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From "Peter W." <pe...@marketingbrokers.com>
Subject Re: precision double sortable String
Date Mon, 02 Apr 2007 20:44:19 GMT
One more thing...

It could optionally be indexed and stored as a String
then contents of the Hits object could be placed into
a Collection with a comparator that sorts double
values in reverse order.

Regards,

Peter W.


On Apr 2, 2007, at 12:02 PM, "Peter W." <peter@marketingbrokers.com>   
wrote:

> Hi,
>
> I'm trying to turn a double with decimal point
> precision fifteen digits to the left into a sortable
> String for Lucene (.346210426731253).
>
> NumberTools is for longs so doesn't apply.
>
> In Solr, NumberUtils.double2sortableStr prints
> out a literal question mark character '?' .
>
> I tried making it a float first but the formatting
> also did not work w/NumberUtils.float2sortableStr.
>
> Interestingly, I was able to write a BigDecimal
> helper class, use setScale(15), longValue() then
> pass it to NumberTools and get a padded result.
>
> .346210426731253 becomes 000000
> 1.346210426731253 becomes 000001
> 2.346210426731253 becomes 000002

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