[jboss-as7-dev] Loading of System Resources Broken in JBoss AS 7 Final but worked in JBoss AS 7 Beta 3 - Workaround?

Carlo de Wolf cdewolf at redhat.com
Thu Jul 14 17:47:58 EDT 2011


On 07/14/2011 10:16 PM, Jason T. Greene wrote:
> On 7/14/11 1:37 PM, William Louth (JINSPIRED.COM) wrote:
>> The label associated with this change which broke things is ominous enough:
>>
>> MODULES-89: make sure ModuleClassLoader lives in complete isolation and
>> use package name to load package spec
>> https://github.com/jbossas/jboss-modules/commit/2046885497316d66ca0682b4a83fe8fad4cb0ccc#src/main/java/org/jboss/modules/ModuleClassLoader.java
> This patch is wrong, it shouldn't have been merged. I'll revert that
> portion.
>
>> If you are going to do it like this then at least change the
>> ModuleClassLoader or ConcurrentClassLoader to properly implement support
>> for loading resources from Module.systemPaths though I would question
>> this default and non-configurable behavior. Pain lies this way for sure
>> and any benefit (fast start-up)&   goodwill (hey you are modular) you
>> think you have achieved with this will evaporate in seconds when things
>> just don't work. I know from experience.
> We only want one configuration, the one that works :)
>
> Note that this issue is limited to resource loading with elements on
> systemPaths. Reverting that patch will have no effect on performance or
> modularity, it will just fix the bug.
>
The patch is correct. The contents of a module must not be polluted by 
anything on the class path, only stuff from jboss.modules.system.pkgs 
may creep in. So somewhere therein lies the problem.

How do you load those resources from the class loader?
Do you have a code snippet?

Carlo


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