3:29 p.m.
I guess if you modify the business objects a bit (in quite weird way - I
think it would be rather a shortcut than a solution) you can implement this
kind of logic: you need to swap property (zipcode, age, etc) and 'property
ownner' (Person) objects, so that you'll have:
Person (id)
ZipCode (id, code)
Age (id, age)
Etc
In this case you should be able to write:
Rule X
When
$p: Person($id: id)
(
ZipCode(id == $id, code == "23456")
or ZipCode(id == $id, code == "68590")
)
And
(
Age(id == $id, age < 25)
Or Age(id == $id, age > 34)
)
Then
// do smth using $p
End
Or smth along those lines... Would that work?.....
Vlad
-----Original Message-----
From: rules-users-bounces(a)lists.jboss.org
[mailto:rules-users-bounces@lists.jboss.org] On Behalf Of Bill Zhang
Sent: 19 February 2007 09:14
To: Rules Users List
Subject: Re: [rules-users] Convert logic to DRL rules
Hi Alex,
Thank you for confirming this. Writing such a builder may take us a
lot of time because our business user is used to free style
Pascal-like authoring using quite complex logic. For example,
IF
(
(
(Person.Age > 35 OR Person.Age < 25) AND
(Person.ZipCode =23546 or Person.ZipCode = 68590)
)
and
(
(Person.LastOrderPrice > 300 OR
(Person.TotalOrderNumber > 2)
)
)
OR
(
(
(Person.LastOrderCategory in ("098", "109") ) AND
(Person.ZipCode =74567 or Person.ZipCode = 23765)
)
and
(
(Person.LastOrderPrice > 1000 OR
(Person.TotalOrderNumber > 1)
)
)
...
THEN Person.Status = "KT";
Before I set out to write the builder, I would like to know whether
the new syntax can handle the above logic? Also, where can I find
document for the new syntax?
I am also trying to find some existing open source Java library to
"flatten out" these complex logic - to break these complex logic to
atomic ones that can be handled by Drools. Do you have any
recommendation?
Thanks a lot for your help.
Bill Y.
On 2/19/07, Alexander Varakin <avarakin(a)optonline.net> wrote:
We built a Rule Builder which creates drl with all possible
combinations. In any case, drl syntax is not exactly business user
friendly, so having such builder is not a bad idea.
Simple Rule Builder can be implemented as an Excel spreadsheet, which
can be easily parsed using POI library and then drl file produced.
Steven Williams wrote:
> Hi Bill,
>
> To implement your rules in 3.0.5 you would need to implement a rule
> for each combination of age and zipCode.
>
> $a : Person(age > 35 zipCode == 23546)
> then
> $a.setStatus("KT");
>
> $a : Person(age < 25, zipCode == 23546 )
> then
> $a.setStatus("KT");
>
> $a : Person(age > 35, zipCode == 68590)
> then
> $a.setStatus("KT");
>
> etc..
>
> Steve
>
> On 2/19/07, *Bill Zhang* <billzhang2006(a)gmail.com
> <mailto:billzhang2006@gmail.com>> wrote:
>
> So Alex, if I only want to use the old syntax that is in production,
> there is no way to implement my seemingly simple logic conditioning?
>
> Thanks for your help.
>
> On 2/18/07, Alexander Varakin < avarakin(a)optonline.net
> <mailto:avarakin@optonline.net>> wrote:
> > As far as I know this syntax is new and is available in SVN
> only, you
> > will have to wait till 3.1 is released or take source from SVN
> and build it.
> >
> > Bill Zhang wrote:
> > > Hi Steven,
> > >
> > > Thank you very much for your help. Really appreciate.
> > >
> > > I still got the same error, Unexpected token '|'. I did not
> see "|" in
> > > the document, only saw "||", which is supposed to be used
with
> > > columns.
