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

namespace DTS.DASLib.Service
{

    // Custom comparer for the IDASCommunication class.
    public class IDASCommunicationEqComparer : IEqualityComparer<IDASCommunication>
    {
        // GainInfo are equal if their Gain is equal.
        public bool Equals(IDASCommunication x, IDASCommunication y)
        {
            // Check whether the compared objects reference the same data.
            if (Object.ReferenceEquals(x, y))
                return true;

            // Check whether any of the compared objects is null.
            if (Object.ReferenceEquals(x, null) || Object.ReferenceEquals(y, null))
                return false;

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

        // If Equals() returns true for a pair of objects,
        // GetHashCode must return the same value for these objects.

        public int GetHashCode(IDASCommunication idascom)
        {
            // Check whether the object is null.
            if (Object.ReferenceEquals(idascom, null))
                return 0;

            // Get the hash code for the Gain field.
            return idascom.SerialNumber.GetHashCode();
        }
    }
}