reinhardt_query/types/
trigger.rs

1//! Trigger-related types for DDL operations
2
3/// Trigger event type
4///
5/// Specifies which DML operation triggers the trigger execution.
6#[derive(Debug, Clone, PartialEq, Eq)]
7pub enum TriggerEvent {
8	/// INSERT operation
9	Insert,
10	/// UPDATE operation (optionally on specific columns)
11	Update { columns: Option<Vec<String>> },
12	/// DELETE operation
13	Delete,
14}
15
16/// Trigger timing
17///
18/// Specifies when the trigger executes relative to the triggering event.
19#[derive(Debug, Clone, Copy, PartialEq, Eq)]
20pub enum TriggerTiming {
21	/// Execute before the triggering event
22	Before,
23	/// Execute after the triggering event
24	After,
25	/// Execute instead of the triggering event (SQLite views only)
26	InsteadOf,
27}
28
29/// Trigger scope
30///
31/// Specifies whether the trigger executes for each row or once per statement.
32#[derive(Debug, Clone, Copy, PartialEq, Eq)]
33pub enum TriggerScope {
34	/// Execute for each affected row (FOR EACH ROW)
35	Row,
36	/// Execute once per statement (FOR EACH STATEMENT) - PostgreSQL only
37	Statement,
38}
39
40/// Trigger action timing for MySQL
41///
42/// MySQL-specific feature to control trigger execution order.
43#[derive(Debug, Clone, PartialEq, Eq)]
44pub enum TriggerOrder {
45	/// Execute before another trigger
46	Precedes(String),
47	/// Execute after another trigger
48	Follows(String),
49}
50
51/// Trigger body representation
52///
53/// Contains the SQL statements to execute when the trigger fires.
54#[derive(Debug, Clone, PartialEq)]
55pub enum TriggerBody {
56	/// Single SQL statement
57	Single(String),
58	/// Multiple SQL statements (MySQL/SQLite BEGIN...END block)
59	Multiple(Vec<String>),
60	/// PostgreSQL function call (EXECUTE FUNCTION function_name())
61	PostgresFunction(String),
62}
63
64impl TriggerBody {
65	/// Create a single-statement trigger body
66	pub fn single<S: Into<String>>(statement: S) -> Self {
67		Self::Single(statement.into())
68	}
69
70	/// Create a multi-statement trigger body
71	pub fn multiple<I, S>(statements: I) -> Self
72	where
73		I: IntoIterator<Item = S>,
74		S: Into<String>,
75	{
76		Self::Multiple(statements.into_iter().map(|s| s.into()).collect())
77	}
78
79	/// Create a PostgreSQL function call trigger body
80	pub fn postgres_function<S: Into<String>>(function_name: S) -> Self {
81		Self::PostgresFunction(function_name.into())
82	}
83}
reinhardt_query/types/trigger.rs

reinhardt_query/types/
trigger.rs
