Interesting, If I run the same code with the 5.4.0-SNAPSHOT patched version (commented and uncommitted lines in JavaDialect) I get the same error that I'm getting with 5.3.0.Final:
Exception in thread "Thread-44" java.lang.ClassCircularityError: org/drools/spi/KnowledgeHelper at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Class.java:247) at org.drools.util.CompositeClassLoader$CachingLoader.load(CompositeClassLoader.java:262) at org.drools.util.CompositeClassLoader.loadClass(CompositeClassLoader.java:105) at org.drools.rule.JavaDialectRuntimeData$PackageClassLoader.loadClass(JavaDialectRuntimeData.java:540) at java.lang.ClassLoader.loadClass(ClassLoader.java:247) at org.eclipse.core.runtime.internal.adaptor.ContextFinder.loadClass(ContextFinder.java:124) at java.lang.ClassLoader.loadClass(ClassLoader.java:247) at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Class.java:247) at org.drools.util.CompositeClassLoader$CachingLoader.load(CompositeClassLoader.java:262) at org.drools.util.CompositeClassLoader.loadClass(CompositeClassLoader.java:105) at org.drools.rule.JavaDialectRuntimeData$PackageClassLoader.loadClass(JavaDialectRuntimeData.java:540) at java.lang.ClassLoader.loadClass(ClassLoader.java:247) at test.Rule_request_bed_3ef79db278164a0c83e4d5dee4930562DefaultConsequenceInvoker.evaluate(Rule_request_bed_3ef79db278164a0c83e4d5dee4930562DefaultConsequenceInvoker.java:16) at org.drools.common.DefaultAgenda.fireActivation(DefaultAgenda.java:1091) at org.drools.common.DefaultAgenda.fireNextItem(DefaultAgenda.java:1029) at org.drools.common.DefaultAgenda.fireUntilHalt(DefaultAgenda.java:1229) at org.drools.common.AbstractWorkingMemory.fireUntilHalt(AbstractWorkingMemory.java:756) at org.drools.common.AbstractWorkingMemory.fireUntilHalt(AbstractWorkingMemory.java:732) at org.drools.impl.StatefulKnowledgeSessionImpl.fireUntilHalt(StatefulKnowledgeSessionImpl.java:234) at com.wordpress.salaboy.hospital.HospitalServiceImpl$1.run(HospitalServiceImpl.java:71) As you can see it's the same exception, but the stack trace looks a little bit different. The generated class contains a couple of UUIDs. Cheers On Tue, Nov 15, 2011 at 2:27 PM, Mauricio Salatino <sala...@gmail.com>wrote: > Mario, > The same code with 5.3.0.Final gives me: > > Exception in thread "Thread-44" java.lang.ClassCircularityError: > org/drools/spi/KnowledgeHelper > at java.lang.Class.forName0(Native Method) > at java.lang.Class.forName(Class.java:247) > at > org.drools.util.CompositeClassLoader$CachingLoader.load(CompositeClassLoader.java:262) > at > org.drools.util.CompositeClassLoader.loadClass(CompositeClassLoader.java:105) > at > org.drools.rule.JavaDialectRuntimeData$PackageClassLoader.loadClass(JavaDialectRuntimeData.java:540) > at java.lang.ClassLoader.loadClass(ClassLoader.java:247) > at > org.eclipse.core.runtime.internal.adaptor.ContextFinder.loadClass(ContextFinder.java:124) > at java.lang.ClassLoader.loadClass(ClassLoader.java:247) > at java.lang.Class.forName0(Native Method) > at java.lang.Class.forName(Class.java:247) > at > org.drools.util.CompositeClassLoader$CachingLoader.load(CompositeClassLoader.java:262) > at > org.drools.util.CompositeClassLoader.loadClass(CompositeClassLoader.java:105) > at > org.drools.rule.JavaDialectRuntimeData$PackageClassLoader.loadClass(JavaDialectRuntimeData.java:540) > at java.lang.ClassLoader.loadClass(ClassLoader.java:247) > at