Hi David and Leo, thanks for the info. our plan is to get brms exposed to business users so they can manage rules with the guided editor(with template and guidance for sure). was thinking they need to be able to create new packages, which should not require any app side change. what i can do is to pre-define packages for different domains and let users use categories to organize their rules(always assigned to the proper pre-defined package or so). thanks Jeff ----- Original Message ---- From: Leonardo Figueiredo <leo.lists(a)gmail.com&gt; To: Rules Users List <rules-users(a)lists.jboss.org&gt; Sent: Wednesday, October 1, 2008 8:34:56 AM Subject: Re: [rules-users] to have some hierarchical control over rules in the same package Hi, Why dont you build an RuleBase for each package and runs it when and where needed? Or add an remove the packages from RuleBase as needed? ruleBase.addPackage( pkg ); // Add a package instance ruleBase.removePackage( "org.com.sample" ); // remove a package, and all its parts, by it's namespace Is it what you want to do? Regards, Leo On Mon, Sep 29, 2008 at 7:18 PM, hongyu lu <hl_107(a)yahoo.com&gt; wrote: Hi, I have a use case where I would like to group rules by package(each package would be one experiment in my app). There are a couple attributes at the package level, which will enable/disable all rules of that package(not being fired). What would be the best way to achieve this? I am new to Drools and it looks like the rule definition is kinda flat. I would like to avoid defining package level conditions within each rule. thanks Jeff _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users