Writer.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.
 */
 
///
/// \file Writer.h
///
/// @author Piotr Kuchta, Feb 2009
 
#ifndef ODAWRITER_H
#define ODAWRITER_H
 
#include "odc/IteratorProxy.h"
#include "odc/WriterBufferingIterator.h"
 
namespace eckit { class PathName; }
namespace eckit { class DataHandle; }
 
namespace odc {
 
typedef WriterBufferingIterator DefaultWritingIterator;
 
template <typename ITERATOR = DefaultWritingIterator>
class Writer
{
    enum { DEFAULT_ROWS_BUFFER_SIZE = 10000 };
public:
    typedef ITERATOR iterator_class;
    typedef IteratorProxy<ITERATOR, Writer> iterator;
 
    Writer(const eckit::PathName& path);
    Writer(eckit::DataHandle &, bool openDataHandle=true);
    Writer(eckit::DataHandle *, bool openDataHandle=true, bool deleteDataHandle=false);
    Writer();
    virtual ~Writer();
 
    iterator begin(bool openDataHandle=true);
 
    eckit::DataHandle& dataHandle() { return *dataHandle_; }
 
    ITERATOR* createWriteIterator(eckit::PathName, bool append = false);
 
    unsigned long rowsBufferSize() { return rowsBufferSize_; }
    Writer& rowsBufferSize(unsigned long n) { rowsBufferSize_ = n; }
 
    const eckit::PathName path() { return path_; }
 
private:
// No copy allowed
    Writer(const Writer&);
    Writer& operator=(const Writer&);
 
    const eckit::PathName path_;
    eckit::DataHandle* dataHandle_;
    unsigned long rowsBufferSize_;
 
    bool openDataHandle_;
    bool deleteDataHandle_;
};
 
} // namespace odc
 
#endif