nagarajgond commented on issue #6543:
URL:
https://github.com/apache/incubator-kie-drools/issues/6543#issuecomment-3642681752
Got it.
If you use an `or` condition where a variable (like $f) is only bound in
some branches (not all), Drools tries to resolve $f for the then block
regardless of which branch matched. If the `not` branch matches, $f is not
bound, leading to a NullPointerException during rule evaluation
So I have to avoid variables for my use case where I use `not` condition as
well.
Can I solve it like this, is there any performance impact with approach ?
Any other rule gets impacted by this fact?
```
rule "rule5_preprocess1"
salience -997
when
(/facts [ name == "address", value == "1.1.1.1" ])
or ( not /facts [ name == "location.city" ] )
or ( /facts [ name == "address", value == "1.1.1.2"])
then
DroolsFact fact = new DroolsFact();
fact.setPreprocess1(true);
facts.add(fact);
System.out.println("rule5_preprocess1 fired");
end
```
@tkobayas - need your suggestions please.
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