsig");
    manual.update(b"payload");

    assert_eq!(helper.finalize(), manual.finalize());
}

#[test]
fn fingerprint_is_deterministic_for_equivalent_predicates() {
    let id = Ulid::default();

    let predicate_a = Predicate::And(vec![
        FieldRef::new("id").eq(id),
        FieldRef::new("other").eq(Value::Text("x".to_string())),
    ]);
    let predicate_b = Predicate::And(vec![
        FieldRef::new("other").eq(Value::Text("x".to_string())),
        FieldRef::new("id").eq(id),
    ]);

    let mut plan_a: AccessPlannedQuery = full_scan_query();
    plan_a.scalar_plan_mut().predicate = Some(predicate_a);

    let mut plan_b: AccessPlannedQuery = full_scan_query();
    plan_b.scalar_plan_mut().predicate = Some(predicate_b);

    assert_eq!(plan_a.fingerprint(), plan_b.fingerprint());
}

#[test]
fn fingerprint_is_deterministic_for_by_keys() {
    let a = Ulid::from_u128(1);
    let b = Ulid::from_u128(2);

    let access_a = build_access_plan_from_keys(&KeyAccess::Many(vec![a, b, a]));
    let access_b = build_access_plan_from_keys(&KeyAccess::Many(vec![b, a]));

    let plan_a: AccessPlannedQuery = AccessPlannedQuery {
        logical: LogicalPlan::Scalar(ScalarPlan {
            mode: QueryMode::Load(LoadSpec::new()),
            predicate: None,
            order: None,
            distinct: false,
            delete_limit: None,
            page: None,
            consistency: MissingRowPolicy::Ignore,
        }),
        access: access_a,
        projection_selection: ProjectionSelection::All,
        access_choice: crate::db::query::plan::AccessChoiceExplainSnapshot::non_index_access(),
        planner_route_profile: crate::db::query::plan::PlannerRouteProfile::seeded_unfinalized(
            false,
        ),
        static_planning_shape: None,
    };
    let plan_b: AccessPlannedQuery = AccessPlannedQuery {
        logical: LogicalPlan::Scalar(ScalarPlan {
            mode: QueryMode::Load(LoadSpec::new()),
            predicate: None,
            order: None,
            distinct: false,
            delete_limit: None,
            page: None,
            consistency: MissingRowPolicy::Ignore,
        }),
        access: access_b,
        projection_selection: ProjectionSelection::All,
        access_choice: crate::db::query::plan::AccessChoiceExplainSnapshot::non_index_access(),
        planner_route_profile: crate::db::query::plan::PlannerRouteProfile::seeded_unfinalized(
            false,
        ),
        static_planning_shape: None,
    };

    assert_eq!(plan_a.fingerprint(), plan_b.fingerprint());
}

#[test]
fn fingerprint_is_stable_for_full_scan() {
    let plan: AccessPlannedQuery = full_scan_query();
    let fingerprint_a = plan.fingerprint();
    let fingerprint_b = plan.fingerprint();
    assert_eq!(fingerprint_a, fingerprint_b);
}

#[test]
fn fingerprint_is_stable_for_equivalent_index_range_bounds() {
    const INDEX_FIELDS: [&str; 2] = ["group", "rank"];
    const INDEX: IndexModel = IndexModel::generated(
        "fingerprint::group_rank",
        "fingerprint::store",
        &INDEX_FIELDS,
        false,
    );

    let plan_a: AccessPlannedQuery = index_range_query(
        INDEX,
        vec![Value::Uint(7)],
        Bound::Included(Value::Uint(100)),
        Bound::Excluded(Value::Uint(200)),
    );
    let plan_b: AccessPlannedQuery = index_range_query(
        INDEX,
        vec![Value::Uint(7)],
        Bound::Included(Value::Uint(100)),
        Bound::Excluded(Value::Uint(200)),
    );

    assert_eq!(plan_a.fingerprint(), plan_b.fingerprint());
}