Source code for loom.core.model.enums

from __future__ import annotations

from enum import StrEnum



[docs]
class OnDelete(StrEnum):
    CASCADE = "CASCADE"
    SET_NULL = "SET NULL"
    RESTRICT = "RESTRICT"
    NO_ACTION = "NO ACTION"




[docs]
class OnUpdate(StrEnum):
    CASCADE = "CASCADE"
    SET_NULL = "SET NULL"
    RESTRICT = "RESTRICT"
    NO_ACTION = "NO ACTION"




[docs]
class Cardinality(StrEnum):
    ONE_TO_ONE = "one_to_one"
    ONE_TO_MANY = "one_to_many"
    MANY_TO_ONE = "many_to_one"
    MANY_TO_MANY = "many_to_many"




[docs]
class ServerDefault(StrEnum):
    NOW = "now"
    UUID4 = "uuid4"




[docs]
class ServerOnUpdate(StrEnum):
    NOW = "now"


[docs]
    @classmethod
    def is_now(cls, value: ServerOnUpdate | str | None) -> bool:
        """Return whether ``value`` requests the server clock, as enum or string.

        Args:
            value: A ``server_onupdate`` declaration; the string form is
                matched case-insensitively.

        Returns:
            ``True`` for ``ServerOnUpdate.NOW`` or ``"now"`` in any case.
        """
        return isinstance(value, str) and value.strip().lower() == cls.NOW.value