The list that might contain the value of type is alphaList, not $test, which is the reference to the object containing the list as a field. -W
2009/5/14 Armaghan Mahmud <[email protected]> > Hi, > > I need help with constructing rules for my scenario. > > I started off by creating enum values in the main java file and comparing > them with the rules to get different responses for different enum values. > That was easy. > > This time, I'm constructing a list of enum values and passing them into the > rules engine as well. I would like to configure my rules in such a way that > when they look for the different enum values, they should also look in the > list to test if the enum value passed into the rules engine is a member of > the list or not. My old rules looked like this: > > rule "Testing for Alpha" > salience 100 > when > alpha : AlphaWrapperClass(type == Class.ALPHA) > then > System.out.println("Found Alpha"); > alpha.isFound(true); > end > > I tweaked the above rule to : > > rule "Testing for Alpha" > salience 100 > when > $test: AlphaEnumCollectionsWrapperClass(alphaList : alphaList) > alpha : AlphaWrapperClass(type == Class.ALPHA && $test contains type ) > then > System.out.println("Found Loudspeaker Equipment. Who wants to jam that? > Must resist... Jamming sequence in progress... "); > materiel.setJam(true); > end > > But I'm seeing the following error: > > org.drools.rule.InvalidRulePackage: Unable to create Field Extractor for > '$test' of '[ClassObjectType classAlphaEnumCollectionsWrapperClass]' in rule > "Testing for Alpha": [Rule name=Testing for Alpha, agendaGroup=MAIN, > salience=100, no-loop=false] > > I'd greatly appreciate your help. > > Thanks, > Armaghan > > > _______________________________________________ > rules-users mailing list > [email protected] > https://lists.jboss.org/mailman/listinfo/rules-users > >
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