dbkit-core 0.3.1

Core types and SQL building blocks for the dbkit ORM.
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
135
136
137
138
139

use chrono::{NaiveDate, NaiveDateTime, NaiveTime};
use dbkit_core::{expr::Value, row, Column, Select, Table};

#[derive(Debug)]
struct LookupEntry;

#[derive(Debug)]
struct RevisionSnapshot;

fn lookup_entries_table() -> Table {
    Table::new("lookup_entries")
}

fn lookup_entry_namespace() -> Column<LookupEntry, String> {
    Column::new(lookup_entries_table(), "namespace")
}

fn lookup_entry_name() -> Column<LookupEntry, String> {
    Column::new(lookup_entries_table(), "name")
}

fn lookup_entry_locale() -> Column<LookupEntry, String> {
    Column::new(lookup_entries_table(), "locale")
}

fn revision_snapshots_table() -> Table {
    Table::new("revision_snapshots")
}

fn revision_snapshot_series_id() -> Column<RevisionSnapshot, i64> {
    Column::new(revision_snapshots_table(), "series_id")
}

fn revision_snapshot_revision() -> Column<RevisionSnapshot, i32> {
    Column::new(revision_snapshots_table(), "revision")
}

fn revision_snapshot_captured_at() -> Column<RevisionSnapshot, NaiveDateTime> {
    Column::new(revision_snapshots_table(), "captured_at")
}

#[test]
fn compiles_row_value_in_expression_for_three_columns() {
    let compiled = Select::<LookupEntry>::new(lookup_entries_table())
        .filter(
            row((lookup_entry_namespace(), lookup_entry_name(), lookup_entry_locale()))
                .in_([("cities", "berlin", "en"), ("countries", "germany", "de")]),
        )
        .compile();

    assert_eq!(
        compiled.sql,
        "SELECT lookup_entries.* FROM lookup_entries WHERE ((lookup_entries.namespace, lookup_entries.name, lookup_entries.locale) IN (($1, $2, $3), ($4, $5, $6)))"
    );
    assert_eq!(
        compiled.binds,
        vec![
            Value::String("cities".to_string()),
            Value::String("berlin".to_string()),
            Value::String("en".to_string()),
            Value::String("countries".to_string()),
            Value::String("germany".to_string()),
            Value::String("de".to_string()),
        ]
    );
}

#[test]
fn row_value_in_empty_compiles_to_false_without_binds() {
    let compiled = Select::<LookupEntry>::new(lookup_entries_table())
        .filter(row((lookup_entry_namespace(), lookup_entry_name(), lookup_entry_locale())).in_(std::iter::empty::<(&str, &str, &str)>()))
        .compile();

    assert_eq!(compiled.sql, "SELECT lookup_entries.* FROM lookup_entries WHERE (FALSE)");
    assert!(compiled.binds.is_empty());
}

#[test]
fn row_value_in_reuses_identical_binds_across_rows() {
    let compiled = Select::<LookupEntry>::new(lookup_entries_table())
        .filter(
            row((lookup_entry_namespace(), lookup_entry_name(), lookup_entry_locale()))
                .in_([("cities", "berlin", "en"), ("cities", "munich", "de")]),
        )
        .compile();

    assert_eq!(
        compiled.sql,
        "SELECT lookup_entries.* FROM lookup_entries WHERE ((lookup_entries.namespace, lookup_entries.name, lookup_entries.locale) IN (($1, $2, $3), ($1, $4, $5)))"
    );
    assert_eq!(
        compiled.binds,
        vec![
            Value::String("cities".to_string()),
            Value::String("berlin".to_string()),
            Value::String("en".to_string()),
            Value::String("munich".to_string()),
            Value::String("de".to_string()),
        ]
    );
}

#[test]
fn row_value_in_supports_mixed_integer_and_timestamp_types() {
    let first = NaiveDateTime::new(
        NaiveDate::from_ymd_opt(2024, 1, 2).expect("date"),
        NaiveTime::from_hms_opt(3, 4, 5).expect("time"),
    );
    let second = NaiveDateTime::new(
        NaiveDate::from_ymd_opt(2024, 1, 3).expect("date"),
        NaiveTime::from_hms_opt(6, 7, 8).expect("time"),
    );

    let compiled = Select::<RevisionSnapshot>::new(revision_snapshots_table())
        .filter(
            row((
                revision_snapshot_series_id(),
                revision_snapshot_revision(),
                revision_snapshot_captured_at(),
            ))
            .in_([(11_i64, 1_i32, first), (11_i64, 2_i32, second)]),
        )
        .compile();

    assert_eq!(
        compiled.sql,
        "SELECT revision_snapshots.* FROM revision_snapshots WHERE ((revision_snapshots.series_id, revision_snapshots.revision, revision_snapshots.captured_at) IN (($1, $2, $3), ($1, $4, $5)))"
    );
    assert_eq!(
        compiled.binds,
        vec![
            Value::I64(11),
            Value::I32(1),
            Value::DateTime(first),
            Value::I32(2),
            Value::DateTime(second),
        ]
    );
}