Hi! I'm integrating Weka with Drools v.4 and I have a parsing error while trying to read the following DRL rule: rule "calculate average" when $inst : Instance() $media : Double(double value > 50000) from accumulate($value : inst.classValue() average($value)) then System.out.println(media ); end I have the following error: org.drools.compiler.DroolsParserException: Unknown error while parsing. This is a bug. Please contact the Development team. at org.drools.compiler.DrlParser.compile(DrlParser.java:180) at org.drools.compiler.DrlParser.parse(DrlParser.java:61) at org.drools.compiler.PackageBuilder.addPackageFromDrl(PackageBuilder.java :158) at com.sample.DroolsTest.readRule(DroolsTest.java:67) at com.sample.DroolsTest.main(DroolsTest.java:24) What I am doing wrong? Thx -- View this message in context: http://www.nabble.com/parsing-error-using-accumulate-tf4390367.html#a1251... 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

Well, seems the parser is raising the wrong message here... need to fix that... But the syntax should be something like: rule "calculate average" when $media : Number( doubleValue > 50000) from accumulate( Instance( $value : classValue ), average($value)) then System.out.println(media ); end []s Edson 2007/9/6, Isabelle Hupont <ihupont(a)ita.es&gt;: > > > Hi! > > I'm integrating Weka with Drools v.4 and I have a parsing error while > trying > to read the following DRL rule: > > rule "calculate average" > when > $inst : Instance() > $media : Double(double value > 50000) > from accumulate($value : inst.classValue() > average($value)) > then > System.out.println(media ); > end > > I have the following error: > > org.drools.compiler.DroolsParserException: Unknown error while parsing. > This > is a bug. Please contact the Development team. > at org.drools.compiler.DrlParser.compile(DrlParser.java:180) > at org.drools.compiler.DrlParser.parse(DrlParser.java:61) > at > org.drools.compiler.PackageBuilder.addPackageFromDrl(PackageBuilder.java > :158) > at com.sample.DroolsTest.readRule(DroolsTest.java:67) > at com.sample.DroolsTest.main(DroolsTest.java:24) > > What I am doing wrong? > Thx > -- > View this message in context: > http://www.nabble.com/parsing-error-using-accumulate-tf4390367.html#a1251... > 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 > -- Edson Tirelli Software Engineer - JBoss Rules Core Developer Office: +55 11 3529-6000 Mobile: +55 11 9287-5646 JBoss, a division of Red Hat @ www.jboss.com _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users