[rules-users] Dynamic Rules and Eval

[rrdh]

Ah, thanks for letting me know! I'll try an earlier version then.


On Sun, Jul 14, 2013 at 8:54 PM, Wolfgang Laun <wolfgang.laun at gmail.com>wrote:

> It's a bug, possibly a regression from 5.2.0 that has been in 5.3.0,
> 5.4.0 and is still in  5.5.0.
>
> It should be very simple to add http://codetidy.com/6206/ as a test
> case so that this will be fixed.
>
> -W
>
>
> On 14/07/2013, Wolfgang Laun <wolfgang.laun at gmail.com> wrote:
> > Which Drools version do you use?
> >
> > On 14/07/2013, k <rrdh at gmx.net> wrote:
> >> Hi,
> >> basically it's the same problem this guy had
> >>
> http://stackoverflow.com/questions/11485122/non-template-dynamic-rules-in-drools
> >> <
> http://stackoverflow.com/questions/11485122/non-template-dynamic-rules-in-drools
> >
> >>
> >> , but the links in that question don't work.
> >>
> >> I'd like to dynamically add rules to a running session, but can use
> >> 'eval'
> >> only in the very first one. If I add a second rule like the following,
> it
> >> won't execute:
> >>
> >> ---
> >>
> >> String test2 =
> >>   "\nrule id4" +
> >>   "\nwhen" +
> >>   "\neval(0 == 0)" + // if this eval is removed, "done2" is inserted
> >>   "\nthen" +
> >>   "\ninsertLogical( \"done2\" );" +
> >>   "\nend";
> >>
> >> kbuilder.add(ResourceFactory.newByteArrayResource(test2.getBytes()),
> >> ResourceType.DRL);
> >>
> session.getKnowledgeBase().addKnowledgePackages(kbuilder.getKnowledgePackages());
> >>
> >> fired = session.fireAllRules();
> >> System.out.println(fired); // 0
> >> effects = session.getObjects();
> >> assertTrue("fired", effects.contains("done2")); // fails
> >>
> >> ---
> >>
> >> You can see the complete Test at http://codetidy.com/6206/
> >>
> >> I'm also not sure if this is the correct way to dynamically add rules,
> so
> >> please let me know, if there's a better way to add rules from strings.
> >>
> >> How can I dynamically add new rules to a running session and still use
> >> eval?
> >>
> >>
> >>
> >> --
> >> View this message in context:
> >> http://drools.46999.n3.nabble.com/Dynamic-Rules-and-Eval-tp4024908.html
> >> Sent from the Drools: User forum mailing list archive at Nabble.com.
> >> _______________________________________________
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> >> https://lists.jboss.org/mailman/listinfo/rules-users
> >>
> >
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