Question

我试图扩展一个过程返回sys_refcursor时创建的游标。解决方案How to extend OracleCursor class from cx_Oracle适用于connection.cursor（），但不适用于sys_refcursor。

import cx_Oracle as cxo

class MyCursor(cxo.Cursor):
    def helloWorld(self):
        print "helloWorld"

class MyConnection(cxo.Connection):
    def cursor(self):
        return MyCursor(self)



if __name__ == '__main__':
    conStr = 'ants/<password>'
    db = MyConnection(conStr)
    c = db.cursor()
    c.execute("""
        create or replace procedure cx_test_cursor(
            val4 out sys_refcursor
        ) is
        begin
            open val4 for
                select 1 a from dual union all
                select 2 from dual;
        end;
    """)

    result = c.callproc('ants.cx_test_cursor', [c.var(cxo.CURSOR)])
    c.execute('drop procedure cx_test_cursor')
    print result
    result[0].helloWorld()

结果

[<cx_Oracle.Cursor on <__main__.MyConnection to user ants@local>>]
Traceback (most recent call last):
  File "cx_test2.py", line 32, in <module>
    result[0].helloWorld()
AttributeError: 'cx_Oracle.Cursor' object has no attribute 'helloWorld'

如何扩展此游标的任何想法？

Answer 1

只有cx_Oracle 6及更高版本才能实现这一点。

如何扩展cx_oracle sys_refcursor Curor类

1 个答案: