poco/Foundation/include/Poco/NullChannel.h

//
// NullChannel.h
//
// $Id: //poco/1.4/Foundation/include/Poco/NullChannel.h#1 $
//
// Library: Foundation
// Package: Logging
// Module:  NullChannel
//
// Definition of the NullChannel class.
//
// Copyright (c) 2004-2006, 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
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// DEALINGS IN THE SOFTWARE.
//


#ifndef Foundation_NullChannel_INCLUDED
#define Foundation_NullChannel_INCLUDED


#include "Poco/Foundation.h"
#include "Poco/Channel.h"


namespace Poco {


class Foundation_API NullChannel: public Channel
	/// The NullChannel is the /dev/null of Channels.
	///
	/// A NullChannel discards all information sent to it.
	/// Furthermore, its setProperty() method ignores 
	/// all properties, so it the NullChannel has the
	/// nice feature that it can stand in for any
	/// other channel class in a logging configuration.
{
public:
	NullChannel();
		/// Creates the NullChannel.

	~NullChannel();
		/// Destroys the NullChannel.

	void log(const Message& msg);
		/// Does nothing.

	void setProperty(const std::string& name, const std::string& value);
		/// Ignores both name and value.
};


} // namespace Poco


#endif // Foundation_NullChannel_INCLUDED