Do you mean object classes that represent DRL or objects that DRL operate upon (i.e. Facts)? Facts are simply POJO's and therefore IMO any mechanism that can deserialise into a POJO should suffice. You could also look into the use of JNI for the interface between C++ and Drools. With kind regards, Mike ________________________________ From: rules-users-bounces(a)lists.jboss.org [mailto:rules-users-bounces@lists.jboss.org] On Behalf Of Sachin Mangal Sent: 06 February 2009 07:13 To: rules-users(a)lists.jboss.org Subject: [rules-users] Java Bean dependency Hi, I want to use Drools as a part of a classification system which consist of Machine Learning based classification (semi supervised) followed by an expert system (rule based classification). The issue is that ML part and the framework is in C++ and Drools supports Java. So, I will use some IPC mechanism for sending data objects from framework to the rule system (I have my own serialization and deserialization modules for that). I just want to know that the object classes correspoding to DRLs need to be in some special format or any format with getter and setter methods will do? Thanks in advance, Sachin Mangal Member of Research Staff, Guavus Network Systems Pvt Ltd