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// Copyright 2017 Yahoo Holdings. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#pragma once
#include "diskindex.h"
#include <vespa/searchlib/queryeval/blueprint.h>
namespace search::diskindex {
/**
* Blueprint implementation for term searching in a disk index.
**/
class DiskTermBlueprint : public search::queryeval::SimpleLeafBlueprint
{
private:
search::queryeval::FieldSpecBase _field;
const search::diskindex::DiskIndex & _diskIndex;
DiskIndex::LookupResult::UP _lookupRes;
bool _useBitVector;
bool _fetchPostingsDone;
bool _hasEquivParent;
search::index::PostingListHandle::UP _postingHandle;
search::BitVector::UP _bitVector;
public:
/**
* Create a new blueprint.
*
* @param field the field to search in.
* @param diskIndex the disk index used to read the bit vector or posting list.
* @param lookupRes the result after disk dictionary lookup.
* @param useBitVector whether or not we should use bit vector.
**/
DiskTermBlueprint(const search::queryeval::FieldSpecBase & field,
const search::diskindex::DiskIndex & diskIndex,
search::diskindex::DiskIndex::LookupResult::UP lookupRes,
bool useBitVector);
// Inherit doc from Blueprint.
// For now, this DiskTermBlueprint instance must have longer lifetime than the created iterator.
std::unique_ptr<queryeval::SearchIterator> createLeafSearch(const fef::TermFieldMatchDataArray & tfmda, bool strict) const override;
void fetchPostings(bool strict, const BitVector * filter) override;
};
}
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