Re: java.lang.LinkageError for jakarta.faces.context.ExternalContext

It seems that the JAR that was on workspace17/.metadata/.plugins/org.eclipse.wst.server.core/tmp3/wtpwebapps/bcorg-jpa/WEB-INF/lib/myfaces-api-3.0.2.jar was the culprit. I got suspicious about the JAR being mentioned twice.

So, after manually deleting the file, the web app now starts normally! Excellent suggestion Jonathan, it provided the hint I was looking for.

I still don’t know why that JAR was there (I didn’t put it in there), but maybe it’s from some earlier builds, who knows.

Anyway, PROBLEM SOLVED!!

Thanks for your help

> On 25 Jul 2023, at 11:39 am, Milan Durovic <[email protected]> wrote:
> 
> Ok, I added that option and got a lot more output (as expected), so the lines where jakarta.faces.context.ExternalContext is mentioned are:
> 
> [0.408s][info][class,load] jakarta.faces.context.ExternalContext source: file:/Users/milan/workspace17/apache-tomee-webprofile-9.1.0/lib/myfaces-api-3.0.2.jar
> 
> [1.669s][info][class,load] jakarta.faces.context.ExternalContext source: __JVM_DefineClass__
> 
> [4.038s][info][class,load] jakarta.faces.context.ExternalContext source: file:/Users/milan/workspace17/.metadata/.plugins/org.eclipse.wst.server.core/tmp3/wtpwebapps/bcorg-jpa/WEB-INF/lib/myfaces-api-3.0.2.jar
> 
> java.lang.LinkageError: loader constraint violation for class org.apache.tomee.myfaces.TomEEWebConfigProvider: when selecting overriding method 'java.util.List org.apache.tomee.myfaces.TomEEWebConfigProvider.getFacesServletMappings(jakarta.faces.context.ExternalContext)' the class loader org.apache.tomee.catalina.TomEEWebappClassLoader @2e5b7fba of the selected method's type org.apache.tomee.myfaces.TomEEWebConfigProvider, and the class loader java.net.URLClassLoader @7106e68e for its super type org.apache.myfaces.spi.impl.DefaultWebConfigProvider have different Class objects for the type jakarta.faces.context.ExternalContext used in the signature (org.apache.tomee.myfaces.TomEEWebConfigProvider is in unnamed module of loader org.apache.tomee.catalina.TomEEWebappClassLoader @2e5b7fba, parent loader java.net.URLClassLoader @7106e68e; org.apache.myfaces.spi.impl.DefaultWebConfigProvider is in unnamed module of loader java.net.URLClassLoader @7106e68e, parent loader 'app')
> 
> 
>> On 25 Jul 2023, at 11:21 am, Jonathan S. Fisher <[email protected]> wrote:
>> 
>> can you start your vm with -verbose:class and see if you can figure out
>> which jar it's loaded the class from?
>> 
>