uimaj-ep-runtime depends on eclipse

[Jörn Kottmann <ko...@gmail.com>]

Hi,

I tried to deploy our uimaj-eg-runtime bundle in a spring dm-server,
but that did not works well because of the EMF dependency.
The EMF guys say it is possible to run EMF standalone with
4 jars, but that does not work in an OSGI environment,
because the necessary EMF bundles depend on org.eclipse.core.runtime
which again has many dependencies.

For me this would mean that I have to install half of eclipse to
get the uimaj-ep-runtime bundle deployed to a spring dm-server.

I checked the code and we have a dependency in the core
in package org.apache.uima.ecore. It contains utils
which are used by the examples.

In my opinion we should move the classes out of the core
over to the examples, because we usually do not say that
EMF is a necessary dependency for the core.
In the examples it is explained which dependencies are
required.

But then again our runtime plugin contains the examples,
we would have to remove the examples from the runtime
plugin to make it work.

Another solution could be to just remove the imports from
the runtime plugin manifest.

Jörn

Re: uimaj-ep-runtime depends on eclipse

[Thilo Goetz <tw...@gmx.de>]

Jörn Kottmann wrote:
> Hi,
> 
> I tried to deploy our uimaj-eg-runtime bundle in a spring dm-server,
> but that did not works well because of the EMF dependency.
> The EMF guys say it is possible to run EMF standalone with
> 4 jars, but that does not work in an OSGI environment,
> because the necessary EMF bundles depend on org.eclipse.core.runtime
> which again has many dependencies.
> 
> For me this would mean that I have to install half of eclipse to
> get the uimaj-ep-runtime bundle deployed to a spring dm-server.
> 
> I checked the code and we have a dependency in the core
> in package org.apache.uima.ecore. It contains utils
> which are used by the examples.
> 
> In my opinion we should move the classes out of the core
> over to the examples, because we usually do not say that
> EMF is a necessary dependency for the core.
> In the examples it is explained which dependencies are
> required.

+1.  When we originally created the Eclipse plugins, I
guess nobody thought we might deploy these in a non-Eclipse
OSGI runtime.  So nobody gave the EMF dependencies a second
thought.  Times change, and I agree that nowadays, it makes
sense to have a core UIMA OSGI bundle that can be deployed
in Eclipse, but that doesn't have any dependencies on
Eclipse so it can be deployed in a plain OSGI runtime as
well.

> 
> But then again our runtime plugin contains the examples,
> we would have to remove the examples from the runtime
> plugin to make it work.

Why not move the examples to a separate plugin?  This would
then be an Eclipse-only plugin.

--Thilo

> 
> Another solution could be to just remove the imports from
> the runtime plugin manifest.
> 
> Jörn