private void AssertComparable(ISqlValue a, ISqlValue b)
{
if (a == null || b == null)
{
return;
}
if (!a.IsComparableTo(b))
{
throw new ArgumentException("Values are not comparable");
}
}
/// <inheritdoc/>
public virtual int Compare(ISqlValue x, ISqlValue y)
{
if (x == null && y == null)
{
return(0);
}
if (x == null)
{
return(1);
}
if (y == null)
{
return(-1);
}
if (!x.IsComparableTo(y))
{
throw new NotSupportedException();
}
return(((IComparable)x).CompareTo(y));
}