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DbBase.h

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//====================================================================
//      DbCnv Base class definitions
//--------------------------------------------------------------------
//
//      Package    : DbCnv ( The LHCb Offline System)
//      Author     : M.Frank
//====================================================================
#ifndef DBCNV_DBBASE_H
#define DBCNV_DBBASE_H 1

// Framework include files
#include "GaudiDb/DbOOMs.h"

#include <cstdio>
template <class T> class dbHandleBase    {
protected:
  typedef  T             _DataType;
  mutable  _DataType*    m_ptr;
  mutable  unsigned char m_type;
  dbHandleBase() : m_ptr(0), m_type(0)      {
  }
  virtual ~dbHandleBase()     {
    if ( m_type == 0 || m_type > 15 )    {
      printf("Unknown storage TYPE!!!!\n");
    }
  }
  void setType(unsigned char type)   const  {
    m_type = type;
  }
public:
  _DataType* operator->()             {    
    return const_cast<_DataType*>(m_ptr);
  }
  const _DataType* operator->() const {    
    return m_ptr;
  }
  _DataType* ptr()             {    
    return const_cast<_DataType*>(m_ptr);
  }
  const _DataType* ptr() const {    
    return m_ptr;
  }
  operator bool()   const             {    
    return isValid();
  }
  bool operator!()  const             {    
    return !isValid();
  }
  bool isValid()  const               {    
    return 0 != m_ptr;
  }
  bool is_null()    const             {
    return isValid() ? false : true;
  }
  unsigned char type()   const   {
    return m_type;
  }
};

#endif  // DBCNV_DBBASE_H

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