Resolving a 1:n Association to a single row

Hi,
I have a requirement wherein there are 2 BOs, and the first BO has a 1:n association to the other BO. On the UI, I want to show fields from both the BOs in ONE row, but after resolving 1 particular instance.
For eg: If the 2nd BO has 3 records, and only one of them is valid for the period I login, I should pick up only that record and show its fields along with other fields of the first BO.
BO1                                               BO2
ID, Desc, Type                              ID, BO1 ID, Current valid Indicator    Amount
01     Test1   A                               1,    01,           True,                                   1000
                                                       2,   01,           False,                                  2000
                                                       3,   01,           False,                                  3000
UI:
ID    Desc    Type     ID   Amount
01    Test1    A          1    1000
Although there are 3 records for the ID 01 of the BO1 via association to BO2, I should pick up only the first record to show on the UI. How should one resolve a 1:n association in UI designer ?
Kind Regards
Vinita

Hi Vinita,
The way I would do this, is:
in the UI-Designer
1. create a sub-list in the data model to model the 1:n cardinality
2. Bind it to the BO that has n instances
3. use an event handler and ruby script to set the lead selection to the correct record
e.g.
lead = 2
$data.MainList.SubList.SetLeadSelectedIndex(lead)
4. bind the data fields of the sub-list to the respective UI elements in the List pane of the main list
=> the entries from the lead selection of the sub list will be shown in the main list.
Best regards,
Ludger

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user1175303 wrote:
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Aj09 wrote:
Hi Folks,
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