Which version of karaf / felix do you use ? I'm using this version of Felix/karaf
Karaf version 2.3.0.redhat-610379 OSGi Framework org.apache.felix.framework - 4.0.3.redhat-610379 Java Virtual Machine Java HotSpot(TM) 64-Bit Server VM version 24.51-b03 Version 1.7.0_51 I have made a test with this rule packaged with this maven module ( https://github.com/cmoulliard/droolsjbpm-osgi-examples#simple-rule-example) and that works in both cases package org.drools.example.drink; import org.drools.example.model.Person import java.util.List import java.util.ArrayList; rule "CanDrink" when p : Person( age >= 21 ) then p.setCanDrink(true); List<String> l = new ArrayList<>(); end OR package org.drools.example.drink; import org.drools.example.model.Person import java.util.List import java.util.ArrayList; rule "CanDrink" when p : Person( age >= 21 ) then p.setCanDrink(true); List<String> l = new ArrayList<String>(); end On Tue, May 20, 2014 at 5:10 PM, Ephemeris Lappis < ephemeris.lap...@gmail.com> wrote: > In this case it's not a global, but a temporary variable in the rule > consequence. Indeed, the problem is not only about generics, but impacts > all the syntax elements that may have changed since Java 1.5, and make the > rules Java compiler fails when running in ServiceMix. > > As I said before, the workaround is quite easy, changing all the Java code > to be compliant with the compilation level. The question is just about a > confirmation of the Felix's class loader (org/apache/felix/framework/ > ModuleImpl$ModuleClassLoaderJava5) in the compiler's behavior, and a > better solution to be able to write RHS with a 'modern' syntax. > > Thanks. > > > 2014-05-20 16:56 GMT+02:00 Charles Moulliard [via Drools] <[hidden > email]<http://user/SendEmail.jtp?type=node&node=4029629&i=0> > >: > >> Is it a list that you would like to use as global param ? If this is the >> case, maybe change your rule & code like that >> >> //GET A KSESSION >> StatefulKnowledgeSession ksession = >> kbase.newStatefulKnowledgeSession(); >> >> //now create some test data >> ksession.insert( new Cheese( "stilton", >> 42 ) ); >> ksession.insert( new Person( "michael", >> "stilton", >> 42 ) ); >> final List<String> list = new ArrayList<String>(); >> ksession.setGlobal( "list", >> list ); >> >> ksession.fireAllRules(); >> >> System.out.println(list); >> >> ksession.dispose(); >> >> Rule >> >> template header >> age >> type >> log >> >> package org.drools.examples.templates; >> >> global java.util.List list; >> >> template "cheesefans" >> >> rule "Cheese fans_@{row.rowNumber}" >> when >> Person(age == @{age}) >> Cheese(type == "@{type}") >> then >> list.add("@{log}"); >> end >> end template >> >> >> >> On Tue, May 20, 2014 at 4:40 PM, Ephemeris Lappis <[hidden >> email]<http://user/SendEmail.jtp?type=node&node=4029628&i=0> >> > wrote: >> >>> Hello. >>> >>> I have no such kind test with Pax Exam. Should you send me a simple >>> maven project example using a Karaf container ? >>> >>> Back to the problem, a very simple rule with something like that in the >>> RHS always fails when deployed in a bundle whose class loader is the felix >>> one : >>> >>> List<String> l = new ArrayList<>(); >>> that must be fixed with : >>> List<String> l = new ArrayList<String>(); >>> >>> or >>> >>> int n = 1_000; >>> that fails instead of : >>> int n = 1000; >>> >>> FYI, I use ServiceMix 4.5.3. >>> >>> Thanks again. >>> Regards. >>> >>> >>> >>> 2014-05-20 15:41 GMT+02:00 Charles Moulliard <[hidden >>> email]<http://user/SendEmail.jtp?type=node&node=4029628&i=1> >>> >: >>> >>> A test case will be required to reproduce your problem. Do you have a >>>> pax-exam test ? >>>> >>>> >>>> On Tue, May 20, 2014 at 1:03 PM, Ephemeris Lappis <[hidden >>>> email]<http://user/SendEmail.jtp?type=node&node=4029628&i=2> >>>> > wrote: >>>> >>>>> Hello. >>>>> >>>>> Here is the first lines of the error message : >>>>> >>>>> >>>>> 14:58:57,457 | ERROR | tp1946301910-151 | AbstractKieModule >>>>> | >>>>> 239 - org.drools.compiler - 6.1.0.20140429-1643 | Unable to build >>>>> KieBaseModel:MyKBase >>>>> Rule Compilation error : [Rule name='Main Rule'] >>>>> >>>>> my/tests/drools/osgi/expert/rules/Rule_Main_Rule1409557233.java (8:649) : >>>>> Incorrect number of arguments for type HashMap<K,V>; it cannot be >>>>> parameterized with arguments <?