After researching some, I have a question in regards to double based attributes.

In the lucene docs, it appears that to speed up searching against double values, it is recommended to convert the value to a more sortable especially if negative numbers are used. The docs recommend using [url]
http://svn.apache.org/viewvc/incubator/ ... rev=382610[/url] to convert to a sortable value.

I looked at the built-in DoubleBridge and it doesn't use this function.

My questions are:
- is the built-in DoubleBridge adequate for searching/sorting?
- or should I create a SortableDoubleBridge that utilizes the Lucene recommended approach?

Has any one else used double based values in the searching? which implementation was used?

Hopefully I made my point clear.

Thanks
- Doug

thanks for the valuable information.
I don't remember to have used the DoubleBridge recently; did you test it?
I often use other number bridges and I never had a problem with sorting.
In case you need to build your own SortableDoubleBridge we should include it in Search; however this would break backwards compatibility as the indexed terms are going to be different.

I'll open a task so this is not lost, if you can make a test and attach it that would be very helpful:
http://opensource.atlassian.com/projects/hibernate/browse/HSEARCH-331

thanks