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https://issues.apache.org/jira/browse/WSS-580?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Colm O hEigeartaigh closed WSS-580.
-----------------------------------

> ThreadLocalSecurityProvider returns null instead of empty collection
> --------------------------------------------------------------------
>
>                 Key: WSS-580
>                 URL: https://issues.apache.org/jira/browse/WSS-580
>             Project: WSS4J
>          Issue Type: Bug
>    Affects Versions: 2.2.0
>            Reporter: Domislavskiy Michael
>            Assignee: Colm O hEigeartaigh
>             Fix For: 2.2.0, 2.0.8, 2.1.6
>
>         Attachments: site.patch
>
>
> in org.apache.wss4j.common.crypto.ThreadLocalSecurityProvider  
> is violated the rule 
> "return empty arrays or collections, not nulls" as a result  crash NPE in 
> org.apache.wicket.extensions.markup.html.captcha.CaptchaImageResource#detectBestFittingService()
> for (Provider.Service service : provider.getServices()) {
> ...
> }



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