Recording.java

package com.ociweb.demo;

import com.ociweb.lang.ObjectUtil;
import java.util.*;

/**
 * This is just a Java Bean.
 */
public class Recording {

  private Artist artist;
  private List<Track> tracks = new ArrayList<Track>();
  private String title;
  private int year;

  public Recording() {}
  public Recording(Artist artist, String title, int year) {
    // Note that JSON-lib can't handle circular dependencies
    // so the Recording objects can't hold a reference to their Artist
    // because the Artist holds a reference to them.
    // This is why we're not holding onto the Artist here.
    //this.artist = artist;
    this.title = title;
    this.year = year;
  }

  public void addTrack(Track track) {
    tracks.add(track);
  }

  public Track addTrack(String name, int rating) {
    Track t = new Track(this, name, rating);
    addTrack(t);
    return t;
  }

  public boolean equals(Object obj) {
    if (obj == null) return false;
    if (obj == this) return true;
    if (!(obj instanceof Recording)) return false;
    Recording r = (Recording) obj;

    boolean sameArtist =
      artist == null ? r.artist == null :
      ObjectUtil.equals(artist.getName(), r.artist.getName());

    return sameArtist &&
      ObjectUtil.equals(title, r.title) &&
      year == r.year;
  }

  public Artist getArtist() { return artist; }
  public void setArtist(Artist artist) { this.artist = artist; }

  public String getTitle() { return title; }
  public void setTitle(String title) { this.title = title; }

  public List<Track> getTracks() { return tracks; }
  public void setTracks(List<Track> tracks) {
    this.tracks = tracks;
  }

  public int getYear() { return year; }
  public void setYear(int year) { this.year = year; }

  public String toString() {
    return "Recording: " + title +
      " by " + (artist == null ? "null" : artist.getName()) +
      " from " + year;
  }
}

Copyright © 2007 Object Computing, Inc. All rights reserved.