I also posted on stackoverflow , I hope it's not a problem. I doubt I'll get an answer there.

I just switched from glassfish to wildfly 9 and I would like to use Eclipselink since it is what I was using before. I added the eclipselink.jar in the C:\wildfly-9.0.2.Final\modules\system\layers\base\org\eclipse\persistence\main folder. And did the following

added to module.xml :

   <resource-root path="eclipselink.jar"> <filter> <exclude path="javax/**" /> </filter>

in persistence.xml :

<provider>org.eclipse.persistence.jpa.PersistenceProvider</provider>

error :

16:53:17,021 WARN  [org.jboss.modules] (ServerService Thread Pool -- 58) Failed to define class org.eclipse.persistence.jpa.rs.exceptions.JPARSExceptionMapper in Module "org.eclipse.persistence:main" from local module loader @45283ce2 (finder: local module finder @2077d4de (roots: C:\wildfly-9.0.2.Final\modules,C:\wildfly-9.0.2.Final\modules\system\layers\base)): java.lang.LinkageError: Failed to link org/eclipse/persistence/jpa/rs/exceptions/JPARSExceptionMapper (Module "org.eclipse.persistence:main" from local module loader @45283ce2 (finder: local module finder @2077d4de (roots: C:\wildfly-9.0.2.Final\modules,C:\wildfly-9.0.2.Final\modules\system\layers\base))) at org.jboss.modules.ModuleClassLoader.defineClass(ModuleClassLoader.java:437) at org.jboss.modules.ModuleClassLoader.loadClassLocal(ModuleClassLoader.java:269) at org.jboss.modules.ModuleClassLoader$1.loadClassLocal(ModuleClassLoader.java:77) at org.jboss.modules.Module.loadModuleClass(Module.java:560) at org.jboss.modules.ModuleClassLoader.findClass(ModuleClassLoader.java:197) at org.jboss.modules.ConcurrentClassLoader.performLoadClassUnchecked(ConcurrentClassLoader.java:455) at org.jboss.modules.ConcurrentClassLoader.performLoadClassChecked(ConcurrentClassLoader.java:404) at org.jboss.modules.ConcurrentClassLoader.performLoadClass(ConcurrentClassLoader.java:385) at org.jboss.modules.ConcurrentClassLoader.loadClass(ConcurrentClassLoader.java:130) at org.eclipse.persistence.jpa.rs.service.JPARSApplication.<init>(JPARSApplication.java:65) at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:422) at org.jboss.resteasy.core.ConstructorInjectorImpl.construct(ConstructorInjectorImpl.java:148) at org.jboss.resteasy.spi.ResteasyProviderFactory.createProviderInstance(ResteasyProviderFactory.java:2211) at org.jboss.resteasy.spi.ResteasyDeployment.createApplication(ResteasyDeployment.java:295) at org.jboss.resteasy.spi.ResteasyDeployment.start(ResteasyDeployment.java:236) at org.jboss.resteasy.plugins.server.servlet.ServletContainerDispatcher.init(ServletContainerDispatcher.java:112) at org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher.init(HttpServletDispatcher.java:36) at io.undertow.servlet.core.LifecyleInterceptorInvocation.proceed(LifecyleInterceptorInvocation.java:117) at org.wildfly.extension.undertow.security.RunAsLifecycleInterceptor.init(RunAsLifecycleInterceptor.java:78) at io.undertow.servlet.core.LifecyleInterceptorInvocation.proceed(LifecyleInterceptorInvocation.java:103) at io.undertow.servlet.core.ManagedServlet$DefaultInstanceStrategy.start(ManagedServlet.java:230) at io.undertow.servlet.core.ManagedServlet.createServlet(ManagedServlet.java:131) at io.undertow.servlet.core.DeploymentManagerImpl.start(DeploymentManagerImpl.java:511) at org.wildfly.extension.undertow.deployment.UndertowDeploymentService.startContext(UndertowDeploymentService.java:101) at org.wildfly.extension.undertow.deployment.UndertowDeploymentService$1.run(UndertowDeploymentService.java:82) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.run(FutureTask.java:266) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) at