src/Services/Ordering/Ordering.Domain/SeedWork/ValueObject.cs

（完整代码） 1KB 

namespace Microsoft.eShopOnContainers.Services.Ordering.Domain.SeedWork;

public abstract class ValueObject
{
    protected static bool EqualOperator(ValueObject left, ValueObject right)
    {
        if (ReferenceEquals(left, null) ^ ReferenceEquals(right, null))
        {
            return false;
        }
        return ReferenceEquals(left, null) || left.Equals(right);
    }

    protected static bool NotEqualOperator(ValueObject left, ValueObject right)
    {
        return !(EqualOperator(left, right));
    }

    protected abstract IEnumerable<object> GetEqualityComponents();

    public override bool Equals(object obj)
    {
        if (obj == null || obj.GetType() != GetType())
        {
            return false;
        }

        var other = (ValueObject)obj;

        return this.GetEqualityComponents().SequenceEqual(other.GetEqualityComponents());
    }

    public override int GetHashCode()
    {
        return GetEqualityComponents()
            .Select(x => x != null ? x.GetHashCode() : 0)
            .Aggregate((x, y) => x ^ y);
    }

    public ValueObject GetCopy()
    {
        return this.MemberwiseClone() as ValueObject;
    }
}

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