Simple Example of using business rule in SOA

hello,

i am new to SOA suit. i just learned how to use file adapter and database adapter . now i want to use business rule. i have searched over the internet a lot but could not find any thing useful. here is what i want to do

i have this csv file like following

value,type

1,odd

2,even

3,odd

4,even

5,odd

6,even

i want to read this file and write only those numbers to output.txt file which are even. i guess for that i have to use business rule.

if any one can please provide some thing useful or a sample project i will be really thankful

-Usman