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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 "multi_term.h"
namespace search::streaming {
/**
N-ary "EQUIV" operator that merges terms from nodes below.
*/
class EquivQueryNode : public MultiTerm
{
public:
EquivQueryNode(std::unique_ptr<QueryNodeResultBase> result_base, uint32_t num_terms);
~EquivQueryNode() override;
bool evaluate() const override;
const HitList & evaluateHits(HitList & hl) const override;
void unpack_match_data(uint32_t docid, const fef::ITermData& td, fef::MatchData& match_data, const fef::IIndexEnvironment& index_env) override;
EquivQueryNode* as_equiv_query_node() noexcept override;
const EquivQueryNode* as_equiv_query_node() const noexcept override;
std::vector<std::unique_ptr<QueryTerm>> steal_terms();
};
}
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