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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 "attributeguard.h"
#include <vespa/searchlib/queryeval/blueprint.h>
#include <vespa/searchlib/queryeval/searchiterator.h>
#include <vespa/searchcommon/attribute/hit_estimate.h>
#include <vector>
namespace search {
namespace attribute { class ISearchContext; }
class AttributeWeightedSetBlueprint : public queryeval::ComplexLeafBlueprint
{
private:
using ISearchContext = attribute::ISearchContext;
using IAttributeVector = attribute::IAttributeVector;
using AttrHitEstimate = attribute::HitEstimate;
size_t _numDocs;
size_t _estHits;
std::vector<int32_t> _weights;
const IAttributeVector & _attr;
std::vector<ISearchContext*> _contexts;
std::vector<AttrHitEstimate> _estimates;
public:
AttributeWeightedSetBlueprint(const AttributeWeightedSetBlueprint &) = delete;
AttributeWeightedSetBlueprint &operator=(const AttributeWeightedSetBlueprint &) = delete;
AttributeWeightedSetBlueprint(const queryeval::FieldSpec &field, const IAttributeVector & attr);
~AttributeWeightedSetBlueprint();
void addToken(std::unique_ptr<ISearchContext> context, int32_t weight);
void sort(queryeval::InFlow in_flow, const Options &opts) override;
queryeval::FlowStats calculate_flow_stats(uint32_t docid_limit) const override;
queryeval::SearchIterator::UP createLeafSearch(const fef::TermFieldMatchDataArray &tfmda) const override;
queryeval::SearchIterator::UP createFilterSearch(FilterConstraint constraint) const override;
void fetchPostings(const queryeval::ExecuteInfo &execInfo) override;
void visitMembers(vespalib::ObjectVisitor &visitor) const override;
};
} // namespace search
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