ArrayAggregationBase.h

// This file is part of the "NcML Module" project, a BES module designed
// to allow NcML files to be used to be used as a wrapper to add
// AIS to existing datasets of any format.
//
// Copyright (c) 2010 OPeNDAP, Inc.
// Author: Michael Johnson  <m.johnson@opendap.org>
//
// For more information, please also see the main website: http://opendap.org/
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 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
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
//
// Please see the files COPYING and COPYRIGHT for more information on the GLPL.
//
// You can contact OPeNDAP, Inc. at PO Box 112, Saunderstown, RI. 02874-0112.
#ifndef __AGG_UTIL__ARRAY_AGGREGATION_BASE_H__
#define __AGG_UTIL__ARRAY_AGGREGATION_BASE_H__
 
#include <memory> // std
 
#include <libdap/Array.h> // libdap
 
#include "AggMemberDataset.h" // agg_util
#include "AggregationUtil.h" // agg_util
 
namespace libdap {
    class ConstraintEvaluator;
    class DDS;
    class Marshaller;
}
 
namespace agg_util
{
  class ArrayAggregationBase : public libdap::Array
  {
  public:
    ArrayAggregationBase(
        const libdap::Array& granuleProto, // prototype for granule
        AMDList memberDatasets, // granule descs to use for the agg
        std::unique_ptr<ArrayGetterInterface> arrayGetter // way to get the data array
        );
 
    ArrayAggregationBase(const ArrayAggregationBase& rhs);
 
    ~ArrayAggregationBase() override;
 
    ArrayAggregationBase& operator=(const ArrayAggregationBase& rhs);

    ArrayAggregationBase* ptr_duplicate() override;

    bool read() override;

    const AMDList& getDatasetList() const;
 
  protected:
 

    void printConstraints(const Array& fromArray);

    libdap::Array& getGranuleTemplateArray();

    const ArrayGetterInterface& getArrayGetterInterface() const;
 
  protected: // Subclass Interface

    virtual void transferOutputConstraintsIntoGranuleTemplateHook();

    virtual void readConstrainedGranuleArraysAndAggregateDataHook();
 
  private:

    void duplicate(const ArrayAggregationBase& rhs);

    void cleanup() noexcept;


    std::unique_ptr<libdap::Array> _pSubArrayProto;

    std::unique_ptr<ArrayGetterInterface> _pArrayGetter;

    AMDList _datasetDescs;
 
  };
 
}
 
#endif /* __AGG_UTIL__ARRAY_AGGREGATION_BASE_H__ */