CODEWITHSUNDEEP
javadrools
reiley
reiley

Reputation: 3761

Drools multiple flows sequential execution

Scenario:

I want to execute multiple Drools flow one after another.

That is, I've one input, I'll pass it to on my first DRL/XLS file. Output of this first flow will act as input to second DRL.

My question is, does DROOLS have the facility to execute one flow after another in sequence. If so, how?

Till now, I'm guessing to do it via Java code only, which I want to avoid.

Thank You

Upvotes: 1

Views: 2230

Answers (4)

Viral
Viral

Reputation: 199

Using Rule Flow, you have lots of flexibility of execution of sequence, and if you want re execute/reuse the same rules from the current execution thread that also can be possible using rule flow.

There is a rule flow group property which is use to activate the rule(s) at a particulate time of execution. Passing output of first flow to another flow can be achieved by declaring your input parameter and set them.

You may use BPMN editor plugin in eclipse to achieve this functionality.

Upvotes: 0

Mahadev
Mahadev

Reputation: 31

Try using ruleflow diagrams. In which you have the luxury of using sub process. With this feature you can create a master flow that will call sub flows and in those sub flows you can have your rules tagged under particular ruleflow groups. If you could tell the scenario exactly I can provide in depth answer. Thanks.

Upvotes: 1

Kumar
Kumar

Reputation: 961

You can put all of your rules in different agenda group and load the all rules in a knowledge base. In each agenda group, keep one rule that will activate the next agenda group as below rule:

rule "agenda-group-activation"
dialect -1000
agenda-group "ag1"
   When 
        //some conditions
   Then
        drools.setFocus("nextAgendaGroup");
end

Hope this would help you.

Upvotes: 2

Wes Taylor
Wes Taylor

Reputation: 13

You could tag both of your DRL files with agenda-group "SomeGroupName". Your first DRL file could have a trigger rule that activates the second agenda-group.

Upvotes: 0

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