[JIRA] Commented: (SSPCPP-466) de-duping resolver plugin

[Scott Cantor (JIRA)]

    [ https://issues.shibboleth.net/jira/browse/SSPCPP-466?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14164#comment-14164 ] 

Scott Cantor commented on SSPCPP-466:
-------------------------------------

This turns out to be a very ambiguous issue, which is why the duplicates exist. The SP just isn't designed to solve the "problem" well, and I'm not clear  yet what the problem actually is. I would suggest taking this to the dev list. There are multiple places where some kind of code could be added, but nothing that wouldn't create ambiguities because of the features for aliasing of attributes.

There are two cases I see:

- you require a single-valued variable/header
- you don't

If the former, then it seems like duplicates aren't really the problem, because multiple, different values will be just as much an issue for you. If the latter, you have no issue, since handling multiple values requires the same work whether there are duplicates or not.

So I'm wondering, I guess, if this is really about single values, and not duplicates.

> de-duping resolver plugin
> -------------------------
>
>                 Key: SSPCPP-466
>                 URL: https://issues.shibboleth.net/jira/browse/SSPCPP-466
>             Project: Shibboleth SP - C++
>          Issue Type: New Feature
>          Components: Attribute Resolution / Filtering
>            Reporter: martin.haase at idp.protectnetwork.org
>            Assignee: Scott Cantor
>            Priority: Minor
>
> Request for an attribute resolver plugin that eliminates duplicate values. See http://comments.gmane.org/gmane.comp.web.shibboleth.user/18350 , which already has 2 users that would like to have this functionality. +1 from my use case, also with a SimpleAggregationAttributeResolver.

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