diff --git a/product/ERP5/Document/TransactionQuantityValueFeasabilityConstraint.py b/product/ERP5/Document/TransactionQuantityValueFeasabilityConstraint.py new file mode 100644 index 0000000000000000000000000000000000000000..4e4c5c6251d912008f020d8572fcf01928d169c3 --- /dev/null +++ b/product/ERP5/Document/TransactionQuantityValueFeasabilityConstraint.py @@ -0,0 +1,87 @@ +############################################################################## +# +# Copyright (c) 2006 Nexedi SARL and Contributors. All Rights Reserved. +# Romain Courteaud <romain@nexedi.com> +# +# 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. +# +############################################################################## + +from Products.ERP5Type.mixin.constraint import ConstraintMixin +from Products.ERP5Type import PropertySheet + +class TransactionQuantityValueFeasabilityConstraint(ConstraintMixin): + """ + Check if the quantity of the transaction is possible + for the source and the destination + + This is only relevant for ZODB Property Sheets (filesystem Property + Sheets rely on Products.ERP5.Constraint.TransactionQuantityValueFeasability + instead). + """ + meta_type = 'ERP5 Transaction Quantity Value Feasability Constraint' + portal_type = 'Transaction Quantity Value Feasability Constraint' + + property_sheets = (PropertySheet.SimpleItem, + PropertySheet.Predicate, + PropertySheet.Reference) + + def checkConsistency(self, object, fixit=0): + """ + Check if the quantity of the transaction is possible + for the source and the destination + """ + if not self.test(object): + return [] + + errors = [] + source_cell = object.getSourceValue() + destination_cell = object.getDestinationValue() + # Check for source and destination + for node, sign, node_title in ((source_cell, 1, 'source'), + (destination_cell, -1, 'destination')): + # As the quantity can change a few lines letter, + # we need to get it each time. + object_quantity = object.getQuantity() + quantity = object_quantity * sign + if node is not None: + balance = node.getCurrentBalance() + is_transaction_ok = 1 + # Check if balance and quantity have the same sign + if ((balance < 0) and (quantity < 0)): + if balance > quantity: + is_transaction_ok = 0 + elif ((balance >= 0) and (quantity >= 0)): + if balance < quantity: + is_transaction_ok = 0 + # Raise error + if not is_transaction_ok: + if fixit != 0: + object.setQuantity(balance) + else: + error_message = 'The quantity "%s" of the transaction is not ' \ + 'compatible with budget "%s" defined on the ' \ + '%s "%s".' % \ + (object_quantity, balance, node_title, node) + # Add error + errors.append(self._generateError(object, error_message)) + return errors