> > >
> > > Ye
> > >
> > > On 2/18/07, Steven Williams < stevenw(a)objectconsulting.com.au
> <mailto:stevenw@objectconsulting.com.au>> wrote:
> > >> Hi Bill,
> > >>
> > >> I think it should be:
> > >>
> > >> $a : Person(age > 35 | < 25, zipCode == 23546 | == 68590)
> > >>
> > >> Edson, Mark or Michael can probably confirm or correct the
> above syntax.
> > >>
> > >> Make sure you are running of the latest trunk.
> > >>
> > >> cheers
> > >> Steve
> > >>
> > >>
> > >> On 2/18/07, Bill Zhang <billzhang2006(a)gmail.com
> <mailto:billzhang2006@gmail.com>> wrote:
> > >> >
> > >> > I tried:
> > >> >
> > >> > $a : Person(age > 35 || age < 25, zipCode == 23546 ||
==
68590)
> > >> >
> > >> > Errors:
> > >> > org.drools.rule.InvalidRulePackage : unknown:39:30
> > >> Unexpected token '||'
> > >> > unknown:39:40 mismatched token:
> > >> [@246,1040:1041='<=',<47>,39:40];
> > >> > expecting type '('
> > >> > unknown:39:92 mismatched token:
> > >> [@258,1092:1092='<',<46>,39:92];
> > >> > expecting type '('
> > >> >
> > >> > I also tried
> > >> >
> > >> > $a : Person(age > 35 | age < 25, zipCode == 23546 | ==
68590)
> > >> >
> > >> > Pretty much the same error.
> > >> >
> > >> > Based on the document, "||" is only valid for
columns...
> > >> >
> > >> >
> > >> > On 2/17/07, Bill Zhang <billzhang2006(a)gmail.com
> <mailto:billzhang2006@gmail.com>> wrote:
> > >> > > Thank you Steve. But I got syntax error using the
following.
> > >> > >
> > >> > > On 2/17/07, Steven Williams
> <stevenw(a)objectconsulting.com.au
> <mailto:stevenw@objectconsulting.com.au>> wrote:
> > >> > > > In trunk I think you can use connective
constraints:
> > >> > > >
> > >> > > > $a : Person(age > 35 | < 25, zipCode == 23546
| == 68590)
> > >> > > > then
> > >> > > > $a.setStatus("KT");
> > >> > > >
> > >> > > >
> > >> > > >
> > >> > > >
> > >> > > > On 2/18/07, Bill Zhang <
billzhang2006(a)gmail.com
> <mailto:billzhang2006@gmail.com>> wrote:
> > >> > > > >
> > >> > > > > Hello,
> > >> > > > >
> > >> > > > > I am a new Drools user trying to convert the
> following simple
> > >> logic
> > >> into
> > >> > > > DRL:
> > >> > > > >
> > >> > > > > IF (Person.Age > 35 OR Person.Age < 25)
AND
> (Person.ZipCode =
> > >> 23546
> > >> or
> > >> > > > > Person.ZipCode = 68590)
> > >> > > > > THEN
> > >> > > > > Person.Status = "KT";
> > >> > > > >
> > >> > > > > I found that it is not easy to convert the
above
> logic into
> > >> ONE DRL
> > >> rule.
> > >> > > > >
> > >> > > > > I tried something like this
> > >> > > > >
> > >> > > > > when
> > >> > > > > $a: Person(age>35) or Person (age<25)
> > >> > > > > $b: Person(Zipcode==23456) or Person (ZipCode
== 68590)
> > >> > > > > $c: $a and $b
> > >> > > > > Then
> > >> > > > > $c.setStatus("KT")
> > >> > > > >
> > >> > > > > But looks like I can not use
> > >> > > > > $c: $a and $b
> > >> > > > > becaue in Drools, you can only bind variable
to
> column, not
> > >> to other
> > >> > > > varaibles.
> > >> > > > >
> > >> > > > > Please advise how to do this. I would imagine
this
> should be
> > >> quite
> > >> > > > > simple, maybe I missed something quite
obvious.
