Struct TriggerInfo 

pub struct TriggerInfo {
    pub name: Vec<u8>,
    pub folded: Vec<u8>,
    pub time: TriggerTime,
    pub event: TriggerEventInfo,
    pub ast: Ast,
    pub when: Option<ExprId>,
    pub body: Vec<Statement>,
    pub table_database: Option<Vec<u8>>,
}

A trigger’s parsed definition.

Kept parsed here for the same reason a view body is: the arena belongs to the catalog snapshot, which the binder holds for the whole statement, so a body can be bound in place. A body re-parsed inside the binder would be a local whose borrow ends before the bound tree does.

Fields

name: Vec<u8>

The trigger name as declared.

folded: Vec<u8>

The ASCII-folded lookup key.

time: TriggerTime

When it fires. CREATE TRIGGER with no time written means BEFORE.

event: TriggerEventInfo

What it fires on.

ast: Ast

The arena the WHEN guard and the body were parsed into.

when: Option<ExprId>

The WHEN guard, when one was written.

body: Vec<Statement>

The body statements, in written order.

table_database: Option<Vec<u8>>

The folded database the ON clause named, as in ON main.t, when it named one.

Implementations

impl TriggerInfo

pub fn fires_for(&self, event: &TriggerEventInfo, changed: &[Vec<u8>]) -> bool

Returns whether this trigger fires for one event on one column set.

changed is the folded names an UPDATE assigns, and is empty for the other two events. UPDATE OF a, b fires only when the statement writes a or b - which SQLite decides from the statement, not from whether the value actually differs.

Trait Implementations

impl Clone for TriggerInfo

fn clone(&self) -> Self

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for TriggerInfo

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Eq for TriggerInfo

impl PartialEq for TriggerInfo

fn eq(&self, other: &Self) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for TriggerInfo