/*
 * (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 "odb_api/IteratorProxy.h"
#include "odb_api/WriterBufferingIterator.h"

namespace eckit { class PathName; }
namespace eckit { class DataHandle; }

namespace odb {

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 odb

#endif
