Golden Gate - Filter and transform update into a delete

Question

Hi all,
I am new in GoldenGate, so even worst of not knowing how to do things is not to know if they are possible .
I have a condition for a table, and I only replicate if the insert/update meets that condition, but I also need to delete on the target if in an update it doesn't meet anymore the condition.
Is this possible, I am trying to find an example, anyone can help me.
Thanks in advance.
Best Regards,
Rogério

Answer 1

Hiee Rogério,
Consider the following example:
Source Table A
Target Table B
Structure of tables A & B
Table A
id varchar(5)
name varchar2(10)
marks number(2)
grade varchar(4)
Now any new Inserts or Updates are to be propogated from A to B, only if grade is "PASS" and delete it from the target if grade is updated to "FAIL" or marks < 40.
I assume this scenario is similar to what you are working with.
You have to create an On Insert - DML trigger on intermediate table C, which would delete rows from target table B.
Solution:
extract exta
userid ggadm@source, password ggadm
exttrail ./dirat/ext/aa
table user.A;
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
replicat repa
userid ggadm@target,password ggadm
handlecollisions
--replicats inserts or updates with grade = "PASS" into target--
getinserts
getupdates
map user.A, tagret user.B,
filter (on inserts, on updates, @if (@streq(grade = "PASS")) );
--          replicates updates with grade = "FAIL"            --
--           or marks < 40 to a separate table C               --
ignoreinserts
getupdates
insertupdates
handlecollisions
map user.A, tagret user.C, where (grade = "FAIL" or marks < 40);
SQLEXEC "truncate table user.c" every 1 hour  
-- Frequency of truncation can be decided based on --
-- 1. AMOUNT OF REDO                                      --
-- 2. SPACE LIMITATIONS                                   --
-- 3. DAILY TPS                                                   --