levelchange.h

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/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
 
#ifndef LOG4CXX_LEVEL_CHANGE_HDR_
#define LOG4CXX_LEVEL_CHANGE_HDR_
 
#include <log4cxx/logmanager.h>
#include <log4cxx/logger.h>
 
namespace LOG4CXX_NS
{

 class LevelChange
{
    LoggerPtr m_otherCategory;
    LevelPtr m_savedLevel;
public: // ...structors
    LevelChange(const LoggerPtr& otherCategory, const LevelPtr& level)
        : m_otherCategory(otherCategory)
        , m_savedLevel(otherCategory->getLevel())
    {
        m_otherCategory->setLevel(level);
    }

    LevelChange(const LoggerPtr& otherCategory, const LoggerPtr& thisCategory)
        : LevelChange(otherCategory, thisCategory->getLevel())
    {
    }

    template <class StringType>
    LevelChange(const StringType& otherCategory, const LevelPtr& level)
        : LevelChange(LogManager::getLogger(otherCategory), level)
    {
    }

    template <class StringType>
    LevelChange(const StringType& otherCategory, const LoggerPtr& thisCategory)
        : LevelChange(LogManager::getLogger(otherCategory), thisCategory->getLevel())
    {
    }

    ~LevelChange()
    {
        m_otherCategory->setLevel(m_savedLevel);
    }
private: // Prevent copies and assignment 
    LevelChange(const LevelChange&) = delete;
    LevelChange(LevelChange&&) = delete;
    LevelChange& operator=(const LevelChange&) = delete;
    LevelChange& operator=(LevelChange&&) = delete;
};
 
} // namespace LOG4CXX_NS
 
#endif // LOG4CXX_LEVEL_CHANGE_HDR_