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https://issues.apache.org/jira/browse/CONFIGURATION-527?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13587517#comment-13587517
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Oliver Heger commented on CONFIGURATION-527:
--------------------------------------------
IIRC, backwards compatibility as mentioned by Jörg was the reason why it was
implemented that way. We are currently working on version 2.0 which will break
binary compatibility, so the patch can be applied.
> clearPropertyDirect() in AbstractConfiguration should be abstract
> -----------------------------------------------------------------
>
> Key: CONFIGURATION-527
> URL: https://issues.apache.org/jira/browse/CONFIGURATION-527
> Project: Commons Configuration
> Issue Type: Improvement
> Components: Build
> Affects Versions: 1.9
> Reporter: Matthias Richter
> Priority: Minor
> Attachments: patch.diff
>
>
> The method clearPropertyDirect() in AbstractConfiguration has an empty
> implementation body. It is documented as "should be overwritten" but is not
> marked abstract.
> It should be abstract to prevent errors when subclassing
> AbstractConfiguration and using the clear() method where (indirectly)
> clearPropertyDirect() is being called.
> See addPropertyDirect() for comparison, which is abstract.
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