Filter an LOV depending on a value selected in another LOV

Question

Hi,
I have two LOVs.
1. Job
query:
select
distinct
pj.job_id,
pjd.segment1 job_code,
pjd.segment2 job_title
from
per_jobs pj,
per_job_definitions pjd,
per_valid_grades pvg
where pj.job_definition_id = pjd.job_definition_id
and pj.job_id = pvg.job_id(+)
2. Grade
Query:
select
distinct
pg.name grade_name,
pg.grade_id,
'Yes' valid_for_job
from
per_valid_grades pvg,
per_grades pg
where pvg.grade_id = pg.grade_id
and pvg.job_id = NVL(:1,pvg.job_id)
union all
select
distinct
pg.name grade_name,
pg.grade_id,
'No' valid_for_grade
from
per_grades pg
where not exists (select pvg.job_id
from
per_valid_grades pvg
where pg.grade_id = pvg.grade_id
and pvg.job_id = NVL(:2,pvg.job_id))
When ever i select different value from JOB LOV, corrosponding JobID have to be passed to Grade LOV.
I though of passing jobid as lovmap criteria for Grade but if select jobid in my Grade LOV Query it don't give me the required records.
Can some one please help me fixing this.
Thanks a lot
Pavan

Answer 1

Thanks Ratheesh for your response. I got the solution now.
I have given the Query which i used for my second LOV at the beginning of this ticket.
What i did was, i used putSessionValue() and getSessionValue() methods to pass the jobid from base page where the values from first LOV is returned and passed it to a new controller created for second LOV. I used the below code both in my PR and PFR.
String jId = (String)pageContext.getSessionValue("paramJobId");
System.out.println("job Id in PR: "+jId);
EmployeeLovAMImpl am = (EmployeeLovAMImpl)pageContext.getApplicationModule(webBean);
GradeLovVOImpl vo = (GradeLovVOImpl)am.getGradeLovVO1();
vo.setWhereClause(null);
vo.setWhereClauseParams(null);
vo.setWhereClauseParam(0,new oracle.jbo.domain.Number(Integer.parseInt(jId)));
vo.setWhereClauseParam(1,new oracle.jbo.domain.Number(Integer.parseInt(jId)));
System.out.println("query after in PR: "+vo.getQuery());
vo.executeQuery();
Thanks you once again for your response.
Pavan