[rules-users] How to access Guvnor Rules based on versions from Java?

[Jervis Liu]

On 2012/10/19 17:56, Sai Nadh wrote:
> hi,
>
> if i have package with name my package in drools guvnor
>
>  In that i have some rules(business rule assets), with name testrule1, 
> testrule2
>
> if i want to access those rules to my java application
>
> i have written resource url in changeset like
>
> <resource 
> source='http://localhost:8080/drools-guvnor/rest/packages/mypackage/source' 
> type='BRL'/>


<resource 
source='http://localhost:8080/drools-guvnor/rest/packages/mypackage/assets/testrule1/source 
<http://localhost:8080/drools-guvnor/rest/packages/mypackage/source>' 
type='BRL'/>

Check the doc for details: 
http://docs.jboss.org/drools/release/5.5.0.Beta1/drools-guvnor-docs/html/ch09.html#d0e3153

>
> but i am getting exceptions..
>
> Exception in thread "main" java.lang.RuntimeException: 
> org.drools.compiler.DroolsParserException: 
> java.lang.IllegalArgumentException: Unable to instantiate service for 
> Class 'org.drools.compiler.BusinessRuleProvider'
>
>
> please help me.. to write correct url in changeset.xml to access those 
> BRL's
>
> thanks
> sai
>
>
> On Fri, Oct 19, 2012 at 2:25 PM, Jervis Liu <jliu at redhat.com 
> <mailto:jliu at redhat.com>> wrote:
>
>     On 2012/10/16 19:47, Ravikiran wrote:
>>     Hi Jarvis,
>>
>>     Thanks for your reply. Looks like i have posted my intension unclearly. To
>>     elaborate bit more, currently i am using Rest API to create KnowledgeBase
>>     from my java client. I have changeset-loans.xml, where my guvnor package
>>     with drl is defined. My java client will this to fire all rules of that
>>     package. In such a case, when i have more one version created for the
>>     package and the rule assets within it, how i can i call specific version
>>     based package along with the drl file to fire all the rule assets belongs to
>>     it? In the same passion, is there any way i can mentioned the rule asset
>>     name in the changeset xml file to fire specific version of rule asset from
>>     java?
>     Yes, it is possible to specify a specific version of asset in
>     changeset. though this is not supported by Change-set editor at
>     the moment, you have to edit the content of change-set xml file
>     manually. For example, below is generated by change-set editor:
>
>
>     <change-set xmlns='http://drools.org/drools-5.0/change-set'
>         xmlns:xs='http://www.w3.org/2001/XMLSchema-instance'
>         xs:schemaLocation='http://drools.org/drools-5.0/change-set
>     http://anonsvn.jboss.org/repos/labs/labs/jbossrules/trunk/drools-api/src/main/resources/change-set-1.0.0.xsd'
>     >
>         <add>
>              <resource  
>     source='http://localhost:8080/drools-guvnor/rest/packages/defaultPackage/assets/sss/source'
>     type='DRL' />
>         </add>
>     </change-set>
>
>     If you want to use a specific version of asset "sss", what you
>     need to do is to modify the source URL, make it pointing to the
>     specific version of the asset source. eg:
>
>              <resource
>     source='http://localhost:8080/drools-guvnor/rest/packages/defaultPackage/assets/sss/versions/2/source'
>     type='DRL' />
>
>     This is to get version 2 of asset "sss" source.
>
>
>     Cheers,
>     Jervis
>
>
>>     I can only get the package or rule asset's metadata using the urls that you
>>     have mentioned in your post. But i can't fire the rules...please suggest if
>>     i am doing something wrong.
>>
>>     changeset-loans.xml
>>     -------------------------
>>     <change-set xmlns='http://drools.org/drools-5.0/change-set'
>>          xmlns:xs='http://www.w3.org/2001/XMLSchema-instance'
>>          xs:schemaLocation='http://drools.org/drools-5.0/change-set
>>         
>>     http://anonsvn.jboss.org/repos/labs/labs/jbossrules/trunk/drools-api/src/main/resources/change-set-1.0.0.xsd'
>>         <add>
>>            <resource
>>           
>>     source='http://localhost:9080/guvnor-5.2.0.Final-tomcat-6.0/org.drools.guvnor.Guvnor/package/loans/loans_demo.drl'
>>            type='DRL' basicAuthentication="enabled" username="admin"
>>     password="admin" />
>>         </add>
>>     </change-set>
>>
>>     Thanks
>>     Ravi
>>
>>
>>
>>     --
>>     View this message in context:http://drools.46999.n3.nabble.com/How-to-access-Guvnor-Rules-based-on-versions-from-Java-tp4020285p4020301.html
>>     Sent from the Drools: User forum mailing list archive at Nabble.com.
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>
>
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>
>
> -- 
> *Regards*
> *SAI BABA NADH*
>
> +91 7411680125
>
> **
>
>
>
>
>
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