Text items not being refreshed by LOV items.

Question

Hi all,
I've got a strange LOV behavior problems which I cannot solve and require your valuable time and efforts.
I've created a simple ADF JSF pages with 3 fields and the first field is LOV enabled. For all new row, after clicking the LOV icon, the LOV will show up and after selecting a particular value, it closes the LOV screen and replace it with a new row with the selected LOV data. It is all working well for all new rows just like a normal LOV should perform.
But I had problem with existing data. The row which I selected from the LOV somehow cannot referesh and overwrite any existing row (visually) but after commiting the data, it was actually written and refreshed with the correct data. Is there a property in the JHeadstart Application Definition Editor where I enforce the text items to be refreshed by the LOV items?
Thank you for your time and efforts.
Kind Regards,
John

Answer 1

Hi Guys,
I've performed the following scenarios attempting to refreshed Text items by the LOV Items.
Scenario 1: Create a new column called some_key load unique number into it. Set this column as the primay key and deselect existing primary keys as key attributes. Also, I've created a sequence and some_key is of type of DBSequence getting value from the new sequence starting from 1.
After generation when run and the result is:
JBO-27022: Failed to load value at index 11 with java object of type oracle.jbo.domain.DBSequence due to java.sql.SQLException.
## Detail 0 ##java.sql.SQLException: Invalid column index
Scenario 2: Create a unique index for the some_key column, rerun and the result is:
JBO-27022: Failed to load value at index 11 with java object of type oracle.jbo.domain.DBSequence due to java.sql.SQLException.
## Detail 0 ##java.sql.SQLException: Invalid column index
Scenario 3: Set some_key as number instead of DBSequence (from Entity Object Editor), rerun and the result is:
JBO-27021: Failed to load CustomDatum value at index 11 with java object of type oracle.jbo.domain.Number due to java.sql.SQLException.
## Detail 0 ##java.sql.SQLException: Invalid column index
Scenario 4: Deattach the offending View Object from the Application Module. Remove the offending view link and view object. Recreate view object and view link. Reset some_key is of type of DBSequence getting value from the new sequence starting from 1 (From the Entity Object Editor). After generation when run and result is:
SUCCESSFULLY!!
So, I guess the bottom line is here are the following things which you need to perform in order to enable text item to be refreshed by LOV item (if the detail table has composite primary keys)
1.) Create a new column
2.) Load unique value to it
3.) Create unique index for it
4.) Create entity object, view object and view link object.
5.) Set the new column as primary key.
6.) Deselect the key attributes for all composite primary key columns.
Regards,
John