[FastBit-users] Question about verifying an index was built

[Jong Choi]

Hi,

I am trying to verify if an index is there before querying but haven't
found a good solution yet. So far, I tried to see
ibis::column::indexSize() but I got "-1". Is there any good way to
check such thing?

Just for your reference, here is part of my code:

std::auto_ptr<ibis::tablex> ta(ibis::tablex::create());
int buf[] = {10, -21, 32, -43, 54, -65, 76, -87, 98, -127};

ta->addColumn("col1", ibis::INT);
ta->append("col1", 0, 10, buf);

std::auto_ptr<ibis::table> tb(ta->toTable());
tb->buildIndex("col1");

ibis::constPartList parts;
int ierr = tb->getPartitions(parts);
assert(ierr > 0);

for (ibis::constPartList::const_iterator it = parts.begin(); it !=
parts.end(); ++it)
{
        ibis::part::info *info = (*it)->getInfo();
        std::clog << "name :" << info->name << std::endl;

        int nColumns = (*it)->nColumns();
        for (int i = 0; i < nColumns; i++)
        {
            ibis::column * col = (*it)->getColumn(i);
            std::clog << "size :" << col->indexSize() << std::endl;
        }
}

// Query
ibis::table* res = tb->select("val", "val > 0");
...

I will appreciate any advice or help.

Thanks,

Jong
_______________________________________________
FastBit-users mailing list
FastBit-users@hpcrdm.lbl.gov
https://hpcrdm.lbl.gov/cgi-bin/mailman/listinfo/fastbit-users