Class | Sequel::TimestampMigrator |
In: |
lib/sequel/extensions/migration.rb
|
Parent: | Migrator |
The migrator used if any migration file version is greater than 20000101. Stores filenames of migration files, and can figure out which migrations have not been applied and apply them, even if earlier migrations are added after later migrations. If you plan to do that, the responsibility is on you to make sure the migrations don‘t conflict. Part of the migration extension.
Error | = | Migrator::Error |
applied_migrations | [R] | Array of strings of applied migration filenames |
migration_tuples | [R] | Get tuples of migrations, filenames, and actions for each migration |
Set up all state for the migrator instance
# File lib/sequel/extensions/migration.rb, line 670 670: def initialize(db, directory, opts=OPTS) 671: super 672: @target = opts[:target] 673: @applied_migrations = get_applied_migrations 674: @migration_tuples = get_migration_tuples 675: end
The timestamp migrator is current if there are no migrations to apply in either direction.
# File lib/sequel/extensions/migration.rb, line 679 679: def is_current? 680: migration_tuples.empty? 681: end
Apply all migration tuples on the database
# File lib/sequel/extensions/migration.rb, line 684 684: def run 685: migration_tuples.each do |m, f, direction| 686: t = Time.now 687: db.log_info("Begin applying migration #{f}, direction: #{direction}") 688: checked_transaction(m) do 689: m.apply(db, direction) 690: fi = f.downcase 691: direction == :up ? ds.insert(column=>fi) : ds.where(column=>fi).delete 692: end 693: db.log_info("Finished applying migration #{f}, direction: #{direction}, took #{sprintf('%0.6f', Time.now - t)} seconds") 694: end 695: nil 696: end