5:16 a.m.
Hello,
thanks you all for your support.
I have to announce that I could not recommend to use drools in our project.
This Bug was one of the main reasons for it. - Can hardly belief that this
is still the official stable release...
We now implement a simplified solution for our problem from scratch. It
will of course never have as many features as drools, neither in the
backend nor in the user interface.
Don't want to nag, just want to provide feedback.
Maybe I will have a look again in a year or two.
best wishes
Stefan
2013/4/23 Davide Sottara <dsotty(a)gmail.com>
It is still realistic.. the team is preparing a beta release of
6.x.
When that is done, I hope they will focus on finalizing 5.x..
I am waiting for 5.6.Final myself :)
You may have answered this question before.. could you give a try at
5.5.1-SNAPSHOT?
Thanks for your patience
Davide
On 04/23/2013 01:50 AM, Stefan Schuster wrote:
Hi all,
thanks a lot for your helpful answers.
I'm looking forward to the update to 5.6.0. Is the mentioned time
horizon ("a few days") still realistic? I.e. could you recommend me to
pause the evaluation of drools, instead of downgrading to 5.4.0?
We consider to use drools in a larger project, and I have to
decide whether I recommend drools, or prefer a simpler design developed
from scratch. As far it's an fact that I cannot recommend drools 5.5.0.
What version is reasonable to use for further evaluation?
Stefan
2013/4/19 Wolfgang Laun <wolfgang.laun(a)gmail.com>
> On 18/04/2013, Stefan Schuster <stefan.m.schuster(a)gmail.com> wrote:
> >
> > Please don't misunderstand me, I have a deep respect for the
> developer of
> > such complex systems like DROOLS, and I know from my own code that bugs
> > simply happen. But I wonder why there is still this version without any
> > warning the official release?
> >
>
> Not putting out warnings when some release is known to be broken is a
> rather dark spot on the gloss of Drools. I have urged this before,
> mainly because
> not warning users is a primary cause for them wasting time and effort.
>
> Keep carping...
> Wolfgang
>
>
>
>
> > Is it better to use an older version?
> >
> > best regards
> >
> > Stefan
> >
> >
> >
> >
> > 2013/4/18 Mark Proctor <mproctor(a)codehaus.org>
> >
> >> There are a lot of fixes in the 5.x master. Anyone verified their bugs
> >> against this? I suspect this is fixed in that.
> >>
> >>
> >> Mark
> >> On 18 Apr 2013, at 16:21, Wolfgang Laun <wolfgang.laun(a)gmail.com>
> wrote:
> >>
> >> > Ah, my memory :-)
> >> >
> >> > http://lists.jboss.org/pipermail/rules-dev/2013-January/004338.html
> >> >
> >> > Mark has promised a fix for 3 months ago, but of course 5.5.0 remains
> >> broken.
> >> >
> >> > -W
> >> >
> >> > On 18/04/2013, Stefan Schuster <stefan.m.schuster(a)gmail.com>
wrote:
> >> >> Hi, thank you for your response.
> >> >> I'm using the latest stable release of Drools 5.5.0 final.
> >> >> Eclipse is Juno Service Release 2.
> >> >>
> >> >> Can you confirm, that the order 1,2,3 is the expected result?
> >> >>
> >> >> If this is a known bug, is there some kind of jira or bugzilla
numer
> >> >> assigned to it?
> >> >>
> >> >>
> >> >>
> >> >> 2013/4/18 Wolfgang Laun <wolfgang.laun(a)gmail.com>
> >> >>
> >> >>> IIRC, this was a bug one or two minor versions ago. What
version
> are
> >> you
> >> >>> using?
> >> >>> -W
> >> >>>
> >> >>> On 18/04/2013, Stefan Schuster
<stefan.m.schuster(a)gmail.com>
> wrote:
> >> >>>> For the sake of completeness, here is also the RuleRunner
class
> >> >>>> used
> >> >>>> in
> >> >>>> this example:
> >> >>>>
> >> >>>> package org.drools.tutorials.banking;
> >> >>>>
> >> >>>> import java.util.Collection;
> >> >>>>
> >> >>>> import org.drools.KnowledgeBase;
> >> >>>> import org.drools.KnowledgeBaseFactory;
> >> >>>> import org.drools.builder.KnowledgeBuilder;
> >> >>>> import org.drools.builder.KnowledgeBuilderFactory;
> >> >>>> import org.drools.builder.ResourceType;
> >> >>>> import org.drools.definition.KnowledgePackage;
> >> >>>> import org.drools.io.ResourceFactory;
> >> >>>> import org.drools.runtime.StatefulKnowledgeSession;
> >> >>>>
> >> >>>> public class RuleRunner {
> >> >>>>
> >> >>>> public RuleRunner() {
> >> >>>> }
> >> >>>>
> >> >>>> public void runRules(String[] rules,
> >> >>>> Object[] facts) {
> >> >>>>
> >> >>>> KnowledgeBase kbase =
> >> >>>> KnowledgeBaseFactory.newKnowledgeBase();
> >> >>>> KnowledgeBuilder kbuilder =
> >> >>>> KnowledgeBuilderFactory.newKnowledgeBuilder();
> >> >>>>
> >> >>>> for ( int i = 0; i < rules.length; i++ ) {
> >> >>>> String ruleFile = rules[i];
> >> >>>> System.out.println( "Loading file: " +
ruleFile );
> >> >>>> kbuilder.add(
ResourceFactory.newClassPathResource(
> >> >>>> ruleFile,
> >> >>>>
> >> >>>> RuleRunner.class ),
> >> >>>> ResourceType.DRL );
> >> >>>> }
> >> >>>>
> >> >>>> Collection<KnowledgePackage> pkgs =
> >> >>>> kbuilder.getKnowledgePackages();
> >> >>>> kbase.addKnowledgePackages( pkgs );
> >> >>>> StatefulKnowledgeSession ksession =
> >> >>>> kbase.newStatefulKnowledgeSession();
> >> >>>>
> >> >>>> for ( int i = 0; i < facts.length; i++ ) {
> >> >>>> Object fact = facts[i];
> >> >>>> System.out.println( "Inserting fact: "
+ fact );
> >> >>>> ksession.insert( fact );
> >> >>>> }
> >> >>>>
> >> >>>> ksession.fireAllRules();
> >> >>>> }
> >> >>>> }
> >> >>>>
> >> >>>>
> >> >>>> 2013/4/18 Stefan Schuster
<stefan.m.schuster(a)gmail.com>
> >> >>>>
> >> >>>>> Hello,
> >> >>>>>
> >> >>>>> I have a problem with the banking tutorial number 3,
which is
> part
> >> >>>>> of
> >> >>> the
> >> >>>>> examples of drools expert.
