topic Accessing ActivityExecution in Business Rules in Alfresco Archive

Accessing ActivityExecution in Business Rules

mortezaadi — Sat, 29 Nov 2014 07:21:17 GMT

Can i access executionContext in Business rule.my goal is to write some rules based on process variables.for instance when context.getVariable('amount') > 100then context.setvariable('accepetd',true)If possible how can i do that?

Re: Accessing ActivityExecution in Business Rules

martin_grofcik — Mon, 01 Dec 2014 07:56:13 GMT

Hi,

The activiti user guide says:
http://www.activiti.org/userguide/#bpmnBusinessRuleTask


 For the input variable definition a list of process variables can be defined separated by a comma.

Regards
Martin

Re: Accessing ActivityExecution in Business Rules

mortezaadi — Mon, 01 Dec 2014 08:05:21 GMT

Yeah and its simply applying rules on those variable if the conditions meet the rule criteria.
however you cannot write a rule for primitive variables!!. So de default behavior doesn't helpt me much.
for instance how can you say in Rule that

when variable x is grather than 100 then ….

I found the solution anyway i extended BusinessRuleBehaviour and put the execution Context in the knowledgebase before firing rules and now i can write a rule such as

import org.activiti.engine.impl.pvm.delegate.ActivityExecution

rule "TestExecution"
      dialect "java"
when
      execution : ActivityExecution(getVariable("v_v") == "tech")
then
      execution.setVariable("v_v2",200);
      System.out.println("After Then XXX");
end