On Thu, Feb 25, 2010 at 3:17 PM, Jörg Schaible <joerg.schai...@gmx.de> wrote: > Hi Guillaime, > > Guillaume Nodet wrote at Donnerstag, 25. Februar 2010 15:49: > >> I just had a lively chat with Peter who kinda agreed that >> substitutability issue is mostly important for APIs. >> >> Please have a look at the Felix FAQ entry: >> http://felix.apache.org/site/apache-felix-osgi- > faq.html#ApacheFelixOSGiFAQ-Shouldabundleimportitsownexportedpackages%253F >> I haven't written it, so I can't be blame for that one. >> The last paragraph says: >> "The main time you want to export only, is if your bundle is >> purely a library bundle, then its packages will only be used if they >> are needed." > > what we are saying is, that none of us is an OSGi expert and before we > published the first artifact with such information, we took the advice of > the Apache Felix community. If they recommend now something different, we'd > like to get some "official" blessing for the changes, simply because we > cannot really review it.
+1 Niall >> In all cases, the current imports *are* wrong and need to be fixed, >> because the way they are written will fail if there is any >> incompatible change ever introduced (whatever the version). And I >> don't think we should guarantee that, especially across major >> versions. > > What has been released is final. We're not able to change that anymore. All > we can do is to change the OSGi information for new releases. > >> Anyway, the problem is the following. >> You install commons-pool 1.5 in the osgi framework. >> Then you install commons-pool 1.4 later. >> What you end up with is: >> >> ka...@root> osgi:list -l | grep commons-pool >> [ 100] [Active ] [ ] [ ] [ 60] >> mvn:commons-pool/commons-pool/1.5.4 >> [ 124] [Active ] [ ] [ ] [ 60] >> mvn:commons-pool/commons-pool/1.4 >> ka...@root> packages:exports 100 >> Commons Pool (100): org.apache.commons.pool.impl; version=1.5.4 >> Commons Pool (100): org.apache.commons.pool; version=1.5.4 >> ka...@root> packages:exports 124 >> Apache Commons Pool Bundle (124): No active exported packages. >> ka...@root> packages:imports 124 >> Commons Pool (100): org.apache.commons.pool.impl; version=1.5.4 >> Commons Pool (100): org.apache.commons.pool; version=1.5.4 >> ka...@root> osgi:start 170 >> Error executing command: Unresolved constraint in bundle >> org.apache.activemq.activemq-pool [129]: package; >> (&(package=org.apache.commons.pool.impl)(version>=1.4.0)(! > (version>=1.5.0))) > > While I see an error, it does not tell me a lot ;-) > > - Jörg > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: dev-unsubscr...@commons.apache.org > For additional commands, e-mail: dev-h...@commons.apache.org > > --------------------------------------------------------------------- To unsubscribe, e-mail: dev-unsubscr...@commons.apache.org For additional commands, e-mail: dev-h...@commons.apache.org
