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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 "groupengine.h"
#include <vespa/searchlib/aggregation/grouping.h>
namespace search::grouping {
class GroupingEngine
{
public:
using GroupEngines = std::vector<GroupEngine *>;
public:
GroupingEngine(const GroupingEngine &) = delete;
GroupingEngine & operator = (const GroupingEngine &) = delete;
GroupingEngine(aggregation::Grouping & request);
GroupingEngine(vespalib::nbostream & request, bool oldWay);
~GroupingEngine();
vespalib::nbostream & serializeOldWay(vespalib::nbostream & request) const;
vespalib::nbostream & serialize(vespalib::nbostream & request) const;
void aggregate(const RankedHit * rankedHit, unsigned int len);
void merge(const GroupingEngine & b);
aggregation::Group::UP createResult() const;
const GroupEngines & getEngines() const { return _levels; }
private:
void fillRootRequest(const aggregation::Group & r);
void preFillEngines(const aggregation::Group & r, size_t levels);
aggregation::Grouping & _request;
GroupEngines _levels;
aggregation::GroupingLevel _rootRequestLevel;
};
}
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