############################################################################## # # Copyright (c) 2002 Nexedi SARL and Contributors. All Rights Reserved. # Sebastien Robin <seb@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.CMFCore.utils import UniqueObject from AccessControl import ClassSecurityInfo from Globals import InitializeClass, DTMLFile, PersistentMapping from Products.ERP5Type.Document.Folder import Folder from Products.ERP5Type import Permissions from Products.ERP5 import _dtmldir import threading from zLOG import LOG class IdTool(UniqueObject, Folder): """ This tools handles the generation of IDs. """ id = 'portal_ids' meta_type = 'ERP5 Id Tool' portal_type = 'Id Tool' allowed_types = ( 'ERP5 Order Rule', 'ERP5 Transformation Rule',) # Declarative Security security = ClassSecurityInfo() # # ZMI methods # manage_options = ( ( { 'label' : 'Overview' , 'action' : 'manage_overview' } , ) + Folder.manage_options ) security.declareProtected( Permissions.ManagePortal, 'manage_overview' ) manage_overview = DTMLFile( 'explainIdTool', _dtmldir ) # Filter content (ZMI)) def __init__(self): return Folder.__init__(self, IdTool.id) # Filter content (ZMI)) def generateNewId(self, id_group=None, default=None, method=None): """ Generate a new Id """ if not hasattr(self,'dict_ids'): self.dict_ids = PersistentMapping() new_id = None if id_group is not None and id_group!='None': # Getting the last id last_id = None l = threading.Lock() l.acquire() try: last_id = self.dict_ids.get(id_group, default or 0) # Now generate a new id if method is not None: new_id = method(last_id) else: new_id = last_id + 1 # Store the new value self.dict_ids[id_group] = new_id finally: l.release() return new_id InitializeClass(IdTool)