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https://issues.apache.org/jira/browse/SLING-6515?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15931641#comment-15931641
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Konrad Windszus edited comment on SLING-6515 at 3/19/17 2:47 PM:
-----------------------------------------------------------------

It is not possible to influence Error Response Message with the current 
AbstractPostResponse.java:220 setError method implementation 
(https://github.com/apache/sling/blob/4df9ab2d6592422889c71fa13afd453a10a5a626/bundles/servlets/post/src/main/java/org/apache/sling/servlets/post/AbstractPostResponse.java#L221).
 
In case of exception it creates a new SlingException and instead of taking 
original Throwable error as parameter, sets null.

AbstractPostResponse method:
{code}
public void setError(Throwable *error*) {
        setProperty(PN_ERROR, new SlingException("Exception during response 
processing.", null));
}
{code}

Because of this method, the Response message is always the same.


was (Author: kama):
It is not possible to influence Error Response Message with the current 
AbstractPostResponse.java:220 setError method implementation 
(https://github.com/apache/sling/blob/4df9ab2d6592422889c71fa13afd453a10a5a626/bundles/servlets/post/src/main/java/org/apache/sling/servlets/post/AbstractPostResponse.java#L221).
 
In case of exception it creates a new SlingException and instead of taking 
original Throwable error as parameter, sets null.

AbstractPostResponse method:
public void setError(Throwable *error*) {
        setProperty(PN_ERROR, new SlingException("Exception during response 
processing.", null));
}

Because of this method, the Response message is always the same.

> 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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