MSFreqOffIndex.h

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// # MSFreqOffIndex: index into a MeasurementSet FREQ_OFFSET subtable
// # Copyright (C) 2000,2002
// # Associated Universities, Inc. Washington DC, USA.
// #
// # This library is free software; you can redistribute it and/or modify it
// # under the terms of the GNU Library General Public License as published by
// # the Free Software Foundation; either version 2 of the License, or (at your
// # option) any later version.
// #
// # This library 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 Library General Public
// # License for more details.
// #
// # You should have received a copy of the GNU Library General Public License
// # along with this library; if not, write to the Free Software Foundation,
// # Inc., 675 Massachusetts Ave, Cambridge, MA 02139, USA.
// #
// # Correspondence concerning AIPS++ should be addressed as follows:
// #        Internet email: casa-feedback@nrao.edu.
// #        Postal address: AIPS++ Project Office
// #                        National Radio Astronomy Observatory
// #                        520 Edgemont Road
// #                        Charlottesville, VA 22903-2475 USA
 
#ifndef MS_MSFREQOFFINDEX_H
#define MS_MSFREQOFFINDEX_H
 
#include <casacore/casa/aips.h>
#include <casacore/ms/MSSel/MSTableIndex.h>
 
#include <casacore/casa/Containers/RecordField.h>
 
namespace casacore {  // # NAMESPACE CASACORE - BEGIN
 
// # forward declarations
class MSFreqOffset;
 
// <summary>
// </summary>
 
// <use visibility=export>
 
// <reviewed reviewer="" date="yyyy/mm/dd" tests="" demos="">
// </reviewed>
 
// <prerequisite>
//   <li> MeasurementSet
//   <li> MSTableIndex
// </prerequisite>
//
// <etymology>
// </etymology>
//
// <synopsis>
// </synopsis>
//
// <example>
// </example>
//
// <motivation>
// </motivation>
//
// <thrown>
//    <li>
//    <li>
// </thrown>
//
 
class MSFreqOffIndex : public MSTableIndex {
 public:
  // no index attached, use the attach function or assignment operator to change that
  MSFreqOffIndex();
 
  // construct one using the indicated FREQOFF table
  MSFreqOffIndex(const MSFreqOffset &freqOffset);
 
  // construct one from another
  MSFreqOffIndex(const MSFreqOffIndex &other);
 
  virtual ~MSFreqOffIndex();
 
  MSFreqOffIndex &operator=(const MSFreqOffIndex &other);
 
  void attach(const MSFreqOffset &freqOffset);
 
  // access to the antenna1 ID key, throws an exception if isNull() is False
  Int &antenna1Id() { return *antenna1Id_p; }
 
  // access to the antenna2 ID key, throws an exception if isNull() is False
  Int &antenna2Id() { return *antenna2Id_p; }
 
  // access to the feed ID key, throws an exception if isNull() is False
  Int &feedId() { return *feedId_p; }
 
  // access to the spectral window ID key, throws an exception if isNull() is False
  Int &spectralWindowId() { return *spwId_p; }
 
 private:
  RecordFieldPtr<Int> antenna1Id_p, antenna2Id_p, feedId_p, spwId_p;
 
  void attachIds();
};
 
}  // namespace casacore
 
#endif