Thanks John, that was exactly what I was looking for. Any chance of exposing this in the jni wrapper?
thanks, Kishore G On Sat, Mar 30, 2013 at 8:16 PM, K. John Wu <[email protected]> wrote: > Hi, Kishore, > > If you use the ibis::query class, there is a function getHitRows that > will return the row ids. > > If you want to get at the bit vector directly, you can use the > function getHitVector. > > John > > > On 3/30/13 10:09 AM, kishore g wrote: > > Hi, > > > > Is there a efficient way to retrieve the bitvector after applying the > > predicates. > > > > One way would be to add additional row_id column to the data and then > > use select row_id where col1=v1 col2=v2 and iterate over the row_id > > but this is inefficient because it accesses the row_id col on disk to > > retrieve the values. Instead we want to simply get the bit positions > > that are set to 1 after evaluating the predicates. > > > > Are there api's that allow me to get the resultant bit vector after > > evaluating the predicates? > > > > thanks, > > Kishore G > > > > > > _______________________________________________ > > FastBit-users mailing list > > [email protected] > > https://hpcrdm.lbl.gov/cgi-bin/mailman/listinfo/fastbit-users > > >
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