DataHandleConfigurable.h

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#ifndef GAUDIKERNEL_DATAHANDLECONFIGURABLE_H
#define GAUDIKERNEL_DATAHANDLECONFIGURABLE_H 1

#include <functional>
#include <string>

#include "GaudiKernel/DataObjID.h"
#include "GaudiKernel/IDataHandleMetadata.h"

namespace Gaudi
{
  class DataHandleConfigurable
  {
  public:
    DataHandleConfigurable( const IDataHandleMetadata& metadata, DataObjID defaultKey )
        : m_metadata( metadata ), m_key( std::move( defaultKey ) )
    {
    }

    const IDataHandleMetadata& metadata() const { return m_metadata; }

    const DataObjID& targetKey() const { return m_key; }

    void setTargetKey( const DataObjID& key ) { m_key = key; }

    friend std::ostream& operator<<( std::ostream& str, const DataHandleConfigurable& d );

  private:
    std::reference_wrapper<const IDataHandleMetadata> m_metadata;
    DataObjID                                         m_key;
  };

  // More boilerplate for Gaudi::Property compatibility
  namespace Parsers
  {
    GAUDI_API StatusCode parse( Gaudi::DataHandleConfigurable&, const std::string& );
  }
  namespace Utils
  {
    GAUDI_API std::ostream& toStream( const Gaudi::DataHandleConfigurable&, std::ostream& );
  }
}

#endif