Updating a VO transcient variable.

Question

hi,
I have table1 and table2. table 2 contains the foreign key from table1. Now if a record exists in table 2 i want that row to be read only for the advanced table created on VO of table1.
Hence I added a transcient variable in the VO for this purpose.
Now my query is that:
If I use the iterator on table 1 to iterate through the records ( and check if the foreign record exists in table2) I cannot update the row attribute ( even if i do , i do not see the changes).
If i iterate through table 2 and use the API of getFirstFilteredRow on the VO of table 1, I do not get the results still ( as I guess none of the records are selected )
I am trying to check this in the initTableQuery of the AM ( as i want to disable the records as soon as the page loads , before the processcontroler completes)
Can someone tell me how to solve this issue?
thanks in advnce,
Regards,
Vishal

Answer 1

Hi Vishal,
You can take following two approaches to accomplish this task:
1. Iterate through first VO and inside loop check if foreign key exist in second VO, set attribute as False else True and base the readonly propert of the columns on this attribute.
2. inside your first VO query add one subquery to fetch count from second VO query(basically to find is there any key exists for this in second VO. Then put decode if it returns 0 then return false else return true.
Hope this will give you some idea, please check.
Regards,
Reetesh Sharma
Edited by: user12007870 on 07-Jul-2010 03:55