I have a decision table with the conditions shown in the graphic below. When Drools attempts to compile the spreadsheet I get the following errors: nested exception is java.lang.RuntimeException: Unable to return Declaration for identifier '$pgMeta' : [Rule name='Section Head Spacing_18'] Unable to create restriction '[VariableRestriction: == $pgMeta ]' for field 'pageMeta' in the rule 'Section Head Spacing_18' : [Rule name='Section Head Spacing_18'] Unable to build expression for 'from' : [Error: Failed to compile: 2 compilation error(s): - (1,7) unqualified type in strict mode for: $pgMeta - (1,22) unable to resolve method using strict-mode: java.lang.Object.getLineMetas()] [Near : {... Unknown ....}] ^ [Line: 1, Column: 0] '$pgMeta.getLineMetas()' : [Rule name='Section Head Spacing_18'] http://drools-java-rules-engine.46999.n3.nabble.com/file/n2195003/Picture... The LHS of a hand-coded rule for this, is as follows: when $pageMeta : PageMeta() $bodyLines : LineMeta( pageMeta == $pageMeta, lineType == LineType.BODY ) from $pageMeta.getLineMetas() $bodyLine : LineMeta( previousPageMetaComponent != null, previousPageMetaComponent == previousLineMeta, previousLineMeta.lineType == LineType.SECTION_HEAD, verticalSpacingToPreviousPageMetaComponent< 5.9525 ) from $bodyLines Can this rule be created in a Decision table or not? Your help is most appreciated!

Thank you so much for the posting! All I had to do was add the 'X' character in the cell below $pgMeta: PageMeta() and that fixed it!

When is it necessary to add the 'X' character and when is it ok to leave it blank? I don't recall seeing information about that in the doc.

Thanks also for the SpreadsheetCompiler code. I didn't think SpreadsheetCompiler was available until 5.2 because I didn't see it in the http://downloads.jboss.com/drools/docs/5.1.1.34858.FINAL/apidocs/index.html 5.1 javadoc .

Tihomir, Do you know if decision tables support metadata <http://downloads.jboss.com/drools/docs/5.1.1.34858.FINAL/drools-expert/ht... ------------------------------------------------------------------------ View this message in context: Re: Need help with Decision Table Conditions <http://drools-java-rules-engine.46999.n3.nabble.com/Need-help-with-Decisi... Sent from the Drools - User mailing list archive <http://drools-java-rules-engine.46999.n3.nabble.com/Drools-User-f47000.ht... at Nabble.com. _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users

I would not use I / DESCRIPTION for these reasons: * it's not parameterized, and I think you don't want to repeat the @Meta(...) for every rule, you just want the argument * you can use only one I column, since the 2nd one silently overwrites the 1st one, so you'll have to squeeze multiple @s into one cell * it is an undocumented feature, and the name would suggest that it was intended for providing a comment Adding a proper metadata column type is simple, given what is available from other column types. -W 2011/1/10 Tihomir Surdilovic <tsurdilo(a)redhat.com <mailto:tsurdilo@redhat.com>> Hi Jason, for fact types and attributes you should be able to reuse the Functions keyword in the RuleSet section of your sheet, for example: ----------------------------------------------- | Functions | declare Person @author( Bob ) ......... end | ----------------------------------------------- For rule attributes you can reuse the "I" keyword as the cell header and add the attributes, for example: ------------------------------------------------- |RuleTable Sample| | | ------------------------------------------------- | Condition | I | Action | ------------------------------------------------- | $p : Person | | | ------------------------------------------------- | name==$param| | | ------------------------------------------------- | SomeName | @author( Bob ) | System.out..... | ------------------------------------------------- Neither are optimal, but just workarounds. If you raise a Jira, I can put on todo list. Hope this helps. Thanks. Tihomir On 1/7/11 9:35 PM, Jason Mihalick wrote: > Tihomir, Do you know if decision tables support metadata > <http://downloads.jboss.com/drools/docs/5.1.1.34858.FINAL/drools-expert/ht... > > ------------------------------------------------------------------------ > View this message in context: Re: Need help with Decision Table > Conditions > <http://drools-java-rules-engine.46999.n3.nabble.com/Need-help-with-Decisi... > Sent from the Drools - User mailing list archive > <http://drools-java-rules-engine.46999.n3.nabble.com/Drools-User-f47000.ht... > at Nabble.com. > > > _______________________________________________ > rules-users mailing list > rules-users(a)lists.jboss.org <mailto:rules-users@lists.jboss.org> > https://lists.jboss.org/mailman/listinfo/rules-users _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org <mailto:rules-users@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

JIRA Issue added here: https://issues.jboss.org/browse/JBRULES-2866 -- View this message in context: http://drools-java-rules-engine.46999.n3.nabble.com/Need-help-with-Decisi... Sent from the Drools - User mailing list archive at Nabble.com. _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users