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Re: Sort Algorithm Question
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Re: Sort Algorithm Question


  • Subject: Re: Sort Algorithm Question
  • From: James Cicenia <email@hidden>
  • Date: Wed, 23 Feb 2005 14:31:06 -0600

If one needs to have more than one comparison does one need to subclass the main class for each compareTo ??

Believe it or not I have never used these before... and I don't quite understand the difference or benefit between the
generic Java vs. NSComparator.


- James

On Feb 23, 2005, at 1:03 PM, Chuck Hill wrote:

You want this as part of a fetch? I think you will need to work with DB specific collation sequences.
You want to do this in-memory? com.webobjects.foundation.NSComparator is your friend!


Chuck


On Feb 23, 2005, at 10:58 AM, James Cicenia wrote:

Hello -

I would like to do a sort with a primary and secondary sort both ascending, HOWEVER,
I want the primary sort which is comprised of dates to have the nulls sorted towards the bottom.


Here is an example

AAAA	Date 1
AAAA	Date 2
BBBB	Date 1
BBBB        ----------
CCCC	Date 3
CCCC	Date 4
CCCC       ---------

Any thoughts on the most efficient means to do this?

- James Cicenia

--
Practical WebObjects - a book for intermediate WebObjects developers who want to increase their overall knowledge of WebObjects, or those who are trying to solve specific application development problems.
http://www.global-village.net/products/practical_webobjects





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References: 
 >Sort Algorithm Question (From: James Cicenia <email@hidden>)
 >Re: Sort Algorithm Question (From: Chuck Hill <email@hidden>)

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