> >>>>> >>>>> my/tests/drools/osgi/expert/rules/Rule_Main_Rule1409557233.java (8:666) : >>>>> Syntax error on token "<", ? expected after this token >>>>> >>>>> >>>>> I have found the explanation and a workaround : put it all with a >>>>> strict >>>>> "1.5" syntax in the RHS ! In this current case, do not use <> to >>>>> infere the >>>>> generic type, but use the expected declared types instead. >>>>> >>>>> After a rather touchy remote debug of the ServiceMix runtime to >>>>> inspect what >>>>> is different from the Junit tests, I think that the problem comes from >>>>> the >>>>> classloader that is associated with the Kie container. Before >>>>> compilation >>>>> the language source and target level is set with version 1.7 as >>>>> expected, >>>>> but in the nameEnvironment that is passed to the JavaCompiler (indeed, >>>>> ecj >>>>> compiler), the droolsClassloader is of type >>>>> "org/apache/felix/framework/ModuleImpl$ModuleClassLoaderJava5". As its >>>>> name >>>>> seems to incidate, I'm afraid that the Karaf/Felix loader is originally >>>>> built in 1.5. >>>>> >>>>> I've read some posts about the eclipse compiler that perhaps takes into >>>>> account the caller compliance to adapt its compilation language level. >>>>> >>>>> Class loaders seem to be a serious problem when using Drools in complex >>>>> environment such as a OSGi one... >>>>> >>>>> Please, could you confirm my analysis, and, if you have one, propose >>>>> any >>>>> better solution ? I don't know, for example, if it's possible to >>>>> influence >>>>> Karaf to use different levels of bundle class loaders... >>>>> >>>>> Thanks a lot. >>>>> >>>>> Regards. >>>>> >>>>> >>>>> >>>>> -- >>>>> View this message in context: >>>>> http://drools.46999.n3.nabble.com/Rules-compilation-error-with-OSGi-integration-6-1-0-Beta3-tp4029601p4029622.html >>>>> Sent from the Drools: User forum mailing list archive at Nabble.com. >>>>> _______________________________________________ >>>>> rules-users mailing list >>>>> [hidden email] <http://user/SendEmail.jtp?type=node&node=4029628&i=3> >>>>> https://lists.jboss.org/mailman/listinfo/rules-users >>>>> >>>> >>>> >>>> >>>> -- >>>> Charles Moulliard >>>> Apache Committer / Architect @RedHat >>>> Twitter : @cmoulliard | Blog : http://cmoulliard.github.io >>>> >>>> >>>> _______________________________________________ >>>> rules-users mailing list >>>> [hidden email] <http://user/SendEmail.jtp?type=node&node=4029628&i=4> >>>> https://lists.jboss.org/mailman/listinfo/rules-users >>>> >>> >>> >>> _______________________________________________ >>> rules-users mailing list >>> [hidden email] <http://user/SendEmail.jtp?type=node&node=4029628&i=5> >>> https://lists.jboss.org/mailman/listinfo/rules-users >>> >> >> >> >> -- >> Charles Moulliard >> Apache Committer / Architect @RedHat >> Twitter : @cmoulliard | Blog : http://cmoulliard.github.io >> >> >> _______________________________________________ >> rules-users mailing list >> [hidden email] <http://user/SendEmail.jtp?type=node&node=4029628&i=6> >> https://lists.jboss.org/mailman/listinfo/rules-users >> >> ------------------------------ >> If you reply to this email, your message will be added to the >> discussion below: >> >> http://drools.46999.n3.nabble.com/Rules-compilation-error-with-OSGi-integration-6-1-0-Beta3-tp4029601p4029628.html >> To unsubscribe from Rules compilation error with OSGi integration >> (6.1.0.Beta3), click here. >> NAML<http://drools.46999.n3.nabble.com/template/NamlServlet.jtp?macro=macro_viewer&id=instant_html%21nabble%3Aemail.naml&base=nabble.naml.namespaces.BasicNamespace-nabble.view.web.template.NabbleNamespace-nabble.view.web.template.NodeNamespace&breadcrumbs=notify_subscribers%21nabble%3Aemail.naml-instant_emails%21nabble%3Aemail.naml-send_instant_email%21nabble%3Aemail.naml> >> > > > ------------------------------ > View this message in context: Re: [rules-users] Rules compilation error > with OSGi integration > (6.1.0.Beta3)<http://drools.46999.n3.nabble.com/Rules-compilation-error-with-OSGi-integration-6-1-0-Beta3-tp4029601p4029629.html> > > Sent from the Drools: User forum mailing list > archive<http://drools.46999.n3.nabble.com/Drools-User-forum-f47000.html>at > Nabble.com. > > _______________________________________________ > rules-users mailing list > rules-users@lists.jboss.org > https://lists.jboss.org/mailman/listinfo/rules-users > -- Charles Moulliard Apache Committer / Architect @RedHat Twitter : @cmoulliard | Blog : http://cmoulliard.github.io
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