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https://issues.apache.org/jira/browse/SLING-4199?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14227398#comment-14227398
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Radu Cotescu commented on SLING-4199:
-------------------------------------
Indeed, there are cases when a null value doesn't mean a failure - see the
{{JsUseProvider}}.
> Remove ProviderOutcome
> ----------------------
>
> Key: SLING-4199
> URL: https://issues.apache.org/jira/browse/SLING-4199
> Project: Sling
> Issue Type: Improvement
> Components: Extensions
> Reporter: Konrad Windszus
> Fix For: Scripting Sightly Engine 1.0.0
>
>
> What is the reason for having the {{ProviderOutcome}} interface
> (https://github.com/fmeschbe/sling/blob/trunk/contrib/scripting/sightly/engine/src/main/java/org/apache/sling/scripting/sightly/use/ProviderOutcome.java).
> To me it seems like it acts as a wrapper around a boolean and an Object. But
> since in the case of failure there is never an Object being returned, why
> can't we just rely on the Object instead and just assume a failure in case
> null was returned?
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