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.impl;
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 net.pterodactylus.sone.data.Album;
28 import net.pterodactylus.sone.data.IdBuilder;
29 import net.pterodactylus.sone.data.Image;
30 import net.pterodactylus.sone.data.Sone;
32 import com.google.common.base.Optional;
33 import com.google.common.hash.Hasher;
34 import com.google.common.hash.Hashing;
37 * Container for image metadata.
39 * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
41 public class ImageImpl implements Image {
43 private final IdBuilder idBuilder = new IdBuilder();
45 /** The ID of the image. */
46 private final String id;
48 /** The Sone the image belongs to. */
51 /** The album this image belongs to. */
54 /** The request key of the image. */
57 /** The creation time of the image. */
58 private long creationTime;
60 /** The width of the image. */
63 /** The height of the image. */
66 /** The title of the image. */
69 /** The description of the image. */
70 private String description;
72 /** Creates a new image with a random ID. */
74 this(UUID.randomUUID().toString());
75 this.creationTime = System.currentTimeMillis();
79 * Creates a new image.
84 public ImageImpl(String id) {
85 this.id = checkNotNull(id, "id must not be null");
93 public String getId() {
94 return idBuilder.buildId(sone.getId(), id);
98 public String getInternalId() {
103 public Sone getSone() {
108 public Album getAlbum() {
113 public Image setAlbum(Album album) {
114 checkNotNull(album, "album must not be null");
115 checkNotNull(album.getSone().equals(getSone()), "album must belong to the same Sone as this image");
121 public String getKey() {
126 public boolean isInserted() {
131 public long getCreationTime() {
136 public int getWidth() {
141 public int getHeight() {
146 public String getTitle() {
151 public String getDescription() {
155 public Modifier modify() throws IllegalStateException {
156 // TODO: reenable check for local images
157 return new Modifier() {
158 private Optional<Sone> sone = absent();
160 private Optional<Long> creationTime = absent();
162 private Optional<String> key = absent();
164 private Optional<String> title = absent();
166 private Optional<String> description = absent();
168 private Optional<Integer> width = absent();
170 private Optional<Integer> height = absent();
173 public Modifier setSone(Sone sone) {
174 this.sone = fromNullable(sone);
179 public Modifier setCreationTime(long creationTime) {
180 this.creationTime = of(creationTime);
185 public Modifier setKey(String key) {
186 this.key = fromNullable(key);
191 public Modifier setTitle(String title) {
192 this.title = fromNullable(title);
197 public Modifier setDescription(String description) {
198 this.description = fromNullable(description);
203 public Modifier setWidth(int width) {
204 this.width = of(width);
209 public Modifier setHeight(int height) {
210 this.height = of(height);
215 public Image update() throws IllegalStateException {
216 checkState(!sone.isPresent() || (ImageImpl.this.sone == null) || sone.get().equals(ImageImpl.this.sone), "can not change Sone once set");
217 checkState(!creationTime.isPresent() || ((ImageImpl.this.creationTime == 0) || (ImageImpl.this.creationTime == creationTime.get())), "can not change creation time once set");
218 checkState(!key.isPresent() || (ImageImpl.this.key == null) || key.get().equals(ImageImpl.this.key), "can not change key once set");
219 if (title.isPresent() && title.get().trim().isEmpty()) {
220 throw new ImageTitleMustNotBeEmpty();
222 checkState(!width.isPresent() || (ImageImpl.this.width == 0) || width.get().equals(ImageImpl.this.width), "can not change width once set");
223 checkState(!height.isPresent() || (ImageImpl.this.height == 0) || height.get().equals(ImageImpl.this.height), "can not change height once set");
225 if (sone.isPresent()) {
226 ImageImpl.this.sone = sone.get();
228 if (creationTime.isPresent()) {
229 ImageImpl.this.creationTime = creationTime.get();
231 if (key.isPresent()) {
232 ImageImpl.this.key = key.get();
234 if (title.isPresent()) {
235 ImageImpl.this.title = title.get();
237 if (description.isPresent()) {
238 ImageImpl.this.description = description.get();
240 if (width.isPresent()) {
241 ImageImpl.this.width = width.get();
243 if (height.isPresent()) {
244 ImageImpl.this.height = height.get();
247 return ImageImpl.this;
253 // FINGERPRINTABLE METHODS
257 public String getFingerprint() {
258 Hasher hash = Hashing.sha256().newHasher();
259 hash.putString("Image(");
260 hash.putString("ID(").putString(id).putString(")");
261 hash.putString("Title(").putString(title).putString(")");
262 hash.putString("Description(").putString(description).putString(")");
264 return hash.hash().toString();
273 public int hashCode() {
274 return id.hashCode();
279 public boolean equals(Object object) {
280 if (!(object instanceof ImageImpl)) {
283 return ((ImageImpl) object).id.equals(id);