import static com.google.common.base.Optional.fromNullable;
import static com.google.common.base.Preconditions.checkNotNull;
+import static com.google.common.collect.FluentIterable.from;
+import static net.pterodactylus.sone.data.Reply.TIME_COMPARATOR;
import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
import java.util.Map;
import java.util.Set;
-import java.util.SortedSet;
-import java.util.TreeSet;
import java.util.concurrent.locks.ReadWriteLock;
import java.util.concurrent.locks.ReentrantReadWriteLock;
import net.pterodactylus.sone.data.Image;
import net.pterodactylus.sone.data.Post;
import net.pterodactylus.sone.data.PostReply;
-import net.pterodactylus.sone.data.Reply;
import net.pterodactylus.sone.data.Sone;
import net.pterodactylus.sone.data.impl.AlbumBuilderImpl;
import net.pterodactylus.sone.data.impl.ImageBuilderImpl;
import net.pterodactylus.util.config.ConfigurationException;
import com.google.common.base.Optional;
+import com.google.common.base.Predicate;
+import com.google.common.collect.HashMultimap;
+import com.google.common.collect.Multimap;
import com.google.common.collect.SortedSetMultimap;
import com.google.common.collect.TreeMultimap;
import com.google.common.util.concurrent.AbstractService;
import com.google.inject.Inject;
+import com.google.inject.Singleton;
/**
* Memory-based {@link PostDatabase} implementation.
*
* @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
*/
+@Singleton
public class MemoryDatabase extends AbstractService implements Database {
/** The lock. */
private final Map<String, Post> allPosts = new HashMap<String, Post>();
/** All posts by their Sones. */
- private final Map<String, Collection<Post>> sonePosts = new HashMap<String, Collection<Post>>();
-
- /** All posts by their recipient. */
- private final Map<String, Collection<Post>> recipientPosts = new HashMap<String, Collection<Post>>();
+ private final Multimap<String, Post> sonePosts = HashMultimap.create();
/** Whether posts are known. */
private final Set<String> knownPosts = new HashSet<String>();
public int compare(String leftString, String rightString) {
return leftString.compareTo(rightString);
}
- }, PostReply.TIME_COMPARATOR);
+ }, TIME_COMPARATOR);
/** Replies by post. */
- private final Map<String, SortedSet<PostReply>> postReplies = new HashMap<String, SortedSet<PostReply>>();
+ private final SortedSetMultimap<String, PostReply> postReplies = TreeMultimap.create(new Comparator<String>() {
+
+ @Override
+ public int compare(String leftString, String rightString) {
+ return leftString.compareTo(rightString);
+ }
+ }, TIME_COMPARATOR);
/** Whether post replies are known. */
private final Set<String> knownPostReplies = new HashSet<String>();
private final Map<String, Album> allAlbums = new HashMap<String, Album>();
+ private final Multimap<String, Album> soneAlbums = HashMultimap.create();
private final Map<String, Image> allImages = new HashMap<String, Image>();
+ private final Multimap<String, Image> soneImages = HashMultimap.create();
/**
* Creates a new memory database.
/** {@inheritDocs} */
@Override
- public Collection<Post> getDirectedPosts(String recipientId) {
+ public Collection<Post> getDirectedPosts(final String recipientId) {
lock.readLock().lock();
try {
- Collection<Post> posts = recipientPosts.get(recipientId);
- return (posts == null) ? Collections.<Post>emptySet() : new HashSet<Post>(posts);
+ return from(sonePosts.values()).filter(new Predicate<Post>() {
+ @Override
+ public boolean apply(Post post) {
+ return post.getRecipientId().asSet().contains(recipientId);
+ }
+ }).toSet();
} finally {
lock.readLock().unlock();
}
try {
allPosts.put(post.getId(), post);
getPostsFrom(post.getSone().getId()).add(post);
- if (post.getRecipientId().isPresent()) {
- getPostsTo(post.getRecipientId().get()).add(post);
- }
} finally {
lock.writeLock().unlock();
}
try {
allPosts.remove(post.getId());
getPostsFrom(post.getSone().getId()).remove(post);
- if (post.getRecipientId().isPresent()) {
- getPostsTo(post.getRecipientId().get()).remove(post);
- }
post.getSone().removePost(post);
} finally {
lock.writeLock().unlock();
lock.writeLock().lock();
try {
/* remove all posts by the Sone. */
- getPostsFrom(sone.getId()).clear();
