Hi,
Marc Speck schrieb:
Thanks for your time, Carsten and Christopher. I used Christopher's pom.xml
for the sling.samples.simple-demo as described above. This gives me still
errors in the console, see pom and output below.
I have to admit, this starts looking very nasty. For a starter you might
just do something like this:
<Import-Package>*;resolution:=optional</Import-Package>
This causes the bnd tool to mark each and every import as optional. This
should at least get you a starter.
On a general note, I have serious doubts about this approach of OSGi. I
mean, we are talking here only about using a single library! I wonder how
cumbersome really complicate things get?
The problem is not OSGi by itself. Or as another developer stated: "I
always thought I would develop modular libraries until I started doing
OSGi bundles".
The problem really are legacy libraries providing support/bindings for
tons of other libraries. Mixing and matching these things is a horrible
and sometimes timeconsuming task. Because not all bindings are always
needed.
So in your use case I would start like that:
(1) Embed the Abdera libraries plus commons-code in a bundle
(2) Create the bundle
(3) Dump the headers of the bundle by just feeding the
bundle to the bnd tool:
$ java -jar bnd.jar my.bundle.jar
(4) Look at the import statements and decide what to do:
-> accept some (mostly stuff available from sling)
-> decide required ones: add to the embed list and start
over at step (2)
-> decide unneeded ones (probably com.sun.* ?): mark as
optional and start over at step (2)
Marking a dependency optional comes in two ways: (1) You may set the
resolution optional by declaring the resolution:=optional directive in
the Import-Package element/header or (2) you may list the package
(wildcards allowed) in the DynamicImport-Package element header.
For example to dynamically resolve any com.sun package you could say:
<DynamicImport-Package>com.sun.*</DynamicImport-Package>
Hope this helps a bit further ... and looking forward to hearing more
about your experiences turning Abdera into OSGi-bundles.
Regards
Felix