test.Rule_request_bedDefaultConsequenceInvoker.evaluate(Unknown Source) > at > org.drools.common.DefaultAgenda.fireActivation(DefaultAgenda.java:1091) > at org.drools.common.DefaultAgenda.fireNextItem(DefaultAgenda.java:1029) > at org.drools.common.DefaultAgenda.fireUntilHalt(DefaultAgenda.java:1229) > at > org.drools.common.AbstractWorkingMemory.fireUntilHalt(AbstractWorkingMemory.java:753) > at > org.drools.common.AbstractWorkingMemory.fireUntilHalt(AbstractWorkingMemory.java:729) > at > org.drools.impl.StatefulKnowledgeSessionImpl.fireUntilHalt(StatefulKnowledgeSessionImpl.java:234) > at > com.wordpress.salaboy.hospital.HospitalServiceImpl$1.run(HospitalServiceImpl.java:71) > > I will comment the lines that you mention and go back with my simple > project url and the version of WSO2 AS that I'm using. > The whole installation and configuration should take only 5 minutes + the > download time of WSO2 that is about 150mgs. > Thanks for the help! > Cheers > > On Tue, Nov 15, 2011 at 1:09 PM, Salaboy <sala...@gmail.com> wrote: > >> Hi Mario thanks! Give me an hour and I will get back with more details! >> >> >> - CTO @ http://www.plugtree.com >> - MyJourney @ http://salaboy.wordpress.com >> - Co-Founder @ http://www.jbug.com.ar >> - Mauricio "Salaboy" Salatino - >> >> On 15/11/2011, at 12:47, Mario Fusco <mario.fu...@gmail.com> wrote: >> >> Mauricio, >> >> I am the author of that change, so maybe I can help. >> >> First of all it seems weird to me that both the 5.3.0-Final and the >> 5.4.0-SNAPSHOT fail in the same way. I suppose the exception thrown by the >> 5.3 should be at least slightly different because it uses a different >> implementation of the ConsequenceGenerator. If so could you please send >> also the exception you get with the 5.3? >> >> Moreover I honestly don't know what WSO2 is but I guess this issue could >> be related with some specific constraint in its ClassLoader. Could you give >> me some more info in order to allow me to reproduce the same problem? By >> the way, does it happens with any rules or do you have a specific use case >> that causes this problem? >> >> In the end I can give you a quick workaround, but you will have to change >> the Drools source and of course recompile it. If you can do that you have >> to go to the JavaDialect class: >> >> >> https://github.com/droolsjbpm/drools/blob/master/drools-compiler/src/main/java/org/drools/rule/builder/dialect/java/JavaDialect.java#L92 >> >> comment all the lines using the new ASM*Builders (94, 98, 102, 106) and >> uncomment the lines for the corresponding Java*Builer (92, 96, 100, 104). I >> know this is not the ideal solution, but at least it will allow us to >> figure out if the problem is actually where I am supposing. >> >> I could easily implement a fallback mechanism that will use the old >> Builders if the new ones fail for some reason, but before to do that I'd >> like to understand what's going on. So it will be great if you could send >> be some more details to help me to figure out what's wrong. >> >> I hope this helps, >> Mario >> >> On Tue, Nov 15, 2011 at 4:14 PM, Mauricio Salatino <sala...