For using an update site with features, we don't need to change
anything in the existing plug-ins. We only need to create a new
feature (with the Eclipse Wizard) and point to the UIMA plug-ins. So
far so good.

The only problem, as far as I know is, that we can't refer to
features, which are not part of our site within a feature as include.
But we can define dependencies on a particular EMF plugin/feature as
required (see: 
http://help.eclipse.org/help32/index.jsp?topic=/org.eclipse.platform.doc.isv/reference/misc/feature_manifest.html).

If I got it right from the spec of an update site
(http://help.eclipse.org/help32/index.jsp?topic=/org.eclipse.platform.doc.isv/reference/misc/update_sitemap.html)
we can refer to external features by url. In that case, the "add
required" Button in Eclipse update manager should do the job in
finding all required plug-ins.

I haven't tested that yet, but after a short look into the Eclipse
help, it looks like a possible way.

-- Mirko

On 4/28/07, Marshall Schor <[EMAIL PROTECTED]> wrote:
I'm wondering if the following would work:

1) convert the UIMA plugins to features, and make the features depend on
EMF.  This is already a Jira issue, which no one has picked up to work
on (http://issues.apache.org/jira/browse/UIMA-74 ).

2) only document the method of install which requires use of Eclipse
Update Manager.

-Marshall

Mirko Jahn wrote:
> Yes, I agree with Tong. Even if it is not possible to host such a site
> in the web, it is possible to distribute the bundles as a locale
> update site, as some other project already does it. In that case, in
> my point of view the installation becomes more reliable and easier
> from the userperspective.
>
> -- Mirko
>
> On 4/27/07, Tong Fin <[EMAIL PROTECTED]> wrote:
>> The difficulty of the installation comes from 2 sources:
>> 1. CDE tries to support many versions of Eclipse
>> 2. No checking of compatible version between Eclipse and EMF
>>
>> The above problem continues to pop-up forever !
>>
>> One approach is to try to use Eclipse Update Manager (as mentionned
>> by Adam)
>> to check the conflict.
>>
>> -- Tong
>>
>> On 4/27/07, Michael Baessler <[EMAIL PROTECTED]> wrote:
>> >
>> > Adam Lally wrote:
>> > > There was just a post on uima-user (which got resolved already)
>> about
>> > > difficulting in getting the CDE to work.  This keeps coming up,
>> and is
>> > > almost always an EMF installation problem.  In this case it was an
>> > > incorrect EMF version for the Eclipse version being used.  Is there
>> > > anything we can do to improve the situation?  Would making an
>> Eclipse
>> > > "feature" or setting up an update site help at all?
>> > >
>> > > -Adam
>> > >
>> > >
>> > Why can't we provide a list of eclipse versions we have tested with
>> the
>> > corresponding EMF versions? So if users do a clean install of eclipse
>> > and EMF they can install the versions that work together correctly. Or
>> > we post a link to
>> > http://www.eclipse.org/modeling/emf/downloads/?project=emf where users
>> > can find the correct EMF version for their eclipse.
>> >
>> > -- Michael
>> >
>> >
>>
>
>


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