File list (Check if you may need any files):
shopping
........\.classpath
........\.project
........\bin
........\...\org
........\...\...\drools
........\...\...\......\hu
........\...\...\......\..\test
........\...\...\......\..\....\Shopping$Customer.class
........\...\...\......\..\....\Shopping$Discount.class
........\...\...\......\..\....\Shopping$Product.class
........\...\...\......\..\....\Shopping$Purchase.class
........\...\...\......\..\....\Shopping.class
........\...\...\......\..\....\Shopping.drl
........\...\...\......\..\....\test.rf
........\src
........\...\main
........\...\....\java
........\...\....\....\org
........\...\....\....\...\drools
........\...\....\....\...\......\hu
........\...\....\....\...\......\..\test
........\...\....\....\...\......\..\....\Shopping.java
........\...\....\rules
........\...\....\.....\org
........\...\....\.....\...\drools
........\...\....\.....\...\......\hu
........\...\....\.....\...\......\..\test
........\...\....\.....\...\......\..\....\Shopping.drl
........\...\....\.....\...\......\..\....\test.rf