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CdbPayloadUtils.hh

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//-----------------------------------------------------------------------------
// File and Version Information
//      $Id: CdbPayloadUtils.hh,v 1.1 2005/07/13 20:00:58 jtinslay Exp $
//
// Description:
//      Class CdbPayloadUtils
//      Utility functions for payload applications
//
// Environment:
//      Software developed for the BaBar Detector at the SLAC B-Factory.
//
// Author List:
//      Jane Tinslay                
//
// Copyright Information:
//      Copyright (C) 2005          SLAC
//
//-----------------------------------------------------------------------------
#ifndef CDBPAYLOADUTILS_HH
#define CDBPAYLOADUTILS_HH

//-------------------------------
// Collaborating Class Headers --
//-------------------------------
#include "CdbBase/Cdb.hh"
#include "CdbBase/CdbObjectTranslator.hh"
#include "CdbBase/CdbProxyElement.hh"
#include "CdbBase/CdbStatus.hh"
#include <string>
#include <vector>

using std::string;
using std::vector;

namespace CdbPayloadUtils {
  
  namespace {
    
    //Helper class lifted from DchProxy/DchDetectorProxy
    class hasBeenUpdated {
    public:
      hasBeenUpdated(const string& name): _name(name) {};
      bool operator()(const CdbProxyElement& e) const
      {return e.name()==_name && e.updated();}
    private:
      string _name;
    };
    
  }
  
  //Return pointer to transient if given condition is present
  //in CdbProxyElement list and is updated
  template <typename T>
  T* transient(const string&, const std::vector<CdbProxyElement>&);
  
  //Register translator with Cdb
  inline void registerTranslator(CdbObjectTranslator* translator) {
    if( CdbStatus::Success != Cdb::instance()->registerTranslator(translator)) {
      ErrMsg(fatal) << "Failed to register translator " <<endmsg;
    }
  }
  
};

#ifdef BABAR_COMP_INST
#include "CdbBase/CdbPayloadUtils.cc"
#endif

#endif

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