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//
// Created by joe on 5/13/15.
//
#include "fileDataProvider.h"
#include <random>
#include <ctime>
using namespace std;
// Random generator
mt19937 gen;
int FileDP::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;
}
void RidFileDP::readEntries() {
DataEntry *e;
int fsize;
d.clear();
fin >> fsize;
LOG(INFO) << "Feature size:" << fsize;
if (!maskinit)
{
for (int i=0;i<fsize;++i)
mask.push_back(1);
}
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;
double tin;
for (int i = 0; i < fsize; ++i) {
fin >> tin;
e->feature(i) = tin*mask[i];
}
d.addEntry(e);
}
pos = 0;
std::vector<DataEntry*> & dat = d.getData();
while (pos<dat.size() && dat[pos]->rank!=-1 && dat[pos]->qid!="-1")
++pos;
qid = 1;
read = true;
}
int RidFileDP::getDataSet(DataList &out){
DataEntry *e;
int fsize;
if (!read)
readEntries();
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]->rank=qid;
}
else
{
e = new DataEntry;
e->rank=-1;
}
e->feature.resize(d.getfSize());
e->qid=dat[pos]->qid;
for (int j = 0; j < fsize; ++j) {
e->feature(j) = fabs(dat[i]->feature(j) -dat[pos]->feature(j));
}
out.addEntry(e);
}
++qid;
dat[pos]->rank=qid;
while (pos<dat.size() && (dat[pos]->rank!=-1 || dat[pos]->qid=="-1"))
++pos;
if (pos==d.getSize())
eof = true;
return 0;
}
int RidFileDP::getpSize() {
std::vector<string> p;
if (!read)
readEntries();
std::vector<DataEntry*> &dat = d.getData();
for (int i=0;i<dat.size();++i)
{
bool ext=false;
for (int j=0;j<p.size();++j)
if (p[j] == dat[i]->qid )
{
ext=true;
break;
}
if (!ext)
p.push_back(dat[i]->qid);
}
return p.size();
};
void RidFileDP::seed() {
gen.seed(time(NULL));
}
void RidFileDP::shuffle(vector<DataEntry*> &dat)
{
DataEntry* e;
int sz=(int)dat.size();
for (int i=0;i<sz;++i)
{
int pos = (int)(gen()%(sz-i));
cout<<pos<<endl;
e=dat[pos];
dat[pos] = dat[sz-i-1];
dat[sz-i-1] = e;
}
}
void RidFileDP::take(int n,vector<DataEntry*> &a,vector<DataEntry*> &b)
{
DataEntry *e;
if (!read)
readEntries();
vector<DataEntry*> tmp;
tmp.reserve(d.getSize());
a.clear();
b.clear();
std::vector<DataEntry*> &dat = d.getData();
for (int i=0;i<dat.size();++i)
tmp.push_back(dat[i]);
shuffle(tmp);
int pos = 0;
string qid;
for (int i=0;i<n;++i)
{
while (tmp[pos]==NULL)
++pos;
qid = tmp[pos]->qid;
a.push_back(tmp[pos]);
tmp[pos]=NULL;
for (int j = pos+1; j< tmp.size();++j)
if (tmp[j]!=NULL &&tmp[j]->qid==qid)
{
a.push_back(tmp[j]);
tmp[j]=NULL;
}
}
for (int i=0;i<tmp.size();++i)
if (tmp[i]!=NULL)
b.push_back(tmp[i]);
shuffle(a);
shuffle(b);
}
void RidFileDP::getAllDataSet(RidList &out){
DataEntry *e;
if (!read)
readEntries();
out.clear();
std::vector<DataEntry*> &dat = d.getData();
for (int i=0;i<dat.size();++i)
out.addEntry(dat[i]);
out.setfSize(d.getfSize());
}
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