[jboss-jira] [Red Hat JIRA] (DROOLS-5724) Fix DMN-PMML integration

Fix DMN-PMML integration ------------------------ Key: DROOLS-5724 URL: https://issues.redhat.com/browse/DROOLS-5724 Project: Drools Issue Type: Task Reporter: Gabriele Cardosi Assignee: Matteo Mortari Priority: Critical Labels: TrustyAI To have Trusty-PMML working withouth MVEL (i.e. drools-7.45) a fix has been made. Unfortunately, that modification broke DMN-PMML integration inside drools. -A very quick and dirty solution has been to- -1) expose the- -DMNRuntimeKB runtimeKB inside DMNRuntimeImpl- -2) based on the actual class at runtime, if it is "DMNRuntimeKBWrappingIKB" use a code patch the works in drools, otherwise the "kogito" one.- -This has been done only for extreme needs, but must be redisigned and properly implemented ASAP- The root cause of that is DMN ignoring the Kogito API. Kogito defines a _container_ class (org.kie.kogito.app.Application) that is meant to be used by all components (processes, ruleunits, decisions and predictions) to invoke the others. Trusty PMML fullfill this API, exposing predictive models throught the the {code:java} org.kie.kogito.app.PredictionModels.getPredictionModel(String modelName) {code} but since DMNKogito completely ignore this, a painful workaround has been needed to solve the issue. Instead of adding workarounds one on top of the other, a different approach on DMN side is required, respecting the constraints put by the containers. Having done that, the DMN-PMML integration would be automatically resolved. I'll be available for more explanation, if needed. [~evacchi] [~danielezonca] [~tirelli] FYI