[rules-users] Drools server and knowledge agent functionality

[Ross H]

Have created an issue in jira: https://issues.jboss.org/browse/JBRULES-2962

Will add a small test case shortly.

Regards Ross

2011/4/18 Esteban Aliverti <esteban.aliverti at gmail.com>

> Yes, your approach is also ok. I was about to create the servlet I have
> mentioned. Now I'm wondering which one is the best approach.
> About reloading rules with declared types, yes, there is a known issue.
> They are added multiple times in the classloader leading to
> ClassCastExceptions. We are working on a solution. It would be nice if you
> could file an issue in Jboss' jira (https://jira.jboss.org/) to keep track
> about the progress.
>
> Best Regards,
>
> XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
>
> Esteban Aliverti
> - Developer @ http://www.plugtree.com
> - Blog @ http://ilesteban.wordpress.com
>
>
> 2011/4/17 HALL, Ross <Ross.HALL at suncorp.com.au>
>
>>  Hi Esteban,
>>
>>
>>
>> To start up the notifier and scanner service I modified the Drools-Server
>> ResourceChangeScannerBeanFactory as documented in this post:
>>
>>
>>
>>
>> http://drools.46999.n3.nabble.com/drools-server-resource-change-scanner-notifier-td2649325.html
>>
>>
>>
>> I’m just wondering whether this is the right approach or if I should
>> consider a Servlet as you have suggested. Did you have a particular reason
>> for this approach?
>>
>>
>>
>> BTW another caveat is that Declared Facts will not rebuild correctly, they
>> just seem to get lost although other rules not dependent on any declared
>> facts will fire normally. Using POJO’s is fine. Using new-instance =true
>> will throw an error when a merge of the rules is attempted. I think this is
>> a know issue with the rule agent.
>>
>>
>>
>> Regards Ross
>>
>>
>>
>> *From:* rules-users-bounces at lists.jboss.org [mailto:
>> rules-users-bounces at lists.jboss.org] *On Behalf Of *Esteban Aliverti
>> *Sent:* Friday, 15 April 2011 10:40 PM
>> *To:* Rules Users List
>> *Subject:* Re: [rules-users] Drools server and knowledge agent
>> functionality
>>
>>
>>
>> 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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