old_contents: ##############################################################################
  # The MIT License (MIT)
  #
  # Copyright (c) 2016 Hajime Nakagami
  #
  # Permission is hereby granted, free of charge, to any person obtaining a copy
  # of this software and associated documentation files (the "Software"), to deal
  # in the Software without restriction, including without limitation the rights
  # to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  # copies of the Software, and to permit persons to whom the Software is
  # furnished to do so, subject to the following conditions:
  #
  # The above copyright notice and this permission notice shall be included in all
  # copies or substantial portions of the Software.
  #
  # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  # IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  # FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  # AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  # LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  # SOFTWARE.
  ##############################################################################
  
  class Cursor:
      def __init__(self, connection):
          self.connection = connection
  
      def execute(self, query, params=[]):
          if query.strip().split()[0].upper() == 'SELECT':
              self.connection._query(query)
          else:
              self.connection._execute(query)
  
  
new_contents: ##############################################################################
  # The MIT License (MIT)
  #
  # Copyright (c) 2016 Hajime Nakagami
  #
  # Permission is hereby granted, free of charge, to any person obtaining a copy
  # of this software and associated documentation files (the "Software"), to deal
  # in the Software without restriction, including without limitation the rights
  # to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  # copies of the Software, and to permit persons to whom the Software is
  # furnished to do so, subject to the following conditions:
  #
  # The above copyright notice and this permission notice shall be included in all
  # copies or substantial portions of the Software.
  #
  # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  # IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  # FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  # AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  # LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  # SOFTWARE.
  ##############################################################################
  from drda import NotSupportedError
  
  class Cursor:
      def __init__(self, connection):
          self.connection = connection
          self.description = []
          self._rows = collections.deque()
          self._rowcount = 0
          self.arraysize = 1
          self.query = None
  
      def __enter__(self):
          return self
  
      def __exit__(self, exc, value, traceback):
          self.close()
  
      def callproc(self, procname, args=()):
          raise NotSupportedError()
  
      def nextset(self, procname, args=()):
          raise NotSupportedError()
  
      def setinputsizes(sizes):
          pass
  
      def setoutputsize(size, column=None):
          pass
  
      def execute(self, query, params=[]):
          if query.strip().split()[0].upper() == 'SELECT':
              self.connection._query(query)
          else:
              self.connection._execute(query)
  
  
subject: add cursor methods