searchlib/src/vespa/searchlib/queryeval/dot_product_blueprint.h


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// Copyright Yahoo. 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>

namespace search::fef { class TermFieldMatchData; }

namespace search::queryeval {

class DotProductBlueprint : public ComplexLeafBlueprint
{
    HitEstimate                _estimate;
    fef::MatchDataLayout       _layout;
    std::vector<int32_t>       _weights;
    std::vector<Blueprint::UP> _terms;

public:
    explicit DotProductBlueprint(const FieldSpec &field);
    DotProductBlueprint(const DotProductBlueprint &) = delete;
    DotProductBlueprint &operator=(const DotProductBlueprint &) = delete;
    ~DotProductBlueprint() override;

    // used by create visitor
    FieldSpec getNextChildField(const FieldSpec &outer);

    // used by create visitor
    void addTerm(Blueprint::UP term, int32_t weight);

    SearchIteratorUP createLeafSearch(const search::fef::TermFieldMatchDataArray &tfmda, bool strict) const override;
    SearchIteratorUP createFilterSearch(bool strict, FilterConstraint constraint) const override;

    void visitMembers(vespalib::ObjectVisitor &visitor) const override;
    void fetchPostings(const ExecuteInfo &execInfo) override;
};

}