X-Git-Url: https://git.pterodactylus.net/?a=blobdiff_plain;ds=inline;f=src%2Fmain%2Fjava%2Fnet%2Fpterodactylus%2Fsone%2Fdata%2FAlbum.java;h=a173e194efc6ae25bb966d50051998b9cfe11bbc;hb=f41ac326f99f0dfb804b0d433656ae87e170c268;hp=5375d983dabae801be1e3053e39bbcb93bdcbda6;hpb=6f019de1d4d9742981d851ac3c9097cca8bff58e;p=Sone.git
diff --git a/src/main/java/net/pterodactylus/sone/data/Album.java b/src/main/java/net/pterodactylus/sone/data/Album.java
index 5375d98..a173e19 100644
--- a/src/main/java/net/pterodactylus/sone/data/Album.java
+++ b/src/main/java/net/pterodactylus/sone/data/Album.java
@@ -17,35 +17,33 @@
package net.pterodactylus.sone.data;
-import static com.google.common.base.Preconditions.checkArgument;
-import static com.google.common.base.Preconditions.checkNotNull;
-import static com.google.common.base.Preconditions.checkState;
+import static java.util.Arrays.asList;
+import static java.util.Collections.emptyList;
import java.util.ArrayList;
+import java.util.Collections;
import java.util.Comparator;
-import java.util.HashMap;
import java.util.List;
-import java.util.Map;
-import java.util.UUID;
+import javax.annotation.Nonnull;
+
+import net.pterodactylus.sone.database.AlbumBuilder;
+import net.pterodactylus.sone.database.ImageBuilder;
import com.google.common.base.Function;
import com.google.common.base.Optional;
-import com.google.common.base.Predicates;
-import com.google.common.collect.Collections2;
+import com.google.common.base.Predicate;
import com.google.common.collect.FluentIterable;
import com.google.common.collect.ImmutableList;
-import com.google.common.hash.Hasher;
-import com.google.common.hash.Hashing;
/**
* Container for images that can also contain nested {@link Album}s.
*
* @author David âBombeâ Roden
*/
-public class Album implements Fingerprintable {
+public interface Album extends Identified, Fingerprintable {
/** Compares two {@link Album}s by {@link #getTitle()}. */
- public static final Comparator TITLE_COMPARATOR = new Comparator() {
+ Comparator TITLE_COMPARATOR = new Comparator() {
@Override
public int compare(Album leftAlbum, Album rightAlbum) {
@@ -54,10 +52,14 @@ public class Album implements Fingerprintable {
};
/** Function that flattens the given album and all albums beneath it. */
- public static final Function> FLATTENER = new Function>() {
+ Function> FLATTENER = new Function>() {
@Override
+ @Nonnull
public List apply(Album album) {
+ if (album == null) {
+ return emptyList();
+ }
List albums = new ArrayList();
albums.add(album);
for (Album subAlbum : album.getAlbums()) {
@@ -67,444 +69,140 @@ public class Album implements Fingerprintable {
}
};
- /** The ID of this album. */
- private final String id;
-
- /** The Sone this album belongs to. */
- private Sone sone;
-
- /** Nested albums. */
- private final List albums = new ArrayList();
-
- /** The image IDs in order. */
- private final List imageIds = new ArrayList();
-
- /** The images in this album. */
- private final Map images = new HashMap();
-
- /** The parent album. */
- private Album parent;
-
- /** The title of this album. */
- private String title;
-
- /** The description of this album. */
- private String description;
+ /** Function that transforms an album into the images it contains. */
+ Function> IMAGES = new Function>() {
- /** The ID of the album picture. */
- private String albumImage;
+ @Override
+ @Nonnull
+ public List apply(Album album) {
+ return (album != null) ? album.getImages() : Collections.emptyList();
+ }
+ };
/**
- * Creates a new album with a random ID.
+ * Filter that removes all albums that do not have any images in any album
+ * below it.
*/
- public Album() {
- this(UUID.randomUUID().toString());
- }
+ Predicate NOT_EMPTY = new Predicate() {
- /**
- * Creates a new album with the given ID.
