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Migrate Drools 4.0.7 from JBoss 4.2.3 to JBoss7
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created by <a href="https://community.jboss.org/people/juhu182">Christian Wahl</a> in <i>Beginner's Corner</i> - <a href="https://community.jboss.org/message/737658#737658">View the full discussion</a>
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<div class="jive-rendered-content"><p>Hey folks,</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>I migrate an application from JBoss 4.2.3 to JBoss 7. The application uses Drools 4.0.7. (and I´m noob to Drools and JBoss)</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>In the old JBoss version the drl files were not included in the EAR file. The conf folder was the directory for the drl files. We´d like to keep the structure in JBoss7 and use the JBoss\standalone\configuration for the files.<br/>So I put the Drools JAR files in the lib directory. Then I configured the path to the drl files in my application to JBoss\standalone\configuration. When I start the server I get a (lot of) warning(s) like: </p><p>(alpha, beta are placeholder[company issues])</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p><span style="font-size: 8pt;">12:15:37,966 WARN  [org.jboss.modules] (MSC service thread 1-4) Failed to define class de.alpha.beta.model.tcws in Module "deployment.beta-ear.ear.beta-ejb.jar:main" from Service Module Loader: java.lang.LinkageError: Failed to link de/alpha/beta/model/tcws (Module "deployment.beta-ear.ear.beta-ejb.jar:main" from Service Module Loader)</span></p><p><span style="font-size: 8pt;">    at org.jboss.modules.ModuleClassLoader.defineClass(ModuleClassLoader.java:396)</span></p><p><span style="font-size: 8pt;">    at org.jboss.modules.ModuleClassLoader.loadClassLocal(ModuleClassLoader.java:243)</span></p><p><span style="font-size: 8pt;">    at org.jboss.modules.ModuleClassLoader$1.loadClassLocal(ModuleClassLoader.java:73)</span></p><p><span style="font-size: 8pt;">    at org.jboss.modules.Module.loadModuleClass(Module.java:517)</span></p><p><span style="font-size: 8pt;">    at org.jboss.modules.ModuleClassLoader.findClass(ModuleClassLoader.java:182)</span></p><p><span style="font-size: 8pt;">    at org.jboss.modules.ConcurrentClassLoader.performLoadClassUnchecked(ConcurrentClassLoader.java:468)</span></p><p><span style="font-size: 8pt;">    at org.jboss.modules.ConcurrentClassLoader.performLoadClassChecked(ConcurrentClassLoader.java:456)</span></p><p><span style="font-size: 8pt;">    at org.jboss.modules.ConcurrentClassLoader.performLoadClass(ConcurrentClassLoader.java:398)</span></p><p><span style="font-size: 8pt;">    at org.jboss.modules.ConcurrentClassLoader.loadClass(ConcurrentClassLoader.java:120)</span></p><p><span style="font-size: 8pt;">    at org.mvel.ParserContext.checkForDynsarvamicImport(ParserContext.java:128) [mvel14.jar:]</span></p><p><span style="font-size: 8pt;">    at org.mvel.ParserContext.hasImport(ParserContext.java:163) [mvel14.jar:]</span></p><p><span style="font-size: 8pt;">    at org.mvel.PropertyVerifier.getBeanProperty(PropertyVerifier.java:96) [mvel14.jar:]</span></p><p><span style="font-size: 8pt;">    at org.mvel.PropertyVerifier.analyze(PropertyVerifier.java:73) [mvel14.jar:]</span></p><p><span style="font-size: 8pt;">    at org.mvel.ExpressionCompiler.verify(ExpressionCompiler.java:257) [mvel14.jar:]</span></p><p><span style="font-size: 8pt;">    at org.mvel.ExpressionCompiler._compile(ExpressionCompiler.java:190) [mvel14.jar:]</span></p><p><span style="font-size: 8pt;">    at org.mvel.ExpressionCompiler.compile(ExpressionCompiler.java:31) [mvel14.jar:]</span></p><p><span style="font-size: 8pt;">    at org.drools.rule.builder.dialect.mvel.MVELDialect.compile(MVELDialect.java:387) [drools-compiler-4.0.7.jar:4.0.7]</span></p><p><span style="font-size: 8pt;">    at org.drools.rule.builder.dialect.mvel.MVELPredicateBuilder.build(MVELPredicateBuilder.java:69) [drools-compiler-4.0.7.jar:4.0.7]</span></p><p><span style="font-size: 8pt;">    at org.drools.rule.builder.PatternBuilder.build(PatternBuilder.java:553) [drools-compiler-4.0.7.jar:4.0.7]</span></p><p><span