[rules-users] keep only one, retract all other

[Martin Minka]

I was using ArrayList before and I don't think this is the real problem.
collect() will return object compatible with List interface so it is valid
to use size() and get() methods on $removeUs.
I have helper method myhelper.log() with accepts any object and *
myhelper.log($removeUs.get(i))* works for me, unfortunately
*retract($removeUs.get(i))
*doesn't work with error:

Error: unable to resolve method using strict-mode:
org.drools.spi.KnowledgeHelper.drools()] [Near : {...
drools.retract($removeUs ....}]

It looks like it is not even compiled.

2012/11/30 Wolfgang Laun <wolfgang.laun at gmail.com>

> On 30/11/2012, Martin Minka <martin.minka at gmail.com> wrote:
> > Thank you for the tip. What solution would you suggest to solve my
> problem
> > ?
>
> Look into the javadoc of java.util to find any class implementing List :-)
> -W
>
> >
> > Martin
> >
> >
> > 2012/11/30 Wolfgang Laun <wolfgang.laun at gmail.com>
> >
> >> You cannot use an interfact (List) to instantiate an object, which
> >> is happening due to the collect.
> >> --W
> >>
> >> On 30/11/2012, Martin Minka <martin.minka at gmail.com> wrote:
> >> > I want to keep only 1 fact with id=="aaaa". But this is not working:
> >> >
> >> > rule "leave only one"
> >> > when
> >> >     $removeUs : java.util.List(size>1)
> >> >         from collect(Fact(id=="aaaa")
> >> > then
> >> >     size = $removeUs.size();
> >> >     for (int i=1; i < size; i++) {
> >> >         retract($removeUs.get(i));
> >> >     }
> >> > end
> >> >
> >> _______________________________________________
> >> rules-users mailing list
> >> rules-users at lists.jboss.org
> >> https://lists.jboss.org/mailman/listinfo/rules-users
> >>
> >
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