from functools import partial

from query import run_query


class QueryResolver(dict):
    def __getitem__(self, key):
        if key.lower().startswith('select_') and key not in self:
            self[key] = partial(run_query, key)
        return super().__getitem__(key)


class QueryProvider(type):
    @classmethod
    def __prepare__(cls, name, bases):
        return QueryResolver()