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From "Werner Punz (JIRA)" <...@myfaces.apache.org>
Subject [jira] Commented: (MYFACES-2290) Add OSGi bundle information and bundle classloader / activator
Date Wed, 17 Mar 2010 18:33:27 GMT

    [ https://issues.apache.org/jira/browse/MYFACES-2290?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12846515#action_12846515
] 

Werner Punz commented on MYFACES-2290:
--------------------------------------

Leonardo, as an outsider on the OSGI thing, we route already everything through our shared
ClassUtils.forName.
I added a pluggable loading architecture to that one to bypass the classloader issues in web
containers, you might use
the loader plugin mechanism which allows to plug in other loaders from outside at startup
(or manually by using the api)
for the OSGI classloading issues as well, because then you can route the forName through the
OSGI loading mechanism instead of having
a fixed dependency into the context loaders.



> Add OSGi bundle information and bundle classloader / activator
> --------------------------------------------------------------
>
>                 Key: MYFACES-2290
>                 URL: https://issues.apache.org/jira/browse/MYFACES-2290
>             Project: MyFaces Core
>          Issue Type: New Feature
>          Components: General
>    Affects Versions: 1.2.8-SNAPSHOT
>         Environment: OSGi (Equinox, Apache Felix, ...)
>            Reporter: Felix Röthenbacher
>            Assignee: Leonardo Uribe
>            Priority: Critical
>         Attachments: allow-ee6-versioned-apis.diff, MYFACES-2290-no-activator-2.patch,
MYFACES-2290-no-activator.patch, myfaces-core.diff.txt, myfaces-shared.diff.txt, myfaces-test-helloworld-osgi-pax-web.zip,
myfaces-test-helloworld-osgi-springdm.zip
>
>
> The provided patch will add OSGi information to bundle manifest. A bundle activator class
makes the MyFaces framework aware that it is running in a bundle environment. A bundle classloader
is used to load classes and resources from the bundle classpath. The patch doesn't require
any new runtime dependencies and doesn't affect class loading in a non-OSGi environment. Though,
small modifications to classloading were needed. This was mainly replacing Thread.currentThread.getContextClassLoader()
with ClassUtils methods.
> To run MyFaces in an OSGi environment both bundles (myfaces-api and myfaces-impl) have
to be started in the OSGi container. Additionally, the myfaces-impl bundle has to be made
available to myfaces-api. Use a fragment bundle with myfaces-api as Fragment-Host and myfaces-impl
as Required-Bundle.

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