A transaction group is an object wrapper that manages a group of objects as if they were a single object for the purpose of transaction management. All transactions for this group of objects should be performed against the transaction group object, not against individual objects in the group.
Transaction Group Usage
require 'transaction/simple/group' x = "Hello, you." y = "And you, too." g = Transaction::Simple::Group.new(x, y) g.start_transaction(:first) # -> [ x, y ] g.transaction_open?(:first) # -> true x.transaction_open?(:first) # -> true y.transaction_open?(:first) # -> true x.gsub!(/you/, "world") # -> "Hello, world." y.gsub!(/you/, "me") # -> "And me, too." g.start_transaction(:second) # -> [ x, y ] x.gsub!(/world/, "HAL") # -> "Hello, HAL." y.gsub!(/me/, "Dave") # -> "And Dave, too." g.rewind_transaction(:second) # -> [ x, y ] x # -> "Hello, world." y # -> "And me, too." x.gsub!(/world/, "HAL") # -> "Hello, HAL." y.gsub!(/me/, "Dave") # -> "And Dave, too." g.commit_transaction(:second) # -> [ x, y ] x # -> "Hello, HAL." y # -> "And Dave, too." g.abort_transaction(:first) # -> [ x, y ] x = -> "Hello, you." y = -> "And you, too."