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#ifndef FDPROV_H
#define FDPROV_H
#include "dataProvider.h"
#include "easylogging++.h"
#include <string>
#include <iostream>
#include <fstream>
// Rank qid features
class FileDP:public DataProvider
{
private:
std::string fname;
std::ifstream fin;
public:
FileDP(std::string fn=""):fname(fn){};
virtual int getDataSet(DataList &out){
DataEntry* e;
out.clear();
int fsize;
fin>>fsize;
LOG(INFO)<<"Feature size:"<<fsize;
out.setfSize(fsize);
while (!fin.eof()) {
e = new DataEntry;
fin>>e->rank;
if (e->rank == 0)
{
delete e;
break;
}
fin>>e->qid;
e->feature.resize(fsize);
for (int i=0;i<fsize;++i) {
fin>>e->feature(i);
}
out.addEntry(e);
}
eof=true;
return 0;
}
virtual int open(){fin.open(fname); eof=false;return 0;};
virtual int close(){fin.close();return 0;};
};
// label features
class RidFileDP:public DataProvider
{
private:
std::string fname;
std::ifstream fin;
DataList d;
bool read;
int pos;
int qid;
public:
RidFileDP(std::string fn=""):fname(fn){read=false;};
virtual int getDataSet(DataList &out){
DataEntry *e;
int fsize;
if (!read) {
d.clear();
fin >> fsize;
LOG(INFO) << "Feature size:" << fsize;
d.setfSize(fsize);
while (!fin.eof()) {
e = new DataEntry;
fin >> e->qid;
if (e->qid == "0") {
delete e;
break;
}
e->feature.resize(fsize);
e->rank=-1;
for (int i = 0; i < fsize; ++i) {
fin >> e->feature(i);
}
d.addEntry(e);
}
pos = 0;
qid = 1;
read = true;
}
out.clear();
fsize = d.getfSize();
out.setfSize(fsize);
std::vector<DataEntry*> & dat = d.getData();
for (int i=0;i<d.getSize();++i)
if (i!=pos)
{
if (dat[i]->qid == dat[pos]->qid)
{
e = new DataEntry;
e->rank=1;
dat[i]->qid=std::to_string(qid);
dat[i]->rank=qid;
}
else
{
e = new DataEntry;
e->rank=-1;
}
e->feature.resize(d.getfSize());
e->qid=std::to_string(qid);
for (int j = 0; j < fsize; ++j) {
e->feature(j) = fabs(dat[i]->feature(j) -dat[pos]->feature(j));
}
out.addEntry(e);
}
dat[pos]->qid=std::to_string(qid);
++qid;
dat[pos]->rank=qid;
while (pos<dat.size() && dat[pos]->rank!=-1)
++pos;
if (pos==d.getSize())
eof = true;
return 0;
}
virtual int open(){fin.open(fname); eof=false;return 0;};
virtual int close(){fin.close(); d.clear();return 0;};
};
#endif
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