Re: [rules-users] Can get "not equal" (!=) to work but not "equal" (==) in LHS
Going by the example provided, the code is a constraint on the left hand side … so
it's valid to use == or !=. It's not Java code, it's MVEL and is automatically
converted to use the appropriate .equals("") method on the Java objects.
You would only need to use .equals("") inside an eval or in Java code on the
RHS.
So the answer is something else … but I haven't worked out what yet. :)
Steve
On 5 Feb 2013, at 17:11, rjr201 <rich.j.riley(a)gmail.com> wrote:
It may be because in Java you have to compare strings using
.equals("");
So in your case it would be:
ruleFlowId.equals("test") == true
It's because Strings are objects, and == tests to see if the String is
literally the same object as the other String, not just a String with the
same value. != works because they aren't the same object.
Hope that works,
Rich.
--
View this message in context:
http://drools.46999.n3.nabble.com/Can-get-not-equal-to-work-but-not-equal...
Sent from the Drools: User forum mailing list archive at Nabble.com.
_______________________________________________
rules-users mailing list
rules-users(a)lists.jboss.org
https://lists.jboss.org/mailman/listinfo/rules-users