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package org.lambda.query;

import org.lambda.functions.Function1;

import java.util.Comparator;

public class OrderBy> implements Comparator
{
  public static enum Order {
                            Ascending, Descending
  }
  private Function1 f1;
  private int               ascending;
  public OrderBy(Function1 f1)
  {
    this(Order.Ascending, f1);
  }
  public OrderBy(Order order, Function1 f1)
  {
    this.f1 = f1;
    this.ascending = order == Order.Ascending ? 1 : -1;
  }
  public static > OrderBy ascending(Function1 f1)
  {
    return new OrderBy<>(Order.Ascending, f1);
  }
  public static > OrderBy descending(Function1 f1)
  {
    return new OrderBy<>(Order.Descending, f1);
  }
  @Override
  public int compare(T a, T b)
  {
    Comparable