Re: [rules-users] OR with multiple binding in LHS
Francesco,
You need to be careful when doing that, if you are using 3.0.x version.
First thing is that both sides of your "or" must be perfectly
"balanced", i.e., the same classes in the same order. I didn't tried
that, but I think it works if you simply declare your binding once:
rule "orCondition"
when
myObj : (MyObject(field1 == "a", $field2 : field2, $field3 :
field3) or MyObject(field1 == "b")) //correct column
AnotherPattern( attr2 == $field2, attr3 == $field3 )
then
System.out.println("fields = "+ field2 + field3);
end
This is a workaround for the 3.0.x versions.Try it and let me know plz.
In 3.1M1 and later, all this is fixed and the correct is to declare
the variable in all logical branches:
rule "orCondition"
when
myObj : (MyObject(field1 == "a", $field2 : field2, $field3 :
field3) or MyObject(field1 == "b", $field2 : field2, $field3 :
field3)) //correct column
AnotherPattern( attr2 == $field2, attr3 == $field3 )
then
System.out.println("fields = "+ field2 + field3);
end
[]s
Edson
Francesco Campagnola wrote:
Hi,
I'd like to write a rule that contains an OR condition in the LHS, to
match the presence in the working memory of an object with particular
values of a specific field. In the rest of LHS, i need to bind other
values of the specific object matched. Is there a particular sintax to
use for the binding?
For example:
rule "orCondition"
when
myObj : (MyObject(field1 == "a") or MyObject(field1 ==
"b")) //correct column
field2: myObj.getField2 () // how to correctly get
field3: myObj.getField3() // those values?
then
System.out.println("fields = "+ field2 + field3);
Thanks in advance, FC.
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Edson Tirelli
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