PL / SQL，cx_Oracle：如何将用户定义的记录映射到python结果类型

Question

我正在尝试从此PL / SQL代码中获取python结果：

DECLARE
    TYPE MyRecord IS RECORD (
        state    NUMBER,
        text     VARCHAR2(32),
        dt       DATE
    );
    TYPE MyRecordTable IS TABLE OF MyRecord;
    recordTable MyRecordTable;
    result MyRecordTable;
FUNCTION peek RETURN MyRecordTable
IS
    recordTable MyRecordTable;
BEGIN
    recordTable := MyRecordTable();
    recordTable.extend;
    recordTable(recordTable.last).state := 4711;
    recordTable(recordTable.last).text := 'Test';
    RETURN recordTable;
END;
BEGIN
    :result := peek;
END;

我不能使用行类型游标，因为在我的实际PL / SQL代码中，有函数调用，我希望将结果放入这样的用户记录表中。那可能吗？ 我的Python代码如下所示：

dsn = cx_Oracle.makedsn(server, port, sid)
conn = cx_Oracle.connect(user, pw, dsn)
# Maybe there's a way using an output type handler?
conn.outputtypehandler = output_type_handler
cursor = conn.cursor()
result = cursor.var(cx_Oracle.OBJECT)
cursor.execute(PLSQL, result = result)
# This would be nice, if it worked:
#result = cursor.fetchall()
cursor.close()
conn.close()