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/CdbBase/CdbId.hh

Go to the documentation of this file.

#ifndef CDB_ID_HH
#define CDB_ID_HH

//-----------------------------------------------------------------------------
//
// File and Version Information:
//      $Id: CdbId.hh,v 1.3 2002/07/17 00:44:20 gapon Exp $
//
// Description:
//      Class CdbId. This is "extended" object identifier. It defines
//      an address of some entiry in the distributed database as:
//
//          16-bit "origin" identifier
//          16-bit "local" object's id in the scope of an origin
//
// Environment:
//      Software developed for the BaBar Detector at the SLAC B-Factory.
//
// Author List:
//      Igor A. Gaponenko               Original author
//
// Copyright Information:
//      Copyright (C) 2002              Lawrence Berkeley Laboratory
//
//-----------------------------------------------------------------------------

//-------------------------------
// Collaborating Class Headers --
//-------------------------------

#include "CdbBase/CdbCommon.hh"

//---------------
// C++ Headers --
//---------------

#include <iostream.h>

/// Object of this class represent "extended" identifier for Condition/DB objects
/**
  * More info...
  */
class CdbId {

public:

  /// Normal & also default constructor
  /**
    */
    CdbId( unsigned short theOriginId = 0,
           unsigned short theLocalId  = 0 ) :
        origin(theOriginId),
        local(theLocalId)
    { }

  /// Copy constructor
  /**
    */
    CdbId( const CdbId& theId )
    {
        origin = theId.origin;
        local  = theId.local;
    }

  /// The destructor
  /**
    * NOTE: The destructor is NOT virtual because this is an embedded
    *       class.
    */
    ~CdbId( ) { }

  /// The assignment operator
  /**
    */
    CdbId& operator=( const CdbId& theId )
    {
        if( this != &theId ) {
            origin = theId.origin;
            local  = theId.local;
        }
        return *this;
    }

  /// The "equal" operator
  /**
    * This operator is required to insert objects of this class
    * into a B-tree.
    */
    bool operator==( const CdbId& theId ) const
    {
        return ( origin == theId.origin ) && ( local == theId.local );
    }

  /// The "not-equal" operator
  /**
    */
    bool operator!=( const CdbId& theId ) const
    {
        return ! operator==( theId );
    }

  /// The "less" operator
  /**
    * This operator is required to insert objects of this class
    * into a B-tree.
    */
    bool operator<( const CdbId& theId ) const
    {
        return ( origin < theId.origin ) || (( origin == theId.origin ) && ( local < theId.local ));
    }

public:

    unsigned short origin;  // The identifier of an "origin"
    unsigned short local;   // The local identifier of an object in the scope of an origin
};

inline
ostream&
operator<<( ostream&     o,
            const CdbId& theId )
{
    o << theId.origin << "::" << theId.local;
    return o;
}

#endif  // CDB_ID_HH

 

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Page Owner: Jacek Becla
Last Update: October 04, 2002