weightingFunctionInstanceInterface.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_FUNCTION_INSTANCE_INTERFACE_HPP_INCLUDED
#define _STRUS_WEIGHTING_FUNCTION_INSTANCE_INTERFACE_HPP_INCLUDED
#include "strus/globalStatistics.hpp"
#include <string>

namespace strus
{
class WeightingFunctionContextInterface;
class NumericVariant;
class StorageClientInterface;
class MetaDataReaderInterface;
class PostingIteratorInterface;

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

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

        virtual void addNumericParameter( const std::string& name, const NumericVariant& value)=0;

        virtual WeightingFunctionContextInterface* createFunctionContext(
                        const StorageClientInterface* storage_,
                        MetaDataReaderInterface* metadata_,
                        const GlobalStatistics& stats) const=0;

        virtual std::vector<std::string> getVariables() const=0;

        virtual std::string tostring() const=0;
};

}//namespace
#endif