MSHistoryHandler.h

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//# MSHistoryHandler: allow simple access to write or read HISTORY subtable
//# Copyright (C) 1996,1997,1998,1999,2000,2001,2002,2003
//# Associated Universities, Inc. Washington DC, USA.
//#
//# This program is free software; you can redistribute it and/or modify
//# it under the terms of the GNU General Public License as published by
//# the Free Software Foundation; either version 2 of the License, or
//# (at your option) any later version.
//#
//# This program is distributed in the hope that it will be useful,
//# but WITHOUT ANY WARRANTY; without even the implied warranty of
//# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
//# GNU General Public License for more details.
//#
//# You should have received a copy of the GNU General Public License
//# along with this program; if not, write to the Free Software
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//#
//# Correspondence concerning AIPS++ should be addressed as follows:
//#        Internet email: aips2-request@nrao.edu.
//#        Postal address: AIPS++ Project Office
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//# $Id: MSHistoryHandler.h 18405 2005-02-16 00:13:07Z rrusk $


#ifndef MS_MSHISTORYHANDLER_H
#define MS_MSHISTORYHANDLER_H

#include <ms/MeasurementSets/MeasurementSet.h>
#include <ms/MeasurementSets/MSHistory.h>


namespace casa { //# NAMESPACE CASA - BEGIN

class MSHistoryColumns;
class LogIO;
class LogSinkInterface;
// <summary>
// A class to provide a simple interface to history writing
// </summary>
// <use visibility=local>
// <etymology>
// Handle the history info that needs to be archived in ms
// </etymology>
// <synopsis>
// This class provides access to the MS history via single method calls
// A couple of the simple methods are independent and can be called without 
// constructing.  
// </synopsis>

class MSHistoryHandler
{

 public: 
  //Construct the history handler from an ms
  MSHistoryHandler(MeasurementSet& ms, String app="");

  MSHistoryHandler &operator=(MSHistoryHandler &other);
  // Destructor
  ~MSHistoryHandler();

  

  //Add a string message

  // This method does not need construction ...can be called explicitly 
  //
  static void addMessage(MeasurementSet& ms, String message,
             String app="",
             String cliComm="", 
             String origin="");

  // Add message and/or CLI command to the history table
  void addMessage(String message, String cliComm="", String origin="");
  // In this version the LogIO object need to have a valid LogSink with 
  // messages in it. 
  void addMessage(LogIO& message, String cliComm="");
  void addMessage(LogSinkInterface& sink, String cliComm="");

  void cliCommand(String& cliComm);
  void cliCommand(LogIO& cliComm);
  void cliCommand(LogSinkInterface& sink);

 private: 

  // Prevent use of default constructor
  MSHistoryHandler() {};

  MSHistoryColumns *msHistCol_p;
  MSHistory  histTable_p;
  String application_p;

};


} //# NAMESPACE CASA - END

#endif