instance method save

# File actionpack/lib/action_controller/session/active_record_store.rb, line 246
        def save
          return false if !loaded?
          marshaled_data = self.class.marshal(data)

          if @new_record
            @new_record = false
            @@connection.update <<-end_sql, 'Create session'
              INSERT INTO #{@@table_name} (
                #{@@connection.quote_column_name(@@session_id_column)},
                #{@@connection.quote_column_name(@@data_column)} )
              VALUES (
                #{@@connection.quote(session_id)},
                #{@@connection.quote(marshaled_data)} )
            end_sql
          else
            @@connection.update <<-end_sql, 'Update session'
              UPDATE #{@@table_name}
              SET #{@@connection.quote_column_name(@@data_column)}=#{@@connection.quote(marshaled_data)}
              WHERE #{@@connection.quote_column_name(@@session_id_column)}=#{@@connection.quote(session_id)}
            end_sql
          end
        end