@gmail.com>wrote: >> >>> Hi guys, >>> I'm working here trying to find out a little problem that I'm having >>> with Drools 5.4.0-SNAPSHOT and 5.3.0-Final. >>> I'm using WSO2 container to deploy a very simple service and when a rule >>> gets activated the following exception appears (with 5.4.0-SNAPSHOT): >>> >>> Exception in thread "Thread-44" java.lang.ClassCircularityError: >>> org/drools/rule/builder/dialect/asm/ConsequenceGenerator >>> at java.lang.Class.forName0(Native Method) >>> at java.lang.Class.forName(Class.java:247) >>> at >>> org.drools.util.CompositeClassLoader$CachingLoader.load(CompositeClassLoader.java:262) >>> at >>> org.drools.util.CompositeClassLoader.loadClass(CompositeClassLoader.java:105) >>> at >>> org.drools.rule.JavaDialectRuntimeData$PackageClassLoader.loadClass(JavaDialectRuntimeData.java:540) >>> at java.lang.ClassLoader.loadClass(ClassLoader.java:247) >>> at >>> org.eclipse.core.runtime.internal.adaptor.ContextFinder.loadClass(ContextFinder.java:124) >>> at java.lang.ClassLoader.loadClass(ClassLoader.java:247) >>> at java.lang.Class.forName0(Native Method) >>> at java.lang.Class.forName(Class.java:247) >>> at >>> org.drools.util.CompositeClassLoader$CachingLoader.load(CompositeClassLoader.java:262) >>> at >>> org.drools.util.CompositeClassLoader.loadClass(CompositeClassLoader.java:105) >>> at >>> org.drools.rule.JavaDialectRuntimeData$PackageClassLoader.loadClass(JavaDialectRuntimeData.java:540) >>> at java.lang.ClassLoader.loadClass(ClassLoader.java:247) >>> at >>> test.Rule_request_bed_ede4a687c29740c8bb9f13968941e6a1DefaultConsequenceInvoker.evaluate(Unknown >>> Source) >>> at >>> org.drools.common.DefaultAgenda.fireActivation(DefaultAgenda.java:1091) >>> at org.drools.common.DefaultAgenda.fireNextItem(DefaultAgenda.java:1029) >>> at >>> org.drools.common.DefaultAgenda.fireUntilHalt(DefaultAgenda.java:1229) >>> at >>> org.drools.common.AbstractWorkingMemory.fireUntilHalt(AbstractWorkingMemory.java:756) >>> at >>> org.drools.common.AbstractWorkingMemory.fireUntilHalt(AbstractWorkingMemory.java:732) >>> at >>> org.drools.impl.StatefulKnowledgeSessionImpl.fireUntilHalt(StatefulKnowledgeSessionImpl.java:234) >>> at >>> com.wordpress.salaboy.hospital.HospitalServiceImpl$1.run(HospitalServiceImpl.java:71) >>> >>> I'm worried to see that I don't have any problems with 5.1.1 but with >>> later version all throw similar issues. >>> I will be trying to solve this issue, but if someone has a clue about >>> what can be happening here, please let me know. >>> >>> I know that this can be a particular issue with WSO2, but it looks like >>> something has changed inside drools. >>> >>> Cheers >>> >>> >>> -- >>> - CTO @ http://www.plugtree.com >>> - MyJourney @ http://salaboy.wordpress.com >>> - Co-Founder @ http://www.jugargentina.org >>> - Co-Founder @ http://www.jbug.com.ar >>> >>> - Salatino "Salaboy" Mauricio - >>> >>> >>> _______________________________________________ >>> rules-dev mailing list >>> rules-...@lists.jboss.org >>> https://lists.jboss.org/mailman/listinfo/rules-dev >>> >>> >> _______________________________________________ >> rules-dev mailing list >> rules-...@lists.jboss.org >> https://lists.jboss.org/mailman/listinfo/rules-dev >> >> > > > -- > - CTO @ http://www.plugtree.com > - MyJourney @ http://salaboy.wordpress.com > - Co-Founder @ http://www.jugargentina.org > - Co-Founder @ http://www.jbug.com.ar > > - Salatino "Salaboy" Mauricio - > > -- - CTO @ http://www.plugtree.com - MyJourney @ http://salaboy.wordpress.com - Co-Founder @ http://www.jugargentina.org - Co-Founder @ http://www.jbug.com.ar - Salatino "Salaboy" Mauricio -
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