[jboss-jira] [JBoss JIRA] (DROOLS-4952) drools-7.31 expert missing/ dropped ProjectClassLoader class?

[Mario Fusco (Jira)]

     [ https://issues.redhat.com/browse/DROOLS-4952?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Mario Fusco updated DROOLS-4952:
--------------------------------
    Sprint: 2020 Week 04-06 (from Jan 20)


> drools-7.31 expert missing/ dropped ProjectClassLoader class?
> -------------------------------------------------------------
>
>                 Key: DROOLS-4952
>                 URL: https://issues.redhat.com/browse/DROOLS-4952
>             Project: Drools
>          Issue Type: Bug
>          Components: core engine
>    Affects Versions: 7.31.0.Final
>            Reporter: John Harrison
>            Assignee: Mario Fusco
>            Priority: Major
>
> I'm compiling/ running rules using expert (drools-7.31) and java 13.0.1, and getting errors like the following:
> {code:java}
> java.lang.NoClassDefFoundError: org/drools/reflective/classloader/ProjectClassLoader
> [context - 1447]:   at org.drools.core.impl.KnowledgeBaseFactory.newKnowledgeBase(KnowledgeBaseFactory.java:106)
> [context - 1447]:   at org.drools.core.impl.KnowledgeBaseFactory.newKnowledgeBase(KnowledgeBaseFactory.java:80)
> [context - 1447]:   at org.drools.core.impl.KnowledgeBaseFactory.newKnowledgeBase(KnowledgeBaseFactory.java:64)
> [context - 1447]:   at Reason$Descriptor.reason(Reason.java:459)
> [context - 1447]:   at Reason.lambda$run$1(Reason.java:82)
> [context - 1447]:   at io.javalin.core.security.SecurityUtil.noopAccessManager(SecurityUtil.kt:22)
> [context - 1447]:   at io.javalin.http.JavalinServlet$addHandler$protectedHandler$1.handle(JavalinServlet.kt:116)
> [context - 1447]:   at io.javalin.http.JavalinServlet$service$2$1.invoke(JavalinServlet.kt:45)
> [context - 1447]:   at io.javalin.http.JavalinServlet$service$2$1.invoke(JavalinServlet.kt:24)
> [context - 1447]:   at io.javalin.http.JavalinServlet$service$1.invoke(JavalinServlet.kt:123)
> [context - 1447]:   at io.javalin.http.JavalinServlet$service$2.invoke(JavalinServlet.kt:40)
> [context - 1447]:   at io.javalin.http.JavalinServlet.service(JavalinServlet.kt:75)
> [context - 1447]:   at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)
> [context - 1447]:   at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:867)
> [context - 1447]:   at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:542)
> [context - 1447]:   at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:255)
> [context - 1447]:   at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:1588)
> [context - 1447]:   at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:255)
> [context - 1447]:   at io.javalin.core.JavalinServer$start$httpHandler$1.doHandle(JavalinServer.kt:53)
> [context - 1447]:   at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:203)
> [context - 1447]:   at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:480)
> [context - 1447]:   at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:1557)
> [context - 1447]:   at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:201)
> [context - 1447]:   at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1247)
> [context - 1447]:   at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:144)
> [context - 1447]:   at org.eclipse.jetty.server.handler.HandlerList.handle(HandlerList.java:61)
> [context - 1447]:   at org.eclipse.jetty.server.handler.StatisticsHandler.handle(StatisticsHandler.java:174)
> [context - 1447]:   at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:132)
> [context - 1447]:   at org.eclipse.jetty.server.Server.handle(Server.java:502)
> [context - 1447]:   at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:364)
> [context - 1447]:   at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:260)
> [context - 1447]:   at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:305)
> [context - 1447]:   at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:103)
> [context - 1447]:   at org.eclipse.jetty.io.ChannelEndPoint$2.run(ChannelEndPoint.java:118)
> [context - 1447]:   at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.runTask(EatWhatYouKill.java:333)
> [context - 1447]:   at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.doProduce(EatWhatYouKill.java:310)
> [context - 1447]:   at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.tryProduce(EatWhatYouKill.java:168)
> [context - 1447]:   at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.run(EatWhatYouKill.java:126)
> [context - 1447]:   at org.eclipse.jetty.util.thread.ReservedThreadExecutor$ReservedThread.run(ReservedThreadExecutor.java:366)
> [context - 1447]:   at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:765)
> [context - 1447]:   at org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:683)
> [context - 1447]:   at java.base/java.lang.Thread.run(Thread.java:830)
> [context - 1447]: Caused by: java.lang.ClassNotFoundException: org.drools.reflective.classloader.ProjectClassLoader
> [context - 1447]:   at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:602)
> [context - 1447]:   at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:178)
> [context - 1447]:   at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:521)
> [context - 1447]:   ... 42 more
> {code}
> Is this class missing or removed from the distribution? The related release notes don't mention anything, and things work fine in drools-7.30 (class located in drools-core-7.30.0.Final.jar).



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