Migrate AttributeBlacklistedConstraint

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@45725 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5/Document/AttributeBlacklistedConstraint.py

+##############################################################################
+#
+# Copyright (c) 2002, 2009 Nexedi SA and Contributors. All Rights Reserved.
+#                   Nicolas Delaby <nicolas@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
+from Products.ERP5Type.Utils import createExpressionContext
+from Products.ERP5Type.Utils import evaluateExpressionFromString
+from Products.ERP5Type.Core.PropertyExistenceConstraint import \
+    PropertyExistenceConstraint
+
+class AttributeBlacklistedConstraint(PropertyExistenceConstraint):
+  """
+  This constraint class allows to check attribute non equality to a 
+  list of blacklisted value
+  """
+
+  property_sheets = PropertyExistenceConstraint.property_sheets + \
+                               (PropertySheet.AttributeBlacklistedConstraint,) 
+
+  _message_id_tuple = ('message_invalid_attribute_blacklisted',)
+
+  def _checkConsistency(self, obj, fixit=0):
+    """Check the object's consistency.
+      We will make sure that each non None constraint_definition is 
+      satisfied
+    """
+    error_list = PropertyExistenceConstraint._checkConsistency(
+                                                   self, obj, fixit=fixit)
+    blacklisted_list_expression = self.getBlacklistedList()
+    expression_context = createExpressionContext(obj)
+    blacklisted_list = evaluateExpressionFromString(expression_context,
+                                                    blacklisted_list_expression)
+    message_id = 'message_invalid_attribute_blacklisted'
+    for property_id in self.getConstraintPropertyList():
+
+      value = obj.getProperty(property_id)
+      if value in blacklisted_list:
+        mapping = dict(attribute_name=property_id)
+        # Generate error
+        error_list.append(self._generateError(obj, 
+                                              self._getMessage(message_id),
+                                              mapping=mapping)
+                         )
+    return error_list
+