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https://issues.apache.org/jira/browse/SLING-2779?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13747858#comment-13747858
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Carsten Ziegeler commented on SLING-2779:
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I think we should make this as simple as possible. Creating a copy of an
immutable map, deleting properties and then passing it into the composite map,
seems to be much easier for me than having all these edge cases within the
composite value map.
> Support for default properties values of a resource
> ---------------------------------------------------
>
> Key: SLING-2779
> URL: https://issues.apache.org/jira/browse/SLING-2779
> Project: Sling
> Issue Type: New Feature
> Components: API
> Affects Versions: API 2.3.0
> Reporter: Gilles Knobloch
> Attachments: SLING-2779.patch
>
>
> I already noticed several times it would be useful to be able to specify a
> default properties for a resource:
> * if the resource itself contains the property, it will override the default
> one.
> * but if it doesn't, the default value is used.
> This could be done either via:
> * specifying a {{sling:defaults}} property on the resource, which contains
> the path to the resource which properties will be used by default.
> * providing a default map of properties
> Attaching a patch for review.
> For testing purpose, I put it under {{org.apache.sling.defaults}}, but I
> imagine it could go to {{org.apache.sling.api.resource}}.
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