Struct Migration 

pub struct Migration {
    pub version: i64,
    pub name: &'static str,
    pub apply: fn(&Transaction<'_>) -> Result<(), Error>,
}

One schema migration step for a domain.

Fields

version: i64

Target version this migration brings the domain to. Versions are contiguous and start at 1.

name: &'static str

Stable human-readable name (shows up in errors and reports).

apply: fn(&Transaction<'_>) -> Result<(), Error>

The migration body. Runs inside the runner’s IMMEDIATE transaction; it must not end that transaction (nested savepoints of its own are fine). Bodies lifted from historical upgrade functions keep their internal idempotence guards.

Trait Implementations

impl Debug for Migration

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

Formats the value using the given formatter.