John E. Conlon wrote:
As you mentioned after the change I had to edit my bundle Import-Package
headers to get bundles to resolve without NoClassDefFoundErrors.
Now the tough part about this was that I had to not only import all the
javax classes I was using but also the sun, and even the com.sun
packages in the imports as well. Then I had to add the various
javax.xxx, sun.xxx and com.sun.xxx packages to the config.properties
file's org.osgi.framework.system.packages property as well.
I wanted to follow up on this, just to make sure I understand the
situation. Are you actually using sun.* and com.sun.* classes directly
in your code? Or are you referring to a situation where you are running
into the bug I mentioned where your bundle does not directly use these
classes but you are still getting a class loading error?
I just want to make sure I understand the situation. If you are using
them directly, I guess I could also add that this is risky business
depending on Sun impl classes. :-)
Now I must confess that reading the classloading part of the OSGi spec
makes my eyes glaze over, but I did notice section 3.8.3 discussion of
parent delegation. It talks about a bootdelegation property that can add
packages to the parent classloader like this:
property org.osgi.framework.bootdelegation=sun.*,com.sun.*
Maybe I am paranoid but I feel uncomfortable doing anything (even
declaring imports in bundles) with the sun and com.sun packages. Could
the bootdelegation property eventually come to the rescue?
I have the boot delegation property working in my workspace...I will try
to test it a little more to make sure that it appears to be working and
I will commit it in the next couple of hours.
-> richard
cheers,
John
On Wed, 2006-04-05 at 04:54 -0400, Richard S. Hall wrote:
Hello everyone,
I just wanted to let you know that I discovered and fixed a bug in Felix
class loading that was accidentally exposing classes on the class path
to bundles, even if they did not import them.
This bug was introduced during the module layer refactoring.
I am posting a message about this to let people know that they should
"svn update" and after they do, they might experience
NoClassDefFoundErrors and the like if their bundles' manifests are
incomplete. If you run into this situation, most likely, you just need
to add the package to the Import-Package header of the bundle.
-> richard
