topic Re: BusinessRuleTask as Service Task (Integration with external Drools engine) not working. in Alfresco Archive

BusinessRuleTask as Service Task (Integration with external Drools engine) not working.

rahulkrs — Wed, 03 Jul 2013 10:41:52 GMT

Hi ,I am trying to use my own Drools engine for some reasons. I created a BusinessRuleTask somthing related to this:<businessRuleTask id="businessRuleTask" activiti:class="com.my.RuleDelegate" /> I got into two issues:1. I was expecting if I define a BusinessRuleTask as a ServiceTask then proc

Re: BusinessRuleTask as Service Task (Integration with external Drools engine) not working.

rahulkrs — Wed, 03 Jul 2013 10:44:56 GMT

I used something like:
businessRuleTask id="businessRuleTask" activiti:class=com.test.RuleDelegate"
This didn't work.

Re: BusinessRuleTask as Service Task (Integration with external Drools engine) not working.

frederikherema1 — Wed, 03 Jul 2013 11:10:45 GMT

The engine can never know "your class" will take care of the DRL files in the deployment, unless you tell him. You can disable the drool-deployer, by the way (just don't include a reference to the org.activiti.engine.impl.rules.RulesDeployer which -supprise- deployed the rules. Or deploy the .DRL-files using a different extension 'eg. my-rools.mydrl'), so the deployer doesn't pick those up. Later, when your custom service-task needs the rules, add all *.mydrl to the knowledge base instead.

Another alternative is to subclass the DroolsDeployer to use whatever knoledgebase/rules you want when .drl-files are deployed…

Re: BusinessRuleTask as Service Task (Integration with external Drools engine) not working.

rahulkrs — Tue, 16 Jul 2013 12:39:00 GMT

Thanks a lot Fred ! Can you kindly help me with the doubts below:

"The engine can never know "your class" will take care of the DRL files in the deployment, unless you tell him"
Rahul: I have mentioned businessRuleTask id="businessRuleTask" activiti:class=com.test.RuleDelegate" this should have tell Activiti engine tnat I would use my own Delegate:

2.You can disable the drool-deployer, by the way (just don't include a reference to the org.activiti.engine.impl.rules.RulesDeployer which -supprise- deployed the rule

Rahul: Can you kindly help me with this solution ? I didn't find a way to do it, I have not used Drools anywhere in my deployment.

Thanks,
Rahul

Re: BusinessRuleTask as Service Task (Integration with external Drools engine) not working.

frederikherema1 — Wed, 17 Jul 2013 12:17:00 GMT

1. That doesn't work… you can only have activiti:class on ServiceTask, ExecutionListener and TaskListener.

2) This is in your process engine configuration. The activiti.cfg.xml file OR spring-context file you're using… In in doubt, add the file to your next reply (wrap in code-block please)