2007/9/6, Isabelle Hupont <ihupont@ita.es>:

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
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