CODEWITHSUNDEEP
jbossdrools
bmk1977
bmk1977

Reputation: 141

Orderly execution of multiple rule defined in one DRL file

I defined multiples rules in one DRL file, how to set order, want to execute one after another (top to bottom).

Upvotes: 0

Views: 1718

Answers (3)

Mini Nihat
Mini Nihat

Reputation: 38

Setting priority to rules is the best form. Use Salience to determine the priority of each rule, where a higher number denotes a higher priority. The default Salience for rules is 0, and you can give negative Salience, for example,if you want a rule to be fired last.

Upvotes: 0

salaboy
salaboy

Reputation: 4153

If you use salience you will be killing the rule engine, because you will be forcing the rule execution order instead of letting the engine decide. Cheers

Upvotes: 0

Vignesh Bhaskar
Vignesh Bhaskar

Reputation: 98

Rules are fired automatically when the conditions are met when the inserted facts(objects) are updated. But if in case you want to run it from top to bottom, you can set a property called salience in the rule. The value it takes is an integer. The rule with the highest salience is executed first.

rule "First name mandatory" salience 10 when (Person(firstName=="" || firstName==null)) then ... end

Upvotes: 1

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