On 9/20/10 16:23, Bengt Rodehav wrote:
*
Since moving to Felix 3 I've noticed a lot of BLAMED ON logging I haven't
seen before. I now use Felix 3.0.2. Can someone help me interpret the
following exception?
Yes, those are coming from the new resolver implementation.
Caused by: org.osgi.framework.BundleException: Constraint violation for
package 'se.digia.sts.persistence' when resolving module 32.0 between
existing import 28.0.se.digia.sts.persistence BLAMED ON [[32.0] package;
(&(package=se.digia.sts.persistence)(version>=1.0.0))] and uses constraint
29.0.se.digia.sts.persistence BLAMED ON [[32.0] package;
(package=se.digia.sts.refdata.domain)]
This is saying that while trying to resolve 32, we selected 28 as the
provider of se.degia.sts.persistence since 32 imported this package
(this is the first BLAMED ON, which is basically saying this choice was
blamed on the fact that bundle 32 imports the package). However, this
choice was problematic since we can see the same package from bundle 29
due to the fact that 32 imports se.degia.sts.refdata.domain from it
(this is the second BLAMED ON).
So, I would guess that this means that bundle 29 exports both the
persistence and domain packages and that its domain package uses its
persistence package. This would then expose 32 to two providers of the
persistence package which cannot be allowed.
In theory, it seems like the original import for the persistence package
should be satisfiable by 29. If this is not happening, then maybe 29
isn't exporting the package with version 1.0.0 or higher. Just a guess.
In this case the bundle could not be started. Sometimes I get similar
logging messages but the bundle is still started. I haven't fully understood
what this means.
Some of these messages are just logged when the error happens, but an
alternative solution is found so the message is only informational at
that point.
-> richard
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