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https://issues.apache.org/jira/browse/SLING-6515?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15931721#comment-15931721
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Konrad Windszus commented on SLING-6515:
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Even if the new message would contain as cause the original exception, this
would not be given out via HTMLResponse or JSONResponse, because both just call
Property.toString(). {{Throwable.toString()}} does not expose the wrapped
exception though, see
https://docs.oracle.com/javase/7/docs/api/java/lang/Throwable.html#toString().
I am wondering, why wrapping the exception is necessary at all.
> Sling Post Processor considering validation model as well
> ---------------------------------------------------------
>
> Key: SLING-6515
> URL: https://issues.apache.org/jira/browse/SLING-6515
> Project: Sling
> Issue Type: Improvement
> Components: Validation
> Reporter: Konrad Windszus
>
> It should be possible to optionally enable a Sling Post Processor which
> validates the incoming parameters against a validation model. In case the
> incoming parameters are not valid, there must be an error response.
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