##// END OF EJS Templates
api: use consistent way to extract users, repos, repo groups and user groups by id or name....
api: use consistent way to extract users, repos, repo groups and user groups by id or name. - makes usage of Number vs String to differenciate if we pick objec ID or it's name this will allow easy fetching of objects by either id or it's name, including numeric string name - fixes #5230

File last commit:

r1:854a839a default
r1530:1efcb4ee default
Show More
keyedinstance.py
36 lines | 1.1 KiB | text/x-python | PythonLexer
#!/usr/bin/env python
# -*- coding: utf-8 -*-
class KeyedInstance(object):
"""A class whose instances have a unique identifier of some sort
No two instances with the same unique ID should exist - if we try to create
a second instance, the first should be returned.
"""
_instances = {}
def __new__(cls, *p, **k):
instances = cls._instances
clskey = str(cls)
if clskey not in instances:
instances[clskey] = {}
instances = instances[clskey]
key = cls._key(*p, **k)
if key not in instances:
instances[key] = super(KeyedInstance, cls).__new__(cls)
return instances[key]
@classmethod
def _key(cls, *p, **k):
"""Given a unique identifier, return a dictionary key
This should be overridden by child classes, to specify which parameters
should determine an object's uniqueness
"""
raise NotImplementedError()
@classmethod
def clear(cls):
# Allow cls.clear() as well as uniqueInstance.clear(cls)
if str(cls) in cls._instances:
del cls._instances[str(cls)]