Module: FileTransactions

Defined in:
lib/file_transactions.rb,
lib/file_transactions/error.rb,
lib/file_transactions/version.rb,
lib/file_transactions/transaction.rb,
lib/file_transactions/base_command.rb,
lib/file_transactions/move_file_command.rb,
lib/file_transactions/change_file_command.rb,
lib/file_transactions/create_file_command.rb,
lib/file_transactions/delete_file_command.rb,
lib/file_transactions/create_directory_command.rb

Defined Under Namespace

Classes: BaseCommand, ChangeFileCommand, CreateDirectoryCommand, CreateFileCommand, DeleteFileCommand, Error, MoveFileCommand, Rollback, Transaction

Constant Summary collapse

VERSION = 
"1.1.4"

Class Method Summary collapse

Class Method Details

.transaction(&block) ⇒ Object

This method runs the block inside a transaction

Examples

FileTransactions.transaction do
  CreateFileCommand.execute('new_file') { 'hello' }
  ChangeFileCommand.execute('new_file') { 'world' }
end

FileTransactions.transaction do
  CreateFileCommand.execute('new_file') { 'hello' }
  DeleteFileCommand.execute('some_file')

  # An exception will make the transaction be rolled back. E.g
  # 'new_file' will be removed again and 'some_file' will be restored
  raise "foobar"
end

# Create an alias for FileTransactions
FT = FileTransactions

FT.transaction do
  CreateFileCommand.execute('new_file') { 'hello' }

  FT.transaction do
    ChangeFileCommand.execute('new_file') { 'world' }

    # This rolls back the current transaction but not the outer transaction
    raise FT::Rollback
  end
end



45
46
47
 
# File 'lib/file_transactions.rb', line 45

def self.transaction(&block)
  Transaction.run(&block)
end