'Initialize an EntityConfigDict.'

def __init__(self, exact=None, domain=None, glob=None):

    self._cache = {}
    self._exact = exact
    self._domain = domain
    if (glob is None):
        compiled = None
    else:
        compiled = OrderedDict()
        for (key, value) in glob.items():
            compiled[re.compile(fnmatch.translate(key))] = value
    self._glob = compiled
