9:37 p.m.
Hi, I only started using Guvnor recently. Just wonder if anyone could clarify
one question. A good benefit of using Guvnor to manage rules is to decouple
the rules from application code. However, the RHS of some rules may involve
actions related to other logic classes in application. For example, there's
a rule that sends out an email in the action, which uses methods defined
elsewhere in the project, and these should not be known by Guvnor. So my
solution for that is, create a declarative model containing an "Email" fact
in Guvnor. When the rule fires, logical insert an "Email" object. And back
in java code I'll try to check if there's an "Email" object created
after
the fireAllRules() call. If there is, call my email sending method.
Is this the right way? If so, what's the best way to look for the newly
created "Email" object in Java code? There are methods to getFactHandles()
and getObjects(). Are they the area to look for?
Any comment will be highly appreciated!
Yu
--
View this message in context:
http://drools.46999.n3.nabble.com/Dummy-question-from-a-new-comer-tp32481...
Sent from the Drools: User forum mailing list archive at Nabble.com.
2:07 a.m.
What you can do is to define something like a "Service Layer" to use in the
RHS of your rules. This layer could be composed of interfaces like
EmailService, SystemXService, SMSService, and so on. In guvnor, you only
need to upload the jar containing just the interfaces (of course you will
also need your Fact classes as well).
In your rules, you can define globals for these services. Then, in the RHS
of your rules, you can use these services.
For example:
global com.some.package.EmailService emailService;
rule "A"
when
$s: Something()
then
emailService.sendEmail($s);
end
When you want to run these rules (that is when you create a ksession from
the kbase where they are), you need to provide a value for each of your
globals. This means that in your application you will need to have an
implementation for each of your services (of course).
Best Regards,
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
Esteban Aliverti
- Developer @ http://www.plugtree.com
- Blog @ http://ilesteban.wordpress.com
On Fri, Aug 12, 2011 at 4:37 AM, cross.cy <cross.cy.work(a)gmail.com> wrote:
Hi, I only started using Guvnor recently. Just wonder if anyone
could
clarify
one question. A good benefit of using Guvnor to manage rules is to decouple
the rules from application code. However, the RHS of some rules may involve
actions related to other logic classes in application. For example, there's
a rule that sends out an email in the action, which uses methods defined
elsewhere in the project, and these should not be known by Guvnor. So my
solution for that is, create a declarative model containing an "Email" fact
in Guvnor. When the rule fires, logical insert an "Email" object. And back
in java code I'll try to check if there's an "Email" object created
after
the fireAllRules() call. If there is, call my email sending method.
Is this the right way? If so, what's the best way to look for the newly
created "Email" object in Java code? There are methods to getFactHandles()
and getObjects(). Are they the area to look for?
Any comment will be highly appreciated!
Yu
--
View this message in context:
http://drools.46999.n3.nabble.com/Dummy-question-from-a-new-comer-tp32481...
Sent from the Drools: User forum mailing list archive at Nabble.com.
_______________________________________________
rules-users mailing list
rules-users(a)lists.jboss.org
https://lists.jboss.org/mailman/listinfo/rules-users
9:19 a.m.
Hi Esteban, thanks for the reply. I created the "Service Layer" in my project
containing the interfaces. Then I packaged them into a jar file and uploaded
to Guvnor. Guvnor put it into a model and then I promote it to Global.
However, when I write a rule, either business rule or technical rule in
Guvnor, it seems like the starting point is always "When". I didn't find a
place to put the "global com.some.package.EmailService emailService"
declaration before the rule. I tried to use EmailService, which is the model
name in the Global area directly in RHS of my rule but Guvnor threw out
error on that. Could you please indicate how this can be done in Guvnor?
Thanks and best regards
Yu
--
View this message in context:
http://drools.46999.n3.nabble.com/Dummy-question-from-a-new-comer-tp32481...
Sent from the Drools: User forum mailing list archive at Nabble.com.
9:26 a.m.
You can set globals in the "Package configuration" screen within Guvnor;
i.e. click on the package in the tree-view.
With 5.2 (and before) the package configuration screen appears in the main
Guvnor window, with 5.3.Beta1 you'll need to additionally click on the "View
package configuration" button.
With kind regards,
Mike
On 13 August 2011 15:19, cross.cy <cross.cy.work(a)gmail.com> wrote:"P
Hi Esteban, thanks for the reply. I created the "Service
Layer" in my
project
containing the interfaces. Then I packaged them into a jar file and
uploaded
to Guvnor. Guvnor put it into a model and then I promote it to Global.
However, when I write a rule, either business rule or technical rule in
Guvnor, it seems like the starting point is always "When". I didn't find a
place to put the "global com.some.package.EmailService emailService"
declaration before the rule. I tried to use EmailService, which is the
model
name in the Global area directly in RHS of my rule but Guvnor threw out
error on that. Could you please indicate how this can be done in Guvnor?
Thanks and best regards
Yu
--
View this message in context:
http://drools.46999.n3.nabble.com/Dummy-question-from-a-new-comer-tp32481...
Sent from the Drools: User forum mailing list archive at Nabble.com.
_______________________________________________
rules-users mailing list
rules-users(a)lists.jboss.org
https://lists.jboss.org/mailman/listinfo/rules-users
3:27 a.m.
That's right, globals are not defined in each rule but in the package
configuration window.
Best Regards,
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
Esteban Aliverti
- Developer @ http://www.plugtree.com
- Blog @ http://ilesteban.wordpress.com
2011/8/13 Michael Anstis <michael.anstis(a)gmail.com>
You can set globals in the "Package configuration" screen
within Guvnor;
i.e. click on the package in the tree-view.
With 5.2 (and before) the package configuration screen appears in the main
Guvnor window, with 5.3.Beta1 you'll need to additionally click on the "View
package configuration" button.
With kind regards,
Mike
On 13 August 2011 15:19, cross.cy <cross.cy.work(a)gmail.com> wrote:"P
Hi Esteban, thanks for the reply. I created the "Service Layer" in my
> project
> containing the interfaces. Then I packaged them into a jar file and
> uploaded
> to Guvnor. Guvnor put it into a model and then I promote it to Global.
> However, when I write a rule, either business rule or technical rule in
> Guvnor, it seems like the starting point is always "When". I didn't
find a
> place to put the "global com.some.package.EmailService emailService"
> declaration before the rule. I tried to use EmailService, which is the
> model
> name in the Global area directly in RHS of my rule but Guvnor threw out
> error on that. Could you please indicate how this can be done in Guvnor?
>
> Thanks and best regards
>
> Yu
>
> --
> View this message in context:
>
http://drools.46999.n3.nabble.com/Dummy-question-from-a-new-comer-tp32481...
> Sent from the Drools: User forum mailing list archive at Nabble.com.
> _______________________________________________
> 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
4853
days inactive
4855
days old
4 comments
3 participants
participants (3)
-
cross.cy -
Esteban Aliverti -
Michael Anstis