> > >> > > > >
> > >> > > > > I know that I can write custom Java method to
do
> this, but if
> > >> I do
> > >> > > > > that, I suppose I lose the power of RETEOO
pattern
> matching
> > >> (pattern
> > >> > > > resuing,
> > >> > > > > etc.). So I prefer not to do that.
> > >> > > > >
> > >> > > > > I also understand I can break the above logic
into 4
> rules
> > >> and that
> > >> > > > > would be quite easy, but our business user is
not used
to
> > >> think in
> > >> > > > > that way. Also, we have more complex logic
than the
> above. So
> > >> what I
> > >> > > > > want is to see if there is a way to convert
this
> > >> > > > > kind of logic in ONE DRL rule.
> > >> > > > >
> > >> > > > > Thanks in advance.
> > >> > > > >
> > >> > > > > Bill
> > >> > > > >
_______________________________________________
> > >> > > > > rules-users mailing list
> > >> > > > > rules-users(a)lists.jboss.org
> <mailto:rules-users@lists.jboss.org>
> > >> > > > >
> > >> https://lists.jboss.org/mailman/listinfo/rules-users
> > >> > > > >
> > >> > > >
> > >> > > >
> > >> > > >
> > >> > > > --
> > >> > > > Steven Williams
> > >> > > >
> > >> > > > Supervising Consultant
> > >> > > >
> > >> > > > Object Consulting
> > >> > > > Office: 8615 4500 Mob: 0439 898 668 Fax: 8615 4501
> > >> > > > stevenw(a)objectconsulting.com.au
> <mailto:stevenw@objectconsulting.com.au>
> > >> > > > www.objectconsulting.com.au
> <http://www.objectconsulting.com.au>
> > >> > > >
> > >> > > > consulting | development | training | support
> > >> > > > our experience makes the difference
> > >> > > > _______________________________________________
> > >> > > > rules-users mailing list
> > >> > > > rules-users(a)lists.jboss.org
> <mailto:rules-users@lists.jboss.org>
> > >> > > >
https://lists.jboss.org/mailman/listinfo/rules-users
> > >> > > >
> > >> > > >
> > >> > >
> > >> > _______________________________________________
> > >> > rules-users mailing list
> > >> > rules-users(a)lists.jboss.org
> <mailto:rules-users@lists.jboss.org>
> > >> > https://lists.jboss.org/mailman/listinfo/rules-users
> > >> >
> > >>
> > >>
> > >>
> > >> --
> > >> Steven Williams
> > >>
> > >> Supervising Consultant
> > >>
> > >> Object Consulting
> > >> Office: 8615 4500 Mob: 0439 898 668 Fax: 8615 4501
> > >> stevenw(a)objectconsulting.com.au
> <mailto:stevenw@objectconsulting.com.au>
> > >> www.objectconsulting.com.au
<http://www.objectconsulting.com.au>
> > >>
> > >> consulting | development | training | support
> > >> our experience makes the difference
> > >> _______________________________________________
> > >> rules-users mailing list
> > >> rules-users(a)lists.jboss.org
<mailto:rules-users@lists.jboss.org>
> > >>
https://lists.jboss.org/mailman/listinfo/rules-users
> > >>
> > >>
> > > _______________________________________________
> > > rules-users mailing list
> > > rules-users(a)lists.jboss.org
<mailto:rules-users@lists.jboss.org>
> > > https://lists.jboss.org/mailman/listinfo/rules-users
> <https://lists.jboss.org/mailman/listinfo/rules-users>
> > >
> >
> > _______________________________________________
> > rules-users mailing list
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>
>
>
>
> --
> Steven Williams
>
> Supervising Consultant
>
> Object Consulting
> Office: 8615 4500 Mob: 0439 898 668 Fax: 8615 4501
> stevenw(a)objectconsulting.com.au <mailto:stevenw@objectconsulting.com.au>
> www.objectconsulting.com.au <http://www.objectconsulting.com.au>
>
> consulting | development | training | support
> our experience makes the difference
> ------------------------------------------------------------------------
>
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