Struct Migrator

pub struct Migrator<S> { /* private fields */ }

Migrator is used to apply database migrations.

Implementations

impl<S: Schema> Migrator<S>

pub fn migrate<'a, F, M, N: Schema>( self, t: &'a mut ThreadToken, f: F, ) -> Migrator<N>

where F: FnOnce(&'a Transaction<'a, S>) -> M, M: Migration<'a, From = S, To = N>,

Apply a database migration if the current schema is S. The result is a migrator for the next schema N. This function will panic if the resulting schema is different, but the version matches.

pub fn finish(self, t: &mut ThreadToken) -> Option<Database<S>>

Commit the migration transaction and return a Database. Returns None if the database schema version is newer than S.