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From Peter Petersson <>
Subject Re: Geronimo 3 with Scala 2.10
Date Sat, 16 Feb 2013 11:45:58 GMT

Thanks Richard for putting this minimal Scala 2.9/2.10 example together 
to demonstrate this "class loading problem".

I took a peek at it and found a way to get around the problem found with 
the 2.10 build (see below), however I still have not found the direct 
cause of the problem and hope that someone in the Geronimo community 
could help narrow it down a bit more, It would be greatly appreciated ( 
David J ? ;) ).

To make the 2.10 build deploy and start correctly, as the Scala 2.9 
build dose, I added the inverse-classloading [1] setting to the 
deployment descriptor (for the Scala 2.10 build, its not needed when 
building with Scala 2.9), this may however not be a ultimate solution in 
all situations so if anyone have a better solution or a suggestion on 
how to narrow it down pleas let us know.


best regards
    Peter Petersson

On 02/12/2013 11:05 AM, Richard Dallaway wrote:
> Hello.
> I've run into a WAR deployment problem that I'm hoping someone here 
> can help me understand and resolve.
> I've put together a small web application (just a servlet filter) 
> which references Apache Commons Codec. This project uses Scala. When 
> build with Scala 2.9 it deploys to Geronimo and runs.  When build with 
> Scala 2.10 it does not deploy.  However, both versions happily deploy 
> and run under Tomcat 7.
> The exception is:
> ERROR [[/hello]] Exception starting filter MyFilter
> java.lang.NoClassDefFoundError: org/apache/commons/codec/binary/BaseNCodec
> at java.lang.Class.forName0(Native Method)
> at java.lang.Class.forName(
> at org.apache.xbean.recipe.RecipeHelper.loadClass(
> at org.apache.xbean.recipe.ObjectRecipe.getType(
> at 
> org.apache.xbean.recipe.ObjectRecipe.internalCreate(
> at org.apache.xbean.recipe.AbstractRecipe.create(
> at org.apache.xbean.recipe.AbstractRecipe.create(
> at org.apache.geronimo.j2ee.annotation.Holder.newInstance(
> at 
> org.apache.geronimo.tomcat.TomcatInstanceManager.newInstance(
> I've put the project on github with details of steps to reproduce and 
> the full stack trace and WAR contents:
> Any suggestions for how I can resolve this one?
> Thanks
> Richard

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