update (DataMapper::Adapters::DataObjectsAdapter)

    # File lib/dm-core/adapters/data_objects_adapter.rb, line 114
          def update(attributes, collection)
            query = collection.query

            # TODO: if the query contains any links, a limit or an offset
            # use a subselect to get the rows to be updated

            properties  = []
            bind_values = []

            # make the order of the properties consistent
            query.model.properties(name).each do |property|
              next unless attributes.key?(property)
              properties  << property
              bind_values << attributes[property]
            end

            statement, conditions_bind_values = update_statement(properties, query)

            bind_values.concat(conditions_bind_values)

            execute(statement, *bind_values).to_i
          end