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From David Jencks <>
Subject Re: HEADS-UP: ASM 3.1 shaded and org.objectweb.asm becomes org.apache.xbean.asm
Date Tue, 26 May 2009 19:33:49 GMT

On May 26, 2009, at 2:40 PM, David Blevins wrote:

> On May 26, 2009, at 9:44 AM, David Jencks wrote:
>> On May 22, 2009, at 6:11 PM, Jacek Laskowski wrote:
>>> On Fri, May 22, 2009 at 11:37 PM, Jacek Laskowski
>>> <> wrote:
>>>> One (small) step at a time? :) I'll give it a shot ->
>>> Done. It turned out very easy. Thanks for encouragement :)
>> I'm not very happy with the current way this is implemented.  I  
>> guess my fundamental point of view is that shading is only needed  
>> when you don't have good classloaders such as osgi or (some version  
>> of) the geronimo ones.  I don't think the core xbean libraries  
>> should make such assumptions about classloaders but should assume  
>> good classloading.
>> So I'd prefer that the core xbean libraries use plan asm and that  
>> we provide shaded xbean libraries that use the shaded asm jar.  If  
>> no one objects I'm happy to set this up.
> Ok, the end result will be the same for any G assemblies that pull  
> in OpenEJB.  I.e. OpenEJB needs to satisfy the embedded scenario  
> where there are just plain classloaders, so the end result is that  
> xbean-finder + xbean-reflect + xbean-asm-shaded are still going to  
> be required as they are now (or some equivalent form of them).

I posted a patch to XBEAN-128 showing what I have in mind.

- xbean-reflect and xbean-finder use unshaded asm (dependencies should  
be provided like they used to be, I guess)
- 2 new modules xbean-finder-shaded and xbean-reflect shaded that are  
shaded to use the xbean-asm-shaded jar instead of plain asm jars

So if we go with something like this patch openejb would depend on the  
xbean-finder-shaded and xbean-reflect-shaded jars and geronimo might  
use the plain ones instead.

One difference between the proposed xbean-finder-shaded and current  
trunk xbean-finder is that the proposed -shaded jars don't have a  
dependency on xbean-asm-shaded whereas the trunk jars do.  However  
this was something of a change as previously xbean-finder listed the  
asm jars as scope provided.

david jencks

> -David

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