DbiConnectionMaintainer.cxx

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// $Id: DbiConnectionMaintainer.cxx,v 1.1 2005/06/06 16:55:31 west Exp $


#include "DatabaseInterface/DbiCascader.h"
#include "DatabaseInterface/DbiConnectionMaintainer.h"
#include "LeakChecker/Lea.h"
#include "MessageService/MsgService.h"

ClassImp(DbiConnectionMaintainer)

//   Definition of static data members
//   *********************************

CVSID("$Id: DbiConnectionMaintainer.cxx,v 1.1 2005/06/06 16:55:31 west Exp $");


DbiConnectionMaintainer::DbiConnectionMaintainer(DbiCascader* cascader) {

// For database connections that are not permanent, the connection is
// closed as soon as the last associated DbiStatement is
// deleted. However, standard context queries involve several separate
// SQL queries, each using its own DbiStatement and hence each involving
// a separate connection.  To maintain a single connection for the entire
// set of SQL queries a DbiConnectionMaintainer can be use.  On creation
// it connects to every DbiConnection which prevents it from closing.  On
// destruction it disconnects from them allowing them to close, if
// temporary, once any other associated DbiStatement has been deleted.

  LEA_CTOR    //Leak Checker

  MSG("Dbi", Msg::kVerbose) << "Creating DbiConnectionMaintainer" << endl;

  fCascader = cascader;
  if ( fCascader ) fCascader->HoldConnections();

}
//.....................................................................


DbiConnectionMaintainer::~DbiConnectionMaintainer() {

  if ( fCascader ) fCascader->ReleaseConnections();

  LEA_DTOR    //Leak Checker

  MSG("Dbi", Msg::kVerbose) << "Destroying DbiConnectionMaintainer" << endl;

}

/*    Template for New Member Function

//.....................................................................

DbiConnectionMaintainer:: {
//
//
//  Purpose:  
//
//  Arguments: 
//    xxxxxxxxx    in    yyyyyy
//
//  Return:    
//
//  Contact:   N. West
//
//  Specification:-
//  =============
//
//  o 

//  Program Notes:-
//  =============

//  None.


}

*/

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