[rules-users] KnowledgeAgent and OSGI

[mmarmol]

Hi, I have managed to install Drools-core and Drools-compiler in my Equinox
osgi environment, I can compile rules and execute them just fine, I was just
wandering how to configure a KnowledgeAgent using
KnowledgeBuilderFactoryService and KnowledgeBaseFactoryService. I managed to
configure one but i am not able to reload rules when they change at runtime. 
I have started ResourceChangeScannerService and
ResourceChangeNotifierService, changeset related to the rules file gets read
but no change gets implemented. An idea?


Here is the code:

		ResourceFactory.getResourceChangeScannerService().start();
		ResourceFactory.getResourceChangeNotifierService().start();

		ServiceReference serviceRef = bc
				.getServiceReference(ServiceRegistry.class.getName());
		ServiceRegistry registry = (ServiceRegistry) bc.getService(serviceRef);

		KnowledgeBuilderFactoryService knowledgeBuilderFactoryService = registry
				.get(KnowledgeBuilderFactoryService.class);

		KnowledgeBaseFactoryService knowledgeBaseFactoryService = registry
				.get(KnowledgeBaseFactoryService.class);
		ResourceFactoryService resourceFactoryService = registry
				.get(ResourceFactoryService.class);

		KnowledgeBuilderConfiguration kbConf = knowledgeBuilderFactoryService
				.newKnowledgeBuilderConfiguration(null, getClass()
						.getClassLoader());

		KnowledgeBuilder kbuilder = knowledgeBuilderFactoryService
				.newKnowledgeBuilder(kbConf);
		ResourceFactoryService resource = resourceFactoryService;
		kbuilder.add(resource.newFileSystemResource(filePath),
				ResourceType.CHANGE_SET);

		if (kbuilder.hasErrors()) {
			System.out.println(kbuilder.getErrors());
			throw new RuntimeException(kbuilder.getErrors().toString());
		}

		KnowledgeBaseConfiguration kbaseConf = knowledgeBaseFactoryService
				.newKnowledgeBaseConfiguration(null, getClass()
						.getClassLoader());

		KnowledgeBase kbase = knowledgeBaseFactoryService
				.newKnowledgeBase(kbaseConf);
		kbase.addKnowledgePackages(kbuilder.getKnowledgePackages());

		KnowledgeAgentConfiguration aconf =
		KnowledgeAgentFactory.newKnowledgeAgentConfiguration();
		aconf.setProperty("drools.agent.scanDirectories", "true");
		aconf.setProperty("drools.agent.scanResources", "true");
		aconf.setProperty("drools.agent.newInstance", "false");
		
		kagent = KnowledgeAgentFactory.newKnowledgeAgent( "CoreDroolsAgent",kbase,
aconf);
		kagent.applyChangeSet(resource.newFileSystemResource(filePath));

Thanks in advance!

Cheers
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