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// Copyright 2016 Yahoo Inc. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#include "postinglistsearchcontext.h"
#include "postinglistsearchcontext.hpp"
#include "attributeiterators.hpp"
#include "diversity.hpp"
#include <vespa/searchlib/btree/btreeiterator.hpp>
namespace search {
namespace attribute {
using btree::BTreeNode;
PostingListSearchContext::
PostingListSearchContext(const Dictionary &dictionary,
uint32_t docIdLimit,
uint64_t numValues,
bool hasWeight,
const EnumStoreBase &esb,
uint32_t minBvDocFreq,
bool useBitVector)
: _frozenDictionary(dictionary.getFrozenView()),
_lowerDictItr(BTreeNode::Ref(), dictionary.getAllocator()),
_upperDictItr(BTreeNode::Ref(), dictionary.getAllocator()),
_uniqueValues(0u),
_docIdLimit(docIdLimit),
_dictSize(_frozenDictionary.size()),
_numValues(numValues),
_hasWeight(hasWeight),
_useBitVector(useBitVector),
_pidx(),
_frozenRoot(),
_FSTC(0.0),
_PLSTC(0.0),
_esb(esb),
_minBvDocFreq(minBvDocFreq),
_gbv(nullptr)
{
}
PostingListSearchContext::~PostingListSearchContext()
{
}
void
PostingListSearchContext::lookupTerm(const EnumStoreComparator &comp)
{
_lowerDictItr.lower_bound(_frozenDictionary.getRoot(), EnumIndex(), comp);
_upperDictItr = _lowerDictItr;
if (_upperDictItr.valid() && !comp(EnumIndex(), _upperDictItr.getKey())) {
++_upperDictItr;
_uniqueValues = 1u;
}
}
void
PostingListSearchContext::lookupRange(const EnumStoreComparator &low,
const EnumStoreComparator &high)
{
_lowerDictItr.lower_bound(_frozenDictionary.getRoot(), EnumIndex(), low);
_upperDictItr = _lowerDictItr;
if (_upperDictItr.valid() && !high(EnumIndex(), _upperDictItr.getKey())) {
_upperDictItr.seekPast(EnumIndex(), high);
}
_uniqueValues = _upperDictItr - _lowerDictItr;
}
void
PostingListSearchContext::lookupSingle()
{
if (_lowerDictItr.valid()) {
_pidx = _lowerDictItr.getData();
}
}
template class PostingListSearchContextT<btree::BTreeNoLeafData>;
template class PostingListSearchContextT<int32_t>;
template class PostingListFoldedSearchContextT<btree::BTreeNoLeafData>;
template class PostingListFoldedSearchContextT<int32_t>;
} // namespace attribute
} // namespace search
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