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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#include "simpleresult.h"
#include <cassert>
#include <ostream>
namespace search::queryeval {
SimpleResult &
SimpleResult::addHit(uint32_t docid)
{
_hits.push_back(docid);
return *this;
}
void
SimpleResult::clear()
{
std::vector<uint32_t> tmp;
tmp.swap(_hits);
}
SimpleResult &
SimpleResult::search(SearchIterator &sb)
{
clear();
// assume strict toplevel search object located at start
sb.initFullRange();
for (sb.seek(1); !sb.isAtEnd(); sb.seek(sb.getDocId() + 1)) {
sb.unpack(sb.getDocId());
_hits.push_back(sb.getDocId());
}
return *this;
}
SimpleResult &
SimpleResult::searchStrict(SearchIterator &sb, uint32_t docIdLimit)
{
clear();
// assume strict toplevel search object located at start
sb.initRange(1, docIdLimit);
for (sb.seek(1); !sb.isAtEnd(); sb.seek(sb.getDocId() + 1)) {
sb.unpack(sb.getDocId());
_hits.push_back(sb.getDocId());
}
return *this;
}
SimpleResult &
SimpleResult::search(SearchIterator &sb, uint32_t docIdLimit)
{
clear();
// assume non-strict toplevel search object
sb.initRange(1, docIdLimit);
for (uint32_t docId = 1; !sb.isAtEnd(docId); ++docId) {
if (sb.seek(docId)) {
assert(docId == sb.getDocId());
sb.unpack(docId);
_hits.push_back(docId);
}
}
return *this;
}
bool
SimpleResult::contains(const SimpleResult& subset) const
{
auto hits_itr = _hits.begin();
for (uint32_t i = 0; i < subset.getHitCount(); ++i) {
uint32_t subset_hit = subset.getHit(i);
while (hits_itr != _hits.end() && *hits_itr < subset_hit) {
++hits_itr;
}
if (hits_itr == _hits.end() || *hits_itr > subset_hit) {
return false;
}
}
return true;
}
std::ostream &
operator << (std::ostream &out, const SimpleResult &result)
{
if (result.getHitCount() == 0) {
out << std::endl << "empty" << std::endl;
} else {
out << std::endl;
for (uint32_t i = 0; i < result.getHitCount(); ++i) {
out << "{" << result.getHit(i) << "}" << std::endl;
}
}
return out;
}
}
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