db.py 文件源码

def _loadJson(cls, filename):
        jsonFh = open(filename, "r")
        jsonDb = json.load(jsonFh)
        jsonFh.close()
        db = cls()
        backRefTables = []
        for tableName, b64PickledTable in jsonDb.iteritems():
            pickledTable = base64.b64decode(b64PickledTable)
            table = pickle.loads(pickledTable)
            if tableName == "_backRefTables":
                backRefTables = table
                continue
            setattr(db, tableName, table)

        for tableName in backRefTables:
            getattr(db, tableName).setDatabase(db)

        for tableName, table in db.__dict__.iteritems():
            table = cls._loadJsonTableTransform(db, tableName, table)
            setattr(db, tableName, table)

        return db