a3s_orm/compiler/
dialect.rs

1pub trait Dialect: Send + Sync {
2    fn name(&self) -> &'static str;
3    fn identifier_quote(&self) -> char;
4    fn placeholder(&self, index: usize) -> String;
5    fn supports_returning(&self) -> bool;
6    fn supports_on_conflict(&self) -> bool;
7    /// Whether the dialect accepts the typed SELECT row-locking clause.
8    fn supports_select_row_locking(&self) -> bool {
9        false
10    }
11    /// Whether the dialect accepts PostgreSQL-style typed table locks.
12    fn supports_table_locking(&self) -> bool {
13        false
14    }
15}
16
17#[derive(Clone, Copy, Debug, Default)]
18pub struct PostgresDialect;
19
20impl Dialect for PostgresDialect {
21    fn name(&self) -> &'static str {
22        "PostgreSQL"
23    }
24
25    fn identifier_quote(&self) -> char {
26        '"'
27    }
28
29    fn placeholder(&self, index: usize) -> String {
30        format!("${index}")
31    }
32
33    fn supports_returning(&self) -> bool {
34        true
35    }
36
37    fn supports_on_conflict(&self) -> bool {
38        true
39    }
40
41    fn supports_select_row_locking(&self) -> bool {
42        true
43    }
44
45    fn supports_table_locking(&self) -> bool {
46        true
47    }
48}
49
50#[derive(Clone, Copy, Debug, Default)]
51pub struct SqliteDialect;
52
53impl Dialect for SqliteDialect {
54    fn name(&self) -> &'static str {
55        "SQLite"
56    }
57
58    fn identifier_quote(&self) -> char {
59        '"'
60    }
61
62    fn placeholder(&self, _index: usize) -> String {
63        "?".to_string()
64    }
65
66    fn supports_returning(&self) -> bool {
67        true
68    }
69
70    fn supports_on_conflict(&self) -> bool {
71        true
72    }
73}
74
75#[derive(Clone, Copy, Debug, Default)]
76pub struct MysqlDialect;
77
78impl Dialect for MysqlDialect {
79    fn name(&self) -> &'static str {
80        "MySQL"
81    }
82
83    fn identifier_quote(&self) -> char {
84        '`'
85    }
86
87    fn placeholder(&self, _index: usize) -> String {
88        "?".to_string()
89    }
90
91    fn supports_returning(&self) -> bool {
92        false
93    }
94
95    fn supports_on_conflict(&self) -> bool {
96        false
97    }
98}
a3s_orm/compiler/dialect.rs

a3s_orm/compiler/
dialect.rs
