[jira] [Commented] (CONFIGURATION-636) Allow a user-defined order in the PropertiesConfigurationLayout.save method.

["Oliver Heger (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/CONFIGURATION-636?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15368228#comment-15368228 ] 

Oliver Heger commented on CONFIGURATION-636:
--------------------------------------------

Sounds doable. I will have a look soon.

> Allow a user-defined order in the PropertiesConfigurationLayout.save method.
> ----------------------------------------------------------------------------
>
>                 Key: CONFIGURATION-636
>                 URL: https://issues.apache.org/jira/browse/CONFIGURATION-636
>             Project: Commons Configuration
>          Issue Type: Improvement
>          Components: Format
>    Affects Versions: 2.0
>            Reporter: Tim Lark
>
> For .properties file manipulation, I have a use case that requires something like "addKeyAfterKey(String keyToAdd, String afterKey)".  This allows a property to be written after some other property when saving.
> I have extended PropertiesConfigurationLayout to accomplish this new behavior.  Unfortunately, the save method iterates over a private member (layoutData), so I have no control over the final file order.
> An easy fix for my use case would be to change line 564 of PropertiesConfigurationLayout.java to use the public getKeys() method instead of layoutData.keySet():
> {noformat}
> FROM: for (String key : layoutData.keySet())
> TO:   for (String key : getKeys())
> {noformat}
> Then I could override getKeys() to return the required order for saving.



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