One to Many And Many to Many Association(jdev 11.4 ps3)

Hi All,
I was trying different types of ADF-BC implementations, I am stuck with following
1)     One to Many Association
a.     Order – OrderItem ( Join over two tables, One OrderVO should have List<OrderItemVO> orderItems
b.     Employee-Manager (Self Join on the Employee Table, One Employee should have List<Employee> subordinates [0 to *])
c.     Manager-Employee (Self Join on the Employee Table, One Employee should have List<Employee> managers [ 0 or 1] )
2)     Many to Many Association
Would be very helpful if you could provide any Blog published or Some sample implementation of the above.

Would be very helpful if you tell us which version of jdev you are looking at.
All this is described in the docs http://download.oracle.com/docs/cd/E14571_01/web.1111/b31974/bcintro.htm#sm0051 to start with and http://download.oracle.com/docs/cd/E14571_01/web.1111/b31974/bcentities.htm#sm0124 to follow up.
Timo

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From what you are describing, I would put any "support" information for a channel into a cluster. So you should have an array of clusters to contain your support data.
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Select with One-to-Many and Many-to-One without repeating

Hi
I have a customer who needs a report two sides left and right, but allowing for One-to-Many and Many-to-One relationships in the one report.
A little background:-
This has do do with listings on land and buildings.
One building can be built on a few pieces of land.
Similarly, there can be several buildings on one piece of land.
What is required is a listing of buildings on the left, land on the right, but without repeating the "single line entries" either left or right.
For example Building1 is on Land1 and Land2, and Building2 and Building3 are built on Land3.
We need:-
Building1 Land1
________Land2
Building2 Land3
Building3______
The ___ just used for spacing so you get the idea ;)
Essentially - a "break by" on columns on the left and right.
The Buildings and Land are in different tables, with a link table - one row for each link.
Any ideas?
Thanks
Mike

To jitu.jk - first, this is not in SQL*Plus - its a report in APEX - second, I see no way to break on the left and the right in the same select.
Maybe there is a way.
To Etbin
This is a very inovative solution - I've tried it out and the result is:-
BUILDING LAND
_____Land 4
_____Land 3
_____Land 5
Building 2 Land 4
Building 3 Land 1
_____Land 4
Building 4 Land 4
Building 5 Land 3
_____Land 4
(The underscores I put in for spacing - not perfect but you get the idea - hard whe you write the reply in a fixed space font and it's displayed in the forum in variable space font!! ;)
9 rows selected.
This is not quite the desired result - in your list of associations, we have Building1 associated with Land 3,4, and 5.
So for Building 1 we should have:-
Building 1 Land 3
________Land 4
________Land 5..........
But your result doesn't include Building 1 at all.
The other requirement is that no building or land is ever repeated - so I came up with the concept of "groups".
Starting with one building - I find all pieces of land that are associated - listing them on the right (without repeating the building.
I then find any other buildings asociated with any of the land records that the first building was associated with.
These are listed on the left - without repeating the land records on the right.
This group is given a unique identifier of the minimum association ID (my associations have ID's).
This all done, I use the unique ID as a break column ans summarise additional columns (area, value etc) below each group.
Because of the summaries - adding area and value etc, I can't have any building or land duplicated as I would then "double count" the area, value etc.
Maybe you method can be made to work with some tweaking.
Very clever indeed - forums need great answers like this - it keeps us going.
Thanks again
Mike

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sb92075 wrote:
approval_id (foreign key to the users.user_id) I am not clear on data element above.
I thought USERS were really AUTHORS. yes the authors are users , and the author id is exactly the same as user id.
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One to Many And Many to Many Association(jdev 11.4 ps3)

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