using DTS.Common.Interface.DASFactory;
using System;
using System.Collections.Generic;

namespace DTS.DASLib.Service.Interfaces
{
    // Custom comparer for the IDASCommunication class.
    public class IDASCommunicationComparer : IComparer<IDASCommunication>
    {
        public int Compare(IDASCommunication x, IDASCommunication y)
        {
            if (x == null && y == null)
            {
                return 0;
            }

            if (x != null && y == null)
            {
                return 1;
            }

            if (x == null && y != null)
            {
                return -1;
            }

            // Check whether the compared objects reference the same data.
            if (Object.ReferenceEquals(x, y))
            {
                return 0;
            }

            // Check whether the GainInfos' properties are equal.
            return x.SerialNumber.CompareTo(y.SerialNumber);
        }
    }
}