5:54 a.m.
Hi all,
I've a number of Excel based decision tables running in my applications. Now
I want to use Guvner to manage these rules. Only importing the xsl files is
not enough. So I have to manually convert the xsl's to a web based decision
table.
I have following questions :
- How do have have to use an eval condition? Whitin the eval I have to call
a piece of java code with a number of parameters coming from the fact model.
- How can I prioritize rules?
- How to use global variables?
Thanks for helping me out.
Kind regards,
Johan Kumps
3:16 p.m.
Hi,
Johan Kumps wrote:
Hi all,
I've a number of Excel based decision tables running in my applications.
Now I want to use Guvner to manage these rules. Only importing the xsl
files is not enough. So I have to manually convert the xsl's to a web
based decision table.
Why do you need to convert them into web based DTs? What's the problem
if you simply upload your xls file? Keep in mind that you also have to
provide (upload) a model used in your DT.
I have following questions :
- How do have have to use an eval condition? Whitin the eval I have to
call a piece of java code with a number of parameters coming from the
fact model.
simply write a snippet in a cell
- How can I prioritize rules?
use the PRIORITY keyword
- How to use global variables?
use the Variables keyword
Details are in the documentation:
https://hudson.jboss.org/hudson/job/drools/lastSuccessfulBuild/artifact/t...
Cheers,
Jarek
Thanks for helping me out.
Kind regards,
Johan Kumps
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3:35 p.m.
Greetings:
Jarek, Mark, Edson, Wolfgang and others are far better at the
specific, in-depth details in Drools than myself. However, I did
notice two things that called attention to themselves in the email
below:
(1) Priority (or specificity) should be used, if at all, sparingly.
More than three levels of priority indicate a possibility that a
procedural program is being done with declarative rules. Five levels
and you definitely need to use Java or C++ or something else rather
than a rulebase.
(2) Global variables in a rulebase, as in Java or C or C++, should be
avoided whenever possible. They are a death trap that has killed off
many an excellent idea. Most vendors point these things out when they
explain how to implement global variables and/or specificity. It's
almost as bad (really close) as using a GOTO in BASIC. Yes, it's
there. But don't use it.
One other thing: External code should never change the value of an
element being used by the rulebase in the condition part of the
rules. If the datum is used by the action element it still MIGHT not
be a good idea and should be used very carefully. However, returning
a boolean is the normal use of external code that does not modify data
- that's about the only SAFE way to use them.
SDG
jco
"This above all: to thine own self be true,
And it must follow, as the night the day,
Thou canst not then be false to any man."
Hamlet, Act 1, Scene III
http://www-tech.mit.edu/Shakespeare/hamlet/hamlet.1.3.html
On Jul 14, 2009, at 3:16 PM, Jaroslaw Kijanowski wrote:
Hi,
Johan Kumps wrote:
> Hi all,
> I've a number of Excel based decision tables running in my
> applications. Now I want to use Guvner to manage these rules. Only
> importing the xsl files is not enough. So I have to manually
> convert the xsl's to a web based decision table.
Why do you need to convert them into web based DTs? What's the
problem if you simply upload your xls file? Keep in mind that you
also have to provide (upload) a model used in your DT.
> I have following questions :
> - How do have have to use an eval condition? Whitin the eval I have
> to call a piece of java code with a number of parameters coming
> from the fact model.
simply write a snippet in a cell
> - How can I prioritize rules?
use the PRIORITY keyword
> - How to use global variables?
use the Variables keyword
Details are in the documentation:
https://hudson.jboss.org/hudson/job/drools/lastSuccessfulBuild/artifact/t...
#d0e5762
Cheers,
Jarek
> Thanks for helping me out.
> Kind regards,
> Johan Kumps
> ------------------------------------------------------------------------
> _______________________________________________
> rules-users mailing list
> rules-users(a)lists.jboss.org
> https://lists.jboss.org/mailman/listinfo/rules-users
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6:30 a.m.
Hi,
2009/7/14 Jaroslaw Kijanowski <kijanowski(a)gmail.com>
Hi,
Johan Kumps wrote:
> Hi all,
> I've a number of Excel based decision tables running in my applications.
> Now I want to use Guvner to manage these rules. Only importing the xsl files
> is not enough. So I have to manually convert the xsl's to a web based
> decision table.
>
Why do you need to convert them into web based DTs? What's the problem if
you simply upload your xls file? Keep in mind that you also have to provide
(upload) a model used in your DT.
>>I want to convert my excel decision table to enable busines
users to
update the rules when neccessary.
I have following questions :
> - How do have have to use an eval condition? Whitin the eval I have to
> call a piece of java code with a number of parameters coming from the fact
> model.
>
simply write a snippet in a cell
>>> In Govnor?
