If you don't mind, I am also interested to share opinions and work. Martin
2013/9/4 Alexander Herwix <a...@herwix.com> > Hey Markus, > > that sounds really interesting! I would love to know your opinion on how > to integrate grails and drools in the best way. If we have similar ideas > and goals for the plugin that would be really good way to proceed. Maybe we > can set up a talk in irc or the like? I'm currently working on this full > time so just hit me up on my mail address to set something up. > > Cheers, Alex > > Am 04.09.2013 um 19:44 schrieb Markus Schneider < > markus.schneide...@gmail.com>: > > Hi Alex, > > I'm developing a Grails Drools Plugin, too. At the moment I'm working on > an ECA (Event Correlation & Analysis) solution so my current focus is on > expert & fusion. But jBPM is also an important module that I'll need in the > future. > Maybe we can come togehter and create one feature rich grails plugin. > Let me know if you're interested. > > Cheers > > -markus > > > > > > 2013/9/4 Alexander Herwix <a...@herwix.com> > >> Hey Martin, >> >> haven't looked at your code yet, but I have Drools 6 CR1 and 2 running in >> grails though without local HT and JTA persistence. It was pretty straight >> forward, just included the dependencies and pruned duplicate entries (check >> the dependency report). >> >> If I get the plugin working I would be glad to share a demo project. >> However, I think that a fully fledged release of the plugin to grails >> central would take some more time. >> >> Cheers, Alex >> >> Am 03.09.2013 um 21:23 schrieb Martin Minka <martin.mi...@gmail.com>: >> >> Alex, >> I am sorry, I don't have solution for your problem, but maybe I will work >> soon on same issue. >> Are you using Drools 6.0.0.CR2 ? If yes, where you able to overcome this >> problem >> http://drools.46999.n3.nabble.com/rules-users-classloader-problem-in-Drools-6-0-0-CR1-and-CR2-working-in-Beta5-td4025726.html? >> >> Do you mind to share your plugin code with community ? >> >> Best regards, >> Martin >> >> >> >> 2013/9/3 Alexander Herwix <a...@herwix.com> >> >>> Hey guys, >>> >>> I'm working on a Grails plugin for Drools/Jbpm 6 and I have trouble to >>> get persistence working in a user friendly way. It would be awesome if >>> someone with a better understanding of drools and especially drools spring >>> integration could help me to figure this out :) >>> >>> I have considered multiple approaches: >>> >>> - Use a spring LocalContainerEntityManagerFactoryBean with a local >>> JpaTransactionManager to configure a KieEnvironment via Spring. >>> >>> I basically got this working, but this doesn't provide real integration >>> with Grails, as there are 2 seperate local TransactionManagers involved - >>> limiting the ability to integrate drools in the grails app. >>> >>> - Use JTA-Transactions. >>> >>> As I want the plugin to be as user friendly as possible I would like to >>> keep using the default tomcat container for development. There is the >>> Atomikos Plugin for Grails which configures Grails to work with JTA. This >>> works pretty nicely and should suffice for the development environment. >>> >>> My problem is integrating the Atomikos backed JTATransactionManager with >>> the drools 6 spring environment configuration as I have not much experience >>> with JTA. I have looked at the Tests for Kie-Spring and looked at as much >>> documentation as I could find, but I can't seem to figure this out. >>> >>> This is what I use to configure the environment via spring (in Grails >>> groovy syntax) >>> >>> jbpmGlobals(MapGlobalResolver) >>> >>> dacceptor(ClassObjectMarshallingStrategyAcceptor,['*.