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Import packages in spring dependant bundle question [message #908529]

Wed, 05 September 2012 14:26

Vladimir Stevanovic

Messages: 29
Registered: March 2010

Junior Member

Hi,

when importing bundle that has dependency on springframework and hibernate libraries I get java.lang.NoClassDefFoundError org/hibernate/annotations/Entity when spring tries to load class via org.springframework.util.ClassUtils.forName(String name, ClassLoader classLoader) method.

This is because this method is using TCCL that is CL from my bundle and I do not have imported package org.hibernate.annotations in bundle manifest.

This is not happening when classes are loaded in a normal way although packages are not imported in bundle manifest also.

Is this desired behavior?

I would like to avoid very large import packages statement in manifest.

Thanks, Vladimir.

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Re: Import packages in spring dependant bundle question [message #911994 is a reply to message #908529]

Wed, 12 September 2012 18:42

Chris Frost

Messages: 230
Registered: January 2010
Location: Southampton, England

Senior Member

Hi,

Unfortunately this is just where OSGi classloading clashes with old world classloading. When code uses '.forName' for example using the TCCL then you just have to do the imports on your own bundle. This is not desired behaviour but the only way round the unfriendly classloading in some third party code. You can avoid the large manifest if you really want by boot delegating the packages in the Java profile but be carefully as this may have other side effects especially if other code is also importing the packages.

Chris.

------------------------------------------------
Chris Frost, Twitter @cgfrost
Springsource, a divison of VMware.

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