Dynamic view object and LOV

Question

Here's the problem I've encountered. I need to create an input LOV, where list is taken from dynamically created view object (it is created using createViewObjectFromQueryStmt; query may be different, but it always has 3 columns with fixed names - that's the rule). The problem is quite similar to that described here: {thread:id=935344}
I've tried to create a "stub" LOV with a query like
select 1 ID, 1 RESULTVALUE, 'dynamic' SNAME from dual(all the queries will have 3 columns with names ID, RESULTVALUE and SNAME) and then changing it's query by using something like this
    public void recreateDynamicViewObject(String newSQL) {
        ApplicationModule am = ADFUtils.getApplicationModuleForDataControl(DATACONTROL);               
        if (am.findViewObject(DYNAMIC_VO_NAME) != null)
            am.findViewObject(DYNAMIC_VO_NAME).remove();       
        ViewObject vo = am.createViewObjectFromQueryStmt(DYNAMIC_VO_NAME,newSQL);
        vo.executeQuery();               
    }but it didn't work (with the same results as it was mentioned in the post I've given reference to - the VO changes, but the new rows are not displayed).
My question is almost the same: is it possible to use a dynamically created VO in LOV? The option of creating a VO for each query is unacceptable in my case, because these queries in fact are created by end users, and there can be any number of these queries.
In case it is important - I use JDeveloper 11.1.1.2.0.

Answer 1

I am also looking for a similar solution.
Actually it works partially.
I have a created a permanent View Object with a dummy query and in the run time I am replacing the View Object query in the ProcessRequest in CO.
My problem is when you click on the LOV it works fine with the changed query results, but when I clicked again on the LOV, it shows the the dummy query results which I gave it in the VO.
Here is my AM method which is called in the CO.
BOSS_Parameter1_LOV_VOImpl parameterVO =
getBOSS_Parameter1_LOV_VO1();
parameterVO.clearCache();
parameterVO.executeQuery();
System.out.println(parameterVO.getQuery());
parameterVO.setWhereClause(null);
parameterVO.setWhereClauseParams(null);
parameterVO.setQuery(lovQuery); // this the dynamic query
parameterVO.setWhereClause(null);
System.out.println(parameterVO.getQuery());
Even though its showing the changed query in the getQuery, the LOV is not refreshed.
I am also changing the Query of the View Object in the ProcessFormRequest
if (pageContext.isLovEvent() || pageContext.getParameter(EVENT_PARAM).equals("lovPrepare")) {
call the above mentioned method in the AM.
But, still it doesn't work.
Any tips will be appreciated.
Thanks,