Reinhard Poetz wrote:
Daniel Fagerstrom wrote:
<snip/>
--- o0o ---
AFAICS, we need to change OSGi framework from Knopflerfish to the one
from Eclipse as the DirectoryGenerator and similar things are
necessary in Cocoon. I can't say that I'm to happy about it as the
documentation for the OSGi framework of Eclipse is sparse and
unorganized, while the Knopflerfish documentation at least is OK.
Furthermore the Eclipse OSGi framework has been available for
standalone use just a few months while Knopflerfish has been
available for a couple of years. Despite this there are of course all
reasons to believe that the Eclispe OSGi implementation is of high
quality as it is the kernel for Eclipse 3.0 and 3.1 and as IBM has
been a member of OSGi since the starting and has another products in
the area.
Personally I like the idea of building Cocoon on Eclipse but this is
just a gut feeling.
I guess most of us share that feeling. Eclipse has become one of the
strongest brands in OS.
Apart from not-existing documentation I can only see one issue as
Eclipse is a desktop application (= one single user) and Cocoon a
server application (many parallel users). But I know too little about
OSGi (and Eclipse) if this could really be a problem.
I don't think the multi user aspect should be a problem. It will mainly
be the concern for the servlet (Cocoon) and for the servlet container
bundle (e.g. a Yetty based one). Furthermore OSGi has a standardized
user admin service and seem to be build for handling multiple users.
--- o0o ---
For testing the Eclipse OSGi framework (http://www.eclipse.org/osgi/,
http://dev.eclipse.org/viewcvs/index.cgi/%7Echeckout%7E/platform-core-home/main.html),
one extract the org.eclipse.osgi_3.1.0.jar from Eclipse 3.1M7 or
later (the RCP Runtime Binary is the smallest one):
$ java -jar org.eclipse.osgi_3.1.0.jar -console
osgi> help
...
--- o0o ---
I feel a little bit like geting a Cocoon servlet to run in the
current OSGi framework before changing, so that we have something
that is more motivating for others to work at. But then we need to
change to the Eclipse OSGi framework IMO. Any help would be greatly
appriciated.
I will work on the block deployer so that I (hopefully) can
demonstrate it at the Blockathon. After finishing it I plan to learn
more about the implementation of blocks ...
I think that the use of OSGi will or at least can affect the way we
deploy blocks. There are bundle repositories and deployment
functionality for OSGi, http://oscar-osgi.sourceforge.net/. Eclipse also
has plugin (bundle) repositories and a deplyment framework. Maven2 seem
promissing.
IMO it would be good if we could discuss block deployment at the list a
bit, so that we can assure that all parts fit together.
/Daniel
- Re: [osgi] Changing framework? Daniel Fagerstrom
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