InventoryCell.py 4.02 KB
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##############################################################################
#
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# Copyright (c) 2002-2005 Nexedi SARL and Contributors. All Rights Reserved.
#                         Jean-Paul Smets-Solanes <jp@nexedi.com>
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#
# WARNING: This program as such is intended to be used by professional
# programmers who take the whole responsability 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
# garantees 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.
#
##############################################################################

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from Acquisition import aq_base
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from AccessControl import ClassSecurityInfo

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from Products.ERP5Type import Permissions, PropertySheet
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from Products.ERP5Type.Accessor.Constant import PropertyGetter as ConstantGetter
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from Products.ERP5.Document.DeliveryCell import DeliveryCell

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class InventoryCell(DeliveryCell):
    """
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      An InventoryCell allows to define specific inventory
      for each variation of a resource in an inventory line.
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    """

    meta_type = 'ERP5 Inventory Cell'
    portal_type = 'Inventory Cell'
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    add_permission = Permissions.AddPortalContent
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    isInventoryMovement = ConstantGetter('isInventoryMovement', value=True)
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    # Declarative security
    security = ClassSecurityInfo()
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    security.declareObjectProtected(Permissions.AccessContentsInformation)
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    # Declarative properties
    property_sheets = ( PropertySheet.Base
                      , PropertySheet.CategoryCore
                      , PropertySheet.Amount
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                      , PropertySheet.InventoryMovement
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                      , PropertySheet.Task
                      , PropertySheet.Movement
                      , PropertySheet.Price
                      , PropertySheet.Predicate
                      , PropertySheet.MappedValue
                      , PropertySheet.ItemAggregation
                      )
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    security.declareProtected(Permissions.AccessContentsInformation, 'getTotalInventory')
    def getTotalInventory(self):
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      """
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        Returns the inventory if no cell or the total inventory if cells
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      """
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      if not self.hasCellContent():
        return self.getInventory()
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      else:
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        # Use MySQL
        aggregate = self.InventoryLine_zGetTotal()[0]
        return aggregate.total_inventory or 0.0
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    security.declareProtected(Permissions.AccessContentsInformation, 'getQuantity')
    def getQuantity(self):
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      """
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        Computes a quantity which allows to reach inventory
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      """
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      if not self.hasCellContent():
        # First check if quantity already exists
        quantity = self._baseGetQuantity()
        if quantity not in (0.0, 0, None):
          return quantity
        # Make sure inventory is defined somewhere (here or parent)
        if getattr(aq_base(self), 'inventory', None) is None:
          return 0.0 # No inventory defined, so no quantity
        return self.getInventory()
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      else:
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        return None
      
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    # Inventory cataloging
    security.declareProtected(Permissions.AccessContentsInformation, 'getConvertedInventory')
    def getConvertedInventory(self):
      """
        provides a default inventory value - None since
        no inventory was defined.
      """
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      return self.getInventory() # XXX quantity unit is missing