def __init__(self, backend, upgrade_lock):
     self._backend = backend
     self._upgrade_lock = upgrade_lock
     self._engine = backend.engine
     self._metadata = sa.MetaData()
     self._tables = tables.fetch(self._metadata)
     self._converter = _Alchemist(self._tables)
Esempio n. 2
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 def __init__(self, backend, upgrade_lock):
     self._backend = backend
     self._upgrade_lock = upgrade_lock
     self._engine = backend.engine
     self._metadata = sa.MetaData()
     self._tables = tables.fetch(self._metadata)
     self._converter = _Alchemist(self._tables)
Esempio n. 3
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 def __init__(self, backend):
     self._backend = backend
     self._engine = backend.engine
     self._metadata = sa.MetaData()
     self._tables = tables.fetch(self._metadata)
     self._converter = Alchemist(self._tables)