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From "Marshall Schor (JIRA)" <...@uima.apache.org>
Subject [jira] [Commented] (UIMA-6057) Avoid falsely switching classloader
Date Fri, 14 Jun 2019 19:36:00 GMT

    [ https://issues.apache.org/jira/browse/UIMA-6057?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16864381#comment-16864381

Marshall Schor commented on UIMA-6057:

I looked at the patch.  

It changes the switcher to return a boolean saying if it was switched.

The switch back is augmented to test a passed-in parameter (was_switched) - if that's set,
then the switch back works like before - testing to see if the previous loader is different,

If the parameter is false, then the switch back won't happen (even if the previous loader
is different).  

In the framework code, as you've pointed out, this parameter is not needed, and is redundant.
I presume in some Ruta context, it is set false to block the switching back.  Is that correct?

I'd like to document this as clearly as possible for future maintainers.

> Avoid falsely switching classloader
> -----------------------------------
>                 Key: UIMA-6057
>                 URL: https://issues.apache.org/jira/browse/UIMA-6057
>             Project: UIMA
>          Issue Type: Bug
>            Reporter: Matthias Koch
>            Priority: Major
>         Attachments: UIMA-6057.diff
> In some cases the classloader is switched back, although it hasn't be switched before

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