Rocky T [https://community.jboss.org/people/rocky13] created the discussion

"Not able to create KnowledgeBuilder..please help jbpm 5.4"

To view the discussion, visit: https://community.jboss.org/message/796949#796949

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Hi All,


I am trying to develop simple web application.where i am just clicking on a 
submit button to start the process.But its failing.Here is the error
I have attached war file and server logs as well


Class which is trying to create this KnowledgeBase is :-KBaseService.java
Does anyone know how t resolve this?







17:00:50,746 WARN  [org.jboss.modules] (http-localhost-127.0.0.1-8080-2) Failed 
to define class 
org.drools.rule.builder.MVELConstraintBuilder$StringCoercionCompatibilityEvaluator
 in Module "deployment.aots.war:main" from Service Module Loader: 
java.lang.LinkageError: Failed to link 
org/drools/rule/builder/MVELConstraintBuilder$StringCoercionCompatibilityEvaluator
 (Module "deployment.aots.war:main" from Service Module Loader)

    at 
org.jboss.modules.ModuleClassLoader.defineClass(ModuleClassLoader.java:396)
    at 
org.jboss.modules.ModuleClassLoader.loadClassLocal(ModuleClassLoader.java:243)

    at 
org.jboss.modules.ModuleClassLoader$1.loadClassLocal(ModuleClassLoader.java:73)
    at org.jboss.modules.Module.loadModuleClass(Module.java:517)
    at org.jboss.modules.ModuleClassLoader.findClass(ModuleClassLoader.java:182)
    at 
org.jboss.modules.ConcurrentClassLoader.performLoadClassUnchecked(ConcurrentClassLoader.java:468)
    at 
org.jboss.modules.ConcurrentClassLoader.performLoadClassChecked(ConcurrentClassLoader.java:456)
    at 
org.jboss.modules.ConcurrentClassLoader.performLoadClassChecked(ConcurrentClassLoader.java:423)
    at 
org.jboss.modules.ConcurrentClassLoader.performLoadClass(ConcurrentClassLoader.java:398)
    at 
org.jboss.modules.ConcurrentClassLoader.loadClass(ConcurrentClassLoader.java:120)
    at 
org.drools.rule.builder.MVELConstraintBuilder.<clinit>(MVELConstraintBuilder.java:48)
 [drools-compiler-5.5.0.Final.jar:5.5.0.Final]
    at 
org.drools.rule.builder.DefaultConstraintBuilderFactory.<clinit>(DefaultConstraintBuilderFactory.java:6)
 [drools-compiler-5.5.0.Final.jar:5.5.0.Final]
    at 
org.drools.rule.builder.DroolsCompilerComponentFactory.<init>(DroolsCompilerComponentFactory.java:11)
 [drools-compiler-5.5.0.Final.jar:5.5.0.Final]
    at 
org.drools.compiler.PackageBuilderConfiguration.init(PackageBuilderConfiguration.java:210)
 [drools-compiler-5.5.0.Final.jar:5.5.0.Final]
    at 
org.drools.compiler.PackageBuilderConfiguration.<init>(PackageBuilderConfiguration.java:170)
 [drools-compiler-5.5.0.Final.jar:5.5.0.Final]
    at org.drools.compiler.PackageBuilder.<init>(PackageBuilder.java:300) 
[drools-compiler-5.5.0.Final.jar:5.5.0.Final]
    at org.drools.compiler.PackageBuilder.<init>(PackageBuilder.java:228) 
[drools-compiler-5.5.0.Final.jar:5.5.0.Final]
    at 
org.drools.builder.impl.KnowledgeBuilderFactoryServiceImpl.newKnowledgeBuilder(KnowledgeBuilderFactoryServiceImpl.java:34)
 [drools-compiler-5.5.0.Final.jar:5.5.0.Final]
    at 
org.drools.builder.KnowledgeBuilderFactory.newKnowledgeBuilder(KnowledgeBuilderFactory.java:46)
 [knowledge-api-5.5.0.Final.jar:5.5.0.Final]
    at 
com.sample.processserver.KBaseService.readKnowledgeBase(KBaseService.java:44) 
[classes:]
    at 
com.sample.processserver.KBaseService.getKnowlegdeBase(KBaseService.java:22) 
[classes:]
    at 
com.sample.processserver.TaskProcessServlet.startMyProcess(TaskProcessServlet.java:58)
 [classes:]
    at 
com.sample.processserver.TaskProcessServlet.doGet(TaskProcessServlet.java:35) 
[classes:]
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:734) 
[jboss-servlet-api_3.0_spec-1.0.0.Final.jar:1.0.0.Final]
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:847) 
[jboss-servlet-api_3.0_spec-1.0.0.Final.jar:1.0.0.Final]
    at 
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:329)
 [jbossweb-7.0.13.Final.jar:]
    at 
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:248)
 [jbossweb-7.0.13.Final.jar:]
    at 
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:275)
 [jbossweb-7.0.13.Final.jar:]
    at 
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:161)
 [jbossweb-7.0.13.Final.jar:]
    at 
org.jboss.as.jpa.interceptor.WebNonTxEmCloserValve.invoke(WebNonTxEmCloserValve.java:50)
 [jboss-as-jpa-7.1.1.Final.jar:7.1.1.Final]
    at 
org.jboss.as.web.security.SecurityContextAssociationValve.invoke(SecurityContextAssociationValve.java:153)
 [jboss-as-web-7.1.1.Final.jar:7.1.1.Final]
    at 
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:155) 
[jbossweb-7.0.13.Final.jar:]
    at 
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) 
[jbossweb-7.0.13.Final.jar:]

