How to Design a Page for Both Insertion and Updation

Question

Hi,
I have Page where I need to populate a table from Standard PO/AP table and once the save is clicked on the table,
the data shoudl be inserted in custoim table.
Ex: Ui table wil have 3 columns and say 5 rows
- PO#
- Line#
- Amount for 'X' purpose
where PO# and Invoice# is populated and Amount is empty
User will enter value in Amount column in all 5 rows and click on Save button.
Now these 5 rows with 3 columns should be inserted into the custom table (PO#, Line# and Amount)
How Can I design Model Objects for such a requirement?
Thanks,
Kamath

Answer 1

You should create an EO on your custom table and a VO on your EO. As you insert records in the VO, corresponding rows are created as EO rows and when you commit (getOADBTransaction().commit()) in the AM everything would get committed to the DB.
As far as subject goes of having a common page, everytime you can execute the VO with the bind parameters and check whether a row exists. If it does exist then update the VO Row (I expect the master record to be unique row). Otherwise create a new Row for the master and then correspondingly for the details row.
Do let me know in case you need additional information.
Regards
Sumit