Fetch encrypted data to Items

Question

Hello Everyone,
I insert data in form page. And, process encrypts these data to database.
I can see data in İntreactive Report. But, when I clicked 'update' buton in intreactive report for a row, data is directed to form page's items as encrypted.
How can i decrypte data on form page for updating?
I think, I want to fetch row from table process.
Any suggestion thanks
Edited by: ksql on 09.Mar.2011 23:07

Answer 1

suppose you have a table named my_table
  id    NUMBER
  col1 VARCHAr2
  col2 VARCHAr2
  col3 VARCHAr2And you have functions named decrypt and encrypt that is used for encryption-decryption
<li>create a view named my_view
create view my_view as select id,decrypt(col1) col1,decrypt(col2) col2,decrypt(col3) col3 from my_tableYour current tabular form's SQL query would be based on my_table,
for example
select id,col1,col2,col3 from my_tablechange that to reference the view
select id,col1,col2,col3 from my_viewYou would have to change the table reference in the MRU/MRI processes so that it uses the view name as the database table. With this apex would(try) and insert/update the records from the view.
Since a view does not have these operations , you would have to handle the insert/update processes by writing a trigger that handles such cases , which is done using an "instead of" trigger on the view(documentation).
CREATE OR REPLACE TRIGGER my_view_insert
INSTEAD OF UPDATE ON my_view
FOR EACH ROW
BEGIN
  UPDATE my_table
  SET col1 = encrypt(:NEW.col1)
       ,col2 = encrypt(:NEW.col2)
       ,col3 = encrypt(:NEW.col3)
  WHERE id= :NEW.id;
END;Hope that was clear enough.