AddDate() public static method

public static AddDate ( Field dateField, Field datePart, Field value ) : Field
dateField Field
datePart Field
value Field
return Field
        private void DateFunctions()
        {
            Register(config => config.Named("date")
                     .WhenExecute(context => Simple(context, () => SystemFunctions.CurrentDate(context.Request)))
                     .ReturnsType(PrimitiveTypes.Date()));

            Register(config => config.Named("time")
                     .WhenExecute(context => Simple(context, () => SystemFunctions.CurrentTime(context.Request)))
                     .ReturnsType(PrimitiveTypes.Time()));

            Register(config => config.Named("timestamp")
                     .WhenExecute(context => Simple(context, () => SystemFunctions.CurrentTimeStamp(context.Request)))
                     .ReturnsDateTime());

            Register(config => config.Named("system_date")
                     .WhenExecute(context => Simple(context, SystemFunctions.SystemDate))
                     .ReturnsType(PrimitiveTypes.Date()));

            Register(config => config.Named("system_time")
                     .WhenExecute(context => Simple(context, SystemFunctions.SystemTime))
                     .ReturnsType(PrimitiveTypes.Time()));

            Register(config => config
                     .Named("system_timestamp")
                     .WhenExecute(context => Simple(context, SystemFunctions.SystemTimeStamp))
                     .ReturnsDateTime());

            // ADD_DATE
            Register(config => config.Named("add_date")
                     .WithDateTimeParameter("date")
                     .WithStringParameter("datePart")
                     .WithNumericParameter("value")
                     .WhenExecute(context => Simple(context, args => SystemFunctions.AddDate(args[0], args[1], args[2])))
                     .ReturnsDateTime());

            // EXTRACT
            Register(config => config.Named("extract")
                     .WithDateTimeParameter("date")
                     .WithStringParameter("unit")
                     .WhenExecute(context => Simple(context, args => SystemFunctions.Extract(args[0], args[1])))
                     .ReturnsNumeric());

            // DATEFORMAT
            Register(config => config.Named("dateformat")
                     .WithDateTimeParameter("date")
                     .WithStringParameter("format")
                     .WhenExecute(context => Simple(context, args => SystemFunctions.DateFormat(args[0], args[1])))
                     .ReturnsString());

            // NEXT_DAY
            Register(config => config
                     .Named("next_day")
                     .WithDateTimeParameter("date")
                     .WithStringParameter("dayOfWeek")
                     .WhenExecute(context => Simple(context, args => SystemFunctions.NextDay(args[0], args[1])))
                     .ReturnsDateTime());
        }