surrealdb-core 3.2.2

A scalable, distributed, collaborative, document-graph database, for the realtime web
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

use surrealdb_types::{SqlFormat, ToSql, write_sql};

use crate::sql::Expr;
use crate::sql::statements::alter::AlterKind;

#[derive(Clone, Debug, Default, Eq, PartialEq)]
/// AST node for `ALTER SYSTEM`.
///
/// Supported operations:
/// - `QUERY_TIMEOUT <duration>`: sets the global query timeout
/// - `DROP QUERY_TIMEOUT`: clears the global query timeout
/// - `COMPACT`: requests datastore‑wide compaction
pub struct AlterSystemStatement {
	/// Tri‑state alteration for the `QUERY_TIMEOUT` parameter.
	pub query_timeout: AlterKind<Expr>,
	/// When true, emits `COMPACT`.
	pub compact: bool,
}

impl ToSql for AlterSystemStatement {
	fn fmt_sql(&self, f: &mut String, fmt: SqlFormat) {
		write_sql!(f, fmt, "ALTER SYSTEM");
		match &self.query_timeout {
			AlterKind::None => {}
			AlterKind::Set(duration) => {
				write_sql!(f, fmt, " QUERY_TIMEOUT {}", duration);
			}
			AlterKind::Drop => {
				write_sql!(f, fmt, " DROP QUERY_TIMEOUT");
			}
		}
		if self.compact {
			write_sql!(f, fmt, " COMPACT");
		}
	}
}

impl From<AlterSystemStatement> for crate::expr::statements::alter::AlterSystemStatement {
	fn from(v: AlterSystemStatement) -> Self {
		crate::expr::statements::alter::AlterSystemStatement {
			query_timeout: v.query_timeout.into(),
			compact: v.compact,
		}
	}
}
impl From<crate::expr::statements::alter::AlterSystemStatement> for AlterSystemStatement {
	fn from(v: crate::expr::statements::alter::AlterSystemStatement) -> Self {
		AlterSystemStatement {
			query_timeout: v.query_timeout.into(),
			compact: v.compact,
		}
	}
}