Extending looked like a bit of a boondoggle, because all of the useful fields in the class are private, not protected. I also ran into another architectural question, how does one pass a value (a-la constructor) into one of these classes? If I'm going to use this to filter based on a threshold, I'd need to pass that threshold in somehow.
On Wed, Aug 21, 2013 at 9:49 AM, John Vines <[email protected]> wrote: > There's no way to extend the ColumnQualietyFilter via configuration, but > it sounds like you are on top of it. You just need to extend the class, > possibly copy a bit of code, and change the equality check to a compareTo > after converting the Strings to Doubles. > > > On Wed, Aug 21, 2013 at 10:00 AM, Marc Reichman < > [email protected]> wrote: > >> I have some data stored in Accumulo with some scores stored as column >> qualifiers (there was an older thread about this). I would like to find a >> way to do thresholding when retrieving the data without retrieving it all >> and then manually filtering out items below my threshold. >> >> I know I can "fetch" column qualifiers which are exact. >> >> I've seen the ColumnQualifierFilter, which I assume is what's in play >> when I fetch qualifiers. Is there a reasonable pattern to extend this and >> try to use it as a scan iterator so I can do things like "greater than" a >> value which will be interpreted as a Double vs. the string equality going >> on now? >> >> Thanks, >> Marc >> > >
