缺少cx_Oracle.OBJECT中的值

时间:2017-06-02 18:23:33

标签: python oracle cx-oracle object-type instantclient

我在oracle(lro_dummy)中有一个自定义类型。我也有一个程序。我看起来像这样:

procedure dummyLro
(
    i_dummy         in  lro_dummy,
    o_dummy         out lro_dummy
)is
begin
    o_dummy := lro_dummy('asdf');
end dummyLro;

现在我想用python和cx_Oracle调用这个过程。这看起来像这样:

def test(db_con):
  cur = db_con.cursor()
  try:
    procedure_params = {}
    procedure_params["i_dummy"] = cur.var(cx_Oracle.OBJECT, typename="lro_dummy")
    procedure_params["o_dummy"] = cur.var(cx_Oracle.OBJECT, typename="lro_dummy")

    cur.callproc("test.dummyLro", [], procedure_params)

之后o_dummy有一个值,因为

str(procedures_params["o_dummy"])

返回

'<cx_Oracle.OBJECT with value <cx_Oracle.Object ???.LRO_DUMMY at 0x10492c9c0>>'

但我无法访问我的属性。该属性列在

procedure_params["o_dummy"].type.attributes

但是我找不到

中的值
procedure_params["o_dummy"]

我错了什么?

我正在使用Python 3.6cx_Oracle 5.3InstantClient 11.2Oracle-Server 11

1 个答案:

答案 0 :(得分:0)

我有同样的问题。根据“文档”(http://www.oracle.com/technetwork/articles/prez-stored-proc-084100.html),它应该按照你的方式工作,但它对我不起作用。据我所见,传入proc的params没有变异。而是返回新对象。这对我有用:

i_dummy = cursor.var(cx_Oracle.OBJECT, typename='lro_dummy')
o_dummy = cursor.var(cx_Oracle.OBJECT, typename='lro_dummy')
[something, returned_o_dummy] = cur.callproc("test.dummyLro", [], [i_dummy, o_dummy])
print(returned_o_dummy.DUMMY)