ArrayColumnFunc.h

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// # ArrayColumnFunbc.h: Functors to operate on an ArrayColumn
// # Copyright (C) 2009
// # 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 TABLES_ARRAYCOLUMNFUNC_H
#define TABLES_ARRAYCOLUMNFUNC_H
 
// # Includes
#include <casacore/casa/aips.h>
#include <casacore/tables/Tables/ArrayColumnBase.h>
#include <casacore/casa/Arrays/Slicer.h>
#include <casacore/casa/Arrays/ArrayBase.h>
 
namespace casacore {  // # NAMESPACE CASACORE - BEGIN
 
// <summary> Abstract baseclass for slices functors </summary>
// <synopsis>
// There are several ArrayColumn functions to get or put irregular array
// slices. ArrayColumnBase::handleSlices is used to perform all common
// operations using a functor derived from this base class.
// </synopsis>
class BaseSlicesFunctor {
 public:
  virtual ~BaseSlicesFunctor() {}
  virtual void apply(const Slicer& slicer, ArrayBase& arr) = 0;
};
 
// <summary> Functor to get irregular array slices from a cell</summary>
class GetCellSlices : public BaseSlicesFunctor {
 public:
  GetCellSlices(const ArrayColumnBase& col, rownr_t rownr) : itsCol(col), itsRow(rownr) {}
  virtual void apply(const Slicer& slicer, ArrayBase& arr) {
    itsCol.baseGetSlice(itsRow, slicer, arr);
  }
 
 private:
  const ArrayColumnBase& itsCol;
  rownr_t itsRow;
};
 
// <summary> Functor to get irregular array slices from a column</summary>
class GetColumnSlices : public BaseSlicesFunctor {
 public:
  GetColumnSlices(const ArrayColumnBase& col) : itsCol(col) {}
  virtual void apply(const Slicer& slicer, ArrayBase& arr) {
    itsCol.acbGetColumn(slicer, arr, False);
  }
 
 private:
  const ArrayColumnBase& itsCol;
};
 
// <summary> Functor to put irregular array slices into a cell </summary>
class PutCellSlices : public BaseSlicesFunctor {
 public:
  PutCellSlices(ArrayColumnBase& col, rownr_t rownr) : itsCol(col), itsRow(rownr) {}
  virtual void apply(const Slicer& slicer, ArrayBase& arr) {
    itsCol.basePutSlice(itsRow, slicer, arr);
  }
 
 private:
  ArrayColumnBase& itsCol;
  rownr_t itsRow;
};
 
// <summary> Functor to get irregular array slices from a column</summary>
class PutColumnSlices : public BaseSlicesFunctor {
 public:
  PutColumnSlices(ArrayColumnBase& col) : itsCol(col) {}
  virtual void apply(const Slicer& slicer, ArrayBase& arr) { itsCol.acbPutColumn(slicer, arr); }
 
 private:
  ArrayColumnBase& itsCol;
};
 
}  // namespace casacore
 
#endif