    at 
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
 [jbossweb-7.0.13.Final.jar:]
    at 
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:368) 
[jbossweb-7.0.13.Final.jar:]
    at 
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:877) 
[jbossweb-7.0.13.Final.jar:]
    at 
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:671)
 [jbossweb-7.0.13.Final.jar:]

    at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:930) 
[jbossweb-7.0.13.Final.jar:]
    at java.lang.Thread.run(Thread.java:662) [rt.jar:1.6.0_31]
Caused by: java.lang.NoClassDefFoundError: 
org/mvel2/util/CompatibilityStrategy$DefaultCompatibilityEvaluator
    at java.lang.ClassLoader.defineClass1(Native Method) [rt.jar:1.6.0_31]
    at java.lang.ClassLoader.defineClassCond(ClassLoader.java:631) 
[rt.jar:1.6.0_31]
    at java.lang.ClassLoader.defineClass(ClassLoader.java:615) [rt.jar:1.6.0_31]
    at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:141) 
[rt.jar:1.6.0_31]
    at 
org.jboss.modules.ModuleClassLoader.doDefineOrLoadClass(ModuleClassLoader.java:327)
    at 
org.jboss.modules.ModuleClassLoader.defineClass(ModuleClassLoader.java:391)
    ... 38 more
Caused by: java.lang.ClassNotFoundException: 
org.mvel2.util.CompatibilityStrategy$DefaultCompatibilityEvaluator from [Module 
"deployment.aots.war:main" from Service Module Loader]
    at org.jboss.modules.ModuleClassLoader.findClass(ModuleClassLoader.java:190)
    at 
org.jboss.modules.ConcurrentClassLoader.performLoadClassUnchecked(ConcurrentClassLoader.java:468)
    at 
org.jboss.modules.ConcurrentClassLoader.performLoadClassChecked(ConcurrentClassLoader.java:456)
    at 
org.jboss.modules.ConcurrentClassLoader.performLoadClassChecked(ConcurrentClassLoader.java:423)
    at 
org.jboss.modules.ConcurrentClassLoader.performLoadClassChecked(ConcurrentClassLoader.java:423)
    at 
org.jboss.modules.ConcurrentClassLoader.performLoadClass(ConcurrentClassLoader.java:398)

    at 
org.jboss.modules.ConcurrentClassLoader.loadClass(ConcurrentClassLoader.java:120)
    ... 44 more


17:00:50,840 ERROR [stderr] (http-localhost-127.0.0.1-8080-2) 
java.lang.NoClassDefFoundError: 
org/drools/rule/builder/MVELConstraintBuilder$StringCoercionCompatibilityEvaluator
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