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From Maxime Thieu <maxime.th...@gmail.com>
Subject persistence.xml in a Jar in Tomcat Common classloader (ERROR : PersistenceUnit already deployed)
Date Thu, 16 Oct 2008 07:25:26 GMT

Hello everybody,

I am developping ejb-jar module (let's call it service.jar) which contains
EJB, Entity, Service and persistence.xml (in META-INF).

I am developping webapp module (let's call it test.war) which contains
Servlets who are calling some Service in service.jar (using entityManager to
persist some data).

I am trying to make this work under Tomcat 6.xx using OpenEJB 3.1 (build:
20081009-03:31).

A.jar is present in the common classloader of Tomcat (in lib directory) in
order to be visible by all webapps.
In this case, during Tomcat starting, OpenEJB show the following Error :
"ERROR - Unable to deploy collapsed ear in war /test: Exception: Creating
application failed: C:\tomcat6\webapps\test: PersistenceUnit already
deployed: /C:/tomcat6/lib/service.jar"


If service.jar is present in the WEB-INF/lib of test.war, everything works
well, but this is not I want (classes of service.jar should be visible by
all webapps).


Do I miss something? Is this possible with OpenEJB?

I make several try and search but I do not find how to solve this (and I am
a beginner in OpenEJB).

Thanks in advance, any help would be appreciated.

Maxime

here is the complete StackTrace of the Error in the log :

ERROR - Unable to deploy collapsed ear in war /test: Exception: Creating
application failed: C:\tomcat6\webapps\test: PersistenceUnit already
deployed: /C:/tomcat6/lib/service.jar
org.apache.openejb.OpenEJBException: Creating application failed:
C:\tomcat6\webapps\test: PersistenceUnit already deployed:
/C:/tomcat6/lib/service.jar
     at
org.apache.openejb.assembler.classic.Assembler.createApplication(Assembler.java:650)
     at
org.apache.openejb.assembler.classic.Assembler.createApplication(Assembler.java:447)
     at
org.apache.openejb.tomcat.catalina.TomcatWebAppBuilder.start(TomcatWebAppBuilder.java:241)
     at
org.apache.openejb.tomcat.catalina.TomcatLoader.processRunningApplications(TomcatLoader.java:228)
     at
org.apache.openejb.tomcat.catalina.TomcatLoader.init(TomcatLoader.java:139)
     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
     at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:64)
     at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
     at java.lang.reflect.Method.invoke(Method.java:615)
     at org.apache.openejb.loader.Embedder.init(Embedder.java:75)
     at org.apache.openejb.tomcat.loader.TomcatHook.hook(TomcatHook.java:98)
     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
     at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:64)
     at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
     at java.lang.reflect.Method.invoke(Method.java:615)
     at
org.apache.openejb.tomcat.loader.TomcatEmbedder.embed(TomcatEmbedder.java:74)
     at
org.apache.openejb.tomcat.loader.LoaderServlet.init(LoaderServlet.java:44)
     at
org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1161)
     at
org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:981)
     at
org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:4055)
     at
org.apache.catalina.core.StandardContext.start(StandardContext.java:4361)
     at
org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:791)
     at
org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:771)
     at
org.apache.catalina.core.StandardHost.addChild(StandardHost.java:525)
     at
org.apache.catalina.startup.HostConfig.deployDescriptor(HostConfig.java:626)
     at
org.apache.catalina.startup.HostConfig.deployDescriptors(HostConfig.java:553)
     at
org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:488)
     at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1138)
     at
org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:311)
     at
org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:117)
     at
org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1053)
     at org.apache.catalina.core.StandardHost.start(StandardHost.java:719)
     at
org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045)
     at
org.apache.catalina.core.StandardEngine.start(StandardEngine.java:443)
     at
org.apache.catalina.core.StandardService.start(StandardService.java:516)
     at
org.apache.catalina.core.StandardServer.start(StandardServer.java:710)
     at org.apache.catalina.startup.Catalina.start(Catalina.java:576)
     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
     at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:64)
     at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
     at java.lang.reflect.Method.invoke(Method.java:615)
     at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:288)
     at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:413)
Caused by: 
org.apache.openejb.OpenEJBException: PersistenceUnit already deployed:
/C:/tomcat6/lib/service.jar
     at
org.apache.openejb.assembler.classic.Assembler.createApplication(Assembler.java:490)
     ... 42 more

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