weightingFunctionContextInterface.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_WEIGHTING_EXECUTION_CONTEXT_INTERFACE_HPP_INCLUDED
#define _STRUS_WEIGHTING_EXECUTION_CONTEXT_INTERFACE_HPP_INCLUDED
#include "strus/index.hpp"
#include "strus/termStatistics.hpp"
#include <string>

namespace strus
{
class MetaDataReaderInterface;
class PostingIteratorInterface;

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

        virtual void addWeightingFeature(
                        const std::string& name_,
                        PostingIteratorInterface* postingIterator_,
                        double weight_,
                        const TermStatistics& stats_)=0;

        virtual void setVariableValue( const std::string& name, double value)=0;

        virtual double call( const Index& docno)=0;

        virtual std::string debugCall( const Index& docno)=0;
};

}//namespace
#endif