static void Main(string[] args)
{
LogHandlerBase debugHandler = new DebugHandler();
LogHandlerBase infoHandler = new InfoHandler();
LogHandlerBase errorHandler = new ErrorHandler();
LogHandlerBase fatalHandler = new FatalHandler();
LogHandlerBase chainRoot = debugHandler;
debugHandler.SetNext(infoHandler);
infoHandler.SetNext(errorHandler);
errorHandler.SetNext(fatalHandler);
Console.WriteLine("Some error log", 2);
chainRoot.Handle("Some error log", 2);
Console.WriteLine("==================");
Console.WriteLine("Some fatal log", 1);
chainRoot.Handle("Some fatal log", 1);
Console.WriteLine("==================");
Console.WriteLine("Some debug log", 4);
chainRoot.Handle("Some debug log", 4);
Console.WriteLine("==================");
Console.WriteLine("Some info log", 3);
chainRoot.Handle("Some info log", 3);
Console.WriteLine("==================");
LogHandlerBase chainRoot2 = fatalHandler;
fatalHandler.SetNext(errorHandler);
errorHandler.SetNext(infoHandler);
infoHandler.SetNext(debugHandler);
Console.WriteLine("Some error log", 2);
chainRoot2.Handle("Some error log", 2);
Console.WriteLine("==================");
Console.WriteLine("Some fatal log", 1);
chainRoot2.Handle("Some fatal log", 1);
Console.WriteLine("==================");
Console.WriteLine("Some debug log", 4);
chainRoot2.Handle("Some debug log", 4);
Console.WriteLine("==================");
Console.WriteLine("Some info log", 3);
chainRoot2.Handle("Some info log", 3);
Console.WriteLine("==================");
}
public void SetNext(LogHandlerBase next)
{
this.next = next;
}
