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Deploy plugin project classes to tomcat [message #698362]

Tue, 19 July 2011 06:46

Eclipse User

Following situation: i have created an eclipse plugin project which requires bundles org.eclipse.core.runtime, org.eclipse.emf.core and a few more. And i have created a dynamic web application that runs successfully in tomcat.

Now the web application servlet needs to be extended to instantiate classes from the plugin project and operate on these objects. The problem is that tomcat does not know about the required bundles of the plugin project, so that all my attempts end in several ClassNotFound exceptions.

How can i combine a dynamic web application and an eclipse plugin project so that tomcat is invoked with the correct settings?

thanks
marius

Re: Deploy plugin project classes to tomcat [message #698488 is a reply to message #698362]

Tue, 19 July 2011 10:31

Eclipse User

On 7/19/2011 6:46 AM, Marius M. wrote:
> Following situation: i have created an eclipse plugin project which
> requires bundles org.eclipse.core.runtime, org.eclipse.emf.core and a
> few more. And i have created a dynamic web application that runs
> successfully in tomcat.
>
> Now the web application servlet needs to be extended to instantiate
> classes from the plugin project and operate on these objects. The
> problem is that tomcat does not know about the required bundles of the
> plugin project, so that all my attempts end in several ClassNotFound
> exceptions.
>
> How can i combine a dynamic web application and an eclipse plugin
> project so that tomcat is invoked with the correct settings?
>
> thanks
> marius

Web Tools offers support for dependent projects in dynamic web projects
on the Deployment Assembly page of the project's Properties dialog.
However, this only works with plain Java projects and does not support
plug-in projects. Your best bet is probably to make a copy of the jars
you need in the WebContent/WEB-INF/lib folder of the dynamic web project.

Also, note that Tomcat does not provide an "OSGI" type environment to
webapps, so any Eclipse/OSGI related entries in the MANIFEST.MF of those
jars will be ignored by Tomcat. If an "OSGI" type environment is needed
to run the plug-in jars, then it will be up to your webapp to provide
it. I don't know if something like RAP[1] would help in your situation.

Cheers,
Larry

[1] http://www.eclipse.org/rap/

Re: Deploy plugin project classes to tomcat [message #698757 is a reply to message #698488]

Wed, 20 July 2011 03:36

Eclipse User

Thanks for the reply. You're right, i have no problem with the servlet depending on plain java projects.

The problem is that the plugin requires the OSGi environment, and i will have to start the environment in the same way from the servlet as it is started with every eclipse application. If somebody can elaborate on the required steps, this will be great. Otherwise i'll have to study RAP in detail, because it seems to perform those steps.

thanks
marius

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