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From Fran├žois LEIBER (JIRA) <j...@apache.org>
Subject [jira] Commented: (COLLECTIONS-286) New util method: CollectionUtils.getSingleton(List<T> singletonList) which returns the single object in the list or throws an exception
Date Mon, 07 Sep 2009 08:57:57 GMT

    [ https://issues.apache.org/jira/browse/COLLECTIONS-286?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12752054#action_12752054
] 

Fran├žois LEIBER commented on COLLECTIONS-286:
---------------------------------------------

This would be incredibly useful if indeed it takes a Collection instead of a List, otherwise
I don't see the point.
Voting for it, if the title is changed.

> New util method: CollectionUtils.getSingleton(List<T> singletonList) which returns
the single object in the list or throws an exception
> ---------------------------------------------------------------------------------------------------------------------------------------
>
>                 Key: COLLECTIONS-286
>                 URL: https://issues.apache.org/jira/browse/COLLECTIONS-286
>             Project: Commons Collections
>          Issue Type: New Feature
>            Reporter: Geoffrey De Smet
>             Fix For: Generics
>
>         Attachments: extract.svn.diff
>
>
>     public <T> T getSingleton(List<T> singletonList)
>     {
>         if (singletonList.size() != 1)
>         {
>             throw new IllegalArgumentException("The singletonList size ("
>                     + singletonList.size() + ") should be 1.");
>         }
>         return singletonList.get(0);
>     }

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