commons-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "David J. M. Karlsen (JIRA)" <j...@apache.org>
Subject [jira] Updated: (LANG-291) Null-safe comparison methods for finding most recent / least recent dates.
Date Thu, 02 Nov 2006 12:41:23 GMT
     [ http://issues.apache.org/jira/browse/LANG-291?page=all ]

David J. M. Karlsen updated LANG-291:
-------------------------------------

    Attachment: ObjectUtils-patch-rev470351.txt

PLease delete the DateUtils patch, and use this more general patch with max(Comparable, Comparable)
an min(Comparable, Comparable) methods in ObjectUtils.

A compareTo( Comparable, Comparable ) is left out, as this would violate Java protocol, see
http://java.sun.com/j2se/1.4.2/docs/api/java/lang/Comparable.html

"Note that null is not an instance of any class, and e.compareTo(null) should throw a NullPointerException
even though e.equals(null) returns false."


> Null-safe comparison methods for finding most recent / least recent dates.
> --------------------------------------------------------------------------
>
>                 Key: LANG-291
>                 URL: http://issues.apache.org/jira/browse/LANG-291
>             Project: Commons Lang
>          Issue Type: Improvement
>         Environment: N/A
>            Reporter: David J. M. Karlsen
>             Fix For: 3.0
>
>         Attachments: DateUtils-patch-rev468924.txt, ObjectUtils-patch-rev470351.txt
>
>
> /**
>      * <p>
>      * Null-safe date comparison.
>      * Returnes the most recent date if date1 and date2 is non-null. 
>      * If one of the dates are null, the non-null will be returned.
>      * If both are null, null will be returned.
>      * </p>
>      * @param date1
>      * @param date2
>      * @return
>      */
>     public static Date mostRecent( Date date1, Date date2 )
>  /**
>      * <p>
>      * Null-safe date comparison.
>      * Returnes the least recent (oldest) date if date1 and date2 is non-null. 
>      * If one of the dates are null, the non-null will be returned.
>      * If both are null, null will be returned.
>      * </p>
>      * @param date1
>      * @param date2
>      * @return
>      */
>     public static Date leastRecent( Date date1, Date date2 )

-- 
This message is automatically generated by JIRA.
-
If you think it was sent incorrectly contact one of the administrators: http://issues.apache.org/jira/secure/Administrators.jspa
-
For more information on JIRA, see: http://www.atlassian.com/software/jira

        

---------------------------------------------------------------------
To unsubscribe, e-mail: commons-dev-unsubscribe@jakarta.apache.org
For additional commands, e-mail: commons-dev-help@jakarta.apache.org


Mime
View raw message