| Classloader only finding half of a jar? (db4o) [message #22122] |
Tue, 13 May 2003 23:29  |
Eclipse User |
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Originally posted by: clee3.students.depaul.edu
Hi,
I'm trying to use db4o (a lightweight OO db) from inside an eclipse
plugin. However, db4o, which
uses the Thread.currentThread().getContextLoader() cannot find some of its
classes.
Now, I know that from within the plugin, the db4o.jar partially loads,
because it loads enough to
throw its own error messages about not being able to load other classes
within the same jar.
looking for help, or if you have used db4o from within an eclipse plugin,
Chris
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| Re: Classloader only finding half of a jar? (db4o) [message #23381 is a reply to message #22122] |
Wed, 14 May 2003 17:14  |
| Eclipse User |
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Originally posted by: jed_anderson.us.ibm.com
Does the manifest file in the db4o jar reference other jars? Are those
jars located in the "correct" spot as specified in the manifest?
Just a thought...
jkca
Christopher Lee wrote:
> Hi,
>
> I'm trying to use db4o (a lightweight OO db) from inside an eclipse
> plugin. However, db4o, which
> uses the Thread.currentThread().getContextLoader() cannot find some of its
> classes.
>
> Now, I know that from within the plugin, the db4o.jar partially loads,
> because it loads enough to
> throw its own error messages about not being able to load other classes
> within the same jar.
>
> looking for help, or if you have used db4o from within an eclipse plugin,
>
>
> Chris
>
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| Re: Classloader only finding half of a jar? (db4o) [message #23724 is a reply to message #22122] |
Wed, 14 May 2003 20:34 |
| Eclipse User |
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Originally posted by: muelleimer.usenet.katzien.de
* Christopher Lee <clee3@students.depaul.edu> wrote:
> plugin. However, db4o, which
> uses the Thread.currentThread().getContextLoader() cannot find some of its
> classes.
Another guess: the Context classloader does not know about the
plugin location. This is at least happening, if you use the xerces
factories. Search the wiki for classloader and xerces to get a
'pattern', how to solve this. Something with setting the context
classloader to the classloader of your current class , doing the
operation and then put the opld context classlaoder back.
Jan, debugged this problem for about a day...
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