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/BdbDistribution/BdbSimpleDbIdMgr.cc

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// -*- C++ -*-
//
// Package:     
// Module:      BdbSimpleDbIdMgr
// 
// Description: 
//
// Implementation:
//     <Notes on implementation>
//
// Author:      Simon Patton
// Created:     Fri Mar 20 14:33:50 PST 1998
// $Id: BdbSimpleDbIdMgr.cc,v 1.6 1999/10/24 18:53:21 patton Exp $
//

#include "BaBar/BaBar.hh"

// class include file
#include "BdbDistribution/BdbSimpleDbIdMgr.hh"

// system include files
#include <stdlib.h>

// user include files
#include "BdbDistribution/BdbFdName.hh"

//
// constants, enums and typedefs
//

//
// static data member definitions
//

//
// constructors and destructor
//

BdbSimpleDbIdMgr::BdbSimpleDbIdMgr( const BdbHandle( BdbFdName ) aFdName ,
                                    const char* aLabel )
   : BdbDbIdManager( aLabel )
{
   const unsigned long kReservedDbIds( 4096 ) ;
   const unsigned long kSetLength( 2048 ) ;
   if ( (*aFdName) == "BaBar" ) {
      m_beginDbId = 16384 ;
      m_endDbId = 65536 ;
   }
   else {
      unsigned long setNumber ;
      if ( (*aFdName) == "Gromit" ) {
         setNumber = 0 ;
      }
      else {
         if ( (*aFdName) == "Wallace" ) {
            setNumber = 1 ;
         }
         else {
            setNumber = 2 ;
         }
      }
      m_beginDbId = setNumber * kSetLength + kReservedDbIds ;
      m_endDbId = ( setNumber + 1 ) * kSetLength + kReservedDbIds ;
   }
   m_nextAvailableDbId = m_beginDbId ;
}

// BdbSimpleDbIdMgr::BdbSimpleDbIdMgr()
// {
// }

// BdbSimpleDbIdMgr::BdbSimpleDbIdMgr( const BdbSimpleDbIdMgr& )
// {
// }

BdbSimpleDbIdMgr::~BdbSimpleDbIdMgr()
{
}

//
// assignment operators
//

// const BdbSimpleDbIdMgr& BdbSimpleDbIdMgr::operator=( const BdbSimpleDbIdMgr& )
// {
// }

//
// member functions
//

BdbDbId
BdbSimpleDbIdMgr::issueNextDbId()
{
   if ( ( federation().isNull() ) ||
        ( m_nextAvailableDbId == m_endDbId ) ) {
      return ( 0 ) ;
   }
   ooThis().update() ;
   return ( m_nextAvailableDbId++ ) ;
}

d_Boolean
BdbSimpleDbIdMgr::issueDbId( const BdbDbId aDbId )
{
   if ( ( federation().isNull() ) ||
        ( m_nextAvailableDbId == m_endDbId ) ||
        ( aDbId != m_nextAvailableDbId ) ) {
      return ( false ) ;
   }

   issueNextDbId() ;
   return( !false ) ;
}

d_Boolean
BdbSimpleDbIdMgr::recoverDbId( const BdbDbId aDbId )
{
   if ( ( federation().isNull() ) ||
        ( m_nextAvailableDbId == m_beginDbId ) ||
        ( ( aDbId + 1 ) != m_nextAvailableDbId ) ) {
      return ( false ) ;
   }

   ooThis().update() ;
   --m_nextAvailableDbId ;

   return( !false ) ;
}

d_Boolean
BdbSimpleDbIdMgr::refresh()
{
   return( true ) ;
}

//
// const member functions
//

d_Boolean
BdbSimpleDbIdMgr::allowedWriteAccess( const BdbDbId aDbId ) const
{
   return ( ( aDbId >= m_beginDbId ) &&
            ( aDbId < m_endDbId ) ) ;
}

d_Boolean
BdbSimpleDbIdMgr::hasBeenIssued( const BdbDbId aDbId ) const
{
   return( ( aDbId >= m_beginDbId ) &&
           ( aDbId < m_nextAvailableDbId ) ) ;
}

d_Boolean
BdbSimpleDbIdMgr::noMoreDbIds() const
{
   return ( m_nextAvailableDbId == m_endDbId ) ;
}

BdbDbId
BdbSimpleDbIdMgr::multiWriteDbId( const char* const aName ) const
{
   return( 0 ) ;
}

//
// static member functions
//

void
BdbSimpleDbIdMgr::linkInClass()
{
}

 

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