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DbColumn.h

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

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

// STL include files
#include <string>
#include <vector>

class DbColumn    {
public:
  enum Options {PRIMARY_KEY = 1 << 0, 
                NOT_NULL    = 1 << 1,
                UNIQUE      = 1 << 2,
                CLUSTERED   = 1 << 3,
                NONCLUSTERED= 1 << 4
  };
  typedef std::vector<DbColumn*> Container;
  typedef Container::iterator iterator;
  typedef Container::const_iterator const_iterator;
protected:
  std::string         m_name;
  std::string         m_typeName;
  const std::type_info&    m_type;
  unsigned long       m_opt;
  long                m_offset;
  long                m_typeID;
  mutable char*       m_address;
protected:
  DbColumn* i_check(bool flag = true);

public:
  DbColumn(const std::string& nam, long offset, const long typ, unsigned long opt=0);
  DbColumn(const std::string& nam, long offset, const std::type_info& typ, unsigned long opt=0);
  virtual ~DbColumn();
  bool isValid()    const   {
    return typeName() != "";
  }
  const std::string& name() const   {
    return m_name;
  }
  const std::string& typeName() const   {
    return m_typeName;
  }
  const std::type_info&  type()  const   {
    return m_type;
  }
  unsigned long options()   const   {
    return m_opt;
  }
  long  typeID()    const   {
    return m_typeID;
  }
  long offset()    const   {
    return m_offset;
  }
  void setOffset(unsigned long off)   {
    m_offset = off;
  }
  void setAddress(char* address)  const  {
    m_address = address;
  }
  const char* address()   const   {
    return m_address;
  }
  char* address()      {
    return m_address;
  }
  char* data()   const {
    return m_address+m_offset;
  }
  char* data(char* ptr)  const  {
    return ptr+m_offset;
  }
};
#endif  // DBCNV_DBCOLUMN_H

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