GraphTransformation.h

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/*
 * This file is part of KnowRob, please consult
 * https://github.com/knowrob/knowrob for license details.
 */
 
#ifndef KNOWROB_GRAPH_TRANSFORMATION_H
#define KNOWROB_GRAPH_TRANSFORMATION_H
 
#include <functional>
#include <boost/property_tree/ptree.hpp>
#include "knowrob/semweb/TripleContainer.h"
#include "knowrob/semweb/OntologySource.h"
 
namespace knowrob {
    class GraphTransformation {
    public:
        GraphTransformation() = default;
 
        virtual ~GraphTransformation() = default;
 
        void setOrigin(std::string_view origin) { origin_ = origin; }
 
        auto origin() const { return origin_; }
 
        void apply(OntologySource &ontologySource, const TripleHandler &callback);
 
        virtual bool configure(const boost::property_tree::ptree &config) = 0;
 
        static std::shared_ptr<GraphTransformation> create(const boost::property_tree::ptree &config);
 
    protected:
        TripleHandler next_;
        std::shared_ptr<GraphTransformation> nextTransformation_;
        std::string origin_;
 
        void initializeNext();
 
        void finalizeNext();
 
        void setNext(const std::shared_ptr<GraphTransformation> &next) { nextTransformation_ = next; }
 
        void setNext(const TripleHandler &next) { next_ = next; }
 
        void pushOutputTriples(const TripleContainerPtr &triples);
 
        virtual void pushInputTriples(const TripleContainerPtr &triples) = 0;
 
        virtual void initializeTransformation() = 0;
 
        virtual void finalizeTransformation() = 0;
    };
 
} // knowrob
 
#endif //KNOWROB_GRAPH_TRANSFORMATION_H