class.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_HELPERS_CLASS_H
#define _LOG4CXX_HELPERS_CLASS_H

#include <log4cxx/helpers/tchar.h>
#include <log4cxx/helpers/objectptr.h>

namespace log4cxx
{
	namespace helpers
	{
		class Object;
		typedef ObjectPtrT<Object> ObjectPtr;

		/**
		Thrown when an application tries to create an instance of a class using
		the newInstance method in class Class, but the specified class object
		cannot be instantiated because it is an interface or is an abstract class.
		*/
		class LOG4CXX_EXPORT InstantiationException : public Exception
		{
		public:
			InstantiationException() : Exception(_T("Abstract class")) {}
		};

		/**
		Thrown when an application tries to load in a class through its
		string name but no definition for the class with the specified name
		could be found.
		*/
		class LOG4CXX_EXPORT ClassNotFoundException : public Exception
		{
		public:
			ClassNotFoundException(const String& className);
		};

		class LOG4CXX_EXPORT Class
		{
		public:
			Class(const String& name);
			virtual ObjectPtr newInstance() const;
			const String& toString() const;
			const String& getName() const;
			static const Class& forName(const String& className);

		protected:
			static void registerClass(const Class * newClass);
			String name;
		};
	}  // namespace log4cxx
}; // namespace helper

#endif //_LOG4CXX_HELPERS_CLASS_H