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Posted to dev@felix.apache.org by Carlos Sanchez <ca...@apache.org> on 2006/10/04 01:05:59 UTC
Maven 2 plugin and Require-Bundle
Hi,
I've tried the felix maven 2 plugin to build an Eclipse plugin and saw
that there's no way to set the Require-Bundle from the dependencies.
I'm looking for the possibility of saying that some of the deps are
part of Require-Bundle and then don't include the jars in the result
osgi bundle, nor in the Bundle-Classpath.
Are my assumptions wrong? if not i'm gonna work on it and contribute
it back if it's of interest.
Thanks
--
I could give you my word as a Spaniard.
No good. I've known too many Spaniards.
-- The Princess Bride
Re: Maven 2 plugin and Require-Bundle
Posted by "Richard S. Hall" <he...@ungoverned.org>.
I am not exactly sure what you are saying below.
To be clear, require-bundle and import-package are not equivalent, but
they certainly overlap. A simple way of looking at require-bundle is
that it is a shorthand way of importing every package that is exported
by another bundle, but it a slightly different than this in reality.
Import-package terminates when a class from the package is not found
(i.e., packages are assumed to be self-contained), while require-bundle
does NOT terminate when a class from a package is not found, it
continues searching other required bundles as well as the local bundle
itself (i.e., packages are assumed to be split).
Although require-bundle seems like a convenience method, it really is
different and should only be used if you require the functionality that
it provides. By and large, you should use import-package.
-> richard
Carlos Sanchez wrote:
> I'm very new to osgi :( Thanks to your pointers I've found that
> import-package and require-bundle are equivalent.
>
> However, require bundle seems to transitively make available all the
> jars in bundled-classpath for all bundles without including those jars
> in my bundle.
> I could set the maven dependencies as provided and then don't get the
> jars in my bundle, but provided dependencies are not transitive in
> maven so I'd need to list all of them. Maybe leave them as compile
> scope and add a config option to set what jars not to include ?
>
> Thanks
>
> On 10/4/06, Peter Kriens <Pe...@aqute.biz> wrote:
>> Could you give an example when the package dependencies would not work
>> and require bundle would?
>>
>> The maven plugin analyzes the bundle for referenced packages. Required
>> bundles should export those packages. The use of require bundle is
>> largely for convenience, it saved you from typing those pesky import
>> package statements. However, with the plugin this not an issue.
>>
>> The advantage of import packages is that you get substitutability, if
>> you later decide to layout your bundles in a different way, or someone
>> decides to write an adapter for a different environment, things still
>> work.
>>
>> Just curious.
>>
>> Kind regards,
>>
>> Peter Kriens
>>
>>
>> CS> Hi,
>>
>> CS> I've tried the felix maven 2 plugin to build an Eclipse plugin
>> and saw
>> CS> that there's no way to set the Require-Bundle from the dependencies.
>> CS> I'm looking for the possibility of saying that some of the deps are
>> CS> part of Require-Bundle and then don't include the jars in the result
>> CS> osgi bundle, nor in the Bundle-Classpath.
>>
>> CS> Are my assumptions wrong? if not i'm gonna work on it and contribute
>> CS> it back if it's of interest.
>>
>> CS> Thanks
>>
>>
>>
>> --
>> Peter Kriens Tel +33467542167
>> 9C, Avenue St. Drézéry AOL,Yahoo: pkriens
>> 34160 Beaulieu, France ICQ 255570717
>> Skype pkriens Fax +1 8153772599
>>
>>
>
>
Re: Maven 2 plugin and Require-Bundle
Posted by Carlos Sanchez <ca...@apache.org>.
I'm very new to osgi :( Thanks to your pointers I've found that
import-package and require-bundle are equivalent.
However, require bundle seems to transitively make available all the
jars in bundled-classpath for all bundles without including those jars
in my bundle.
I could set the maven dependencies as provided and then don't get the
jars in my bundle, but provided dependencies are not transitive in
maven so I'd need to list all of them. Maybe leave them as compile
scope and add a config option to set what jars not to include ?
Thanks
On 10/4/06, Peter Kriens <Pe...@aqute.biz> wrote:
> Could you give an example when the package dependencies would not work
> and require bundle would?
>
> The maven plugin analyzes the bundle for referenced packages. Required
> bundles should export those packages. The use of require bundle is
> largely for convenience, it saved you from typing those pesky import
> package statements. However, with the plugin this not an issue.
>
> The advantage of import packages is that you get substitutability, if
> you later decide to layout your bundles in a different way, or someone
> decides to write an adapter for a different environment, things still
> work.
>
> Just curious.
>
> Kind regards,
>
> Peter Kriens
>
>
> CS> Hi,
>
> CS> I've tried the felix maven 2 plugin to build an Eclipse plugin and saw
> CS> that there's no way to set the Require-Bundle from the dependencies.
> CS> I'm looking for the possibility of saying that some of the deps are
> CS> part of Require-Bundle and then don't include the jars in the result
> CS> osgi bundle, nor in the Bundle-Classpath.
>
> CS> Are my assumptions wrong? if not i'm gonna work on it and contribute
> CS> it back if it's of interest.
>
> CS> Thanks
>
>
>
> --
> Peter Kriens Tel +33467542167
> 9C, Avenue St. Drézéry AOL,Yahoo: pkriens
> 34160 Beaulieu, France ICQ 255570717
> Skype pkriens Fax +1 8153772599
>
>
--
I could give you my word as a Spaniard.
No good. I've known too many Spaniards.
-- The Princess Bride
Re: Maven 2 plugin and Require-Bundle
Posted by Peter Kriens <Pe...@aQute.biz>.
Could you give an example when the package dependencies would not work
and require bundle would?
The maven plugin analyzes the bundle for referenced packages. Required
bundles should export those packages. The use of require bundle is
largely for convenience, it saved you from typing those pesky import
package statements. However, with the plugin this not an issue.
The advantage of import packages is that you get substitutability, if
you later decide to layout your bundles in a different way, or someone
decides to write an adapter for a different environment, things still
work.
Just curious.
Kind regards,
Peter Kriens
CS> Hi,
CS> I've tried the felix maven 2 plugin to build an Eclipse plugin and saw
CS> that there's no way to set the Require-Bundle from the dependencies.
CS> I'm looking for the possibility of saying that some of the deps are
CS> part of Require-Bundle and then don't include the jars in the result
CS> osgi bundle, nor in the Bundle-Classpath.
CS> Are my assumptions wrong? if not i'm gonna work on it and contribute
CS> it back if it's of interest.
CS> Thanks
--
Peter Kriens Tel +33467542167
9C, Avenue St. Drézéry AOL,Yahoo: pkriens
34160 Beaulieu, France ICQ 255570717
Skype pkriens Fax +1 8153772599