ISinkNode.h

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#ifndef WIRECELL_ISINKNODE
#define WIRECELL_ISINKNODE

#include "WireCellIface/INode.h"

#include <boost/any.hpp>
#include <vector>

namespace WireCell {

    /** A node which acts as a sink.
     */
    class ISinkNodeBase : public INode
    {
    public:
        typedef std::shared_ptr<ISinkNodeBase> pointer;

        virtual ~ISinkNodeBase() ;

        virtual NodeCategory category() {
            return sinkNode;
        }

        virtual bool operator()(const boost::any& in) = 0;
    };

    template <typename InputType>
    class ISinkNode : public ISinkNodeBase
    {
    public:
        typedef InputType input_type;
        typedef std::shared_ptr<const InputType> input_pointer;

        virtual ~ISinkNode() {}

        virtual bool operator()(const boost::any& anyin) {
            const input_pointer& in = boost::any_cast<const input_pointer&>(anyin);
            return (*this)(in);
        }

        /// The calling signature:
        virtual bool operator()(const input_pointer& in) = 0;

        // Return the names of the types this node takes as input.
        virtual std::vector<std::string>  input_types() {
            return std::vector<std::string>{typeid(input_type).name()};
        }

    };
    
}

#endif