Classloader isolation is not specific to Guice. Something must be going on if you get incompatible guava version when using maven 3.0+. This is why I recommend setting up a standalone example to investigate what it is.
On October 3, 2014 4:57:57 PM EDT, Christofer Dutz <christofer.d...@c-ware.de> wrote: >Hi Igor, > >well I currently don't have a small example ... Flexmojos as the Pluin >is a pretty large beast and Falcon isn't a trivial example. > >But I have been investigating this problem a little more and eventually >the problems comes from how Flexmojos is built. >Currently the plugin is built using the same mechanisms used in Maven >3.0 and hereby relying heavily on Plexus. It seems a guice migration >layer had been added but the whole thing seems to be built and running >in some sort of compatability mode. Eventually I should rewrite >Flexmojos to guice and more modern maven versions (I am having a quite >some trouble with Maven versions greater than 3.1) > >But if you say that even if Maven comes with one version, a plugin >should be able to work with another, then that's good enough for me, >I'll start migrating Flexmojos. > >Chris > > >-----Ursprüngliche Nachricht----- >Von: Igor Fedorenko [mailto:i...@ifedorenko.com] >Gesendet: Freitag, 3. Oktober 2014 21:59 >An: dev@maven.apache.org >Betreff: Re: Version conflicts with guava library > >What version of Maven do you use? Can you provide a small standalone >example that demonstrate the problem? Like a sample plugin with a >trivial demo project, for example. > >Generally, each Maven plugin runs in its own classloader with only >subset of Maven core classes available to it. Guava is not part of that >subset and plugins should be able to use whatever version of Guava they >like. > >-- >Regards, >Igor > >On 2014-10-03, 15:46, Christofer Dutz wrote: >> Hi, >> >> I'm currently working on a plugin for the Apache Flex compiler >Falcon. This uses Guava in a version above 15. >> Now maven seems to come with a Guava version ... 0.9.9 for Maven >3.0.x, something about 11 for 3.1 and above. >> The problem is that from version 15 on there was an API change Falcon >depends upon. No matter what I tried, I always get an error during >runtime that: >> >> Caused by: java.lang.NoSuchMethodError: >> >com.google.common.cache.CacheBuilder.build(Lcom/google/common/cache/Ca >> cheLoader;)Lcom/google/common/cache/LoadingCache; >> >> Because till version 15 the return type was Cache and not >LoadinCache. >> >> Now to my question ... if I use a library that Maven itself comes >with ... is there a way to use that version? Currently it seems I would >require my users to update to Maven 3.2.x which will definitely make >some pretty unhappy. >> >> Chris >> >> >> > >--------------------------------------------------------------------- >To unsubscribe, e-mail: dev-unsubscr...@maven.apache.org For additional >commands, e-mail: dev-h...@maven.apache.org > > >--------------------------------------------------------------------- >To unsubscribe, e-mail: dev-unsubscr...@maven.apache.org >For additional commands, e-mail: dev-h...@maven.apache.org -- Sent from my Android device with K-9 Mail. Please excuse my brevity. --------------------------------------------------------------------- To unsubscribe, e-mail: dev-unsubscr...@maven.apache.org For additional commands, e-mail: dev-h...@maven.apache.org