- How can I prioritize rules?
>
use the PRIORITY keyword
>>> In Govnor?
>
> - How to use global variables?
>
use the Variables keyword >>> In Govnor?
Details are in the documentation:
https://hudson.jboss.org/hudson/job/drools/lastSuccessfulBuild/artifact/t...
>>> This link is not working...
Cheers,
Jarek
Thanks for helping me out.
> Kind regards,
> Johan Kumps
>
>
> ------------------------------------------------------------------------
>
> _______________________________________________
> rules-users mailing list
> rules-users(a)lists.jboss.org
> https://lists.jboss.org/mailman/listinfo/rules-users
>
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7:37 a.m.
Johan Kumps wrote:
Hi,
Johan Kumps wrote:
Hi all,
I've a number of Excel based decision tables running in my
applications. Now I want to use Guvner to manage these rules.
Only importing the xsl files is not enough. So I have to
manually convert the xsl's to a web based decision table.
Why do you need to convert them into web based DTs? What's the
problem if you simply upload your xls file? Keep in mind that you
also have to provide (upload) a model used in your DT.
>>>I want to convert my excel decision table to enable busines users to
update the rules when neccessary.
I see, and I guess, it's not possible for those users to update rules in
OpenOffice/Excel and upload them to Guvnor? See my answers below, but
they won't satisfy you ;)
I have following questions :
- How do have have to use an eval condition? Whitin the eval I
have to call a piece of java code with a number of parameters
coming from the fact model.
simply write a snippet in a cell
>>> In Govnor?
AFAICT that's not possible in web based DTs. Would need to be done as
part of some 'free form drl' I guess...
- How can I prioritize rules?
use the PRIORITY keyword
>>> In Govnor?
Yep, in Guvnor, this attribute is called salience (available from the
options section).
- How to use global variables?
use the Variables keyword
>>> In Govnor?
Globals are still available, but the use of them is quite limited (you
can't add results to a java.util.List for example).
Details are in the documentation:
https://hudson.jboss.org/hudson/job/drools/lastSuccessfulBuild/artifact/t...
>>> This link is not working...
Strange, works for me.
Cheers,
Jarek
Thanks for helping me out.
Kind regards,
Johan Kumps
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8:55 a.m.
Hi,
Just to make sure. I would like to migrate the attached excel decision table
to Guvnor. Can you make a suggestion? Migrate or not migrate based on the
current possibilities/features of Guvnor.
Kind regards and thanks in advance.
Johan,
2009/7/15 Jaroslaw Kijanowski <kijanowski(a)gmail.com>
Johan Kumps wrote:
> Hi,
> Johan Kumps wrote:
>
> Hi all,
> I've a number of Excel based decision tables running in my
> applications. Now I want to use Guvner to manage these rules.
> Only importing the xsl files is not enough. So I have to
> manually convert the xsl's to a web based decision table.
>
>
> Why do you need to convert them into web based DTs? What's the
> problem if you simply upload your xls file? Keep in mind that you
> also have to provide (upload) a model used in your DT.
> >>>I want to convert my excel decision table to enable busines users to
> update the rules when neccessary.
>
I see, and I guess, it's not possible for those users to update rules in
OpenOffice/Excel and upload them to Guvnor? See my answers below, but they
won't satisfy you ;)
I have following questions :
> - How do have have to use an eval condition? Whitin the eval I
> have to call a piece of java code with a number of parameters
> coming from the fact model.
>
>
> simply write a snippet in a cell
>
>
> >>> In Govnor?
>
AFAICT that's not possible in web based DTs. Would need to be done as part
of some 'free form drl' I guess...
> - How can I prioritize rules?
>
>
> use the PRIORITY keyword
>
> >>> In Govnor?
>
Yep, in Guvnor, this attribute is called salience (available from the
options section).
- How to use global variables?
>
>
> use the Variables keyword
>
>
> >>> In Govnor?
>
Globals are still available, but the use of them is quite limited (you
can't add results to a java.util.List for example).
>
>
> Details are in the documentation:
>
>
https://hudson.jboss.org/hudson/job/drools/lastSuccessfulBuild/artifact/t...
>
> >>> This link is not working...
>
Strange, works for me.
>
>
> Cheers,
> Jarek
>
> Thanks for helping me out.
> Kind regards,
> Johan Kumps
>
>
>
> ------------------------------------------------------------------------
>
> _______________________________________________
> 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
>
>
>
> ------------------------------------------------------------------------
>
> _______________________________________________
> rules-users mailing list
> rules-users(a)lists.jboss.org
> https://lists.jboss.org/mailman/listinfo/rules-users
>
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5 comments
3 participants
participants (3)
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James Owen -
Jaroslaw Kijanowski -
Johan Kumps