poco/Foundation/include/Poco/KeyValueArgs.h

//
// KeyValueArgs.h
//
// $Id: //poco/svn/Foundation/include/Poco/KeyValueArgs.h#2 $
//
// Library: Foundation
// Package: Cache
// Module:  KeyValueArgs
//
// Definition of the KeyValueArgs class.
//
// 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.
//


#ifndef  Foundation_KeyValueArgs_INCLUDED
#define  Foundation_KeyValueArgs_INCLUDED


#include "Poco/Foundation.h"


namespace Poco {


template <class TKey, class TValue> 
class KeyValueArgs
	/// Simply event arguments class to transfer a key and a value via an event call.
	/// Note that key and value are *NOT* copied, only references to them are stored.
{
public:
	KeyValueArgs(const TKey& aKey, const TValue& aVal): 
		_key(aKey), 
		_value(aVal)
	{
	}

	KeyValueArgs(const KeyValueArgs& args):
		_key(args._key), 
		_value(args._value)
	{
	}

	~KeyValueArgs()
	{
	}

	const TKey& key() const
		/// Returns a reference to the key,
	{
		return _key;
	}

	const TValue& value() const
		/// Returns a Reference to the value.
	{
		return _value;
	}

protected:
	const TKey&   _key;
	const TValue& _value;

private:
	KeyValueArgs& operator = (const KeyValueArgs& args);
};


} // namespace Poco


#endif