Greetings FastBit C++ gurus!
I'm trying to build an ibis::table from a vector of type
ibis::table::bufferList but the array isn't growing. Below is an excerpt that
I'm running on each column. Any ideas what I'm doing wrong here?
Andrew
std::vector<ibis::table::bufferList> part_results;
// in separate threads, fill a bufferList for each partition and
part_results.push_back(buffers);
// after all the parts have been processed
ibis::table* res = concatenate_results();
// concatenate_results() loops over the columns and calls concatenate_column()
void concatenate_column(ibis::table::bufferList& tbuff, ibis::table::typeList
&ttypes, size_t col) {
std::cerr << "concatenate_column(" << col << ")" << std::endl;
tbuff[col] = &part_results[0][col];
for(size_t i=1; i < part_results.size(); i++) {
std::cerr << "i=" << i << " b1=";
switch(ttypes[col]) {
case ibis::BYTE:
{
ibis::array_t<signed char>* b1 = static_cast<ibis::array_t<signed
char>*>(tbuff[col]);
ibis::array_t<signed char>* b2 = static_cast<ibis::array_t<signed
char>*>(part_results[i][col]);
std::cerr << b1->size() << " b2=" << b2->size();
b1->insert(b1->end(),b2->begin(),b2->end());
std::cerr << " b1 now " << b1->size() << std::endl; // b1 is 0
break;
}
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