Problem in Tree with in a table

Question

Hi Experts,
I have created a WDC which contains the tree with in a table.
I have created a table in the view and a Master column in it.
Initially i loaded the tree with some values in my WDDOINIT of my view.
I have also created the event handler for that Master column i.e., OnLoadChildren event handler.
I have written some code in it, so that this event handler method will be called when i try to expand a node in the table.
Unfortunately, the debugger is not getting in to that method, and that event is not being called when i Expand the tree node in the table.
Please suggest me so that i can complete the assignment.
Thanks in advance and for all the help given till now.

Answer 1

Hi
You can join a hierarchical query as you suggest; you can also use SYS_CONNECT_BY_PATH() to identify the subproduct. Here's the kind of query you need - I've used the HR sample data, but you should be able to transform this into products, subproducts etc
select subproduct.first_name, subproduct.last_name, part.job_id, sum(part.salary), count(distinct part.employee_id)
from employees subproduct
left join (
select level lev
     , sys_connect_by_path(last_name,'/') reportsto
     , sys_connect_by_path(to_char(employee_id,'fm0000'),'/') ancestors
     , substr(sys_connect_by_path(to_char(employee_id,'fm0000'),'/'),7,4) subprodid
     , emp.*
from employees emp
start with employee_id = 100 -- like identifying the product
connect by prior employee_id = manager_id
) part
on part.subprodid = to_char(subproduct.employee_id,'fm0000')
where subproduct.manager_id=100
group by subproduct.first_name, subproduct.last_name, part.job_idYou'll see I've used a fixed format connect_by_path (with 4 digits per level) which makes it easy to pull out the second level.
HTH
Regards Nigel