so_magic.data.backend.engine_specs

Complexity

Total Complexity

2

Size/Duplication

Total Lines	30
Duplicated Lines	0 %

Importance

Changes

0

2 Methods

Rating	Name	Duplication	Size	Complexity
A	EngineSpecifications.from_dict()	0	3	1
A	EngineSpecifications.__call__()	0	5	1

import attr

# from so_magic.data.interfaces import TabularRetriever, TabularIterator, TabularMutator
from so_magic.utils import SubclassRegistry


class EngineTabularRetriever(metaclass=SubclassRegistry): pass


class EngineTabularIterator(metaclass=SubclassRegistry): pass


class EngineTabularMutator(metaclass=SubclassRegistry): pass


@attr.s
class EngineSpecifications:
    name_abbreviation = attr.ib(init=True)
    name = attr.ib(init=True, default=attr.Factory(lambda self: self.name_abbreviation, takes_self=True))

    def __call__(self, *args, **kwargs):
        engine = args[0]
        engine.retriever = EngineTabularRetriever.subclasses[self.name_abbreviation]
        engine.iterator = EngineTabularIterator.subclasses[self.name_abbreviation]
        engine.mutator = EngineTabularMutator.subclasses[self.name_abbreviation]

    @classmethod
    def from_dict(cls, a_dict):
        return EngineSpecifications(a_dict['id'], a_dict.get('name', a_dict['id']))