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117 lines
3.0 KiB
C++
117 lines
3.0 KiB
C++
//
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// Range.h
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//
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// $Id: //poco/Main/Data/include/Poco/Data/Range.h#5 $
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//
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// Library: Data
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// Package: DataCore
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// Module: Range
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//
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// Definition of the Range class.
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//
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// Copyright (c) 2006, Applied Informatics Software Engineering GmbH.
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// and Contributors.
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//
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// Permission is hereby granted, free of charge, to any person or organization
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// obtaining a copy of the software and accompanying documentation covered by
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// this license (the "Software") to use, reproduce, display, distribute,
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// execute, and transmit the Software, and to prepare derivative works of the
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// Software, and to permit third-parties to whom the Software is furnished to
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// do so, all subject to the following:
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//
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// The copyright notices in the Software and this entire statement, including
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// the above license grant, this restriction and the following disclaimer,
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// must be included in all copies of the Software, in whole or in part, and
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// all derivative works of the Software, unless such copies or derivative
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// works are solely in the form of machine-executable object code generated by
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// a source language processor.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
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// SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
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// FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
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// ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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// DEALINGS IN THE SOFTWARE.
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//
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#ifndef Data_Range_INCLUDED
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#define Data_Range_INCLUDED
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#include "Poco/Data/Data.h"
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#include "Poco/Data/Limit.h"
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namespace Poco {
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namespace Data {
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class Data_API Range
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/// Range stores information how many rows a query should return.
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{
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public:
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Range(Poco::UInt32 lowValue, Poco::UInt32 upValue, bool hardLimit);
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/// Creates the Range. lowValue must be smaller equal than upValue
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~Range();
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/// Destroys the Limit.
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const Limit& lower() const;
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/// Returns the lower limit
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const Limit& upper() const;
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/// Returns the upper limit
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private:
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Limit _lower;
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Limit _upper;
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};
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//
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// inlines
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//
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inline const Limit& Range::lower() const
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{
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return _lower;
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}
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inline const Limit& Range::upper() const
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{
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return _upper;
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}
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template <typename T> Limit limit(T lim, bool hard = false)
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/// Creates an upperLimit
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{
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return Limit(static_cast<Poco::UInt32>(lim), hard, false);
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}
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template <typename T> Limit upperLimit(T lim, bool hard = false)
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{
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return limit(lim, hard);
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}
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template <typename T> Limit lowerLimit(T lim)
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{
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return Limit(static_cast<Poco::UInt32>(lim), true, true);
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}
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template <typename T> Range range(T low, T upp, bool hard = false)
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{
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return Range(static_cast<Poco::UInt32>(low), static_cast<Poco::UInt32>(upp), hard);
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}
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} } // namespace Poco::Data
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#endif // Data_Range_INCLUDED
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