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#ifndef FDPROV_H
#define FDPROV_H
#include "dataProvider.h"
#include "easylogging++.h"
#include <string>
#include <iostream>
#include <fstream>
class FileDP:public DataProvider
{
private:
std::string fname;
std::ifstream fin;
public:
FileDP(std::string fn=""):fname(fn){};
void setFname(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;};
};
#endif
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