hierarchyeventlistener.h

功能非常强的写日志程序

/*
 * Copyright 2003,2004 The Apache Software Foundation.
 * 
 * Licensed 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_SPI_HIERARCHY_EVENT_LISTENER_H
#define _LOG4CXX_SPI_HIERARCHY_EVENT_LISTENER_H

#include <log4cxx/helpers/object.h>
#include <log4cxx/helpers/objectptr.h>
#include <vector>

namespace log4cxx
{
	class Logger;
	typedef helpers::ObjectPtrT<Logger> LoggerPtr;
	class Appender;
	typedef helpers::ObjectPtrT<Appender> AppenderPtr;
	
	namespace spi
	{
		class HierarchyEventListener;
		typedef log4cxx::helpers::ObjectPtrT<HierarchyEventListener> 
			HierarchyEventListenerPtr;
		typedef std::vector<HierarchyEventListenerPtr> HierarchyEventListenerList;
			
		/** Listen to events occuring within a Hierarchy.*/
		class LOG4CXX_EXPORT HierarchyEventListener :
			public virtual log4cxx::helpers::Object
		{
		public:
			virtual ~HierarchyEventListener() {}

			virtual void addAppenderEvent(const LoggerPtr& logger, const AppenderPtr& 
				appender) = 0;
				
			virtual void removeAppenderEvent(const LoggerPtr& logger,
				const AppenderPtr& appender) = 0;
		};
	}  // namespace spi
}; // namespace log4cxx

#endif //_LOG4CXX_SPI_HIERARCHY_EVENT_LISTENER_H