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Re: Dynamically adding to classpath

by Lenny Marks :: Rate this Message:

You can also append to the $CLASSPATH global at runtime(unless that's
frowned upon these days). Here's an old post about what we were doing
(still more or less the same).

http://archive.jruby.codehaus.org/user/B5A15A45-71F7-4432-8F10-
C892023A157F%40aps.org

Also..

http://wiki.jruby.org/wiki/FAQs#How_come_Java_can.
27t_find_resources_in_class_folders_that_I.27ve_appended_to_the_.
24CLASSPATH_global_variable_at_runtime.3F

-lenny

On Mar 5, 2008, at 11:39 AM, Chris Evans wrote:

> well, its still pretty cool :)
>
> On Wed, Mar 5, 2008 at 11:33 AM, Nick Sieger <nicksieger@...>
> wrote:
>> No, you still need to use "import" or "include_class" unfortunately.
>> This is just shorthand for making them available on the classpath.
>>
>> /Nick
>>
>>
>> On Mar 5, 2008, at 9:40 AM, Chris Evans wrote:
>>
>>> If I require the jars this way, do I also need to include_class the
>>> classes I need, or will they be available because of the require?
>>> Because that would be really cool :)
>>>
>>> Chris
>>>
>>> On Tue, Mar 4, 2008 at 11:31 PM, Nick Sieger <nicksieger@...>
>>> wrote:
>>>>
>>>> On Mar 4, 2008, at 8:37 PM, Chris Evans wrote:
>>>>
>>>>> I'm working on a module for managing Websphere, using Jruby and
>>>>> Websphere MBeans. It works great, but I've modified jruby.sh to
>>>>> add
>>>>> the (numerous) needed $WAS_HOME/lib jar files to the classpath.
>>>>>
>>>>> I'd prefer to give my module the name of the WAS_HOME/lib
>>>>> directory,
>>>>> and have my module add the needed jars to the load path or
>>>>> classpath
>>>>> programmatically, leaving jruby.sh untouched ( and my command line
>>>>> clean and simple)
>>>>>
>>>>> Possible?
>>>>
>>>> Sure -- try
>>>>
>>>> Dir[ENV['WAS_HOME'] + '/lib/*.jar'].each {|jar| require jar}
>>>>
>>>> -- assuming WAS_HOME is present in the environment.
>>>>
>>>> Cheers,
>>>> /Nick
>>>>
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