janware/jw-python
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db.schema: Add location definition to API

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Signed-off-by: Jan Lindemann <jan@janware.com>
This commit is contained in:
Jan Lindemann 2025-01-30 14:26:43 +01:00
commit 9cfcc1bd68
2 changed files with 57 additions and 0 deletions
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11
tools/python/jwutils/db/schema/Schema.py
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@ -16,6 +16,7 @@ class Schema(abc.ABC): # export
def __init__(self) -> None:
self.___tables: Optional[List[Table]] = None
self.__foreign_keys: Optional[List[CompositeForeignKey]] = None
self.__access_defining_columns: Optional[List[str]] = None
@property
def __tables(self):
@ -44,6 +45,10 @@ class Schema(abc.ABC): # export
def _foreign_keys(self) -> List[CompositeForeignKey]:
pass
@abc.abstractmethod
def _access_defining_columns(self):
pass
# ------ API to be called
@property
@ -54,6 +59,12 @@ class Schema(abc.ABC): # export
def tables(self) -> Iterable[Table]:
return self.__tables.values()
@property
def access_defining_columns(self):
if self.__access_defining_columns is None:
self.__access_defining_columns = self._access_defining_columns()
return self.__access_defining_columns
@property
def foreign_key_constraints(self) -> List[CompositeForeignKey]:
if self.__foreign_keys is None: