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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 <vespa/searchlib/fef/blueprint.h>
#include <vespa/eval/eval/value_type.h>
namespace search::features {
/**
* Implements the blueprint for the attribute executor.
*
* An executor of this outputs number(s) if used with regular attributes
* or a tensor value if used with tensor attributes.
*/
class AttributeBlueprint : public fef::Blueprint {
private:
vespalib::string _attrName; // the name of the attribute vector
vespalib::string _attrKey; // Used for looking up the attribute in the ObjectStore.
vespalib::string _extra; // the index or key
vespalib::eval::ValueType _tensorType;
uint8_t _numOutputs;
public:
AttributeBlueprint();
~AttributeBlueprint() override;
void visitDumpFeatures(const fef::IIndexEnvironment & env, fef::IDumpFeatureVisitor & visitor) const override;
fef::Blueprint::UP createInstance() const override;
void prepareSharedState(const fef::IQueryEnvironment & queryEnv, fef::IObjectStore & objectStore) const override;
fef::FeatureExecutor &createExecutor(const fef::IQueryEnvironment &env, vespalib::Stash &stash) const override;
fef::ParameterDescriptions getDescriptions() const override;
bool setup(const fef::IIndexEnvironment & env, const fef::ParameterList & params) override;
};
}
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