NullLogger.h

Go to the documentation of this file.

// Copyright Onix Solutions Limited [OnixS]. All rights reserved.
//
// This software owned by Onix Solutions Limited [OnixS] and is
// protected by copyright law and international copyright treaties.
//
// Access to and use of the software is governed by the terms of the applicable
// OnixS Software Services Agreement (the Agreement) and Customer end user license
// agreements granting a non-assignable, non-transferable and non-exclusive license
// to use the software for it's own data processing purposes under the terms defined
// in the Agreement.
//
// Except as otherwise granted within the terms of the Agreement, copying or
// reproduction of any part of this source code or associated reference material
// to any other location for further reproduction or redistribution, and any
// amendments to this copyright notice, are expressly prohibited.
//
// Any reproduction or redistribution for sale or hiring of the Software not in
// accordance with the terms of the Agreement is a violation of copyright law.
//

#pragma once

#include <OnixS/CME/MDH/Logger.h>

ONIXS_CMEMDH_NAMESPACE_BEGIN

/// Implements logging services to put data to nowhere.
struct ONIXS_CMEMDH_EXPORTED NullLogger : Logger
{
    /// Initializes logger according to given settings.
    NullLogger() {}

    /// In fact, does nothing.
    ~NullLogger() ONIXS_CMEMDH_OVERRIDE {}

    /// Basic information on the implementation
    /// of the logging services.
    void info(std::string& str) ONIXS_CMEMDH_OVERRIDE
    {
        str += "OnixS Null Logger";
    }

    /// As implementation supposes no data recording,
    /// always return NULL to make logging impossible.
    LogEntry* addEntry(LogSeverity::Enum) ONIXS_CMEMDH_OVERRIDE
    {
        return ONIXS_CMEMDH_NULLPTR;
    }

    /// Returns an instance of the NullLogger
    static NullLogger& self();
};

ONIXS_CMEMDH_NAMESPACE_END