//
// AbstractExtraction.cpp
//
// $Id: //poco/Main/Data/src/AbstractExtraction.cpp#2 $
//
// Library: Data
// Package: DataCore
// Module:  AbstractExtraction
//
// Copyright (c) 2006, Applied Informatics Software Engineering GmbH.
// and Contributors.
//
// Permission is hereby granted, free of charge, to any person or organization
// obtaining a copy of the software and accompanying documentation covered by
// this license (the "Software") to use, reproduce, display, distribute,
// execute, and transmit the Software, and to prepare derivative works of the
// Software, and to permit third-parties to whom the Software is furnished to
// do so, all subject to the following:
// 
// The copyright notices in the Software and this entire statement, including
// the above license grant, this restriction and the following disclaimer,
// must be included in all copies of the Software, in whole or in part, and
// all derivative works of the Software, unless such copies or derivative
// works are solely in the form of machine-executable object code generated by
// a source language processor.
// 
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
// SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
// FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
// ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
// DEALINGS IN THE SOFTWARE.
//


#include "Poco/Data/AbstractExtraction.h"


namespace Poco {
namespace Data {


AbstractExtraction::AbstractExtraction(Poco::UInt32 limit,
	Poco::UInt32 position,
	bool bulk): 
	_pExtractor(0), 
	_limit(limit),
	_position(position),
	_bulk(bulk),
	_emptyStringIsNull(false),
	_forceEmptyString(false)
{
}


AbstractExtraction::~AbstractExtraction()
{
}


bool AbstractExtraction::isValueNull(const std::string& str, bool deflt)
{
	if (getForceEmptyString()) return false;

	if (getEmptyStringIsNull() && str.empty())
		return true;

	return deflt;
}


} } // namespace Poco::Data