Hi there. I'm trying to get automatic update of rules working in my project, and seem to have run into a problem. As far as I can tell, automatic polling and updating is turned on, and claims to update the knowledgebase, but changes to the rules don't seem to have any effect. A simple example - if I add the rule: rule "TestRule" dialect "mvel" when then System.out.println("Hello, world!"); end And start my application, I get: Firing all rules... Hello, world! All rules fired. As expected. If I then change the rule as follows: rule "TestRule" dialect "mvel" when then System.out.println("I have changed!"); end I get this output (timestamps trimmed for readability): ResourceChangeScanner attempt to scan 1 resources ResourceChangeScanner modified resource=[UrlResource path=' http://localhost:1337/drools-guvnor/org.drools.guvnor.Guvnor/package/ERMI... '] : 1277371031000 : 1277371254000 ResourceChangeNotification received ChangeSet notification ResourceChangeScanner thread is waiting for 60 ResourceChangeNotification processing ChangeSet ResourceChangeNotification ChangeSet modified resource=[UrlResource path=' http://localhost:1337/drools-guvnor/org.drools.guvnor.Guvnor/package/ERMI... '] for listener=org.drools.agent.impl.KnowledgeAgentImpl@e2d0b2 KnowledgeAgent received ChangeSet changed notification ResourceChangeNotification thread is waiting for queue update KnowledgAgent applying ChangeSet KnowledgeAgent ChangeSet requires KnowledgeBuilderKnowledgeAgent rebuilding KnowledgeBase using ChangeSet KnowledgeAgent building resource=[UrlResource path=' http://localhost:1337/drools-guvnor/org.drools.guvnor.Guvnor/package/ERMI... '] KnowledgeAgent adding KnowledgeDefinitionsPackage ERMIE KnowledgeAgent new KnowledgeBase now built and in use So, this makes it seem like everything has worked. However, if I insert a new fact and fire all rules... Inserting new fact... Hello, World! So, it hasn't worked. What might I have done wrong? -Stephen -- The University of Edinburgh is a charitable body, registered in Scotland, with registration number SC005336. _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users

Sorry, I'm using Drools 5.0.1 Cheers, Stephen Quoting Esteban Aliverti <esteban.aliverti(a)gmail.com&gt;: > Which version of drools are you using? > > On Thu, Jun 24, 2010 at 5:33 AM, Stephen Mcgruer > <s0840449(a)sms.ed.ac.uk&gt;wrote: > >> Hi there. I'm trying to get automatic update of rules working in my >> project, and seem to >> have run into a problem. As far as I can tell, automatic polling and >> updating is turned >> on, and claims to update the knowledgebase, but changes to the rules >> don't seem to have >> any effect. A simple example - if I add the rule: >> >> rule "TestRule" >> dialect "mvel" >> when >> then >> System.out.println("Hello, world!"); >> end >> >> And start my application, I get: >> >> Firing all rules... >> Hello, world! >> All rules fired. >> >> As expected. If I then change the rule as follows: >> >> rule "TestRule" >> dialect "mvel" >> when >> then >> System.out.println("I have changed!"); >> end >> >> I get this output (timestamps trimmed for readability): >> >> ResourceChangeScanner attempt to scan 1 resources >> ResourceChangeScanner modified resource=[UrlResource >> path=' >> http://localhost:1337/drools-guvnor/org.drools.guvnor.Guvnor/package/ERMI... >> '] >> : >> 1277371031000 : 1277371254000 >> ResourceChangeNotification received ChangeSet notification >> ResourceChangeScanner thread is waiting for 60 >> ResourceChangeNotification processing ChangeSet >> ResourceChangeNotification ChangeSet modified resource=[UrlResource >> path=' >> http://localhost:1337/drools-guvnor/org.drools.guvnor.Guvnor/package/ERMI... >> '] >> for listener=org.drools.agent.impl.KnowledgeAgentImpl@e2d0b2 >> KnowledgeAgent received ChangeSet changed notification >> ResourceChangeNotification thread is waiting for queue update >> KnowledgAgent applying ChangeSet >> KnowledgeAgent ChangeSet requires KnowledgeBuilderKnowledgeAgent >> rebuilding KnowledgeBase >> using ChangeSet >> KnowledgeAgent building resource=[UrlResource >> path=' >> http://localhost:1337/drools-guvnor/org.drools.guvnor.Guvnor/package/ERMI... >> '] >> KnowledgeAgent adding KnowledgeDefinitionsPackage ERMIE >> KnowledgeAgent new KnowledgeBase now built and in use >> >> So, this makes it seem like everything has worked. However, if I >> insert a new fact and >> fire all rules... >> >> Inserting new fact... >> Hello, World! >> >> So, it hasn't worked. What might I have done wrong? >> >> >> -Stephen >> >> -- >> The University of Edinburgh is a charitable body, registered in >> Scotland, with registration number SC005336. >> >> >> >> _______________________________________________ >> rules-users mailing list >> rules-users(a)lists.jboss.org >> https://lists.jboss.org/mailman/listinfo/rules-users >> > > > > -- > XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX > > Esteban Aliverti > -- The University of Edinburgh is a charitable body, registered in Scotland, with registration number SC005336. _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users

