Re: [rules-users] Does Session effeciently filter unused facts, or...

Well, I was about to say "you could do this using rule inheritance" but there is a caveat, and possibly a bug. It almost works. :) Try this: rule "BaseStream1Criteria" enabled false when m : Message( foo == "BAR" ) from entry-point "Stream1" then System.out.println( "BaseStream1Criteria" ); end rule "SubRule1" extends "BaseStream1Criteria" when Message( status == Message.HELLO ) from m; then System.out.println( "SubRule1 " ); end rule "BaseStream2Criteria" enabled false when m : Message( foo == "BAS" ) from entry-point "Stream2" then System.out.println( "BaseStream2Criteria" ); end rule "SubRule2" extends "BaseStream2Criteria" when Message( status == Message.HELLO ) from m; then System.out.println( "SubRule2 " ); end Basically, define one rule for each entry point that has the global criteria for that entry point. Then extend that rule. The caveat is that it seems you can't use the events matched in the super-rule in the RHS of the subrule. (Try putting the object "m" matched into the action of either of the subrules. It neither validates in eclipse nor compiles at runtime, drools 5.0.1.) If this isn't fixed in trunk (I can't check at the moment) I'll open a jira. Code attached. When you run it, this should be the output: SubRule2 SubRule1 --- On Mon, 11/23/09, Barry Kaplan <groups1(a)memelet.com&gt; wrote: