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/BdbScribes/BdbPersPushPullUtility.cc

Go to the documentation of this file.

#if !defined(BDBPERSPUSHPULLUTILITY_CC)
#define BDBPERSPUSHPULLUTILITY_CC
//--------------------------------------------------------------------------
// File and Version Information:
//      $Id: BdbPersPushPullUtility.cc,v 1.4 2002/06/21 19:42:44 ryd Exp $
//
// Description:
//      Class BdbPersPushPullUtility
//        provide type independent implementations of PushPull functions.
//
// Environment:
//      Software developed for the BaBar Detector at the SLAC B-Factory.
//
// Author List:
//      Simon Patton            Originator
//
// Copyright Information:
//      Copyright (C) 1999      LBNL
//
//------------------------------------------------------------------------

//-----------------------
// This Class's Header --
//-----------------------
#include "BdbScribes/BdbPersPushPullUtility.hh"

//-------------
// C Headers --
//-------------
extern "C" {
}

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

//----------------
// BaBar Header --
//----------------
#include "BaBar/BaBar.hh"

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

#include "BdbEvent/BdbEventT.hh"
#include "BdbTrees/BdbTreeHdrT.hh"
#include "BdbTrees/BdbTreeHdr.hh"
#include "BdbClustering/BdbAbsPlacementManager.hh"
#include "BdbUtil/BdbAbstractClusteringHint.hh"
#include "ErrLogger/ErrLog.hh"

//------------------------------------
// Collaborating Class Declarations --
//------------------------------------
#include "BdbEvent/BdbEvent_ref.hh"

//-----------------------------------------------------------------------
// Local Macros, Typedefs, Structures, Unions and Forward Declarations --
//-----------------------------------------------------------------------

//              -----------------------------------------------
//              -- Static Data & Function Member Definitions --
//              -----------------------------------------------

BdbTreeHdrT
BdbPersPushPullUtility::findHeader( const BdbEventT& aEvent ,
                                    const char* aName )
{
   return( aEvent.findHeader( (const char*)aName ) ) ;
}

BdbTreeHdrT
BdbPersPushPullUtility::getHeader( BdbEventT& aEvent ,
                                   const char* aName ,
                                   const BdbAbsPlacementManager& aPlacementManager )
{
   // Find the Header if it exists.
   BdbTreeHdrT existingHeader( findHeader( aEvent ,
                                           aName ) ) ;

   // If header exists then finish.
   if( ! existingHeader.isNull( ) ) {

      // If header is borrowed, then abort
      // (dont in two step to keep OSF happy).
      if ( ! aEvent.ownsHeader( existingHeader ) ) {
         ErrMsg( fatal ) << "Event is only borrowing \""
                         << aName
                         << "\" header"
                         << ", can not write new data into it!"
                         << endmsg ;
         ::abort() ;
      }
      return( existingHeader ) ;
   }

   // Otherwise create header
   BdbAbstractClusteringHint* hint( aPlacementManager.getHeaderHint( aName ) ) ;

   // If the header's hint can not be found then the header name is
   //   not valid.
   if( 0 == hint ) {
      ErrMsg( fatal ) << "BdbPersPushPullUtility: Request for invalid header ("
                      << aName
                      << ")"
                      << endmsg ;
      ::abort();
   }

   // Get the persistent event to create the necessary header.
   BdbRefAny place( hint->hint() ) ;
   BdbTreeHdrT createdHeader( aEvent.createHeader( place ,
                                                   aName ) ) ;

   // If header now exists then finish.
   if( ! createdHeader.isNull() ) {
      return( createdHeader ) ;
   }
      
   // If the header is not successfully created the is an error.
   ErrMsg( fatal ) << "BdbPersPushPullUtility: Unable to create a new header ("
                   << aName
                   << ") in persistent event"
                   << endmsg ;
   ::abort() ;
   return( createdHeader ) ;
}


//              ---------------------------------
//              -- Member Function Definitions --
//              ---------------------------------

//----------------
// Constructors --
//----------------

// BdbPersPushPullUtility::BdbPersPushPullUtility( const BdbPersPushPullUtility& aRhs )
// {
// }

//--------------
// Destructor --
//--------------

//-------------
// Operators --
//-------------
    
// const BdbPersPushPullUtility& BdbPersPushPullUtility::operator=( const BdbPersPushPullUtility& aRhs )
// {
// }

//-------------
// Selectors --
//-------------

//-------------
// Modifiers --
//-------------

#endif // BDBPERSPUSHPULLUTILITY_CC

 

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