Factory.h

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#ifndef WIRECELL_PGRAPH_FACTORY
#define WIRECELL_PGRAPH_FACTORY


#include "WireCellPgraph/Node.h"
#include "WireCellUtil/Logging.h"
#include "WireCellIface/INode.h"

namespace WireCell {
    namespace Pgraph { 

        // Makers make an appropriate Pgraph::Node from an INode
        struct Maker {
            virtual ~Maker() {}
            virtual Node* operator()(INode::pointer wcnode) = 0;
        };
        template<class Wrapper>
        struct MakerT : public Maker {
            virtual ~MakerT() {}
            virtual Node* operator()(INode::pointer wcnode) {
                return new Wrapper(wcnode);
            }
        };

        // This factory creates Pgraph::Nodes*'s from INode::pointers.
        // It only knows about the categories that have been hard
        // coded in the Factory constructor.
        class Factory {
        public:

            Factory();

            typedef std::map<INode::pointer, Node*> WCNodeWrapperMap;

            template<class Wrapper>
            void bind_maker(INode::NodeCategory cat) {
                m_factory[cat] = new MakerT<Wrapper>;
            }

            Node* operator()(WireCell::INode::pointer wcnode);


        private:
            typedef std::map<INode::NodeCategory, Maker*> NodeMakers;
            NodeMakers m_factory;
            WCNodeWrapperMap m_nodes;
            Log::logptr_t l;
        };

    }
}
#endif