Content Comparison

Interface for HashRingLocation<T>

public class HashRingNode<T>: INotifyPropertyChanged
{
  public UInt32 Key { get; set; }
  public T Item { get; set; }
  public HashRingNode<T> Next { get; set; }

  //Protected INotifyPropertyChanged Implementation
  
  //Property changed event
  public event PropertyChangedEventHandler PropertyChanged;
  
  // Set the property and notifies any listeners that it changed (if it did)
  protected void SetProperty<T>(ref T field, T value, Expression<Func<T>> memberExpression, params Expression<Func<object>  >[] moreNotifications)
  {
    // Must have member expression to find property name
    if (memberExpression == null){throw new ArgumentNullException(); }
    var bodyExpr = memberExpression.Body as MemberExpression;
    // Member expression must have a body (a property)
    if (bodyExpr == null){throw new ArgumentNullException();}
    // don't do anything unless the value changes
    if (EqualityComparer<T>.Default.Equals(field, value)) { return; }
    field = value;
    RaisePropertyChanged(memberExpression, moreNotifications);
  }
  // Raise property changed by names only (value needs to be reread)
  protected void RaisePropertyChanged<T>(Expression<Func<T>> memberExpression, params Expression<Func<object>>[] moreNotifications)
  {
    // Must have member expression to find property name
    if (memberExpression == null){  throw new ArgumentNullException(); }
    var bodyExpr = memberExpression.Body as MemberExpression;
    // Member expression must have a body (a property)
    if (bodyExpr == null){ throw new ArgumentNullException();}
    var handler = PropertyChanged;
    if (handler != null){
        handler(this, new PropertyChangedEventArgs(bodyExpr.Member.Name));
        foreach (Expression<Func<object>> notifyAlso in moreNotifications)
        {
            if (notifyAlso != null){
                var alsoExpr = notifyAlso.Body as MemberExpression;
                handler(this, new PropertyChangedEventArgs(alsoExpr.Member.Name));
            }
        }
    }
  }
}