[rules-users] Drools server and knowledge agent functionality

[Esteban Aliverti]

Hi.
You can configure a Knowledge Agent in Drools-Server using spring. You have
to declare it in knowledge-services.xml config file. You need to do
something like:

<drools:kagent id="kagent1" kbase="kbase1" new-instance="false">
 <drools:resources>
    <drools:resource  type="DRL"
source="file:/some/path/to/apache-tomcat-7.0.6/webapps/drools-server/WEB-INF/classes/test.drl"/>
            <drools:resource  type="PKG" source="
http://somehost:8080/droolg-guvnor/.../LATEST"/>
         </drools:resources>
</drools:kagent>

For configure the scan interval, you can use:

<drools:resource-change-scanner id="s1" interval="5" />

There are, though, some caveats:

   - If you are deploying drools-server in tomcat, then you can't use
   classpath resources in the kagent. I have reported this problem today.
   - drools-server doesn't start ResourceChangeNotifierService
   nor ResourceChangeScannerService automatically. You need to hack some way to
   invoke ResourceFactory.getResourceChangeNotifierService().start();
   and ResourceFactory.getResourceChangeScannerService().start();. I was
   thinking in a Servlet that calls these methods in its init() method.

Best Regards,

XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

Esteban Aliverti
- Developer @ http://www.plugtree.com
- Blog @ http://ilesteban.wordpress.com


2011/4/15 Manuel Ortiz <manuel.ortizramos at gmail.com>

> Hello everybody:
>
> I am taking a look at Drools Integration documentation to understand how
> Drools server works and how can be used, and have a doubt concerning, let's
> say... 'KnowledgeAgent capabilities'. Does Drools server support on the fly
> rule updating as when using KnowledgeAgent to create KnowledgeBase objects?
> If it does, where can be configured 'KnowledgeAgent related' properties such
> as newInstance or resource scanner interval?
>
> Thank you in advance for your time.
>
> Kind regards,
>
> Manuel Ortiz.
>
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