Module: Keymap::ConnectionAdapters::TransactionManagement

Included in:
AbstractAdapter
Defined in:
lib/keymap/connection_adapters/abstract/transaction_management.rb

Instance Method Summary collapse

Instance Method Details

#outside_transaction? ⇒ Boolean

Checks whether there is currently no transaction active. This is done by querying the database driver, and does not use the transaction house-keeping information recorded by #increment_open_transactions and friends.

Returns true if there is no transaction active, false if there is a transaction active, and nil if this information is unknown.

Not all adapters supports transaction state introspection.

Returns:

  • (Boolean) 


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# File 'lib/keymap/connection_adapters/abstract/transaction_management.rb', line 17

def outside_transaction?
  nil
end

#transaction(options = {}) ⇒ Object

Runs the given block in a database transaction, and returns the result of the block.



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# File 'lib/keymap/connection_adapters/abstract/transaction_management.rb', line 23

def transaction(options = {})
  transaction_open = false
  @_current_transaction_records ||= []
  begin
    if block_given?
      begin_db_transaction
      transaction_open = true
      @_current_transaction_records.push([])
      yield
    end
  rescue Exception => database_transaction_rollback
    if transaction_open && !outside_transaction?
      transaction_open = false
      rollback_db_transaction
    end
    raise unless database_transaction_rollback.is_a?(Rollback)
  end
ensure
  if transaction_open
    begin
      commit_db_transaction
    rescue Exception => database_transaction_rollback
      rollback_db_transaction
      raise
    end
  end
end