ConstantSetter.h

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/*
 * (C) Copyright 1996-2012 ECMWF.
 * 
 * This software is licensed under the terms of the Apache Licence Version 2.0
 * which can be obtained at http://www.apache.org/licenses/LICENSE-2.0. 
 * In applying this licence, ECMWF does not waive the privileges and immunities 
 * granted to it by virtue of its status as an intergovernmental organisation nor
 * does it submit to any jurisdiction.
 */
 
#ifndef ConstantSetter_H
#define ConstantSetter_H
 
#include "odc/IteratorProxy.h"
#include "odc/ODAUpdatingIterator.h"
 
namespace odc {
 
template <typename T>
class ConstantSetter
{
public:
    typedef typename odc::ODAUpdatingIterator<T> iterator_class;
    typedef typename odc::IteratorProxy<iterator_class, ConstantSetter, const double> iterator;
 
    ConstantSetter(const T& b, const T& e, const std::vector<std::string>& columns, const std::vector<double>& values)
    : ii_(b), end_(e), columns_(columns), values_(values)
    {}
 
    ~ConstantSetter() {}
 
    iterator begin() { return iterator(new iterator_class(ii_, end_, columns_, values_)); }
    const iterator end() { return iterator(new iterator_class(end_)); }
 
private:
    T ii_;
    const T& end_;
    const std::vector<std::string> columns_;
    const std::vector<double> values_;
};
 
} // namespace odc
 
#include "odc/ConstantSetter.cc"
 
#endif