How to use the Calculated attibute in view object

Question

Hi,
I have a view object query with the calculated attribute name as 'TRANCODE' in the below sql.This query works for the initial page loading.
After the page gets loaded, there is a search section in the same page at the top.
Here i will have to build the whereclause to the same query and retrieve the values.
i am using jDeveloper 10.1.3.1, with adf and jHeadstart.
Can some one tell as how to use the calculated attribute TRANCODE in whereclause?
SELECT /*+ first_rows(10) */
BatchCntl.FILE_CNTL_ID,
CASE WHEN chk_bit(Entry.ENTRY_FLAGS, 2)='Y' OR Entry.ENTRY_SUBSTATUS = 'D' OR Entry.ENTRY_SUBSTATUS = 'J'
THEN
CASE eeh.TRAN_CODE
WHEN '21' THEN 'C'
WHEN '22' THEN 'C'
WHEN '31' THEN 'C'
WHEN '32' THEN 'C'
WHEN '26' THEN 'D'
WHEN '27' THEN 'D'
WHEN '36' THEN 'D'
WHEN '37' THEN 'D'
ELSE eeh.TRAN_CODE
END
ELSE
CASE Entry.TRAN_CODE
WHEN '21' THEN 'C'
WHEN '22' THEN 'C'
WHEN '31' THEN 'C'
WHEN '32' THEN 'C'
WHEN '26' THEN 'D'
WHEN '27' THEN 'D'
WHEN '36' THEN 'D'
WHEN '37' THEN 'D'
ELSE Entry.TRAN_CODE
END
END AS TRANCODE,
FROM Batch_Cntl BatchCntl, Entry, ENTRY_EDIT_HIST eeh
WHERE (BatchCntl.BATCH_TYPE = 'E')
AND (BatchCntl.BATCH_STATUS in ('A','D','R','P'))
AND entry.in_batch_cntl_id = BatchCntl.BATCH_CNTL_ID
and Entry.fi_rt = eeh.fi_rt (+)
and Entry.entry_id = eeh.entry_id (+)
AND (Entry.ENTRY_STATUS in ('A','D','R','P'))
ORDER BY BatchCntl.BATCH_CNTL_ID, Entry.entry_id
regards
Raj.

Answer 1

Let's say your application module is com.yourcompany.someapp.services.MyService, and let's say you authored a method like the following in the MyServiceImpl.java file:
  public void doSomething(int i, String s) {
  }and you exposed this AM custom method using the AM editor.
BC4J design time will automatically create you the com.yourcompany.someapp.services.common.MyService interface that will look like this if you go look at the source code:
package com.yourcompany.someapp.services.common;
import oracle.jbo.ApplicationModule;
public interface MyService extends ApplicationModule {
  public void doSomething(int i, String s);
}To use your custom method from a client, just cast your ApplicationModule to your custom interface like this:
import com.yourcompany.someapp.services.common.MyService;
  MyService mySvc = (MyService)yourAM;
  mySvc.doSomething(1,"foo");