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From "Andrei Pozolotin (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (PIVOT-742) pluggable classloader
Date Tue, 14 Jun 2011 20:32:47 GMT

    [ https://issues.apache.org/jira/browse/PIVOT-742?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13049390#comment-13049390
] 

Andrei Pozolotin commented on PIVOT-742:
----------------------------------------

advice from Richard:

https://issues.apache.org/jira/browse/FELIX-2951

#################################################

    * Bracket calls into libraries using TCCL to set/unset it to the
      desired value.

    * Modify libraries using TCCL to better guess which class loader to use.
          o Maybe the client passes a client-side object which has the
            correct class loader.
          o Explicitly ask for a class loader in the library method.

    * Use services.

    * Use own context finder.

################################################# 

> pluggable classloader
> ---------------------
>
>                 Key: PIVOT-742
>                 URL: https://issues.apache.org/jira/browse/PIVOT-742
>             Project: Pivot
>          Issue Type: Improvement
>            Reporter: Andrei Pozolotin
>         Attachments: CLPlugin.java, CLPluginTCCL.java, CLProvider.java, UseCase.java,
patch_2011-06-15_bxml-classloader.patch
>
>
> pluggable classloader:
> 1) in current pivot trunk, TCCL, Thread.currentThread().getContextClassLoader().... is
mentioned 105 times
> I suggest to centralize it and replace with pluggable classloader (which can use TCCL
by default);
> 2) review all other uses of Class.getResource(), which are not using TCCL, and convert
when possible;
> motivation:
> https://issues.apache.org/jira/browse/PIVOT-22
> https://issues.apache.org/jira/browse/FELIX-2951
> http://njbartlett.name/2010/08/30/osgi-readiness-loading-classes.html 
> http://wiki.eclipse.org/index.php/Context_Class_Loader_Enhancements
> http://stackoverflow.com/questions/2198928/better-handling-of-thread-context-classloader-in-osgi
> http://mail-archives.apache.org/mod_mbox/pivot-user/201105.mbox/%3C4DCDF889.10506@gmail.com%3E

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