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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 "tensor_factory_blueprint.h"
namespace search::features {
/**
* Blueprint for a rank feature that creates a tensor from an array
* where the elements in the array are used as labels in the tensor addresses.
* The tensor cells all get the value 1.0.
*
* The array source can be either an attribute vector or query parameter.
*/
class TensorFromLabelsBlueprint : public TensorFactoryBlueprint
{
public:
TensorFromLabelsBlueprint();
fef::Blueprint::UP createInstance() const override {
return Blueprint::UP(new TensorFromLabelsBlueprint());
}
fef::ParameterDescriptions getDescriptions() const override {
return fef::ParameterDescriptions().
desc().string().
desc().string().string();
}
bool setup(const fef::IIndexEnvironment &env, const fef::ParameterList ¶ms) override;
fef::FeatureExecutor &createExecutor(const fef::IQueryEnvironment &env, vespalib::Stash &stash) const override;
};
}
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