如何执行使用NHibernate返回sys_refcursor的Oracle函数？

Question

This is the function:

FUNCTION GET_ALL(P_USER_ID IN VARCHAR2) RETURN SYS_REFCURSOR IS
   C SYS_REFCURSOR;
BEGIN
    OPEN C
    FOR 'SELECT * FROM XYZ WHERE USER_ID = :P_USER_ID'
    USING P_USER_ID;

    RETURN C;
END;

I'm trying to call this function using NHibernate, like this:

Session
    .CreateSQLQuery("BEGIN ? = PKG.GET_ALL(:P_USER_ID); END;")
    .SetString("P_USER_ID", "SOMEONE")
    .List<XYZ>();

Any code, tips or smoke signs are welcome.

PS: I'm using NHibernate 3.3.0.GA

Answer 1

From the official docs :

For Oracle the following rules apply:

A function must return a result set. The first parameter of a procedure must be an OUT that returns a result set. This is done by using a SYS_REFCURSOR type in Oracle 9 or 10. In Oracle you need to define a REF CURSOR type, see Oracle literature.

There are working tests with full mapping and stored procedure code at https://github.com/nhibernate/nhibernate-core/tree/master/src/NHibernate.Test/SqlTest/Custom/Oracle