2 * Sone - ImageImpl.java - Copyright © 2011–2013 David Roden
4 * This program is free software: you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation, either version 3 of the License, or
7 * (at your option) any later version.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program. If not, see <http://www.gnu.org/licenses/>.
17 package net.pterodactylus.sone.data;
19 import static com.google.common.base.Optional.absent;
20 import static com.google.common.base.Optional.fromNullable;
21 import static com.google.common.base.Optional.of;
22 import static com.google.common.base.Preconditions.checkNotNull;
23 import static com.google.common.base.Preconditions.checkState;
25 import java.util.UUID;
27 import com.google.common.base.Optional;
28 import com.google.common.hash.Hasher;
29 import com.google.common.hash.Hashing;
32 * Container for image metadata.
34 * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
36 public class ImageImpl implements Image {
38 /** The ID of the image. */
39 private final String id;
41 /** The Sone the image belongs to. */
44 /** The album this image belongs to. */
47 /** The request key of the image. */
50 /** The creation time of the image. */
51 private long creationTime;
53 /** The width of the image. */
56 /** The height of the image. */
59 /** The title of the image. */
62 /** The description of the image. */
63 private String description;
65 /** Creates a new image with a random ID. */
67 this(UUID.randomUUID().toString());
68 this.creationTime = System.currentTimeMillis();
72 * Creates a new image.
77 public ImageImpl(String id) {
78 this.id = checkNotNull(id, "id must not be null");
86 public String getId() {
91 public Sone getSone() {
96 public Album getAlbum() {
101 public Image setAlbum(Album album) {
102 checkNotNull(album, "album must not be null");
103 checkNotNull(album.getSone().equals(getSone()), "album must belong to the same Sone as this image");
109 public String getKey() {
114 public boolean isInserted() {
119 public long getCreationTime() {
124 public int getWidth() {
129 public int getHeight() {
134 public String getTitle() {
139 public String getDescription() {
143 public Modifier modify() throws IllegalStateException {
144 // TODO: reenable check for local images
145 return new Modifier() {
146 private Optional<Sone> sone = absent();
148 private Optional<Long> creationTime = absent();
150 private Optional<String> key = absent();
152 private Optional<String> title = absent();
154 private Optional<String> description = absent();
156 private Optional<Integer> width = absent();
158 private Optional<Integer> height = absent();
161 public Modifier setSone(Sone sone) {
162 this.sone = fromNullable(sone);
167 public Modifier setCreationTime(long creationTime) {
168 this.creationTime = of(creationTime);
173 public Modifier setKey(String key) {
174 this.key = fromNullable(key);
179 public Modifier setTitle(String title) {
180 this.title = fromNullable(title);
185 public Modifier setDescription(String description) {
186 this.description = fromNullable(description);
191 public Modifier setWidth(int width) {
192 this.width = of(width);
197 public Modifier setHeight(int height) {
198 this.height = of(height);
203 public Image update() throws IllegalStateException {
204 checkState(!sone.isPresent() || (ImageImpl.this.sone == null) || sone.get().equals(ImageImpl.this.sone), "can not change Sone once set");
205 checkState(!creationTime.isPresent() || ((ImageImpl.this.creationTime == 0) || (ImageImpl.this.creationTime == creationTime.get())), "can not change creation time once set");
206 checkState(!key.isPresent() || (ImageImpl.this.key == null) || key.get().equals(ImageImpl.this.key), "can not change key once set");
207 checkState(!width.isPresent() || (ImageImpl.this.width == 0) || width.get().equals(ImageImpl.this.width), "can not change width once set");
208 checkState(!height.isPresent() || (ImageImpl.this.height == 0) || height.get().equals(ImageImpl.this.height), "can not change height once set");
210 if (sone.isPresent()) {
211 ImageImpl.this.sone = sone.get();
213 if (creationTime.isPresent()) {
214 ImageImpl.this.creationTime = creationTime.get();
216 if (key.isPresent()) {
217 ImageImpl.this.key = key.get();
219 if (title.isPresent()) {
220 ImageImpl.this.title = title.get();
222 if (description.isPresent()) {
223 ImageImpl.this.description = description.get();
225 if (width.isPresent()) {
226 ImageImpl.this.width = width.get();
228 if (height.isPresent()) {
229 ImageImpl.this.height = height.get();
232 return ImageImpl.this;
238 // FINGERPRINTABLE METHODS
242 public String getFingerprint() {
243 Hasher hash = Hashing.sha256().newHasher();
244 hash.putString("Image(");
245 hash.putString("ID(").putString(id).putString(")");
246 hash.putString("Title(").putString(title).putString(")");
247 hash.putString("Description(").putString(description).putString(")");
249 return hash.hash().toString();
258 public int hashCode() {
259 return id.hashCode();
264 public boolean equals(Object object) {
265 if (!(object instanceof ImageImpl)) {
268 return ((ImageImpl) object).id.equals(id);