[rules-dev] KnowledgeAgent: Unable to find implementation for BusinessRuleProvider

[Hugo Koblmueller]

hmmm, understood, but it doesn't really solve my basic problem, which is,
that in our system we have one gunvor instance running on an development
server and we are pulling the drools packages (as type="PKG"), which
basically consists of compiled business rules (.brl) from that guvnor
repository.

So now we also have the requirement, that people wanna work (develop/test)
the system offline, means not connected to the guvnor. For this reason my
idea was, that when online I checkout the brl files from the guvnor into my
eclipse project, and use (compile) them directly with the KnowledgeAgent
using a local (classpath relativ) resource location in the changeset.
Actually this setup  works fine with the drl files, but as I experienced not
for the brl files. :(

Another possibility would be that I can checkout (via the guvnor repository)
the compile rules set in PKG format, but this seems not to be part of the
repository (resp. snapshot) drools files of a rules package, right (or did I
oversee something)

Any ideas are sure welcome.

Btw. what are the detailed plan to use RuleML in drools and can you suggest
me any good info sites (or books) on that language?

thx a lot, guys
cheers
-hugo

On 22 October 2010 04:15, Michael Neale <michael.neale at gmail.com> wrote:

> I think best not to add support for it directly. it is an internal format -
> and will one day be deprecated in favour of a ruleml dialect (I think this
> was mentioned previously).
>
> On Fri, Oct 22, 2010 at 12:32 PM, esteban.aliverti at gmail.com <
> esteban.aliverti at gmail.com> wrote:
>
>> As far as i know, Brl syntax is kind of "deprecated". Only guvnor should
>> use it. I can add support for brl easily, but i don't know if this is
>> correct or not. Guys? What is your opinion?
>>
>> El oct 21, 2010 5:46 p.m., "drhookson" <hugo at koblmueller.com> escribió:
>>
>>
>> hi.all,
>>
>> I working with drools-5.1.1 and just wanted to change my working
>> knowledgeagent version, which pulls the package binary from the guvnor, to
>> use local stored BRL files.
>>
>> As for what I assumed that the KnowledgeAgent is aware of the different
>> resource types, I simply exchanged in the change-set.xml the resource
>> location and type specification accordingly to the BRL ones, like the
>> following:
>>                        String ruleFile =
>> "file://Projects/Workspace/myProject/src/rules/DeadManSwitch.brl";
>>         String xml = "";
>>                        xml += "<change-set
>> xmlns='http://drools.org/drools-5.0/change-set'";
>>                        xml += "
>> xmlns:xs='http://www.w3.org/2001/XMLSchema-instance'";
>>                        xml += "
>> 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
>> '
>> >";
>>                        xml += "    <add>";
>>                        xml += "         <resource source='" + ruleFile +
>> "'
>> type='BRL'/>";
>>                        xml += "    </add>";
>>                        xml += "</change-set>";
>>
>> All the other things like setting up the KnowledgeAgent, applying the
>> change
>> set, a.s.o remained the same, but when executing the program I get the
>> following exception reported:
>>
>> SEVERE: Run exception: java.lang.RuntimeException:
>> org.drools.compiler.DroolsParserException:
>> org.drools.CheckedDroolsException: Unable to find implementation for
>> BusinessRuleProvider
>> Stack trace:
>>
>> org.drools.compiler.PackageBuilder.addKnowledgeResource(PackageBuilder.java:544)
>>
>> org.drools.builder.impl.KnowledgeBuilderImpl.add(KnowledgeBuilderImpl.java:28)
>>
>> org.drools.agent.impl.KnowledgeAgentImpl.createPackageFromResource(KnowledgeAgentImpl.java:637)
>>
>> org.drools.agent.impl.KnowledgeAgentImpl.addResourcesToKnowledgeBase(KnowledgeAgentImpl.java:889)
>>
>> org.drools.agent.impl.KnowledgeAgentImpl.rebuildResources(KnowledgeAgentImpl.java:704)
>>
>> org.drools.agent.impl.KnowledgeAgentImpl.buildKnowledgeBase(KnowledgeAgentImpl.java:584)
>>
>> org.drools.agent.impl.KnowledgeAgentImpl.applyChangeSet(KnowledgeAgentImpl.java:185)
>>
>> org.drools.agent.impl.KnowledgeAgentImpl.applyChangeSet(KnowledgeAgentImpl.java:168)
>>
>> Any idea what am I missing here?
>>
>> thx
>> -hugo
>>
>> --
>> View this message in context:
>> http://drools-java-rules-engine.46999.n3.nabble.com/KnowledgeAgent-Unable-to-find-implementation-for-BusinessRuleProvider-tp1748593p1748593.html
>> Sent from the Drools - Dev mailing list archive at Nabble.com.
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>>
>
>
> --
> Michael D Neale
> home: www.michaelneale.net
> blog: michaelneale.blogspot.com
>
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