Tree using APEX 2.2

Question

Hi
I have created a tree using APEX 2.2 and the wizard provided. The select for my tree is:
select "NODE_PRIMARY_KEY" id,
"NODE_FOREIGN_KEY" pid,
CASE
WHEN NODE_PRIMARY_KEY = :P6_SELECTED_PK THEN
'<span style="color:white;background-color:#0000CD;">'|| NODE_LABEL||'</span>'
ELSE
NODE_LABEL
END AS NAME,
'f?p=&APP_ID.:6:&SESSION.::NO::P6_SELECTED_PK:'||"NODE_PRIMARY_KEY" link,
NULL a1,
null a2
from "ADFY"."RRD_TREE_HIERARCHY"
ORDER BY 1
The above also highlights the current selected node. With a small data set the tree worked fine. Now that I have 'proper' data the tree's performance is not acceptable. I think the problem is due to the tree refreshing itself each time a node is selected. Is there anything that I can implement to stop this or to improve the performance of the tree?
I have tried the 'Tree with AJAX' example but couldn't really get it to work.
Thanks
Paul

Answer 1

Hi PARS,
Try the below query, I tried to run your query in SQL command and got the same error. I corrected your query, now its running in SQL Command,
select case when connect_by_isleaf = 1 then 0
                                              when level = 1             then 1
                                           else                           -1end as status,
level,
      apex_item.checkbox(1,empno,'')||ename as title,
       NULL as icon,
       EMPNO as value,
       null as tooltip,
       NULL as link
from "EMP"
start with "MGR" is null
connect by prior "EMPNO" = "MGR"
order siblings by "ENAME"
Hope It will work...I too referred that link you shared for this. But I am not sure we can use checkbox in tree report. Because we don't have any option to change the column 'display as' like 'standard report column'. then only it will show like checkbox else it will show the code like '<input type="checkbox" name="f01" value="7839" />KING'.
Thanks
Lakshmi