Creating Tree Menu with each node referring to a different page

Question

Hi,
I've got a Tree with I would like to refer to a different page to each single leaf.
Tree is the following :
select "ID_MENU" id,
"MENU_UNDER" pid,
"MENU_NAME" name,
'f?p=&APP_ID.:&app_page_id.:&SESSION.::NO::FSP_AFTER_LOGIN_URL:'||"ID_MENU" link,
null a1,
null a2
from "#OWNER#"."MENU"
How is possible to refer each single page, stored into the MENU table (wihich contain the menu) to a different node leaf ?
MENU Table is the following :
create table MENU
ID_MENU NUMBER not null,
MENU_NAME VARCHAR2(500),
MENU_UNDER VARCHAR2(500),
PAGE_LINK VARCHAR2(500)
Thanks,
Ivan

Answer 1

Is your MENU table a hierarchical table or just flat. It looks flat, because it doesn't seem to have a foreign key to it's parent menu. Do you just have two levels?
BTW, you normally would use PAGE_LINK in your link column.
Why not create a hierarchical table as follows:
create table MENU
ID_MENU NUMBER not null,
MENU_NAME VARCHAR2(500),
PARENT_ID_MENU NUMBER,
PAGE_ID NUMBER
);PARENT_ID_MENU would contain the ID_MENU of the parent menu, for the root menus it would be NULL.
Then your query would look as follow:
select ID_MENU        AS id,
     , PARENT_ID_MENU AS pid
     , MENU_NAME      AS name
     , CASE
         WHEN PAGE_ID IS NOT NULL THEN 'f?p=&APP_ID.:'||PAGE_ID||':'||:SESSION
         ELSE NULL
       END            AS link
     , null           AS a1
     , null           AS a2
from "#OWNER#".MENUPatrick
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