[rules-users] problems with Otherwise()

[Matt Geis]

I've got the following three rules in my DRL, but I'm seeing odd results.

rule "matchfound"
    when
        s : String()
    then
        System.out.println("got a match, string found in working memory");
end

rule "intmatchfound"
    when
        i : Integer()
    then
        System.out.println("got a match, Integer found in working memory");
end

rule "no matching rule"
    when
        Otherwise()
    then
        System.out.println("no rule applied, using otherwise rule");
end


If I assert a String, then the 'matchfound' rule fires.  If I assert an Integer, 'intmatchfound' fires. If I assert an object of a different type or do not assert anything, the rule I would expect to fire ('no matching rule') never fires.  The only way I can get it to fire is if I explicitly assert an instance of Otherwise.

I was under the impression that Drools would automatically assert it when it sees that no other rule has fired.  

Am I doing something wrong here?  Did usage of Otherwise change?




       
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