- for (Post post : posts) {
+ Collection<Post> oldPosts = getPostsFrom(sone.getId());
+ for (Post post : oldPosts) {
allPosts.remove(post.getId());
- if (post.getRecipientId().isPresent()) {
- getPostsTo(post.getRecipientId().get()).remove(post);
- }
}
/* add new posts. */
getPostsFrom(sone.getId()).addAll(posts);
for (Post post : posts) {
allPosts.put(post.getId(), post);
- if (post.getRecipientId().isPresent()) {
- getPostsTo(post.getRecipientId().get()).add(post);
- }
}
} finally {
lock.writeLock().unlock();
getPostsFrom(sone.getId()).clear();
for (Post post : sone.getPosts()) {
allPosts.remove(post.getId());
- if (post.getRecipientId().isPresent()) {
- getPostsTo(post.getRecipientId().get()).remove(post);
- }
}
} finally {
lock.writeLock().unlock();
lock.writeLock().lock();
try {
allPostReplies.put(postReply.getId(), postReply);
- if (postReplies.containsKey(postReply.getPostId())) {
- postReplies.get(postReply.getPostId()).add(postReply);
- } else {
- TreeSet<PostReply> replies = new TreeSet<PostReply>(Reply.TIME_COMPARATOR);
- replies.add(postReply);
- postReplies.put(postReply.getPostId(), replies);
- }
+ postReplies.put(postReply.getPostId(), postReply);
} finally {
lock.writeLock().unlock();
}
for (PostReply postReply : postReplies) {
allPostReplies.put(postReply.getId(), postReply);
sonePostReplies.put(postReply.getSone().getId(), postReply);
- if (this.postReplies.containsKey(postReply.getPostId())) {
- this.postReplies.get(postReply.getPostId()).add(postReply);
- } else {
- TreeSet<PostReply> replies = new TreeSet<PostReply>(Reply.TIME_COMPARATOR);
- replies.add(postReply);
- this.postReplies.put(postReply.getPostId(), replies);
- }
+ this.postReplies.put(postReply.getPostId(), postReply);
}
} finally {
lock.writeLock().unlock();
allPostReplies.remove(postReply.getId());
if (postReplies.containsKey(postReply.getPostId())) {
postReplies.get(postReply.getPostId()).remove(postReply);
- if (postReplies.get(postReply.getPostId()).isEmpty()) {
- postReplies.remove(postReply.getPostId());
- }
}
} finally {
lock.writeLock().unlock();
lock.writeLock().lock();
try {
allAlbums.put(album.getId(), album);
+ soneAlbums.put(album.getSone().getId(), album);
} finally {
lock.writeLock().unlock();
}
lock.writeLock().lock();
try {
allAlbums.remove(album.getId());
+ soneAlbums.remove(album.getSone().getId(), album);
} finally {
lock.writeLock().unlock();
}
lock.writeLock().lock();
try {
allImages.put(image.getId(), image);
+ soneImages.put(image.getSone().getId(), image);
} finally {
lock.writeLock().unlock();
}
lock.writeLock().lock();
try {
allImages.remove(image.getId());
+ soneImages.remove(image.getSone().getId(), image);
} finally {
lock.writeLock().unlock();
}
* @return All posts
*/
private Collection<Post> getPostsFrom(String soneId) {
- Collection<Post> posts = null;
- lock.readLock().lock();
- try {
- posts = sonePosts.get(soneId);
- } finally {
- lock.readLock().unlock();
- }
- if (posts != null) {
- return posts;
- }
-
- posts = new HashSet<Post>();
- lock.writeLock().lock();
- try {
- sonePosts.put(soneId, posts);
- } finally {
- lock.writeLock().unlock();
- }
-
- return posts;
- }
-
- /**
- * Gets all posts that are directed the given Sone, creating a new collection
- * if there is none yet.
- *
- * @param recipientId
- * The ID of the Sone to get the posts for
- * @return All posts
- */
- private Collection<Post> getPostsTo(String recipientId) {
- Collection<Post> posts = null;
lock.readLock().lock();
try {
- posts = recipientPosts.get(recipientId);
+ return sonePosts.get(soneId);
} finally {
lock.readLock().unlock();
}
- if (posts != null) {
- return posts;
- }
-
- posts = new HashSet<Post>();
- lock.writeLock().lock();
- try {
- recipientPosts.put(recipientId, posts);
- } finally {
- lock.writeLock().unlock();
- }
-
- return posts;
}
/** Loads the known posts. */
private Collection<PostReply> getRepliesFrom(String id) {
lock.readLock().lock();
try {
- if (sonePostReplies.containsKey(id)) {
- return Collections.unmodifiableCollection(sonePostReplies.get(id));
- }
- return Collections.emptySet();
+ return Collections.unmodifiableCollection(sonePostReplies.get(id));
} finally {
lock.readLock().unlock();
}
projects / Sone.git / blobdiff