- *
- * @param id
- * The ID of the album
- */
- public Album(String id) {
- this.id = checkNotNull(id, "id must not be null");
- }
-
- //
- // ACCESSORS
- //
+ @Override
+ public boolean apply(Album album) {
+ /* so, we flatten all albums below the given one and check whether at least one album⦠*/
+ return FluentIterable.from(asList(album)).transformAndConcat(FLATTENER).anyMatch(new Predicate() {
+
+ @Override
+ public boolean apply(Album album) {
+ /* â¦contains any inserted images. */
+ return !album.getImages().isEmpty() && FluentIterable.from(album.getImages()).allMatch(new Predicate() {
+
+ @Override
+ public boolean apply(Image input) {
+ return input.isInserted();
+ }
+ });
+ }
+ });
+ }
+ };
/**
* Returns the ID of this album.
*
* @return The ID of this album
*/
- public String getId() {
- return id;
- }
+ String getId();
/**
* Returns the Sone this album belongs to.
*
* @return The Sone this album belongs to
*/
- public Sone getSone() {
- return sone;
- }
-
- /**
- * Sets the owner of the album. The owner can only be set as long as the
- * current owner is {@code null}.
- *
- * @param sone
- * The album owner
- * @return This album
- */
- public Album setSone(Sone sone) {
- checkNotNull(sone, "sone must not be null");
- checkState((this.sone == null) || (this.sone.equals(sone)), "album owner must not already be set to some other Sone");
- this.sone = sone;
- return this;
- }
-
- /**
- * Returns the nested albums.
- *
- * @return The nested albums
- */
- public List getAlbums() {
- return new ArrayList(albums);
- }
-
- /**
- * Adds an album to this album.
- *
- * @param album
- * The album to add
- */
- public void addAlbum(Album album) {
- checkNotNull(album, "album must not be null");
- checkArgument(album.getSone().equals(sone), "album must belong to the same Sone as this album");
- checkState((this.parent == null) || (this.parent.equals(album.parent)), "album must not already be set to some other Sone");
- album.setParent(this);
- if (!albums.contains(album)) {
- albums.add(album);
- }
- }
+ Sone getSone();
- /**
- * Removes an album from this album.
- *
- * @param album
- * The album to remove
- */
- public void removeAlbum(Album album) {
- checkNotNull(album, "album must not be null");
- checkArgument(album.sone.equals(sone), "album must belong this albumâs Sone");
- checkArgument(equals(album.parent), "album must belong to this album");
- albums.remove(album);
- album.removeParent();
- }
-
- /**
- * Moves the given album up in this albumâs albums. If the album is already
- * the first album, nothing happens.
- *
- * @param album
- * The album to move up
- * @return The album that the given album swapped the place with, or
- * null
if the album did not change its place
- */
- public Album moveAlbumUp(Album album) {
- checkNotNull(album, "album must not be null");
- checkArgument(album.sone.equals(sone), "album must belong to the same Sone as this album");
- checkArgument(equals(album.parent), "album must belong to this album");
- int oldIndex = albums.indexOf(album);
- if (oldIndex <= 0) {
- return null;
- }
- albums.remove(oldIndex);
- albums.add(oldIndex - 1, album);
- return albums.get(oldIndex);
- }
-
- /**
- * Moves the given album down in this albumâs albums. If the album is
- * already the last album, nothing happens.
- *
- * @param album
- * The album to move down
- * @return The album that the given album swapped the place with, or
- * null
if the album did not change its place
- */
- public Album moveAlbumDown(Album album) {
- checkNotNull(album, "album must not be null");
- checkArgument(album.sone.equals(sone), "album must belong to the same Sone as this album");
- checkArgument(equals(album.parent), "album must belong to this album");
- int oldIndex = albums.indexOf(album);
- if ((oldIndex < 0) || (oldIndex >= (albums.size() - 1))) {
- return null;
- }
- albums.remove(oldIndex);
- albums.add(oldIndex + 1, album);
- return albums.get(oldIndex);
- }
+ List getAlbums();
/**
* Returns the images in this album.
