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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 <vespa/searchlib/fef/blueprint.h>
#include <vespa/searchcommon/attribute/attributecontent.h>
namespace search::features {
/** Convenience typedef. */
using GeoLocationSpecPtrs = std::vector<const search::common::GeoLocationSpec *>;
/**
* Implements the executor for the distance feature.
*/
class DistanceExecutor : public fef::FeatureExecutor {
private:
GeoLocationSpecPtrs _locations;
const attribute::IAttributeVector * _pos;
attribute::IntegerContent _intBuf;
feature_t _best_index;
feature_t _best_x;
feature_t _best_y;
feature_t calculateDistance(uint32_t docId);
feature_t calculate2DZDistance(uint32_t docId);
public:
/**
* Constructs an executor for the distance feature.
*
* @param locations location objects associated with the query environment.
* @param pos the attribute to use for positions (expects zcurve encoding).
*/
DistanceExecutor(GeoLocationSpecPtrs locations,
const attribute::IAttributeVector * pos);
void execute(uint32_t docId) override;
static const feature_t DEFAULT_DISTANCE;
};
/**
* Implements the blueprint for the distance executor.
*/
class DistanceBlueprint : public fef::Blueprint {
private:
vespalib::string _field_name;
vespalib::string _arg_string;
uint32_t _attr_id;
bool _use_geo_pos;
bool _use_nns_tensor;
bool _use_item_label;
bool setup_geopos(const vespalib::string &attr);
bool setup_nns(const vespalib::string &attr);
public:
DistanceBlueprint();
~DistanceBlueprint();
void visitDumpFeatures(const fef::IIndexEnvironment & env, fef::IDumpFeatureVisitor & visitor) const override;
fef::Blueprint::UP createInstance() const override;
fef::ParameterDescriptions getDescriptions() const override {
return fef::ParameterDescriptions().desc().string().desc().string().string();
}
bool setup(const fef::IIndexEnvironment & env, const fef::ParameterList & params) override;
void prepareSharedState(const fef::IQueryEnvironment& env, fef::IObjectStore& store) const override;
fef::FeatureExecutor &createExecutor(const fef::IQueryEnvironment &env, vespalib::Stash &stash) const override;
};
}
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