*']) >>> >>> kie.kstore(id:'kiestore') >>> >>> kie.environment(id: 'jbpmEnv'){ >>> kie.'entity-manager-factory'(ref:'entityManagerFactory') >>> >>> kie.globals(ref:'jbpmGlobals') >>> >>> kie.'object-marshalling-strategies'(){ >>> kie.'jpa-placeholder-resolver-strategy'() >>> >>> kie.'serializable-placeholder-resolver-strategy'('strategy-acceptor-ref':"dacceptor") >>> } >>> } >>> //Tried to wrap my JtaTransactionManager with KieSpringTransactionManager >>> jbpmTransactionManager(KieSpringTransactionManager, >>> ref('transactionManager')) >>> >>> >>> the environment value for transactionManager cannot be set here, because >>> the parser expects a JpaTransactionManager. I tried to add the >>> transactionManager manually to the environment and found the >>> KieSpringTransactionManager, which looked like it could help me somehow, >>> but in the end, there is always the default implementation of the >>> JtaTransactionManager used which can't find the transactionManager that I >>> configured. >>> >>> Error: >>> NamingException occurred when processing request: [GET] >>> /bpm/test/testJbpm >>> Cannot create resource instance. Stacktrace follows: >>> javax.naming.NamingException: Cannot create resource instance >>> at >>> org.apache.naming.factory.TransactionFactory.getObjectInstance(TransactionFactory.java:116) >>> at >>> javax.naming.spi.NamingManager.getObjectInstance(NamingManager.java:321) >>> at org.apache.naming.NamingContext.lookup(NamingContext.java:843) >>> at org.apache.naming.NamingContext.lookup(NamingContext.java:154) >>> at org.apache.naming.NamingContext.lookup(NamingContext.java:831) >>> at org.apache.naming.NamingContext.lookup(NamingContext.java:168) >>> at org.apache.naming.SelectorContext.lookup(SelectorContext.java:158) >>> at javax.naming.InitialContext.lookup(InitialContext.java:411) >>> at >>> org.drools.persistence.jta.JtaTransactionManager.findUserTransaction(JtaTransactionManager.java:122) >>> at >>> org.drools.persistence.jta.JtaTransactionManager.<init>(JtaTransactionManager.java:69) >>> at >>> org.drools.persistence.SingleSessionCommandService.initTransactionManager(SingleSessionCommandService.java:325) >>> at >>> org.drools.persistence.SingleSessionCommandService.<init>(SingleSessionCommandService.java:114) >>> at >>> org.drools.persistence.jpa.KnowledgeStoreServiceImpl.buildCommandService(KnowledgeStoreServiceImpl.java:129) >>> at >>> org.drools.persistence.jpa.KnowledgeStoreServiceImpl.newKieSession(KnowledgeStoreServiceImpl.java:67) >>> at >>> org.drools.persistence.jpa.KnowledgeStoreServiceImpl.newKieSession(KnowledgeStoreServiceImpl.java:36) >>> at bpm.TestController.testJbpm(TestController.groovy:119) >>> at >>> grails.plugin.cache.web.filter.PageFragmentCachingFilter.doFilter(PageFragmentCachingFilter.java:200) >>> at >>> grails.plugin.cache.web.filter.AbstractFilter.doFilter(AbstractFilter.java:63) >>> at >>> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) >>> at >>> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) >>> at java.lang.Thread.run(Thread.java:722) >>> >>> >>> I would be glad about any input. >>> >>> Cheers, Alex >>> >>> >>> _______________________________________________ >>> rules-users mailing list >>> rules-users@lists.jboss.org >>> https://lists.jboss.org/mailman/listinfo/rules-users >>> >> >> _______________________________________________ >> rules-users mailing list >> rules-users@lists.jboss.org >> https://lists.jboss.org/mailman/listinfo/rules-users >> >> >> _______________________________________________ >> rules-users mailing list >> rules-users@lists.jboss.org >> https://lists.jboss.org/mailman/listinfo/rules-users >> > > _______________________________________________ > rules-users mailing list > rules-users@lists.jboss.org > https://lists.jboss.org/mailman/listinfo/rules-users > > > > _______________________________________________ > rules-users mailing list > rules-users@lists.jboss.org > https://lists.jboss.org/mailman/listinfo/rules-users >
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