Hi all, I have been asked to add default rules to a decision table. We have a decision table with several conditions. Data from first two columns are passed to action with binded variables. The action collects data from all passed rules. ------------------------------------- condition 1 | condition 2 | ... | action ------------------------------------- AAA | AD | ... | X ------------------------------------- BBB | AD | ... | X ------------------------------------- BBB | AE | ... | X ------------------------------------- BBB | CC | ... | X ------------------------------------- CCC | AD | ... | X ------------------------------------- DDD | AD | ... | X ------------------------------------- BBB | AE | ... | X ------------------------------------- ... | ... | ... | X ------------------------------------- Recently business asked me if it is possible to have default rules (rows) in the table if there is not any rule passing condition 1. ------------------------------------- DEFAULT | AD | ... | X ------------------------------------- DEFAULT | AE | ... | X ------------------------------------- Is it possible to have rules in decision table those can be fired only if a specific part of LHS never occurs in others rules? Thanks in advance, Syargey -- View this message in context: http://drools.46999.n3.nabble.com/decision-tables-and-default-rules-for-c... Sent from the Drools: User forum mailing list archive at Nabble.com. _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users

It doesn't suit :( A blank column causes an action applies additionally. But I need it applies only if no other conditions from first column is true. -- View this message in context: http://drools.46999.n3.nabble.com/decision-tables-and-default-rules-for-c... Sent from the Drools: User forum mailing list archive at Nabble.com. _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users

If you want to use a single XLS decision table then the answer is still, "no it's not possible". If however you willing\able to use DRL then a world of opportunities is opened to you. I believe something like this will work - but wait to be corrected - laune? ;) rule "specific 1" when SomeObject( someSpecificCriteria ) then insert(new Result() ); end rule "generic"

when not Result( ) then insert(new Result() ); end You could (possibly) use two XLS decision tables where the two rules above are effectively defined in each. With kind regards, Mike On 13 July 2011 09:09, Syargey <Syargey(a)tut.by&gt; wrote: > First I wanted to add parameters from "condition 1" column to a session > and > to add condition which makes default rule true if no parameter in session > is > equal to an entry argument. > > But I couldn't find a way to add a parameter from a condition expression > to > a session. > > Is it possible? > > -- > View this message in context: > http://drools.46999.n3.nabble.com/decision-tables-and-default-rules-for-c... > Sent from the Drools: User forum mailing list archive at Nabble.com. > _______________________________________________ > rules-users mailing list > rules-users(a)lists.jboss.org > https://lists.jboss.org/mailman/listinfo/rules-users > _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users