Re: [rules-users] Suppressing reciprocal matches

D Brock wrote: > I have defined the following rule to detect when duplicate objects (in this > example, Widgets) exist. This always produces two matches, and therefore > two messages. I understand why this occurs, but I would like for only one > message to be reported. I cannot retract one of the widgets after a match > b/c all are needed for additional rules matching. Is the a conventional way > for accomplishing the elimination of the reciprocal match? > > rule "Do not allow duplicate widgets" > when > $w : Widget( $name : name ) > Widget( this != $w, name == $name ) > then > System.out.println( "Duplicate widgets found with name = " + $name ); > end > We are looking into a new conditional element that can achieve this. The idea is when you use this CE, it ensures only a single permutation will be propagated. In the meantime you can probably try something like: $w : Widget( $name : name ) Widget( this != $w, hashCode < $w.hashCode, name == $name ) _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users