292     q = db.Query(self._model)

   292     format_eq = '%(key)s = :%(num)d'

   293 

   293     format_in = '%(key)s IN (%(values)s)'

   294     for key, values in filter.iteritems():

   294 

   295       for value in (values if isinstance(values, list) else [values]):

   295     n = 1

   296         q.filter(key, value)

   296     conditionals = []

   297 

   297     args = []

   298 

   299     for key, value in filter.iteritems():

   300       if isinstance(value, list):

   301         count = len(value)

   302         args.extend(value)

   303         values = ', '.join([':%d' % i for i in range(n, n + count)])

   304         sub = format_in % {'key': key, 'values': values}

   305         n = n + count

   306       else:

   307         sub = format_eq % {'key': key, 'num': n}

   308         args.append(value)

   309         n = n + 1

   310       conditionals.append(sub)

   311 

   312     joined_pairs = ' AND '.join(conditionals)

   313     condition = 'WHERE ' + joined_pairs

   314 

   315     q = self._model.gql(condition, *args)