style="font-size: 8pt;">    at org.drools.rule.builder.PatternBuilder.rewriteToEval(PatternBuilder.java:388) [drools-compiler-4.0.7.jar:4.0.7]</span></p><p><span style="font-size: 8pt;">    at org.drools.rule.builder.PatternBuilder.build(PatternBuilder.java:273) [drools-compiler-4.0.7.jar:4.0.7]</span></p><p><span style="font-size: 8pt;">    at org.drools.rule.builder.PatternBuilder.buildConstraint(PatternBuilder.java:199) [drools-compiler-4.0.7.jar:4.0.7]</span></p><p><span style="font-size: 8pt;">    at org.drools.rule.builder.PatternBuilder.build(PatternBuilder.java:168) [drools-compiler-4.0.7.jar:4.0.7]</span></p><p><span style="font-size: 8pt;">    at org.drools.rule.builder.PatternBuilder.build(PatternBuilder.java:93) [drools-compiler-4.0.7.jar:4.0.7]</span></p><p><span style="font-size: 8pt;">    at org.drools.rule.builder.GroupElementBuilder.build(GroupElementBuilder.java:69) [drools-compiler-4.0.7.jar:4.0.7]</span></p><p><span style="font-size: 8pt;">    at org.drools.rule.builder.RuleBuilder.build(RuleBuilder.java:53) [drools-compiler-4.0.7.jar:4.0.7]</span></p><p><span style="font-size: 8pt;">    at org.drools.compiler.PackageBuilder.addRule(PackageBuilder.java:446) [drools-compiler-4.0.7.jar:4.0.7]</span></p><p><span style="font-size: 8pt;">    at org.drools.compiler.PackageBuilder.addPackage(PackageBuilder.java:304) [drools-compiler-4.0.7.jar:4.0.7]</span></p><p><span style="font-size: 8pt;">    at org.drools.compiler.PackageBuilder.addPackageFromDrl(PackageBuilder.java:167) [drools-compiler-4.0.7.jar:4.0.7]</span></p><p><span style="font-size: 8pt;">    at de.alpha.beta.config.RuleConfigHandlerBean.createRulePackage(RuleConfigHandlerBean.java:748) [beta-ejb.jar:4.2.2-b5]</span></p><p><span style="font-size: 8pt;">    at de.</span><span style="font-size: 8pt;">alpha</span><span style="font-size: 8pt;">.beta.config.RuleConfigHandlerBean.createRuleBase(RuleConfigHandlerBean.java:672) [</span><span style="font-size: 8pt;">beta</span><span style="font-size: 8pt;">-ejb.jar:4.2.2-b5]</span></p><p><span style="font-size: 8pt;">    at de.</span><span style="font-size: 8pt;">alpha</span><span style="font-size: 8pt;">.beta.config.RuleConfigHandlerBean.loadDefaultRules(RuleConfigHandlerBean.java:649) [</span><span style="font-size: 8pt;">beta</span><span style="font-size: 8pt;">-ejb.jar:4.2.2-b5]</span></p><p><span style="font-size: 8pt;">    at de.</span><span style="font-size: 8pt;">alpha</span><span style="font-size: 8pt;">.beta.config.RuleConfigHandlerBean.loadDefaultRuleset(RuleConfigHandlerBean.java:159) [</span><span style="font-size: 8pt;">beta</span><span style="font-size: 8pt;">-ejb.jar:4.2.2-b5]</span></p><p><span style="font-size: 8pt;">    at de.</span><span style="font-size: 8pt;">alpha</span><span style="font-size: 8pt;">.beta.config.RuleConfigHandlerBean.<clinit>(RuleConfigHandlerBean.java:134) [</span><span style="font-size: 8pt;">beta</span><span style="font-size: 8pt;">-ejb.jar:4.2.2-b5]</span></p><p><span style="font-size: 8pt;">    at sun.misc.Unsafe.ensureClassInitialized(Native Method) [rt.jar:1.6.0_26]</span></p><p><span style="font-size: 8pt;">    at sun.reflect.UnsafeFieldAccessorFactory.newFieldAccessor(Unknown Source) [rt.jar:1.6.0_26]</span></p><p><span style="font-size: 8pt;">    at sun.reflect.ReflectionFactory.newFieldAccessor(Unknown Source) [rt.jar:1.6.0_26]</span></p><p><span style="font-size: 8pt;">    at java.lang.reflect.Field.acquireFieldAccessor(Unknown Source) [rt.jar:1.6.0_26]</span></p><p><span style="font-size: 8pt;">    at java.lang.reflect.Field.getFieldAccessor(Unknown Source) [rt.jar:1.6.0_26]</span></p><p><span style="font-size: 8pt;">    at java.lang.reflect.Field.set(Unknown Source) [rt.jar:1.6.0_26]</span></p><p><span style="font-size: 8pt;">    at org.jboss.seam.util.Reflections.set(Reflections.java:64) [jboss-seam.jar:2.0.3.CR1]</span></p><p><span style="font-size: 8pt;">    at org.jboss.seam.util.Reflections.setAndWrap(Reflections.java:106) [jboss-seam.jar:2.0.3.CR1]</span></p><p><span style="font-size: 8pt;">    at org.jboss.seam.Component.scanField(Component.java:839) [jboss-seam.jar:2.0.3.CR1]</span></p><p><span style="font-size: 8pt;">    at org.jboss.seam.Component.initMembers(Component.java:537) [jboss-seam.jar:2.0.3.CR1]</span></p><p><span style="font-size: 8pt;">    at org.jboss.seam.Component.