java.lang.Thread.run(Thread.java:745) at org.jboss.threads.JBossThread.run(JBossThread.java:320) Caused by: java.lang.NoClassDefFoundError: javax/ws/rs/ext/ExceptionMapper at java.lang.ClassLoader.defineClass1(Native Method) at java.lang.ClassLoader.defineClass(ClassLoader.java:760) at org.jboss.modules.ModuleClassLoader.doDefineOrLoadClass(ModuleClassLoader.java:353) at org.jboss.modules.ModuleClassLoader.defineClass(ModuleClassLoader.java:432) ... 33 more Caused by: java.lang.ClassNotFoundException: javax.ws.rs.ext.ExceptionMapper from [Module "org.eclipse.persistence:main" from local module loader @45283ce2 (finder: local module finder @2077d4de (roots: C:\wildfly-9.0.2.Final\modules,C:\wildfly-9.0.2.Final\modules\system\layers\base))] at org.jboss.modules.ModuleClassLoader.findClass(ModuleClassLoader.java:205) at org.jboss.modules.ConcurrentClassLoader.performLoadClassUnchecked(ConcurrentClassLoader.java:455) at org.jboss.modules.ConcurrentClassLoader.performLoadClassChecked(ConcurrentClassLoader.java:404) at org.jboss.modules.ConcurrentClassLoader.performLoadClass(ConcurrentClassLoader.java:385) at org.jboss.modules.ConcurrentClassLoader.loadClass(ConcurrentClassLoader.java:130) ... 37 more  16:53:17,022 ERROR [org.jboss.msc.service.fail] (ServerService Thread Pool -- 58) MSC000001: Failed to start service jboss.undertow.deployment.default-server.default-host./csbasement: org.jboss.msc.service.StartException in service jboss.undertow.deployment.default-server.default-host./csbasement: java.lang.RuntimeException: Failed to construct public org.eclipse.persistence.jpa.rs.service.JPARSApplication() at org.wildfly.extension.undertow.deployment.UndertowDeploymentService$1.run(UndertowDeploymentService.java:85) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.run(FutureTask.java:266) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) at java.lang.Thread.run(Thread.java:745) at org.jboss.threads.JBossThread.run(JBossThread.java:320) Caused by: java.lang.RuntimeException: Failed to construct public org.eclipse.persistence.jpa.rs.service.JPARSApplication() at org.jboss.resteasy.core.ConstructorInjectorImpl.construct(ConstructorInjectorImpl.java:160) at org.jboss.resteasy.spi.ResteasyProviderFactory.createProviderInstance(ResteasyProviderFactory.java:2211) at org.jboss.resteasy.spi.ResteasyDeployment.createApplication(ResteasyDeployment.java:295) at org.jboss.resteasy.spi.ResteasyDeployment.start(ResteasyDeployment.java:236) at org.jboss.resteasy.plugins.server.servlet.ServletContainerDispatcher.init(ServletContainerDispatcher.java:112) at org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher.init(HttpServletDispatcher.java:36) at io.undertow.servlet.core.LifecyleInterceptorInvocation.proceed(LifecyleInterceptorInvocation.java:117) at org.wildfly.extension.undertow.security.RunAsLifecycleInterceptor.init(RunAsLifecycleInterceptor.java:78) at io.undertow.servlet.core.LifecyleInterceptorInvocation.proceed(LifecyleInterceptorInvocation.java:103) at io.undertow.servlet.core.ManagedServlet$DefaultInstanceStrategy.start(ManagedServlet.java:230) at io.undertow.servlet.core.ManagedServlet.createServlet(ManagedServlet.java:131) at io.undertow.servlet.core.DeploymentManagerImpl.start(DeploymentManagerImpl.java:511) at org.wildfly.extension.undertow.deployment.UndertowDeploymentService.startContext(UndertowDeploymentService.java:101) at org.wildfly.extension.undertow.deployment.UndertowDeploymentService$1.run(UndertowDeploymentService.java:82) ... 