aggregatorFunctionInstanceInterface.hpp

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/*
 * Copyright (c) 2014 Patrick P. Frey
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
 */
#ifndef _STRUS_ANALYZER_AGGREGATOR_FUNCTION_INSTANCE_INTERFACE_HPP_INCLUDED
#define _STRUS_ANALYZER_AGGREGATOR_FUNCTION_INSTANCE_INTERFACE_HPP_INCLUDED
#include "strus/analyzer/document.hpp"
#include "strus/analyzer/functionView.hpp"
#include "strus/numericVariant.hpp"

namespace strus
{

class AggregatorFunctionInstanceInterface
{
public:
        virtual ~AggregatorFunctionInstanceInterface(){}

        virtual NumericVariant evaluate( const analyzer::Document& document) const=0;

        virtual analyzer::FunctionView view() const=0;
};

}//namespace
#endif