<init>(Component.java:254) [jboss-seam.jar:2.0.3.CR1]</span></p><p><span style="font-size: 8pt;">    at org.jboss.seam.Component.<init>(Component.java:217) [jboss-seam.jar:2.0.3.CR1]</span></p><p><span style="font-size: 8pt;">    at org.jboss.seam.init.Initialization.addComponent(Initialization.java:974) [jboss-seam.jar:2.0.3.CR1]</span></p><p><span style="font-size: 8pt;">    at org.jboss.seam.init.Initialization.installComponents(Initialization.java:911) [jboss-seam.jar:2.0.3.CR1]</span></p><p><span style="font-size: 8pt;">    at org.jboss.seam.init.Initialization.init(Initialization.java:589) [jboss-seam.jar:2.0.3.CR1]</span></p><p><span style="font-size: 8pt;">    at org.jboss.seam.servlet.SeamListener.contextInitialized(SeamListener.java:34) [jboss-seam.jar:2.0.3.CR1]</span></p><p><span style="font-size: 8pt;">    at org.apache.catalina.core.StandardContext.contextListenerStart(StandardContext.java:3392) [jbossweb-7.0.13.Final.jar:]</span></p><p><span style="font-size: 8pt;">    at org.apache.catalina.core.StandardContext.start(StandardContext.java:3850) [jbossweb-7.0.13.Final.jar:]</span></p><p><span style="font-size: 8pt;">    at org.jboss.as.web.deployment.WebDeploymentService.start(WebDeploymentService.java:90) [jboss-as-web-7.1.1.Final.jar:7.1.1.Final]</span></p><p><span style="font-size: 8pt;">    at org.jboss.msc.service.ServiceControllerImpl$StartTask.startService(ServiceControllerImpl.java:1811)</span></p><p><span style="font-size: 8pt;">    at org.jboss.msc.service.ServiceControllerImpl$StartTask.run(ServiceControllerImpl.java:1746)</span></p><p><span style="font-size: 8pt;">    at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown Source) [rt.jar:1.6.0_26]</span></p><p><span style="font-size: 8pt;">    at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) [rt.jar:1.6.0_26]</span></p><p><span style="font-size: 8pt;">    at java.lang.Thread.run(Unknown Source) [rt.jar:1.6.0_26]</span></p><p><span style="font-size: 8pt;">Caused by: java.lang.NoClassDefFoundError: de/alpha/beta/model/tcws (wrong name: de/alpha/beta/model/TCWS)</span></p><p><span style="font-size: 8pt;">    at java.lang.ClassLoader.defineClass1(Native Method) [rt.jar:1.6.0_26]</span></p><p><span style="font-size: 8pt;">    at java.lang.ClassLoader.defineClassCond(Unknown Source) [rt.jar:1.6.0_26]</span></p><p><span style="font-size: 8pt;">    at java.lang.ClassLoader.defineClass(Unknown Source) [rt.jar:1.6.0_26]</span></p><p><span style="font-size: 8pt;">    at java.security.SecureClassLoader.defineClass(Unknown Source) [rt.jar:1.6.0_26]</span></p><p><span style="font-size: 8pt;">    at org.jboss.modules.ModuleClassLoader.doDefineOrLoadClass(ModuleClassLoader.java:327)</span></p><p><span style="font-size: 8pt;">    at org.jboss.modules.ModuleClassLoader.defineClass(ModuleClassLoader.java:391)</span></p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>The Drools are called from the beta-ejb.jar. The directorys in my EAR file are    lib,    META-INF,   <span style="font-size: 10pt;"> beta.war,    beta-ejb.jar,    beta-test-ejb.jar</span></p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p><span style="font-size: 10pt;">I´d like to know:</span></p><p><span style="font-size: 10pt;">1. Is it possible to use Drools 4.0.7 with JBoss 7?</span></p><p><span style="font-size: 10pt;">2. C</span><span style="font-size: 10pt;">an configure the path where the Drools lookup the classes?</span></p><p><span style="font-size: 10pt;">3. What the hell is wrong? It seems like the Drools tool can not find my classes, or am I wrong?</span></p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>I googled a time and found nothing. But I think these are easy questions for the JBoss/Drools masters in this community!</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>With hope and regards,</p><p>Christian</p></div>
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