Unfortunately that might be quite tricky, although I can try if necessary. I do think that perhaps the problem lies in the way I handle the auto-updating, I think I'm doing it wrong. Originally I just created the knowledge base and knowledge agent like so, and started the ResourceChange Notifier and Scanner services: //construct a knowledgebase that uses Equality mode assert behaviour so that it can match beans properly KnowledgeBaseConfiguration knowledgeBaseConfig = KnowledgeBaseFactory.newKnowledgeBaseConfiguration(); knowledgeBaseConfig.setProperty("drools.assertBehaviour", "equality"); knowledgeBase = KnowledgeBaseFactory.newKnowledgeBase(knowledgeBaseConfig); //create a new knowledgeAgent to track changes knowledgeAgent = KnowledgeAgentFactory.newKnowledgeAgent( "knowledgeAgent", knowledgeBase ); knowledgeAgent.applyChangeSet( ResourceFactory.newClassPathResource( "changeSet.xml" ) ); knowledgeBase = knowledgeAgent.getKnowledgeBase(); ResourceFactory.getResourceChangeNotifierService().start(); ResourceFactory.getResourceChangeScannerService().start(); This seemed to claim to update the knowledge base, but nothing changed as I mentioned before. At the moment, I'm trying rebuilding the knowledgebase when I detect a change, but this involves re-inserting the entire database which could be big eventuallly... And it doesn't even work entirely correctly either XD. What are the correct steps to take to keep a knowledgeBase auto-updating, and do you have to re-create it each time? Thanks, Stephen Quoting Esteban Aliverti <esteban.aliverti(a)gmail.com&gt;: > Could you please try your example using latest SNAPSHOT or 5.1M2? > > Thanks > > On Thu, Jun 24, 2010 at 10:20 AM, Stephen Mcgruer > <s0840449(a)sms.ed.ac.uk&gt;wrote: > >> Sorry, I'm using Drools 5.0.1 >> >> Cheers, >> Stephen >> >> Quoting Esteban Aliverti <esteban.aliverti(a)gmail.com&gt;: >> >> > Which version of drools are you using? >> > >> > On Thu, Jun 24, 2010 at 5:33 AM, Stephen Mcgruer >> > <s0840449(a)sms.ed.ac.uk&gt;wrote: >> > >> >> Hi there. I'm trying to get automatic update of rules working in my >> >> project, and seem to >> >> have run into a problem. As far as I can tell, automatic polling and >> >> updating is turned >> >> on, and claims to update the knowledgebase, but changes to the rules >> >> don't seem to have >> >> any effect. A simple example - if I add the rule: >> >> >> >> rule "TestRule" >> >> dialect "mvel" >> >> when >> >> then >> >> System.out.println("Hello, world!"); >> >> end >> >> >> >> And start my application, I get: >> >> >> >> Firing all rules... >> >> Hello, world! >> >> All rules fired. >> >> >> >> As expected. If I then change the rule as follows: >> >> >> >> rule "TestRule" >> >> dialect "mvel" >> >> when >> >> then >> >> System.out.println("I have changed!"); >> >> end >> >> >> >> I get this output (timestamps trimmed for readability): >> >> >> >> ResourceChangeScanner attempt to scan 1 resources >> >> ResourceChangeScanner modified resource=[UrlResource >> >> path=' >> >> >> http://localhost:1337/drools-guvnor/org.drools.guvnor.Guvnor/package/ERMI... >> >> '] >> >> : >> >> 1277371031000 : 1277371254000 >> >> ResourceChangeNotification received ChangeSet notification >> >> ResourceChangeScanner thread is waiting for 60 >> >> ResourceChangeNotification processing ChangeSet >> >> ResourceChangeNotification ChangeSet modified resource=[UrlResource >> >> path=' >> >> >> http://localhost:1337/drools-guvnor/org.drools.guvnor.Guvnor/package/ERMI... >> >> '] >> >> for listener=org.drools.agent.impl.KnowledgeAgentImpl@e2d0b2 >> >> KnowledgeAgent received ChangeSet changed notification >> >> ResourceChangeNotification thread is waiting for queue update >> >> KnowledgAgent applying ChangeSet >> >> KnowledgeAgent ChangeSet requires KnowledgeBuilderKnowledgeAgent >> >> rebuilding KnowledgeBase >> >> using ChangeSet >> >> KnowledgeAgent building resource=[UrlResource >> >> path=' >> >> >> http://localhost:1337/drools-guvnor/org.drools.guvnor.Guvnor/package/ERMI... >> >> '] >> >> KnowledgeAgent adding KnowledgeDefinitionsPackage ERMIE >> >> KnowledgeAgent new KnowledgeBase now built and in use >> >> >> >> So, this makes it seem like everything has worked. However, if I >> >> insert a new fact and >> >> fire all rules... >> >> >> >> Inserting new fact... >> >> Hello, World! >> >> >> >> So, it hasn't worked. What might I have done wrong? >> >> >> >> >> >> -Stephen >> >> >> >> -- >> >> The University of Edinburgh is a charitable body, registered in >> >> Scotland, with registration number SC005336. >> >> >> >> >> >> >> >> _______________________________________________ >> >> rules-users mailing list >> >> rules-users(a)lists.jboss.org >> >> https://lists.jboss.org/mailman/listinfo/rules-users >> >> >> > >> > >> > >> > -- >> > XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX >> > >> > Esteban Aliverti >> > >> >> >> >> -- >> The University of Edinburgh is a charitable body, registered in >> Scotland, with registration number SC005336. >> >> >> >> _______________________________________________ >> rules-users mailing list >> rules-users(a)lists.jboss.org >> https://lists.jboss.org/mailman/listinfo/rules-users >> > > > > -- > XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX > > Esteban Aliverti > -- The University of Edinburgh is a charitable body, registered in Scotland, with registration number SC005336. _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users