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33 lines
830 B
Python
33 lines
830 B
Python
# -*- coding: utf-8 -*-
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from typing import Optional, Any
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from .Column import Column
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from .ColumnSet import ColumnSet
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class SingleForeignKey:
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def __init__(self, child_col: Column, parent_col: Column):
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self.__child_col = child_col
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self.__parent_col = parent_col
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self.__iterable = (self.__child_col, self.__parent_col)
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def __len__(self):
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return 2
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def __iter__(self):
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yield from self.__iterable
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def __repr__(self):
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return f'{self.__child_col.table.name}.{self.__child_col.name} -> {self.__parent_col.table.name}.{self.__parent_col.name}'
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def __getitem__(self, index):
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return self.__iterable[index]
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@property
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def child_column(self):
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return self.__child_col
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@property
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def parent_column(self):
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return self.__parent_col
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