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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/searchcommon/attribute/attributecontent.h>
namespace search::features {
/**
* Implements the executor for the documentage feature outputting the
* difference between document time (stored in an attribute) and current
* system time
**/
class AgeExecutor : public fef::FeatureExecutor {
private:
const attribute::IAttributeVector *_attribute;
attribute::IntegerContent _buf;
public:
AgeExecutor(const attribute::IAttributeVector *attribute);
void execute(uint32_t docId) override;
};
/**
* Implements the blueprint for 'documentage' feature. It uses the 'now' feature
* to get current time and reads document time from a specified attribute
*/
class AgeBlueprint : public fef::Blueprint {
private:
vespalib::string _attribute;
public:
AgeBlueprint() : fef::Blueprint("age") { }
~AgeBlueprint();
void visitDumpFeatures(const fef::IIndexEnvironment &env, fef::IDumpFeatureVisitor &) const override;
fef::Blueprint::UP createInstance() 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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