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WIP:Refactoring:Restriction moved from model #19

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Apr 8, 2024
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14 changes: 14 additions & 0 deletions owlapy/has.py
Original file line number Diff line number Diff line change
Expand Up @@ -61,3 +61,17 @@ def get_filler(self) -> _T:
the value
"""
pass


class HasCardinality(metaclass=ABCMeta):
"""An interface to objects that have a cardinality."""
__slots__ = ()

@abstractmethod
def get_cardinality(self) -> int:
"""Gets the cardinality of a restriction.

Returns:
The cardinality. A non-negative integer.
"""
pass
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