me.m1key.audiolicious.domain.entities.Album.java Source code

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Here is the source code for me.m1key.audiolicious.domain.entities.Album.java

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/* 
 * Audiolicious - Your Music Library Statistics
 * Copyright (C) 2011, Michal Huniewicz
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see http://www.m1key.me
 */

package me.m1key.audiolicious.domain.entities;

import java.util.Collections;
import java.util.HashSet;
import java.util.Set;

import javax.persistence.CascadeType;
import javax.persistence.Column;
import javax.persistence.Embedded;
import javax.persistence.Entity;
import javax.persistence.FetchType;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.JoinColumn;
import javax.persistence.ManyToOne;
import javax.persistence.OneToMany;
import javax.persistence.Table;
import javax.persistence.UniqueConstraint;

import org.apache.commons.lang.builder.EqualsBuilder;
import org.apache.commons.lang.builder.HashCodeBuilder;
import org.apache.commons.lang.builder.ToStringBuilder;

@Entity(name = "Album")
@Table(name = "ALBUMS", uniqueConstraints = { @UniqueConstraint(columnNames = { "ARTIST_ID", "NAME" }) })
public class Album {

    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    @Column(name = "ALBUM_ID")
    private Long id;

    @Column(name = "NAME", length = 255)
    private String name;

    @Embedded
    private Rating rating;

    @ManyToOne(fetch = FetchType.LAZY, optional = false, cascade = { CascadeType.MERGE })
    @JoinColumn(name = "ARTIST_ID")
    private Artist artist;

    @OneToMany(mappedBy = "album", fetch = FetchType.LAZY, cascade = CascadeType.ALL, orphanRemoval = true)
    private Set<Song> songs;

    // For proxying.
    protected Album() {
    }

    Album(AlbumInfo albumInfo, Artist artist) {
        this.name = albumInfo.getAlbumName();
        this.rating = new Rating(albumInfo.getAlbumRating());
        this.artist = artist;

        songs = new HashSet<Song>();
    }

    public Artist getArtist() {
        return artist;
    }

    public String getName() {
        return name;
    }

    public Rating getRating() {
        return rating;
    }

    public Set<Song> getSongs() {
        return Collections.unmodifiableSet(songs);
    }

    String addSong(SongInfo songInfo) {
        Song song = new Song(songInfo, this);
        songs.add(song);
        return getSong(songInfo).getUuid();
    }

    private Song getSong(SongInfo songInfo) {
        for (Song song : songs) {
            if (song.equals(new Song(songInfo, this))) {
                return song;
            }
        }
        return null;
    }

    @Override
    public int hashCode() {
        return new HashCodeBuilder().append(getName()).toHashCode();
    }

    @Override
    public boolean equals(final Object other) {
        if (!(other instanceof Album))
            return false;
        Album castOther = (Album) other;
        return new EqualsBuilder().append(getName(), castOther.getName()).append(getArtist(), castOther.getArtist())
                .isEquals();
    }

    @Override
    public String toString() {
        return new ToStringBuilder(this).append("name", getName()).toString();
    }

}