text: # vim: set fileencoding=utf-8 :
  #
  # Copyright (c) 2012 Retresco GmbH
  # Copyright (c) 2011 Daniel Truemper <truemped at googlemail.com>
  #
  # Licensed under the Apache License, Version 2.0 (the "License");
  # you may not use this file except in compliance with the License.
  # You may obtain a copy of the License at
  #
  #   http://www.apache.org/licenses/LICENSE-2.0
  #
  # Unless required by applicable law or agreed to in writing, software
  # distributed under the License is distributed on an "AS IS" BASIS,
  # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  # See the License for the specific language governing permissions and
  # limitations under the License.
  #
  #
  from dopplr.basequery import BaseQuery
  
  
  class Paging(BaseQuery):
      """
      Query implementing search result paging. Paging is implemented `1` based,
      i.e. the first page is `1` not `0`!
      """
      def __init__(self, page, rows=10):
          self._page = page
          self._rows = rows
  
      def get_params(self):
          """
          Compute the `start` and `rows` parameter.
          """
          params = []
          params.append(('rows', str(self._rows)))
          if self._page > 1:
              params.append(('start', str((self._page - 1) * self._rows)))
  
          return params
  