GlobalFactory.py

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#!/usr/bin/env python
# -*- coding: euc-jp -*-
 
 
 
 
import OpenRTM_aist
 
 
class Factory:
 
  FACTORY_OK     = 0
  FACTORY_ERROR  = 1
  ALREADY_EXISTS = 2
  NOT_FOUND      = 3
  INVALID_ARG    = 4
  UNKNOWN_ERROR  = 5
 
 
  def __init__(self):
    self._creators = {}
 
 
  
  def hasFactory(self, id):
    if id not in self._creators:
      return False
    return True
 
 
  
  def getIdentifiers(self):
    idlist = []
 
    for id in list(self._creators.keys()):
      idlist.append(id)
    idlist.sort()
    return idlist
 
 
  
  def addFactory(self, id, creator, destructor):
    if not creator:
      return self.INVALID_ARG
 
    if id in self._creators:
      return self.ALREADY_EXISTS
    
    self._creators[id] = creator
    return self.FACTORY_OK
 
 
  
  def removeFactory(self, id):
    if id not in self._creators:
      return self.NOT_FOUND
 
    del self._creators[id]
    return self.FACTORY_OK
 
 
  
  def createObject(self, id):
    if id not in self._creators:
      print("Factory.createObject return None id: ", id)
      return None
    return self._creators[id]()
 
 
  
  def deleteObject(self, obj, id=None):
    if id:
      if id not in self._creators:
        return
 
    del obj
    return
 
    
gfactory = None
 
class GlobalFactory(Factory):
  def __init__(self):
    Factory.__init__(self)
    pass
 
 
  def instance():
    global gfactory
    
    if gfactory is None:
      gfactory = GlobalFactory()
 
    return gfactory
 
  instance = staticmethod(instance)
 
 
  def __del__(self):
    pass