Prepend zeros to every number out to a fixed length determined by the maximum possible value. As an example, 0055 < 0100 in a lexical ordering where the maximum value is 9999.
On Fri, Oct 22, 2010 at 5:05 AM, Christian Decker < decker.christ...@gmail.com> wrote: > Ever since I started implementing my second level caches I've been > wondering on how to deal with this, and thus far I've not found a good > solution. > > I have a CF acting as a secondary index, and I want to make range queries > against it. Since my keys are Long I simply went ahead and wrote them as > they were, which resulted them in being stored as UTF8 Strings. Now I'm > having the problem that if I want to make a range query on those keys (lets > say 1-100) they will be matched as string against each other, meaning that > 55 > 100, which is not what I want. > > Is there a simple way to make such queries by just adjusting the key? > Specifically I'm wondering if I could create a byte representation of the > Long that would also be lexicographically ordered. > > Anyone had a similar problem? > > Regards, > Chris >