*
* @return The images in this album
*/
- public List getImages() {
- return new ArrayList(Collections2.filter(Collections2.transform(imageIds, new Function() {
-
- @Override
- @SuppressWarnings("synthetic-access")
- public Image apply(String imageId) {
- return images.get(imageId);
- }
- }), Predicates.notNull()));
- }
+ List getImages();
- /**
- * Adds the given image to this album.
- *
- * @param image
- * The image to add
- */
- public void addImage(Image image) {
- checkNotNull(image, "image must not be null");
- checkNotNull(image.getSone(), "image must have an owner");
- checkArgument(image.getSone().equals(sone), "image must belong to the same Sone as this album");
- if (image.getAlbum() != null) {
- image.getAlbum().removeImage(image);
- }
- image.setAlbum(this);
- if (imageIds.isEmpty() && (albumImage == null)) {
- albumImage = image.getId();
- }
- if (!imageIds.contains(image.getId())) {
- imageIds.add(image.getId());
- images.put(image.getId(), image);
- }
- }
-
- /**
- * Removes the given image from this album.
- *
- * @param image
- * The image to remove
- */
- public void removeImage(Image image) {
- checkNotNull(image, "image must not be null");
- checkNotNull(image.getSone(), "image must have an owner");
- checkArgument(image.getSone().equals(sone), "image must belong to the same Sone as this album");
- imageIds.remove(image.getId());
- images.remove(image.getId());
- if (image.getId().equals(albumImage)) {
- if (images.isEmpty()) {
- albumImage = null;
- } else {
- albumImage = images.values().iterator().next().getId();
- }
- }
- }
-
- /**
- * Moves the given image up in this albumâs images. If the image is already
- * the first image, nothing happens.
- *
- * @param image
- * The image to move up
- * @return The image that the given image swapped the place with, or
- * null
if the image did not change its place
- */
- public Image moveImageUp(Image image) {
- checkNotNull(image, "image must not be null");
- checkNotNull(image.getSone(), "image must have an owner");
- checkArgument(image.getSone().equals(sone), "image must belong to the same Sone as this album");
- checkArgument(image.getAlbum().equals(this), "image must belong to this album");
- int oldIndex = imageIds.indexOf(image.getId());
- if (oldIndex <= 0) {
- return null;
- }
- imageIds.remove(image.getId());
- imageIds.add(oldIndex - 1, image.getId());
- return images.get(imageIds.get(oldIndex));
- }
-
- /**
- * Moves the given image down in this albumâs images. If the image is
- * already the last image, nothing happens.
- *
- * @param image
- * The image to move down
- * @return The image that the given image swapped the place with, or
- * null
if the image did not change its place
- */
- public Image moveImageDown(Image image) {
- checkNotNull(image, "image must not be null");
- checkNotNull(image.getSone(), "image must have an owner");
- checkArgument(image.getSone().equals(sone), "image must belong to the same Sone as this album");
- checkArgument(image.getAlbum().equals(this), "image must belong to this album");
- int oldIndex = imageIds.indexOf(image.getId());
- if ((oldIndex == -1) || (oldIndex >= (imageIds.size() - 1))) {
- return null;
- }
- imageIds.remove(image.getId());
- imageIds.add(oldIndex + 1, image.getId());
- return images.get(imageIds.get(oldIndex));
- }
-
- /**
- * Returns the album image of this album, or {@code null} if no album image
- * has been set.
- *
- * @return The image to show when this album is listed
- */
- public Image getAlbumImage() {
- if (albumImage == null) {
- return null;
- }
- return Optional.fromNullable(images.get(albumImage)).or(images.values().iterator().next());
- }
-
- /**
- * Sets the ID of the album image.
- *
- * @param id
- * The ID of the album image
- * @return This album
- */
- public Album setAlbumImage(String id) {
- this.albumImage = id;
- return this;
- }
+ Optional getAlbumImage();
/**
* Returns whether this album contains any other albums or images.
