ABAP Code in Start Routine for restricing the data records from ODS1 - ODS2

Question

Hi
I need small ABAP Code in Start Routine Of Update rules Of ODS . Im in BW 3.5 .
I have records like below in first layer ODS and i want to restrict some records while going to second layer ODS ..
ODS1 :-
DocNO   EventType    Date
123         001             08/08/2008
123         003             08/08/2008
123         011              09/08/2008
I want one record in ODS2 for this document number whose EventType = 001 only and date of third record ... like below
Doc NO     EventType      From Date          Todate
123              001               08/08/2008         09/08/2008
So how can i get like this record in the ODS2 which will get data from ODS1 . So i need to write the code in the start routine of the ODS2 .
So please give the me the code for start routine ....
Regards
Suresh

Answer 1

Its difficult in BW 3.5 to include this logic in START_ROUTINE as you cannot add the extra to_date field to the DATA_PACKAGE table.
You need to create a new global internal table with the same structure of DATA_PACKAGE with additional field to_date. then use the logic to fill in the global internal table
define a internal table new_data_package with the required structure like (docno, eventtype, fromdate todate)
data: l_w_datapkg_001 type data_package,
data: l_w_newdatapkg type new_data_package,
data: l_w_datapkg_011 type data_package
LOOP AT DATA_PACKAGE INTO l_w_datapkg_001 WHERE event_type = '001'.
l_w_newdatapkg-docno = l_w_datapkg_001-docno.
l_w_newdatapkg-event_type = l_w_datapkg_001-event_type.
l_w_newdatapkg-fromdate = l_w_datapkg_001-date.
MOVE CORRESPONDING FIELDS OF l_w_datapkg_001 INTO l_w_newdatapkg.
READ TABLE data_package INTO l_w_datapkg_011
WITH KEY docno = l_w_datapkg_001-docno
                 event_type = '011'.
l_w_newdatapkg-to_date = l_w_datapkg_011-date.
APPEND l_w_newdatapkg TO new_data_package          
ENDLOOP.
Now the new datapackage contains the ODS2 data that u needed