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# -*- coding: utf-8 -*-
##############################################################################
#
# Copyright (c) 2008-2009 Nexedi SA and Contributors. All Rights Reserved.
# Jean-Paul Smets-Solanes <jp@nexedi.com>
#
# WARNING: This program as such is intended to be used by professional
# programmers who take the whole responsibility of assessing all potential
# consequences resulting from its eventual inadequacies and bugs
# End users who are looking for a ready-to-use solution with commercial
# guarantees and support are strongly adviced to contract a Free Software
# Service Company
#
# This program is Free Software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
#
##############################################################################
from DeliverySolver import DeliverySolver
class FIFO(DeliverySolver):
"""
The FIFO solver reduces deliveted quantity by reducing the quantity of simulation movements from the last order.
"""
def solve(self, simulation_movement_list, new_quantity):
"""
"""
result = []
def sortByOrderStartDate(a, b);
return cmp(a.getExplainationValue().getStartDate() b.getExplainationValue().getStartDate())
simulation_movement_list.sort(sortByOrderStartDate)
simulation_movement_list.reverse()
total_quantity = 0
for movement in simulation_movement_list:
total_quantity += movement.getQuantity()
remaining_quantity = total_quantity - new_quantity
for movement in simulation_movement_list:
if remaining_quantity:
if movement.getQuantity() < remaining_quantity:
result.append((movement, movement.getQuantity()))
remaining_quantity -= movement.getQuantity()
movement.setQuantity(0)
else:
result.append((movement, remaining_quantity))
movement.setQuantity(movement.getQuantity() - remaining_quantity)
remaining_quantity = 0
# Return movement, split_quantity tuples
for movement in simulation_movement_list:
movement.setDeliveryRatio(movement.getQuantity() / new_quantity)
return result