Define "rich partition" class

[dstandish]

Body

The identifier for a partition is the key. But we can (and probably should) create a partition class that would have more information.

E.g.

class Partition:
    partition_key: str
    partition_date: date

But it's also possible to imagine this being sort of extensible, e.g. for segment partitions, or to represent intervals.

It's not strictly necessary for MVP but, it would be nice.

Committer

• I acknowledge that I am a maintainer/committer of the Apache Airflow project.

[Lee-W]

class Partition:
    key: str

    def from_obj_to_key(...) -> str: ...
    def from_key_to_obj) -> Any: ...

something like this might also work