def fetch(self):
        data = self.dbconn.fetchall(self.query)
        self.dbconn.rollback()
        return [self.cls(**dict(row)) for row in data]
Fetch all objects from the catalogs using the class :attr:`query`
dataset/ETHPy150Open perseas/Pyrseas/pyrseas/dbobject/__init__.py/DbObjectDict.fetch