Using JDBC ? Style Parameters and Oracle Style :param on view objects

Question

can i use :0 style on predicate side of a sql statement
example
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select nvl(:0, null) from dual
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After some test for me only work using ? style.
The ? style cause me problem on my already creaded master details view objects
Any help on this
Best Regards

Answer 1

Frank tnx for repply
My problems is , when i use parameters on functions like decode
===================================================
SELECT decode(:0,'VALOR1', 'VALOR1','SINVALOR') VALOR,
       Dept.DEPTNO,
FROM DEPT Dept
and
SELECT decode(:0,'VALOR1', 'VALOR1','SINVALOR') VALOR,
       Emp.EMPNO,
       Emp.DEPTNO
FROM EMP Emp===================================================
on a view object that is detail view object (departments vo -> employees vo)
and have a view link EmpsByDeptViewLink
the parameter of my view link SQL dont work (in my case :1) <-param of SQL view link
In my vo :0 is my first parameter, :1 of my view link is my second parameter,
but when i access my EmpsByDept.do ADF page and set
    ViewObject vo = getDeptView1();
    vo.setWhereClause("DEPTNO = :0");
    vo.setWhereClauseParam(0,"VALOR2");
    vo.setWhereClauseParam(1,"10");
    vo.executeQuery();
    ViewObject vo1 = getEmpView1();
    vo1.setWhereClause("EMPNO = :1");
    vo1.setWhereClauseParam(0,"VALOR1");
    vo1.executeQuery();its doesnot work.
I need to do some aditional steps to parameter of my view link SQL work?
Also i has uploaded a TestCase on http://www.geocities.com/mroseroc/ScottADFTest.zip
Errors from my Jdeveloper Debug level are:
=======================================================
SELECT * FROM (SELECT decode(:0,'VALOR1', 'VALOR1','SINVALOR') VALOR,
       Emp.EMPNO,
       Emp.ENAME,
       Emp.JOB,
       Emp.MGR,
       Emp.HIREDATE,
       Emp.SAL,
       Emp.COMM,
       Emp.DEPTNO
FROM EMP Emp) QRSLT  WHERE (EMPNO = :1)
06/04/26 21:55:03 [915] Bind params for ViewObject: EmpView1
06/04/26 21:55:03 [916] Binding param 1: VALOR1
06/04/26 21:55:03 [917] ViewObject: EmpView1 close single-use prepared tatements
06/04/26 21:55:03 [918] QueryCollection.executeQuery failed...
06/04/26 21:55:03 [919] java.sql.SQLException: Missing parameter IN o OUT on index:: 2=======================================================
(EMPNO = :1) <- this value is never passed