Std.Db.Migrate

15 public declarations

• Applied

  One that has already run, as the database records it.

  type
• apply&Std.Db.Driver.Client -> &Std.Db.Driver.Driver -> &Array[Std.Db.Migrate.Migration] -> Result[Int, Std.Db.Migrate.MigrationError]

  Bring the schema to what the program expects, through any driver.

  fn
• digestOf&Std.Db.Migrate.Migration -> Str

  The digest of a migration's statements as they stand.

  fn
• explain&Std.Db.Migrate.MigrationError -> Str

  What a refusal says.

  fn
• migrateStd.Db.Session.Connection -> &Array[Std.Db.Migrate.Migration] -> Result[(Int, Std.Db.Session.Connection), Std.Db.Migrate.MigrationError]

  Bring the schema to what the program expects, on one PostgreSQL session.

  fn
• migrationInt -> Str -> &Array[Str] -> Std.Db.Migrate.Migration

  A migration from its parts.

  fn
• Migration

  One change to a schema.

  type
• MigrationError

  Why a schema will not be changed.

  type
• ordered&Array[Std.Db.Migrate.Migration] -> Array[Std.Db.Migrate.Migration]

  The migrations in version order, which is the order they are considered in.

  fn
• pendingCount&Std.Db.Migrate.Plan -> Int

  How many migrations a plan would run.

  fn
• pendingVersions&Std.Db.Migrate.Plan -> Array[Int]

  The versions a plan would run, in order.

  fn
• plan&Array[Std.Db.Migrate.Migration] -> &Array[Std.Db.Migrate.Applied] -> Result[Std.Db.Migrate.Plan, Std.Db.Migrate.MigrationError]

  What should happen next, decided without a database.

  fn
• Plan

  What should happen next.

  type
• recordOfStd.Db.Session.Connection -> Result[(Array[Std.Db.Migrate.Applied], Std.Db.Session.Connection), Std.Db.Session.DbError]

  The record a database holds.

  fn
• settled&Std.Db.Migrate.Plan -> Bool

  Whether a plan has anything to do.

  fn