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From "Henri Yandell (JIRA)" <j...@apache.org>
Subject [jira] Commented: (LANG-358) ObjectUtils.coalesce
Date Thu, 13 Aug 2009 09:01:14 GMT

    [ https://issues.apache.org/jira/browse/LANG-358?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12742774#action_12742774
] 

Henri Yandell commented on LANG-358:
------------------------------------

Ponders coalesce vs 'firstNotNull'. 

Interesting that the first doc I found on SQL coalesce uses firstNotNull as the label:

http://msdn.microsoft.com/en-us/library/ms190349.aspx

> ObjectUtils.coalesce
> --------------------
>
>                 Key: LANG-358
>                 URL: https://issues.apache.org/jira/browse/LANG-358
>             Project: Commons Lang
>          Issue Type: New Feature
>            Reporter: Jörg Gottschling
>            Priority: Minor
>             Fix For: 3.0
>
>         Attachments: ObjectUtils.java, ObjectUtilsTest.java
>
>
> I like to see the coalesce-function from SQL implemented in ObjectUtils. Something like
this:
> <T> T ObjectUtils.coalesce(T... t)
> The first object, which is not null will be returned. This would replace all the defaultValue/defaultString/...
methods, with al flexibler and shorter method. It will also reuse an existing name.
> I think it's simple. Perhaps there should be overloading methods with fixed parameter
sizes. Following the jdk this seems to a little faster:
> <T> T ObjectUtils.coalesce(T t1, T t2)
> <T> T ObjectUtils.coalesce(T t1, T t2, T t3)
> ...
> I would provide it, including tests, if you like.

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