This even occurs in 5.6.0 - I went back to the old version thinking it maybe the plugin for 6.0.0.Final. It's not, it's the same problem.
Both these rule definitions cause a problem in the Rete Tree viewer tab: rule "ABC" when A ( $p : p ) B ( c < $p, c == 3 || c == 4 ) then System.out.println ("Hello"); end rule "ABC - 2nd version" when A ( $p : p ) B ( c < $p, c in (3, 4) ) then System.out.println ("Hello"); end It causes a problem with one of the AlphaBaseVertex - it is NULL and the Rete Tree render fails with a NULL pointer exeception. You can still see the tree after but that node (alphbasevertex) has no properties when looking at the property tab for it. The rules evaluate ok. But the corresponding information is not in the Rete Tree diagram. -- View this message in context: http://drools.46999.n3.nabble.com/in-operator-breaking-the-Rete-Tree-tp4028148p4028168.html Sent from the Drools: User forum mailing list archive at Nabble.com. _______________________________________________ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users