[rules-users] DRL package builder or rule base error

Hi all, I have some set of rules which work on same Person object but depending on whether a person is student/employee/Faculty, the rule will have dfferent logic. So, I've made 3 .drl files, one will have all the rules for students, other for employee and then last .drl for faculty. All 3 .drl have same package name (as the first statement in drl) but all rules are named differently. When my rule engine starts, it reads these 3 drl files and adds them to a single rule base, starts a new session, inserts person in working memory and fires rules. Now, my questions are...is there anything odd/wrong with this approach? Secondly, I had some rules names same in different drl and when I changed them ....then I started getting null pointer exception error..... during parsing of drl files. Any idea why is that? code snippet: list=new ArrayList<File>(); list.add(new File("students.drl")); list.add(new File("emloyee.drl"); list.add(new File("faculty.drl")); Iterator<File> it = list.iterator(); ruleBase = RuleBaseFactory.newRuleBase(); builder = new PackageBuilder(); Reader source=null; while(it.hasNext()) { source = new InputStreamReader(RuleEngine.class.getResourceAsStream(it.next().toString())); builder.addPackageFromDrl(source); //if DRL has errors don't add it to the RuleBase if(builder.hasErrors()) log4j.logError(RuleEngine.class, builder.getErrors().toString()); else ruleBase.addPackage(builder.getPackage()); } workingMemory = ruleBase.newStatefulSession(); workingMemory.insert(person); workingMemory.fireAllRules(); -- View this message in context: http://www.nabble.com/DRL-package-builder-or-rule-base-error-tp20627083p2... Sent from the drools - user mailing list archive at Nabble.com.