Problem when trying to refresh oracle screens with latest data

Question

hello experts,
i have one problem,i want to refresh the oracle screen with the latest data from the data
base.
It is a two stage process.At first step one user will select a row from the screen and then he will press a button .
now the second screen will appear and the detail of the employee will be displayed.
First step has been completed and the data is coming in the second form via parameters and i can see the full information of the employee.
Now i want to refresh the oracle form i.e. suppose if my dba has made any changes in the oracle table( EMP table) i want that after pressing the refresh button user can see the
latest data from the database.
in WHEN_BUTTON_PRESSED trigger i have written this codes.
enter_query;
execute_query;
but they are not giving the expected result.
And one more thing please suggest whether in the second form i should use database item
or non database item.
When i am using database item when i am trying to close second from one pop up is appearing
and asking that whether i want to save the changes.
please suggest how can i remove this message from my application.
Regards
Anutosh

Answer 1

Hi,
what data did you transfer via parameters to the second form ?
how did you populate the datablock in the second form ?
Typical solution would be:
(For my example the block is both forms is named EMP, and is based on the table SCOTT.EMP)
In Form 1, transfer the primary key-value of the current record to a global or parameter (will use global in my example):
e.g. you have a WHEN-BUTTON-PRESSED-Trigger with the following code:
<pre>
:GLOBAL.EMPNO:=:EMP.EMPNO;
CALL_FORM('FORM2');
</pre>
In Form 2, you have a WHEN-NEW-FORM-INSTANCE-Trigger with code:
<pre>
DEFAULT_VALUE('GLOBAL.EMPNO', NULL);
IF :GLOBAL.EMPNO IS NOT NULL THEN
GO_BLOCK('EMP');
EXECUTE_QUERY;
:GLOBAL.EMPNO:=NULL;
END IF;
</pre>
On block EMP in Form 2 there is a PRE-QUERY-Trigger with following code:
<pre>
IF :GLOBAL.EMPNO IS NOT NULL THEN
:EMP.EMPNO:=:GLOBAL.EMPNO;
END IF;
</pre>
And at last, in your refresh-button would be the following code:
<pre>
:GLOBAL.EMPNO:=:EMP.EMPNO;
GO_BLOCK('EMP');
EXECUTE_QUERY;
:GLOBAL.EMPNO:=NULL;
</pre>
Hope this helps