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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 "blueprint.h"
#include <vespa/searchlib/fef/matchdatalayout.h>
#include <vector>
namespace search::fef { class TermFieldMatchData; }
namespace search::queryeval {
class WeightedSetTermBlueprint : public ComplexLeafBlueprint
{
fef::MatchDataLayout _layout;
FieldSpec _children_field;
std::vector<int32_t> _weights;
std::vector<Blueprint::UP> _terms;
public:
explicit WeightedSetTermBlueprint(const FieldSpec &field);
WeightedSetTermBlueprint(const WeightedSetTermBlueprint &) = delete;
WeightedSetTermBlueprint &operator=(const WeightedSetTermBlueprint &) = delete;
~WeightedSetTermBlueprint() override;
// used by create visitor
// matches signature in dot product blueprint for common blueprint
// building code. Hands out the same field spec to all children.
FieldSpecBase getNextChildField(FieldSpecBase) { return _children_field; }
// used by create visitor
void reserve(size_t num_children);
void addTerm(Blueprint::UP term, int32_t weight, HitEstimate & estimate);
void complete(HitEstimate estimate) {
setEstimate(estimate);
}
void sort(InFlow in_flow) override;
FlowStats calculate_flow_stats(uint32_t docid_limit) const override;
SearchIteratorUP createLeafSearch(const fef::TermFieldMatchDataArray &tfmda) const override;
SearchIteratorUP createFilterSearch(FilterConstraint constraint) const override;
std::unique_ptr<MatchingElementsSearch> create_matching_elements_search(const MatchingElementsFields &fields) const override;
void visitMembers(vespalib::ObjectVisitor &visitor) const override;
private:
void fetchPostings(const ExecuteInfo &execInfo) override;
};
}
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