SequentialExecution.java

/*
 * Copyright (c) 2018 https://www.reactivedesignpatterns.com/ 
 *
 * Copyright (c) 2018 https://rdp.reactiveplatform.xyz/
 *
 */

public class SequentialExecution {
  public static class ReplyA {}

  public static class ReplyB {}

  public static class ReplyC {}

  public static class Result {
    final ReplyA replyA;
    final ReplyB replyB;
    final ReplyC replyC;

    public Result(ReplyA replyA, ReplyB replyB, ReplyC replyC) {
      this.replyA = replyA;
      this.replyB = replyB;
      this.replyC = replyC;
    }
  }

  public static Result aggregate(ReplyA replyA, ReplyB replyB, ReplyC replyC) {
    return new Result(replyA, replyB, replyC);
  }

  public static ReplyA computeA() {
    return new ReplyA(); // return from compute
  }

  public static ReplyB computeB() {
    return new ReplyB(); // return from compute
  }

  public static ReplyC computeC() {
    return new ReplyC(); // return from compute
  }

  public static void main(String[] args) {
    // #snip
    final ReplyA a = computeA();
    final ReplyB b = computeB();
    final ReplyC c = computeC();

    final Result r = aggregate(a, b, c);
    // #snip

    System.out.println(r);
  }
}