indico/MaKaC/webinterface/webFactoryRegistry.py

   1 # -*- coding: utf-8 -*-
   2 ##
   3 ##
   4 ## This file is part of CDS Indico.
   5 ## Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007 CERN.
   6 ##
   7 ## CDS Indico is free software; you can redistribute it and/or
   8 ## modify it under the terms of the GNU General Public License as
   9 ## published by the Free Software Foundation; either version 2 of the
  10 ## License, or (at your option) any later version.
  11 ##
  12 ## CDS Indico is distributed in the hope that it will be useful, but
  13 ## WITHOUT ANY WARRANTY; without even the implied warranty of
  14 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15 ## General Public License for more details.
  16 ##
  17 ## You should have received a copy of the GNU General Public License
  18 ## along with CDS Indico; if not, write to the Free Software Foundation, Inc.,
  19 ## 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
  20
  21 from BTrees import OOBTree
  22 import MaKaC.webinterface.simple_event as simple_event
  23 import MaKaC.webinterface.meeting as meeting
  24 from MaKaC.common import DBMgr
  25
  26
  27 class WebFactoryRegistry:
  28     """
  29     """
  30
  31     def __init__( self ):
  32         self._initFactoryRegistry()
  33         self._confRegistry = None
  34
  35     def _initFactoryRegistry( self ):
  36         self._factoryRegistry = {}
  37         self._factoryRegistry[ simple_event.WebFactory.getId() ] = simple_event.WebFactory
  38         self._factoryRegistry[ meeting.WebFactory.getId() ] = meeting.WebFactory
  39
  40     def _getConfRegistry( self ):
  41         if not self._confRegistry:
  42             db_root = DBMgr.getInstance().getDBConnection().root()
  43             if db_root.has_key( "webfactoryregistry" ):
  44                 self._confRegistry = db_root["webfactoryregistry"]
  45             else:
  46                 self._confRegistry = OOBTree.OOBTree()
  47                 db_root["webfactoryregistry"] = self._confRegistry
  48         return self._confRegistry
  49
  50     def _getModuleFactory( self, name ):
  51         comp = __import__( name )
  52         for compName in name.split(".")[1:]:
  53             comp = getattr( comp, compName )
  54         return getattr( comp, "WebFactory" )
  55
  56     def registerFactory( self, conference, factory ):
  57         """Associates a given conference with a certain webfactory
  58         """
  59         self._getConfRegistry()[ conference.getId() ] = factory
  60
  61     def getFactory( self, conference ):
  62         """Gives back the webfactory associated with a given conference or None
  63             if no association exists
  64         """
  65         try:
  66             if self._getConfRegistry().has_key( conference.getId() ):
  67                 return self._getConfRegistry()[ conference.getId() ]
  68         except:
  69             pass
  70         return None
  71
  72     def getFactoryById( self, id):
  73         """Gives back the web factory class corresponding to the specified id
  74         """
  75         id = id.strip().lower()
  76         return self._factoryRegistry.get( id, None )
  77
  78     def getFactoryList( self ):
  79         """Returns a list containing all the factories in the registry
  80         """
  81         return self._factoryRegistry.values()