X-Git-Url: https://git.pterodactylus.net/?p=Sone.git;a=blobdiff_plain;f=src%2Fmain%2Fjava%2Fnet%2Fpterodactylus%2Fsone%2Fdatabase%2Fmemory%2FMemoryBookmarkDatabase.java;fp=src%2Fmain%2Fjava%2Fnet%2Fpterodactylus%2Fsone%2Fdatabase%2Fmemory%2FMemoryBookmarkDatabase.java;h=1aec5734090e61aac828aa3a1a60d99f9f40714b;hp=0000000000000000000000000000000000000000;hb=aba6bd1d58ef244050703e1b99d7389e024809c6;hpb=aeed1ea944bcfa2cc057ba99d258c055e55a9e2d

diff --git a/src/main/java/net/pterodactylus/sone/database/memory/MemoryBookmarkDatabase.java b/src/main/java/net/pterodactylus/sone/database/memory/MemoryBookmarkDatabase.java
new file mode 100644
index 0000000..1aec573
--- /dev/null
+++ b/src/main/java/net/pterodactylus/sone/database/memory/MemoryBookmarkDatabase.java
@@ -0,0 +1,86 @@
+package net.pterodactylus.sone.database.memory;
+
+import static com.google.common.collect.FluentIterable.from;
+
+import java.util.HashSet;
+import java.util.Set;
+import java.util.concurrent.locks.ReadWriteLock;
+import java.util.concurrent.locks.ReentrantReadWriteLock;
+
+import net.pterodactylus.sone.data.Post;
+import net.pterodactylus.sone.database.BookmarkDatabase;
+
+import com.google.common.base.Function;
+
+/**
+ * Memory-based {@link BookmarkDatabase} implementation.
+ *
+ * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
+ */
+public class MemoryBookmarkDatabase implements BookmarkDatabase {
+
+	private final ReadWriteLock lock = new ReentrantReadWriteLock();
+	private final MemoryDatabase memoryDatabase;
+	private final Set<String> bookmarkedPosts = new HashSet<String>();
+
+	public MemoryBookmarkDatabase(MemoryDatabase memoryDatabase) {
+		this.memoryDatabase = memoryDatabase;
+	}
+
+	@Override
+	public void bookmarkPost(String postId) {
+		lock.writeLock().lock();
+		try {
+			bookmarkedPosts.add(postId);
+		} finally {
+			lock.writeLock().unlock();
+		}
+	}
+
+	@Override
+	public void bookmarkPost(Post post) {
+		lock.writeLock().lock();
+		try {
+			bookmarkedPosts.add(post.getId());
+		} finally {
+			lock.writeLock().unlock();
+		}
+	}
+
+	@Override
+	public void unbookmarkPost(Post post) {
+		lock.writeLock().lock();
+		try {
+			bookmarkedPosts.remove(post.getId());
+		} finally {
+			lock.writeLock().unlock();
+		}
+	}
+
+	@Override
+	public boolean isPostBookmarked(Post post) {
+		lock.readLock().lock();
+		try {
+			return bookmarkedPosts.contains(post.getId());
+		} finally {
+			lock.readLock().unlock();
+		}
+	}
+
+	@Override
+	public Set<Post> getBookmarkedPosts() {
+		lock.readLock().lock();
+		try {
+			return from(bookmarkedPosts).transformAndConcat(
+					new Function<String, Iterable<Post>>() {
+						@Override
+						public Iterable<Post> apply(String postId) {
+							return memoryDatabase.getPost(postId).asSet();
+						}
+					}).toSet();
+		} finally {
+			lock.readLock().unlock();
+		}
+	}
+
+}