Chain of responsibility

This chain of resposibility is from a system that handles a variety of reporting requests. The inheriting handlers are Russian dolled(each handler knows its successor).

namespace Components.Reports.QueryHandlers
{
    public abstract class ReportQueryHandler
    {
        protected ReportQueryHandler _reportHandlerSuccessor;
        protected ReportType _reportRequest;

        public ReportQueryHandler(ReportType reportType)
        {
            _reportRequest = reportType;
        }

        protected string LoadQuery(string queryFilePath)
        {
            if (!string.IsNullOrEmpty(queryFilePath))
                return File.ReadAllText(queryFilePath);
            else
                throw new ArgumentNullException(queryFilePath);
        }

        public virtual void HandleReportRequest()
        {
            if (_reportHandlerSuccessor != null)
                _reportHandlerSuccessor.HandleReportRequest();
        }
    }
}