C:/Projekte/RAIS/common/SealedSource.cs

Go to the documentation of this file.

using System;
using System.Collections.Generic;
using System.Text;
using System.Data;

namespace RAIS.Common
{
    public class SealedSource
    {
        #region Constants
        private const string REGNOMBER_FIELD_NAME = "Regulatory Authority Source No";
        private const string ONE_NUCLIDE_FIELD_NAME = "One Nuclide";
        private const string ISOTOPE_FIELD_NAME = "FirstOfIsotope";
        private const string HALF_LIFE_FIELD_NAME = "FirstOfHalf Life";
        private const string FACTOR_FIELD_NAME = "FirstOfFactor";
        private const string ACTIVITY_DATE_FIELD_NAME = "Activity Date";
        private const string ACTIVITY_FIELD_NAME = "Activity";
        private const string INTERVAL_FIELD_NAME = "Interval";
        private const string NAME_FIELD_NAME = "Name";

        private const string NO_NUCLIDE_MESSAGE = "Source does not have a single nuclide. May not compute";
        private const string NO_HALFLIFE_MESSAGE = "Halflife of nuclide {0} is unknown. May not compute";
        private const string NO_DATE_MESSAGE = "Unknown Sealed Source Activity or Date. May not compute";
        #endregion

        #region Fields
        string name;
        double halfLife;
        double factor;
        DateTime activityDateField;
        double activityField;

        string nuclide;
        string activityDate;
        string activity;
        string calculationActivity;
        string regNumber;
        DateTime calculationDate;
        #endregion

        #region Properties



        public string RegNumber { get { return regNumber; } }
        public DateTime CalculationDate
        {
            get { return calculationDate; }
            set
            {
                calculationDate = value;
                calculationActivity = CalculateActivity();
            }
        }
        public string CalculationActivity { get { return calculationActivity; } }
        public string Nuclide { get { return nuclide; } }
        public string ActivityDate { get { return activityDate; } }
        public string Activity { get { return activity; } }
        #endregion

        #region Private methods

        private void Init(IDataReader reader, DateTime calculation)
        {
            regNumber = (string)reader[REGNOMBER_FIELD_NAME];
            CalculationDate = calculation;
            int oneNuclide = (int)reader[ONE_NUCLIDE_FIELD_NAME];
            string firstOfIsotope;
            string interval;

            if (oneNuclide != 1 || reader[ISOTOPE_FIELD_NAME] is DBNull)
            {
                nuclide = NO_NUCLIDE_MESSAGE;
                return;
            }

            firstOfIsotope = (string)reader[ISOTOPE_FIELD_NAME];
            if (reader[HALF_LIFE_FIELD_NAME] is DBNull || reader[FACTOR_FIELD_NAME] is DBNull)
            {
                nuclide = string.Format(NO_HALFLIFE_MESSAGE, firstOfIsotope);
                return;
            }
            factor = (double)reader[FACTOR_FIELD_NAME];
            halfLife = (double)reader[HALF_LIFE_FIELD_NAME];
            interval = reader[INTERVAL_FIELD_NAME] is DBNull ? "" : (string)reader[INTERVAL_FIELD_NAME];
            nuclide = firstOfIsotope + ", having a halflife of " + halfLife + " " + interval + "(s)";
            if (reader[ACTIVITY_DATE_FIELD_NAME] is DBNull || reader[ACTIVITY_FIELD_NAME] is DBNull)
            {
                activityDate = NO_DATE_MESSAGE;
                return;
            }
            activityDateField = (DateTime)reader[ACTIVITY_DATE_FIELD_NAME];

            activityField = (double)reader[ACTIVITY_FIELD_NAME];
            name = reader[NAME_FIELD_NAME] is DBNull ? "" : (string)reader[NAME_FIELD_NAME];

            activityDate = activityDateField.Date.ToString("dd.MM.yyyy");
            activity = activityField.ToString("E2") + " " + name;
            calculationActivity = CalculateActivity();
        }
        private string CalculateActivity()
        {
            double result;
            if (factor * halfLife == 0)
                result = 0;
            else
            {
                double timeStamp = (CalculationDate.Date - activityDateField).TotalSeconds;
                double extent = timeStamp / (halfLife * factor);
                result = activityField * Math.Pow(2, -extent);
            }
            return result.ToString("E2") + " " + name;
        }
        #endregion





        public SealedSource(IDataReader reader, DateTime calculation)
        {
            Init(reader, calculation);
        }
        public SealedSource() { calculationDate = DateTime.Now; regNumber = ""; }
    }
}