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Neven,

On 11/3/14 6:58 PM, Neven Cvetkovic wrote:
> On Mon, Nov 3, 2014 at 6:42 PM, Neven Cvetkovic
> <neven.cvetko...@gmail.com> wrote:
> 
>> 
>> SLIGHTLY-OFFTOPIC:
>> 
>> Although, I would love to see out-of-box setup for additional
>> shared-lib folder, something other than TOMCAT/lib with Tomcat
>> default libraries. Essentially, I would love to separate my
>> customer shared libraries from Tomcat default libraries. I guess
>> - question would be where are CATALINA_HOME/lib JAR files being
>> loaded from? Can we add another directory to scan for libraries
>> to be loaded? Is that configurable?
>> 
>> 
>> 
> I guess, it's easy to add new directories to 
> TOMCAT/conf/catalina.properties file:
> 
> common.loader= 
> ${catalina.base}/lib,${catalina.base}/lib/*.jar,${catalina.home}/lib,${catalina.home}/lib/*.jar
>
> 
> 
> to now read:
> 
> common.loader= 
> ${catalina.base}/lib,${catalina.base}/lib/*.jar,${catalina.home}/lib,${catalina.home}/lib/*.jar,${catalina.base}/shared,${catalina.base}/shared/*.jar,${catalina.home}/shared,${catalina.home}/shared/*.jar

Or
> 
just use shared.loader, which is I think what you're asking for.
It's blank in a default configuration.

> What are you thoughts? Would it make sense to keep a separate
> directory for shared libraries? Should we make it default - to
> encourage others to create a directory if they want to.

- -1

This is confusing and would be surprising if you hadn't intended to
use this. The "shared" loader was disabled by default because nobody
could figure out what the heck it was for and basically continually
broke their own configurations using it. So, now, everything goes into
either lib/ or the web application's WEB-INF/lib and everyone seems to
be happy. One can always re-enable the shared loader if you know it
exists, in which case you probably know what it's for and why you'd
use it. (Hint: use of the shared loader almost never makes any sense).

> Default behaviour for 
> org.apache.catalina.startup.ClassLoaderFactory is to validate if
> the file exists/isDirectory/isReadable? That might confuse
> beginners with a Warning ...
> 
> 
> I guess Tomcat philosophy is to keep it simple, and extensible - so
> experts that need to customize things they can, and it is simple
> and not confusing for beginners.
> 
> What are your thoughts?

I like the current default configuration but I'm willing to entertain
other ideas. I just don't like this one in particular (default to
split configuration).

- -chris
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