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https://issues.apache.org/jira/browse/SLING-8130?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16696629#comment-16696629
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Nicolas Peltier commented on SLING-8130:
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fixed, adding {{$if${...}nodeName}} syntax in write configuration tree node name
> conditional write of some parts of a tree in writepipe
> ------------------------------------------------------
>
> Key: SLING-8130
> URL: https://issues.apache.org/jira/browse/SLING-8130
> Project: Sling
> Issue Type: Improvement
> Components: pipes
> Affects Versions: pipes 3.0.2
> Reporter: Nicolas Peltier
> Assignee: Nicolas Peltier
> Priority: Major
>
> SLING-7614 brought in expressions in node names, but nothing to test if the
> node should be written at all or not.
> a null check should be implemented on a binding, without using ternary
> operator or parenthesis that won't be able to be persisted in a nice way
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