I should've mentioned this was in Drools 5.0.1. I've created a small test app which demonstrates the issue. I've attached it to this message: Macon ________________________________ From: rules-users-bounces(a)lists.jboss.org [mailto:rules-users-bounces@lists.jboss.org] On Behalf Of Pegram, Macon Sent: Monday, October 26, 2009 4:36 PM To: Rules Users List Subject: [rules-users] DSL, DSLR and Changesets... All, Are DSL and DSLR files supported by the KnowledgeAgent / Changeset code. Here's the details of my test case: I have a Changeset file I'm trying to load which looks like the following: <?xml version="1.0" encoding="UTF-8"?> <change-set xmlns='http://drools.org/drools-5.0/change-set' xmlns:xs='http://www.w3.org/2001/XMLSchema-instance' > <add> <resource source="classpath:com/test/general/" type="DSL" /> <resource source="classpath:com/test/general/" type="DSLR" /> </add> </change-set> There's a single DSL and a single DSLR file in this folder. I'm loading the change set as follows: KnowledgeAgent ka = KnowledgeAgentFactory.newKnowledgeAgent(agentName); ka.applyChangeSet(ResourceFactory.newClassPathResource(agentName + "-changeset.xml", getClass())); When I run this code, the logger suggests the DSL and DSLR are being loaded and compiled: [2009:10:299 16:10:52:info] KnowledgAgent created, with configuration: monitorChangeSetEvents=true scanResources=true scanDirectories=true ++ Constructing and applying changeSet: dsl-test [2009:10:299 16:10:52:info] KnowledegAgent has started listening for ChangeSet notifications (null: 3, 68): cvc-elt.1: Cannot find the declaration of element 'change-set'. [2009:10:299 16:10:317:info] KnowledgAgent applying ChangeSet [2009:10:299 16:10:317:debug] KnowledgeAgent subscribing to directory=[ClassPathResource path='com/test/general/'] [2009:10:299 16:10:317:debug] ResourceChangeNotification subscribing listener=org.drools.agent.impl.KnowledgeAgentImpl@b9b618 to resource=[ClassPathResource path='com/test/general/'] [2009:10:299 16:10:317:debug] ResourceChangeScanner subcribing notifier=org.drools.io.impl.ResourceChangeNotifierImpl@61ec49 to resource=[ClassPathResource path='com/test/general/'] [2009:10:299 16:10:317:debug] KnowledgeAgent subscribing to directory content resource=[FileResource file='C:\bea\user_projects\workspaces\alerts\rules-kb\test-kb\target\tes t-classes\com\test\general\test.dsl'] [2009:10:299 16:10:317:debug] ResourceChangeNotification subscribing listener=org.drools.agent.impl.KnowledgeAgentImpl@b9b618 to resource=[FileResource file='C:\bea\user_projects\workspaces\alerts\rules-kb\test-kb\target\tes t-classes\com\test\general\test.dsl'] [2009:10:299 16:10:317:debug] ResourceChangeScanner subcribing notifier=org.drools.io.impl.ResourceChangeNotifierImpl@61ec49 to resource=[FileResource file='C:\bea\user_projects\workspaces\alerts\rules-kb\test-kb\target\tes t-classes\com\test\general\test.dsl'] [2009:10:299 16:10:317:debug] KnowledgeAgent subscribing to directory content resource=[FileResource file='C:\bea\user_projects\workspaces\alerts\rules-kb\test-kb\target\tes t-classes\com\test\general\test-dsl.dslr'] [2009:10:299 16:10:317:debug] ResourceChangeNotification subscribing listener=org.drools.agent.impl.KnowledgeAgentImpl@b9b618 to resource=[FileResource file='C:\bea\user_projects\workspaces\alerts\rules-kb\test-kb\target\tes t-classes\com\test\general\test-dsl.dslr'] [2009:10:299 16:10:317:debug] ResourceChangeScanner subcribing notifier=org.drools.io.impl.ResourceChangeNotifierImpl@61ec49 to resource=[FileResource file='C:\bea\user_projects\workspaces\alerts\rules-kb\test-kb\target\tes t-classes\com\test\general\test-dsl.dslr'] [2009:10:299 16:10:317:debug] KnowledgeAgent subscribing to directory=[ClassPathResource path='com/hmc/test/general/'] [2009:10:299 16:10:317:debug] ResourceChangeNotification subscribing listener=org.drools.agent.impl.KnowledgeAgentImpl@b9b618 to resource=[ClassPathResource path='com/hmc/test/general/'] [2009:10:299 16:10:317:debug] KnowledgeAgent ChangeSet requires KnowledgeBuilder [2009:10:299 16:10:317:debug] KnowledgeAgent rebuilding KnowledgeBase using ChangeSet [2009:10:299 16:10:317:debug] KnowledgeAgent building resource=[FileResource file='C:\bea\user_projects\workspaces\alerts\rules-kb\test-kb\target\tes t-classes\com\test\general\test.dsl'] [2009:10:299 16:10:333:debug] KnowledgeAgent building resource=[FileResource file='C:\bea\user_projects\workspaces\alerts\rules-kb\test-kb\target\tes t-classes\com\test\general\test-dsl.dslr'] [2009:10:299 16:10:333:info] KnowledgeAgent new KnowledgeBase now built and in use However after load is completed I try to run the following code: System.out.println("KB Info"); Collection<KnowledgePackage> pkgs = ka.getKnowledgeBase().getKnowledgePackages(); for (KnowledgePackage kp : pkgs) { for (Rule rule : kp.getRules()) { System.out.println("Rule: " + rule.getName() + ", " + ule.getPackageName()); for (String attribs : rule.listMetaAttributes()) System.out.println("---- " + attribs); } } } I get NO output (except of course "KB Info"). If I initialize the knowledgebase like this: KnowledgeBuilder kbuilder = KnowledgeBuilderFactory .newKnowledgeBuilder(); kbuilder.add(ResourceFactory .newClassPathResource("com/test/general/test.dsl"), ResourceType.DSL); kbuilder.add(ResourceFactory .newClassPathResource("com/test/general/test-dsl.dslr"), ResourceType.DSLR); if (kbuilder.hasErrors()) { throw new Exception(kbuilder.getErrors().toString()); } KnowledgeBase kbase = KnowledgeBaseFactory.newKnowledgeBase(); kbase.addKnowledgePackages(kbuilder.getKnowledgePackages()); } ... and run the same output code I get a list of the rules that were loaded. Any clues why the different behavior? Macon