aedb 0.2.1

Embedded Rust storage engine with transactional commits, WAL durability, and snapshot-consistent reads
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
130
131
132
133
134

use aedb::AedbInstance;
use aedb::catalog::DdlOperation;
use aedb::catalog::schema::ColumnDef;
use aedb::catalog::types::{ColumnType, Row, Value};
use aedb::commit::validation::Mutation;
use aedb::query::plan::{Aggregate, Expr, Order, Query};
use tempfile::tempdir;

#[tokio::test]
async fn integration_query_core_operations_filter_order_limit_aggregate_and_delete() {
    let dir = tempdir().expect("temp");
    let db = AedbInstance::open(Default::default(), dir.path()).expect("open");
    db.create_project("qcore").await.expect("project");

    db.commit(Mutation::Ddl(DdlOperation::CreateTable {
        owner_id: None,
        if_not_exists: false,
        project_id: "qcore".into(),
        scope_id: "app".into(),
        table_name: "orders".into(),
        columns: vec![
            ColumnDef {
                name: "id".into(),
                col_type: ColumnType::Integer,
                nullable: false,
            },
            ColumnDef {
                name: "category".into(),
                col_type: ColumnType::Text,
                nullable: false,
            },
            ColumnDef {
                name: "amount".into(),
                col_type: ColumnType::Integer,
                nullable: false,
            },
            ColumnDef {
                name: "status".into(),
                col_type: ColumnType::Text,
                nullable: false,
            },
        ],
        primary_key: vec!["id".into()],
    }))
    .await
    .expect("orders table");

    for (id, category, amount, status) in [
        (1_i64, "books", 30_i64, "open"),
        (2, "books", 90, "open"),
        (3, "books", 60, "closed"),
        (4, "games", 110, "open"),
        (5, "games", 20, "open"),
        (6, "music", 55, "open"),
    ] {
        db.commit(Mutation::Upsert {
            project_id: "qcore".into(),
            scope_id: "app".into(),
            table_name: "orders".into(),
            primary_key: vec![Value::Integer(id)],
            row: Row::from_values(vec![
                Value::Integer(id),
                Value::Text(category.into()),
                Value::Integer(amount),
                Value::Text(status.into()),
            ]),
        })
        .await
        .expect("seed order");
    }

    let filtered = db
        .query(
            "qcore",
            "app",
            Query::select(&["id", "amount"])
                .from("orders")
                .where_(
                    Expr::Eq("status".into(), Value::Text("open".into()))
                        .and(Expr::Gte("amount".into(), Value::Integer(50))),
                )
                .order_by("amount", Order::Desc)
                .limit(2),
        )
        .await
        .expect("filtered query");
    assert_eq!(filtered.rows.len(), 2);
    assert_eq!(filtered.rows[0].values[0], Value::Integer(4));
    assert_eq!(filtered.rows[0].values[1], Value::Integer(110));
    assert_eq!(filtered.rows[1].values[0], Value::Integer(2));
    assert_eq!(filtered.rows[1].values[1], Value::Integer(90));

    let grouped = db
        .query(
            "qcore",
            "app",
            Query::select(&["category", "sum_amount", "count_star"])
                .from("orders")
                .where_(Expr::Eq("status".into(), Value::Text("open".into())))
                .group_by(&["category"])
                .aggregate(Aggregate::Sum("amount".into()))
                .aggregate(Aggregate::Count)
                .having(Expr::Eq("category".into(), Value::Text("books".into())))
                .order_by("category", Order::Asc),
        )
        .await
        .expect("grouped query");
    assert_eq!(grouped.rows.len(), 1);
    assert_eq!(grouped.rows[0].values[0], Value::Text("books".into()));
    assert_eq!(grouped.rows[0].values[1], Value::Integer(120));
    assert_eq!(grouped.rows[0].values[2], Value::Integer(2));

    db.commit(Mutation::Delete {
        project_id: "qcore".into(),
        scope_id: "app".into(),
        table_name: "orders".into(),
        primary_key: vec![Value::Integer(2)],
    })
    .await
    .expect("delete order");

    let deleted = db
        .query(
            "qcore",
            "app",
            Query::select(&["id"])
                .from("orders")
                .where_(Expr::Eq("id".into(), Value::Integer(2)))
                .limit(1),
        )
        .await
        .expect("post delete query");
    assert!(deleted.rows.is_empty(), "deleted row must not be visible");
}