I have a custom accumulate function written in java which I use in my rules. To make this work in eclipse, I had to define this function in drools.packagebuilder.conf file and put that in the root of the project.

Drools.packagebuilder.conf file content:

drools.accumulate.function.groupCount = com.company.analysis.accumulators.GroupByAccumulateFunction

When I try the same in guvnor, I am not sure where to define this custom function (similar to drools.packagebuilder.conf file) so that my rules will get built into a package. Currently when I build the package from guvnor, I get the following error:

Unable to build expression for 'accumulate' : No accumulator function found for identifier: groupCount

This is because the drl file doesn’t know how to interpret the “groupCount” function as its not defined anywhere.

I looked up the documentation and the mailing list and couldn’t find any solution. I also tried importing the whole drools.packagebuilder.conf file into guvnor and that doesn’t seem to work as well.

Thanks for your help,

Srini