metaDataReaderInterface.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_METADATA_READER_INTERFACE_HPP_INCLUDED
#define _STRUS_METADATA_READER_INTERFACE_HPP_INCLUDED
#include "strus/index.hpp"
#include "strus/numericVariant.hpp"
#include <string>
#include <vector>

namespace strus
{

class MetaDataRestrictionInterface;

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

        virtual Index elementHandle( const std::string& name_) const=0;

        virtual Index nofElements() const=0;

        virtual void skipDoc( const Index& docno)=0;

        virtual NumericVariant getValue( const Index& elementHandle_) const=0;

        virtual const char* getType( const Index& elementHandle_) const=0;

        virtual const char* getName( const Index& elementHandle_) const=0;

        virtual std::vector<std::string> getNames() const=0;
};
}//namespace
#endif