> >> >>>>> It simply adds some Numbers as facts, and retracts them
in an
> >> >>>>> increasing
> >> >>>>> order.
> >> >>>>>
> >> >>>>> It is very short, therefore I post the whole Code:
> >> >>>>>
> >> >>>>>
> >> >>>>> BankingExample3.java
> >> >>>>> _________________________________________________
> >> >>>>> package org.drools.tutorials.banking;
> >> >>>>>
> >> >>>>> public class BankingExample3 {
> >> >>>>> public static void main(String[] args) {
> >> >>>>> Number[] numbers = new Number[] {wrap(3),
wrap(1),
> wrap(4),
> >> >>>>> wrap(1), wrap(5)};
> >> >>>>> new RuleRunner().runRules( new String[] {
"Example3.drl"
> },
> >> >>>>> numbers );
> >> >>>>> }
> >> >>>>>
> >> >>>>> private static Integer wrap(int i) {
> >> >>>>> return new Integer(i);
> >> >>>>> }
> >> >>>>> }
> >> >>>>> _________________________________________________
> >> >>>>>
> >> >>>>>
> >> >>>>>
> >> >>>>> Example3.drl:
> >> >>>>> _________________________________________________
> >> >>>>> package org.drools.tutorials.banking
> >> >>>>>
> >> >>>>> rule "Rule 01"
> >> >>>>> when
> >> >>>>> $number : Number()
> >> >>>>> not Number( intValue < $number.intValue )
> >> >>>>> then
> >> >>>>> System.out.println("Number found with
value: " +
> >> >>>>> $number.intValue() );
> >> >>>>> retract( $number );
> >> >>>>> end
> >> >>>>> _________________________________________________
> >> >>>>>
> >> >>>>>
> >> >>>>> Output:
> >> >>>>> _________________________________________________
> >> >>>>> Loading file: Example3.drl
> >> >>>>> Inserting fact: 3
> >> >>>>> Inserting fact: 1
> >> >>>>> Inserting fact: 4
> >> >>>>> Inserting fact: 1
> >> >>>>> Inserting fact: 5
> >> >>>>> Number found with value: 1
> >> >>>>> Number found with value: 1
> >> >>>>> Number found with value: 3
> >> >>>>> Number found with value: 4
> >> >>>>> Number found with value: 5
> >> >>>>> _________________________________________________
> >> >>>>>
> >> >>>>>
> >> >>>>> that seams absolute logically to me.
> >> >>>>> But now I alter the Numbers in the Java-Part:
> >> >>>>> Number[] numbers = new Number[] {wrap(3), wrap(1),
wrap(2)};
> >> >>>>>
> >> >>>>> and the output destroys everything I thought I
understood:
> >> >>>>> Loading file: Example3.drl
> >> >>>>> Inserting fact: 3
> >> >>>>> Inserting fact: 1
> >> >>>>> Inserting fact: 2
> >> >>>>> Number found with value: 1
> >> >>>>> Number found with value: 3
> >> >>>>> Number found with value: 2
> >> >>>>>
> >> >>>>>
> >> >>>>> Can someone reproduce this behavior?? It seams
absolutely
> strange
> >> >>>>> to
> >> >>> me.
> >> >>>>> I would have expected the order 1,2,3. Any
explanations?
> >> >>>>>
> >> >>>>> Thanks in advance for helping me!
> >> >>>>>
> >> >>>>>
> >> >>>>>
> >> >>>>
> >> >>> _______________________________________________
> >> >>> rules-users mailing list
> >> >>> rules-users(a)lists.jboss.org
> >> >>> https://lists.jboss.org/mailman/listinfo/rules-users
> >> >>>
> >> >>
> >> > _______________________________________________
> >> > rules-users mailing list
> >> > rules-users(a)lists.jboss.org
> >> > https://lists.jboss.org/mailman/listinfo/rules-users
> >>
> >>
> >> _______________________________________________
> >> rules-users mailing list
> >> rules-users(a)lists.jboss.org
> >> https://lists.jboss.org/mailman/listinfo/rules-users
> >>
> >
> _______________________________________________
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