package net.pterodactylus.sone.data;
+import com.google.common.base.Optional;
+import com.google.common.base.Predicate;
+
/**
* A reply is like a {@link Post} but can never be posted on its own, it always
* refers to another {@link Post}.
public interface PostReply extends Reply<PostReply> {
/**
- * Returns the post this reply refers to.
+ * Filter that selects {@link PostReply}s that have a
+ * {@link Optional#isPresent() present} {@link #getPost() post}.
+ */
+ public static final Predicate<PostReply> HAS_POST_FILTER = new Predicate<PostReply>() {
+
+ @Override
+ public boolean apply(PostReply postReply) {
+ return (postReply == null) ? false : postReply.getPost().isPresent();
+ }
+ };
+
+ /**
+ * Returns the ID of the post this reply refers to.
*
- * @return The post this reply refers to
+ * @return The ID of the post this reply refers to
*/
- public Post getPost();
+ public String getPostId();
/**
- * Sets the post this reply refers to.
+ * Returns the post this reply refers to.
*
- * @param postId
- * The ID of the post to reply to
- * @return This reply
+ * @return The post this reply refers to
*/
- public PostReply setPost(String postId);
+ public Optional<Post> getPost();
}