I got a ClassCastException once I ran my app with the WorkingMemoryFileLogger attached to it. After a bit of debugging the CCE is being thrown because for an unknown reason the column of a Declaration is wrong: it should have been 0 like all the other declarations on the same Fact, but it is 0 instead. It seems that column is wrongly set when building the rule package, even before evaluating. What I dont understand is why this is happening and why I dont see the problem when I remove the WorkingMemoryFileLogger from the picture. The rules goes a bit like this: rule when Fact1(var1: a, var2: b, var3: c) c : ( Setting( x==1, y==2, z==3) or Setting( x==1, y==2, z==ANY) or Setting( x==1, y==ANY, z==ANY) or Setting( x==ANY, y==ANY, z==ANY) ) not Fact2( a == var1, b== var2, c==var3) then ... end The declarations for a and b, for instance are referring to the right column, but c doesnt. BTW: Does any one know of a better pattern for implementing cascading settings? The biggest problem I am facing is that I need to replicate the long list or OR Settings for each rule that needs to check for them (the actual settings depend on fact properties). Here is the exception: org.drools.spi.ConsequenceException: java.lang.ClassCastException: com.... at org.drools.common.DefaultAgenda.fireActivation(DefaultAgenda.java:441) at org.drools.common.DefaultAgenda.fireNextItem(DefaultAgenda.java:407) at org.drools.common.AbstractWorkingMemory.fireAllRules(AbstractWorkingMemory.java:268) at org.drools.common.AbstractWorkingMemory.fireAllRules(AbstractWorkingMemory.java:255) _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users