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Thread Context Class Loading in Web-Bundles [message #632613]

Wed, 13 October 2010 15:18

Thomas Kratz

Messages: 165
Registered: July 2009

Senior Member

HI, I experienced today that the magix of the class loading via the synthetic context doesn't seem to work when I deploy everything as a web bundle. Not a major issue as i could factor out the web layer into a seperate bundle but I wonder if this is intended behaviour.

Have to fix client now as I had to restructure shared bundles. Its a pain with STS and PDE having different strategies on building bundles. But that will have to wait some days.

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Re: Thread Context Class Loading in Web-Bundles [message #632619 is a reply to message #632613]

Wed, 13 October 2010 15:28

Dmitry Sklyut

Messages: 279
Registered: January 2010

Senior Member

Would you mind sharing the symptoms you are seeing?

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Re: Thread Context Class Loading in Web-Bundles [message #632637 is a reply to message #632619]

Wed, 13 October 2010 16:37

Thomas Kratz

Messages: 165
Registered: July 2009

Senior Member

Just added Web ContextPath and a web.xml with a servlet to Manifest and bundle, classloading from hibernate started to fail.

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Re: Thread Context Class Loading in Web-Bundles [message #632639 is a reply to message #632637]

Wed, 13 October 2010 16:43

Dmitry Sklyut

Messages: 279
Registered: January 2010

Senior Member

Need a bit more info:

1. What version of Virgo are you using?
2. Are you deploying in a scoped plan? (based on you saying synthetic context I would asume so)
3. Can you provide your manifest.mf for your bundle?
4. What kind of exceptions do you see from hibernate?
5. Do you have any libraries in WEB-INF/lib?

With hibernate you need to Import-Bundle in a scoped plan:

i.e. http://www.eclipse.org/virgo/documentation/virgo-documentati on-2.1.0.M06-incubation/docs/virgo-programmer-guide/html/ch0 8.html#common-libraries-hibernate

Import-Bundle: com.springsource.org.hibernate;version="[3.2.6.ga,3.2.6.ga]";import-scope:=application

It is a serious issue if scoped plans don't work out of the box.

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Re: Thread Context Class Loading in Web-Bundles [message #632740 is a reply to message #632639]

Thu, 14 October 2010 06:59

Thomas Kratz

Messages: 165
Registered: July 2009

Senior Member

I am running on M6 Milestone. Already changed the whole setup so I sadly can't reproduce now. And yes it was a scoped plan with no libs under web-inf/lib. although I guessed the import scope application was mentioned to make it vivisble to other application bundles. I only have two bundles that both import the hibernate bundle. But I have to say that I was strange errors that seemed to be caused by sts tooling failing to properly deploy the plan. I had to clear the stage directory manually often.

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