The ResourceChangeScanner will consider a resource modified if last modification > last read. If your resource is a URL resource pointing to a file, the implementation (version 5.6, at least) will delegate to File.lastModified(). Make sure that whenever you (re)deploy your PKGs, the lastModified() timestamp is updated
On 03/13/2014 12:47 PM, Peach Wyss wrote: > Hy all > > We're having the following situation in our application: > > ChangeSet: > <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='file:rules/rules.pkg' type='PKG' /> > </add> > </change-set> > > > Code: > ... > // Build initial KnowledgeBase > KnowledgeBuilderConfiguration kbuilderConfig = > KnowledgeBuilderFactory.newKnowledgeBuilderConfiguration(null, > classloaders); > knowledgeBuilder = > KnowledgeBuilderFactory.newKnowledgeBuilder(kbuilderConfig); > knowledgeBuilder.add(resource, resourceType); //Resource: URL-Resource > (Patch to ChangeSet), ResourceType: ChangeSet > Collection<KnowledgePackage> knowledgePackages = > knowledgeBuilder.getKnowledgePackages(); > knowledgeBase.addKnowledgePackages(knowledgePackages); > > // Create and configure Knowledge Agent > KnowledgeAgentConfiguration knowledgeAgentConfig = > KnowledgeAgentFactory.newKnowledgeAgentConfiguration(); > knowledgeAgentConfig.setProperty("drools.agent.useKBaseClassLoaderForCompiling", > "true"); > knowledgeAgentConfig.setProperty("drools.agent.newInstance", "false"); > knowledgeAgent = KnowledgeAgentFactory.newKnowledgeAgent("MyAgent", > knowledgeBase, knowledgeAgentConfig); > knowledgeAgent.addEventListener(new KnowledgeAgentEventListener() > {...} // Just for debugging purposes > knowledgeAgent.monitorResourceChangeEvents(true); > knowledgeAgent.applyChangeSet(resource); > > // Configure Notification and Scanner > ResourceChangeScannerConfiguration resourceChangeScannerConfig = > ResourceFactory > > .getResourceChangeScannerService().newResourceChangeScannerConfiguration(); > resourceChangeScannerConfig.setProperty("drools.resource.scanner.interval", > "10"); > ResourceFactory.getResourceChangeScannerService().configure(resourceChangeScannerConfig); > ResourceFactory.getResourceChangeNotifierService().start(); > ResourceFactory.getResourceChangeScannerService().start(); > > // Get KnowledgeBase from Agent > knowledgeBase = knowledgeAgent.getKnowledgeBase(); > ... > > > When i replace the rules.pkg with a new package (exported from guvnor > with a newer "Date Modified"), the Knowledge-Base is newly generated. > When I replace the pkg with the Package from the previous Version > (older "Date modified"), nothing happens (despite the pkg has changed). > > Question: > Does the agent only updates the Knowledge-Base, when the replaced > pkg-File has a newer "Date Modified"? > In our scenario, the expected behaviour would be that the Agent > updates the Knowledge-Base everytime the pkg-file changes, so that we > can switch between newer and older versions of the pkg-file. Any idea > how to achieve this? > > Thanks for your help. > > Kind regards, > Peter > > > _______________________________________________ > rules-users mailing list > rules-users@lists.jboss.org > https://lists.jboss.org/mailman/listinfo/rules-users
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