Hi, Hao Loi, Sounds like you are directly using the class ibis::direkte, if that is the case, you should have access to the data partition object ibis::part, which holds a list of all columns.
From the index object, you can access the column pointer through the member variable ibis::index::col, which in turn has a function ibis::column::partition that tells you which data partition the column belongs. From the ibis::part object, you can look up another column by name or by position. hope this helps. John On 11/21/2010 3:27 PM, Hao Loi wrote: > > Hi, I have a need to lookup a second column while I am creating a bitmap index > using the ibis::direkte class. What is the best way to approach the above > problem? There is a dataset global variable in util.h. Can I use that to > access another column while I am in ibis::direckte? If so, could you show me > an example how to do it? > > > Thanks an advance. > > -- > Open WebMail Project (http://openwebmail.org) > > _______________________________________________ > FastBit-users mailing list > [email protected] > https://hpcrdm.lbl.gov/cgi-bin/mailman/listinfo/fastbit-users _______________________________________________ FastBit-users mailing list [email protected] https://hpcrdm.lbl.gov/cgi-bin/mailman/listinfo/fastbit-users