*
* @return {@code true} if this album is empty, {@code false} otherwise
*/
- public boolean isEmpty() {
- return albums.isEmpty() && images.isEmpty();
- }
+ boolean isEmpty();
/**
- * Returns the parent album of this album.
+ * Returns whether this album is an identitiyâs root album.
*
- * @return The parent album of this album, or {@code null} if this album
- * does not have a parent
+ * @return {@code true} if this album is an identityâs root album, {@code
+ * false} otherwise
*/
- public Album getParent() {
- return parent;
- }
+ boolean isRoot();
/**
- * Sets the parent album of this album.
- *
- * @param parent
- * The new parent album of this album
- * @return This album
- */
- protected Album setParent(Album parent) {
- this.parent = checkNotNull(parent, "parent must not be null");
- return this;
- }
-
- /**
- * Removes the parent album of this album.
+ * Returns the parent album of this album.
*
- * @return This album
+ * @return The parent album of this album, or {@code null} if this album does
+ * not have a parent
*/
- protected Album removeParent() {
- this.parent = null;
- return this;
- }
+ Album getParent();
/**
* Returns the title of this album.
*
* @return The title of this album
*/
- public String getTitle() {
- return title;
- }
-
- /**
- * Sets the title of this album.
- *
- * @param title
- * The title of this album
- * @return This album
- */
- public Album setTitle(String title) {
- this.title = checkNotNull(title, "title must not be null");
- return this;
- }
+ String getTitle();
/**
* Returns the description of this album.
*
* @return The description of this album
*/
- public String getDescription() {
- return description;
- }
+ String getDescription();
+
+ AlbumBuilder newAlbumBuilder() throws IllegalStateException;
+
+ ImageBuilder newImageBuilder() throws IllegalStateException;
/**
- * Sets the description of this album.
+ * Returns a modifier for this album.
*
- * @param description
- * The description of this album
- * @return This album
+ * @return A modifier for this album
+ * @throws IllegalStateException
+ * if this album can not be modified
*/
- public Album setDescription(String description) {
- this.description = checkNotNull(description, "description must not be null");
- return this;
- }
+ Modifier modify() throws IllegalStateException;
+
+ void moveUp();
- //
- // FINGERPRINTABLE METHODS
- //
+ void moveDown();
+
+ void remove() throws IllegalStateException;
/**
- * {@inheritDoc}
+ * Allows modifying an album. Modifications are only performed once {@link
+ * #update()} has succesfully returned a new album with the modifications
+ * made.
+ *
+ * @author David âBombeâ Roden
*/
- @Override
- public String getFingerprint() {
- Hasher hash = Hashing.sha256().newHasher();
- hash.putString("Album(");
- hash.putString("ID(").putString(id).putString(")");
- hash.putString("Title(").putString(title).putString(")");
- hash.putString("Description(").putString(description).putString(")");
- if (albumImage != null) {
- hash.putString("AlbumImage(").putString(albumImage).putString(")");
- }
-
- /* add nested albums. */
- hash.putString("Albums(");
- for (Album album : albums) {
- hash.putString(album.getFingerprint());
- }
- hash.putString(")");
+ interface Modifier {
- /* add images. */
- hash.putString("Images(");
- for (Image image : getImages()) {
- if (image.isInserted()) {
- hash.putString(image.getFingerprint());
- }
- }
- hash.putString(")");
+ Modifier setTitle(String title);
- hash.putString(")");
- return hash.hash().toString();
- }
+ Modifier setDescription(String description);
- //
- // OBJECT METHODS
- //
+ Modifier setAlbumImage(String imageId);
- /**
- * {@inheritDoc}
- */
- @Override
- public int hashCode() {
- return id.hashCode();
- }
+ Album update() throws IllegalStateException;
- /**
- * {@inheritDoc}
- */
- @Override
- public boolean equals(Object object) {
- if (!(object instanceof Album)) {
- return false;
- }
- Album album = (Album) object;
- return id.equals(album.id);
}
}