6 more Caused by: java.lang.LinkageError: Failed to link org/eclipse/persistence/jpa/rs/exceptions/JPARSExceptionMapper (Module "org.eclipse.persistence:main" from local module loader @45283ce2 (finder: local module finder @2077d4de (roots: C:\wildfly-9.0.2.Final\modules,C:\wildfly-9.0.2.Final\modules\system\layers\base))) at org.jboss.modules.ModuleClassLoader.defineClass(ModuleClassLoader.java:437) at org.jboss.modules.ModuleClassLoader.loadClassLocal(ModuleClassLoader.java:269) at org.jboss.modules.ModuleClassLoader$1.loadClassLocal(ModuleClassLoader.java:77) at org.jboss.modules.Module.loadModuleClass(Module.java:560) at org.jboss.modules.ModuleClassLoader.findClass(ModuleClassLoader.java:197) at org.jboss.modules.ConcurrentClassLoader.performLoadClassUnchecked(ConcurrentClassLoader.java:455) at org.jboss.modules.ConcurrentClassLoader.performLoadClassChecked(ConcurrentClassLoader.java:404) at org.jboss.modules.ConcurrentClassLoader.performLoadClass(ConcurrentClassLoader.java:385) at org.jboss.modules.ConcurrentClassLoader.loadClass(ConcurrentClassLoader.java:130) at org.eclipse.persistence.jpa.rs.service.JPARSApplication.<init>(JPARSApplication.java:65) at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:422) at org.jboss.resteasy.core.ConstructorInjectorImpl.construct(ConstructorInjectorImpl.java:148) ... 19 more Caused by: java.lang.NoClassDefFoundError: javax/ws/rs/ext/ExceptionMapper at java.lang.ClassLoader.defineClass1(Native Method) at java.lang.ClassLoader.defineClass(ClassLoader.java:760) at org.jboss.modules.ModuleClassLoader.doDefineOrLoadClass(ModuleClassLoader.java:353) at org.jboss.modules.ModuleClassLoader.defineClass(ModuleClassLoader.java:432) ... 33 more Caused by: java.lang.ClassNotFoundException: javax.ws.rs.ext.ExceptionMapper from [Module "org.eclipse.persistence:main" from local module loader @45283ce2 (finder: local module finder @2077d4de (roots: C:\wildfly-9.0.2.Final\modules,C:\wildfly-9.0.2.Final\modules\system\layers\base))] at org.jboss.modules.ModuleClassLoader.findClass(ModuleClassLoader.java:205) at org.jboss.modules.ConcurrentClassLoader.performLoadClassUnchecked(ConcurrentClassLoader.java:455) at org.jboss.modules.ConcurrentClassLoader.performLoadClassChecked(ConcurrentClassLoader.java:404) at org.jboss.modules.ConcurrentClassLoader.performLoadClass(ConcurrentClassLoader.java:385) at org.jboss.modules.ConcurrentClassLoader.loadClass(ConcurrentClassLoader.java:130) ... 37 more  16:53:17,031 ERROR [org.jboss.as.controller.management-operation] (Controller Boot Thread) WFLYCTL0013: Operation ("deploy") failed - address: ([("deployment" => "csbasement.war")]) - failure description: {"WFLYCTL0080: Failed services" => {"jboss.undertow.deployment.default-server.default-host./csbasement" => "org.jboss.msc.service.StartException in service jboss.undertow.deployment.default-server.default-host./csbasement: java.lang.RuntimeException: Failed to construct public org.eclipse.persistence.jpa.rs.service.JPARSApplication() Caused by: java.lang.RuntimeException: Failed to construct public org.eclipse.persistence.jpa.rs.service.JPARSApplication() Caused by: java.lang.LinkageError: Failed to link org/eclipse/persistence/jpa/rs/exceptions/JPARSExceptionMapper (Module \"org.eclipse.persistence:main\" from local module loader @45283ce2 (finder: local module finder @2077d4de (roots: C:\\wildfly-9.0.2.Final\\modules,C:\\wildfly-9.0.2.Final\\modules\\system\\layers\\base))) Caused by: java.lang.NoClassDefFoundError: javax/ws/rs/ext/ExceptionMapper