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// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#pragma once
#include "hit_iterator.h"
#include "queryterm.h"
namespace search::streaming {
/*
* Iterator pack used over hit list for a term to support near, onear,
* phrase and same element query nodes.
*/
class HitIteratorPack
{
using iterator = typename std::vector<HitIterator>::iterator;
using FieldElement = HitIterator::FieldElement;
std::vector<HitIterator> _iterators;
FieldElement _field_element;
public:
explicit HitIteratorPack(const QueryNodeList& children);
explicit HitIteratorPack(const std::vector<std::unique_ptr<QueryTerm>>& children);
~HitIteratorPack();
FieldElement& get_field_element_ref() noexcept { return _field_element; }
HitIterator& front() noexcept { return _iterators.front(); }
iterator begin() noexcept { return _iterators.begin(); }
iterator end() noexcept { return _iterators.end(); }
bool all_valid() const noexcept;
bool seek_to_matching_field_element() noexcept;
};
}
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