add EmploymentContract class. This is a draft and will be improved

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@26742 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5/Document/EmploymentContract.py

+##############################################################################
+#
+# Copyright (c) 2009 Nexedi SA and Contributors. All Rights Reserved.
+#                    Fabien Morin <fabien@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 import Permissions, PropertySheet
+from Products.ERP5.Document.SubscriptionItem import SubscriptionItem
+from AccessControl import ClassSecurityInfo
+from Products.ERP5Type.DateUtils import addToDate, atTheEndOfPeriod
+from DateTime import DateTime
+
+from zLOG import LOG
+
+class EmploymentContract(SubscriptionItem):
+  """
+    Employment Contracts in ERP5 are intended to store work contract properties
+  """
+
+  meta_type = 'ERP5 Employment Contract'
+  portal_type = 'Employement Contract'
+
+  # Declarative security
+  security = ClassSecurityInfo()
+  security.declareObjectProtected(Permissions.AccessContentsInformation)
+
+  # Declarative properties
+  property_sheets = ( PropertySheet.Base
+                    , PropertySheet.XMLObject
+                    , PropertySheet.CategoryCore
+                    , PropertySheet.DublinCore
+                    , PropertySheet.Price
+                    , PropertySheet.Item
+                    , PropertySheet.Amount
+                    , PropertySheet.Reference
+                    , PropertySheet.ItemAggregation
+                    )
+
+  def assertMovementExists(self, applied_rule, start_date):
+    """
+      a movment exist if there is already a movement with the same 
+      start_date and stop_date
+    """
+    movement_id = 'movement_%s_%s' % (start_date.year(), start_date.month())
+    return len(applied_rule.searchFolder(id=movement_id))
+
+  def expandOpenOrderRule(self, applied_rule, force=0, **kw):
+    """
+      Expand tries to find all applicable supply path and all
+      applicable transformations. 
+    """
+    number_of_months_in_year = 12
+
+    # get career list that use this employment contract :
+    career_list = self.getAggregateRelatedValueList()
+    current_date = DateTime()
+    for career in career_list:
+      employee = career.getParentRelativeUrl()
+      employer = career.getSubordinationValue() is not None and career.getSubordinationValue().getRelativeUrl() or None
+      start_date = career.getStartDate()
+      stop_date = career.getStopDate()
+      for year_count in range(stop_date.year() - start_date.year() + 1):
+        for month_count in range(stop_date.month() - start_date.month()+1):
+          # for first movement, we use the start_date day
+          movement_start_date = addToDate(start_date, year=year_count, month=month_count)
+          if month_count != 0 or year_count != 0:
+            # if there is more than one movement in the period, start date is the begining of the month
+            movement_start_date = DateTime(movement_start_date.strftime('%Y/%m/01 00:00:00'))
+          movement_stop_date = atTheEndOfPeriod(movement_start_date, 'month')-1
+          # create only one year in the future
+          if movement_start_date > addToDate(current_date, year=1):
+            break
+          # if the stop_date is in not at the end of the month, use it
+          if stop_date < movement_stop_date:
+            movement_stop_date = stop_date
+          if not self.assertMovementExists(applied_rule, movement_start_date) and\
+              movement_stop_date.month() <= number_of_months_in_year:
+            property_dict = dict()
+
+            simulation_movement = applied_rule.newContent(
+                id = 'movement_%s_%s' % (movement_start_date.year(), movement_stop_date.month()),
+                start_date = movement_start_date,
+                stop_date = movement_stop_date,
+                source = employee,
+                destination = employer,
+                source_section = employee,
+                destination_section = employer,
+                quantity = self.getQuantity(),
+                quantity_unit = self.getQuantityUnit(),
+                resource = self.getResourceRelativeUrl()
+                )